add iLert plugin

Signed-off-by: yacut <roman.rogozhnikov@gmail.com>
2021-04-14 17:29:23 +02:00
parent 93dc706eea
commit 2d3ee7572e
62 changed files with 5199 additions and 0 deletions
@@ -14,6 +14,7 @@
 /plugins/search-*                           @backstage/techdocs-core
 /plugins/techdocs                           @backstage/techdocs-core
 /plugins/techdocs-backend                   @backstage/techdocs-core
+/plugins/ilert                              @yacut
 /packages/techdocs-common                   @backstage/techdocs-core
 /.changeset/cost-insights-*                 @backstage/silver-lining
 /.changeset/techdocs-*                      @backstage/techdocs-core
@@ -0,0 +1,13 @@
+---
+title: iLert
+author: iLert
+authorUrl: https://github.com/iLert
+category: Monitoring
+description: iLert is a platform for alerting, on-call management and uptime monitoring.
+documentation: https://github.com/backstage/backstage/tree/master/plugins/ilert
+iconUrl: https://avatars.githubusercontent.com/u/13230510?s=200&v=4
+npmPackageName: '@backstage/plugin-ilert'
+tags:
+  - monitoring
+  - errors
+  - alerting
@@ -0,0 +1,6 @@
+module.exports = {
+  extends: [require.resolve('@backstage/cli/config/eslint')],
+  rules: {
+    quotes: ['error', 'single'],
+  },
+};
@@ -0,0 +1,132 @@
+# @backstage/plugin-ilert
+
+## Introduction
+
+[iLert](https://www.ilert.com) is a platform for alerting, on-call management and uptime monitoring. It helps teams to reduce response times to critical incidents by extending monitoring tools with reliable alerting, automatic escalations, on-call schedules and other features to support the incident response process, such as [informing stakeholders](https://docs.ilert.com/getting-started/stakeholder-engagement) or creating tickets in external incident management tools.
+
+## Overview
+
+This plugin displays iLert information about an entity such as if there are any active incidents, wo is on-call now and uptime monitor status.
+
+There is also an easy way to trigger an incident directly to the person who is currently on-call.
+
+This plugin provides:
+
+- Information details about the persons on-call
+- A way to override current person on-call
+- A list of incidents
+- A way to trigger a new incident
+- A way to reassign/acknowledge/resolve an incident
+- A list of uptime monitors
+
+## Setup instructions
+
+Install the plugin:
+
+```bash
+yarn add @backstage/plugin-ilert
+```
+
+Then make sure to export the plugin in your app's [`plugins.ts`](https://github.com/backstage/backstage/blob/master/packages/app/src/plugins.ts)
+to enable the plugin:
+
+```js
+export { plugin as ILert } from '@backstage/plugin-ilert';
+```
+
+Add it to the `EntityPage.tsx`:
+
+```ts
+import {
+  isPluginApplicableToEntity as isILertAvailable,
+  EntityILertCard,
+} from '@backstage/plugin-ilert';
+// add to code
+{
+  isILertAvailable(entity) && (
+    <Grid item md={6}>
+      <EntityILertCard />
+    </Grid>
+  );
+}
+```
+
+> To force iLert card for each entity just add the `<EntityILertCard />` component, so an instruction card will appears if no integration key is set.
+
+## Add iLert explorer to the App sidebar
+
+Modify your app routes in [`App.tsx`](https://github.com/backstage/backstage/blob/master/packages/app/src/App.tsx) to include the Router component exported from the plugin, for example:
+
+```tsx
+// At the top imports
+import { ILertPage } from '@backstage/plugin-ilert';
+
+// Inside App component
+<Routes>
+  // ...
+  <Route path="/ilert" element={<ILertPage />} />
+  // ...
+</Routes>;
+```
+
+Modify your sidebar in [`Root.tsx`](https://github.com/backstage/backstage/blob/master/packages/app/src/components/Root/Root.tsx) to include the icon component exported from the plugin, for example:
+
+```tsx
+// At the top imports
+import { ILertIcon } from '@backstage/plugin-ilert';
+
+// Inside Sidebar component
+<Sidebar>
+  // ...
+  <SidebarItem icon={ILertIcon} to="ilert" text="iLert" />
+  // ...
+</Sidebar>;
+```
+
+## Client configuration
+
+If you want to override the default URL for api calls and detail pages, you can add it to `app-config.yaml`.
+
+In `app-config.yaml`:
+
+```yaml
+ilert:
+  domain: https://my-org.ilert.com/
+```
+
+## Providing the Authorization Header
+
+In order to make the API calls, you need to provide a new proxy config which will redirect to the [iLert API](https://api.ilert.com/api-docs/) endpoint it needs an [Authorization Header](https://api.ilert.com/api-docs/#section/Authentication).
+
+Add the proxy configuration in `app-config.yaml`
+
+```yaml
+proxy:
+  ...
+  '/ilert':
+    target: https://api.ilert.com
+    allowedMethods: ['GET', 'POST', 'PUT']
+    allowedHeaders: ['Authorization']
+    headers:
+      Authorization:
+        $env: ILERT_AUTH_HEADER
+```
+
+Then start the backend passing the token as an environment variable:
+
+```bash
+$ ILERT_AUTH_HEADER='Basic <TOKEN>' yarn start
+```
+
+## Integration Key
+
+The information displayed for each entity is based on the [alert source integration key](https://docs.ilert.com/integrations/backstage).
+
+### Adding the integration key to the entity annotation
+
+If you want to use this plugin for an entity, you need to label it with the below annotation:
+
+```yml
+annotations:
+  ilert.com/integration-key: [INTEGRATION_KEY]
+```
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { createDevApp } from '@backstage/dev-utils';
+import { ilertPlugin } from '../src/plugin';
+import { IlertPage } from '../src';
+
+createDevApp()
+  .registerPlugin(ilertPlugin)
+  .addPage({
+    element: <IlertPage />,
+    title: 'Root Page',
+  })
+  .render();
@@ -0,0 +1,54 @@
+{
+  "name": "@backstage/plugin-ilert",
+  "version": "0.1.1",
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "license": "Apache-2.0",
+  "publishConfig": {
+    "access": "public",
+    "main": "dist/index.esm.js",
+    "types": "dist/index.d.ts"
+  },
+  "scripts": {
+    "build": "backstage-cli plugin:build",
+    "start": "backstage-cli plugin:serve",
+    "lint": "backstage-cli lint",
+    "test": "backstage-cli test",
+    "diff": "backstage-cli plugin:diff",
+    "prepack": "backstage-cli prepack",
+    "postpack": "backstage-cli postpack",
+    "clean": "backstage-cli clean"
+  },
+  "dependencies": {
+    "@backstage/catalog-model": "^0.7.6",
+    "@backstage/core": "^0.7.4",
+    "@backstage/plugin-catalog-react": "^0.1.4",
+    "@backstage/theme": "^0.2.5",
+    "@date-io/date-fns": "1.x",
+    "@material-ui/core": "^4.11.0",
+    "@material-ui/icons": "^4.9.1",
+    "@material-ui/lab": "4.0.0-alpha.45",
+    "@material-ui/pickers": "^3.3.10",
+    "date-fns": "^2.20.2",
+    "moment": "^2.29.1",
+    "moment-timezone": "^0.5.33",
+    "react": "^16.13.1",
+    "react-dom": "^16.13.1",
+    "react-use": "^15.3.3"
+  },
+  "devDependencies": {
+    "@backstage/cli": "^0.6.7",
+    "@backstage/dev-utils": "^0.1.13",
+    "@backstage/test-utils": "^0.1.10",
+    "@testing-library/jest-dom": "^5.10.1",
+    "@testing-library/react": "^11.2.5",
+    "@testing-library/user-event": "^12.0.7",
+    "@types/jest": "^26.0.7",
+    "@types/node": "^14.14.32",
+    "cross-fetch": "^3.0.6",
+    "msw": "^0.21.2"
+  },
+  "files": [
+    "dist"
+  ]
+}
@@ -0,0 +1,500 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ConfigApi, createApiRef, DiscoveryApi } from '@backstage/core';
+import {
+  AlertSource,
+  EscalationPolicy,
+  Incident,
+  IncidentResponder,
+  Schedule,
+  UptimeMonitor,
+  User,
+} from '../types';
+import {
+  ILertApi,
+  GetIncidentsOpts,
+  GetIncidentsCountOpts,
+  Options,
+  EventRequest,
+} from './types';
+import moment from 'moment';
+import momentTimezone from 'moment-timezone';
+
+export const ilertApiRef = createApiRef<ILertApi>({
+  id: 'plugin.ilert.service',
+  description: 'Used to make requests towards iLert API',
+});
+
+const DEFAULT_PROXY_PATH = '/ilert';
+export class UnauthorizedError extends Error {}
+
+export class ILertClient implements ILertApi {
+  private readonly discoveryApi: DiscoveryApi;
+  private readonly proxyPath: string;
+  private readonly domain: string;
+
+  static fromConfig(configApi: ConfigApi, discoveryApi: DiscoveryApi) {
+    const domainUrl: string =
+      configApi.getOptionalString('domainUrl') ?? 'https://api.ilert.com';
+
+    return new ILertClient({
+      discoveryApi: discoveryApi,
+      domain: domainUrl,
+      proxyPath: configApi.getOptionalString('ilert.proxyPath'),
+    });
+  }
+
+  constructor(opts: Options) {
+    this.discoveryApi = opts.discoveryApi;
+    this.domain = opts.domain;
+    this.proxyPath = opts.proxyPath ?? DEFAULT_PROXY_PATH;
+  }
+
+  private async fetch<T = any>(input: string, init?: RequestInit): Promise<T> {
+    const apiUrl = await this.apiUrl();
+
+    const response = await fetch(`${apiUrl}${input}`, init);
+    if (response.status === 401) {
+      throw new UnauthorizedError('');
+    }
+    if (!response.ok) {
+      throw new Error(
+        `Request failed with ${response.status} ${response.statusText}`,
+      );
+    }
+
+    return await response.json();
+  }
+
+  async fetchIncidents(opts?: GetIncidentsOpts): Promise<Incident[]> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+    const query = new URLSearchParams();
+    if (opts && opts.maxResults) {
+      query.append('max-results', `${opts.maxResults}`);
+    }
+    if (opts && opts.startIndex) {
+      query.append('start-index', `${opts.startIndex}`);
+    }
+    if (opts && opts.alertSources) {
+      opts.alertSources.forEach((a: string | number) => {
+        if (a) {
+          query.append('alert-source', `${a}`);
+        }
+      });
+    }
+
+    if (opts && opts.states && Array.isArray(opts.states)) {
+      opts.states.forEach(state => {
+        query.append('state', state);
+      });
+    }
+    const response = await this.fetch(
+      `/api/v1/incidents?${query.toString()}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async fetchIncidentsCount(opts?: GetIncidentsCountOpts): Promise<number> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+    const query = new URLSearchParams();
+    if (opts && opts.states && Array.isArray(opts.states)) {
+      opts.states.forEach(state => {
+        query.append('state', state);
+      });
+    }
+    const response = await this.fetch(
+      `/api/v1/incidents/count?${query.toString()}`,
+      init,
+    );
+
+    return response && response.count ? response.count : 0;
+  }
+
+  async fetchIncidentResponders(
+    incident: Incident,
+  ): Promise<IncidentResponder[]> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response = await this.fetch(
+      `/api/v1/incidents/${incident.id}/responders`,
+      init,
+    );
+
+    return response;
+  }
+
+  async acceptIncident(incident: Incident): Promise<Incident> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ summary: 'Backstage — iLert plugin' }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/incidents/${incident.id}/accept`,
+      init,
+    );
+
+    return response;
+  }
+
+  async resolveIncident(incident: Incident): Promise<Incident> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ summary: 'Backstage — iLert plugin' }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/incidents/${incident.id}/resolve`,
+      init,
+    );
+
+    return response;
+  }
+
+  async assignIncident(
+    incident: Incident,
+    responder: IncidentResponder,
+  ): Promise<Incident> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const query = new URLSearchParams();
+    switch (responder.group) {
+      case 'ESCALATION_POLICY':
+        query.append('policy-id', `${responder.id}`);
+        break;
+      case 'ON_CALL_SCHEDULE':
+        query.append('schedule-id', `${responder.id}`);
+        break;
+      default:
+        query.append('user-id', `${responder.id}`);
+        break;
+    }
+
+    const response = await this.fetch(
+      `/api/v1/incidents/${incident.id}/assign?${query.toString()}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async createIncident(eventRequest: EventRequest): Promise<boolean> {
+    const init = {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({
+        apiKey: eventRequest.integrationKey,
+        summary: eventRequest.summary,
+        details: eventRequest.details,
+        eventType: 'ALERT',
+        links: [
+          {
+            href: eventRequest.source,
+            text: 'Backstage Url',
+          },
+        ],
+        customDetails: {
+          userName: eventRequest.userName,
+        },
+      }),
+    };
+
+    const response = await this.fetch('/api/v1/events', init);
+    return response.responseCode === 'NEW_INCIDENT_CREATED';
+  }
+
+  async fetchUptimeMonitors(): Promise<UptimeMonitor[]> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response = await this.fetch('/api/v1/uptime-monitors', init);
+
+    return response;
+  }
+
+  async fetchUptimeMonitor(id: number): Promise<UptimeMonitor> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response: UptimeMonitor = await this.fetch(
+      `/api/v1/uptime-monitors/${id}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async pauseUptimeMonitor(
+    uptimeMonitor: UptimeMonitor,
+  ): Promise<UptimeMonitor> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ ...uptimeMonitor, paused: true }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/uptime-monitors/${uptimeMonitor.id}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async resumeUptimeMonitor(
+    uptimeMonitor: UptimeMonitor,
+  ): Promise<UptimeMonitor> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ ...uptimeMonitor, paused: false }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/uptime-monitors/${uptimeMonitor.id}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async fetchAlertSources(): Promise<AlertSource[]> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response = await this.fetch('/api/v1/alert-sources', init);
+
+    return response;
+  }
+
+  async fetchAlertSource(
+    idOrIntegrationKey: number | string,
+  ): Promise<AlertSource> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response = await this.fetch(
+      `/api/v1/alert-sources/${idOrIntegrationKey}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async enableAlertSource(alertSource: AlertSource): Promise<AlertSource> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ ...alertSource, active: true }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/alert-sources/${alertSource.id}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async disableAlertSource(alertSource: AlertSource): Promise<AlertSource> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ ...alertSource, active: false }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/alert-sources/${alertSource.id}`,
+      init,
+    );
+
+    return response;
+  }
+
+  async addImmediateMaintenance(
+    alertSourceId: number,
+    minutes: number,
+  ): Promise<void> {
+    const init = {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({
+        start: moment().utc().toISOString(),
+        end: moment().add(minutes, 'minutes').utc().toISOString(),
+        description: `Immediate maintenance window for ${minutes} minutes. Backstage — iLert plugin.`,
+        createdBy: 'Backstage',
+        timezone: momentTimezone.tz.guess(),
+        alertSources: [{ id: alertSourceId }],
+      }),
+    };
+
+    const response = await this.fetch('/api/v1/maintenance-windows', init);
+
+    return response;
+  }
+
+  async fetchOnCallSchedules(): Promise<Schedule[]> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response = await this.fetch('/api/v1/schedules', init);
+
+    return response;
+  }
+
+  async fetchUsers(): Promise<User[]> {
+    const init = {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+    };
+
+    const response = await this.fetch('/api/v1/users', init);
+
+    return response;
+  }
+
+  async overrideShift(
+    scheduleId: number,
+    userId: number,
+    start: string,
+    end: string,
+  ): Promise<Schedule> {
+    const init = {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify({ user: { id: userId }, start, end }),
+    };
+
+    const response = await this.fetch(
+      `/api/v1/schedules/${scheduleId}/overrides`,
+      init,
+    );
+
+    return response;
+  }
+
+  getIncidentDetailsURL(incident: Incident): string {
+    return `${this.domain}/incident/view.jsf?id=${incident.id}`;
+  }
+
+  getAlertSourceDetailsURL(alertSource: AlertSource | null): string {
+    if (!alertSource) {
+      return '';
+    }
+    return `${this.domain}/source/view.jsf?id=${alertSource.id}`;
+  }
+
+  getEscalationPolicyDetailsURL(escalationPolicy: EscalationPolicy): string {
+    return `${this.domain}/policy/view.jsf?id=${escalationPolicy.id}`;
+  }
+
+  getUptimeMonitorDetailsURL(uptimeMonitor: UptimeMonitor): string {
+    return `${this.domain}/uptime/view.jsf?id=${uptimeMonitor.id}`;
+  }
+
+  getScheduleDetailsURL(schedule: Schedule): string {
+    return `${this.domain}/schedule/view.jsf?id=${schedule.id}`;
+  }
+
+  getUserInitials(assignedTo: User | null) {
+    if (!assignedTo) {
+      return '';
+    }
+    if (!assignedTo.firstName && !assignedTo.lastName) {
+      return assignedTo.username;
+    }
+    return `${assignedTo.firstName} ${assignedTo.lastName} (${assignedTo.username})`;
+  }
+
+  private async apiUrl() {
+    const proxyUrl = await this.discoveryApi.getBaseUrl('proxy');
+    return proxyUrl + this.proxyPath;
+  }
+}
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export { ILertClient, ilertApiRef, UnauthorizedError } from './client';
+export type {
+  ILertApi,
+  GetIncidentsCountOpts,
+  GetIncidentsOpts,
+  TableState,
+} from './types';
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { DiscoveryApi } from '@backstage/core';
+import {
+  AlertSource,
+  Incident,
+  User,
+  IncidentStatus,
+  UptimeMonitor,
+  EscalationPolicy,
+  Schedule,
+  IncidentResponder,
+} from '../types';
+
+export type TableState = {
+  page: number;
+  pageSize: number;
+};
+
+export type GetIncidentsOpts = {
+  maxResults?: number;
+  startIndex?: number;
+  states?: IncidentStatus[];
+  alertSources?: number[] | string[];
+};
+
+export type GetIncidentsCountOpts = {
+  states?: IncidentStatus[];
+};
+
+export type EventRequest = {
+  integrationKey: string;
+  summary: string;
+  details: string;
+  userName: string;
+  source: string;
+};
+
+export interface ILertApi {
+  fetchIncidents(opts?: GetIncidentsOpts): Promise<Incident[]>;
+  fetchIncidentsCount(opts?: GetIncidentsCountOpts): Promise<number>;
+  fetchIncidentResponders(incident: Incident): Promise<IncidentResponder[]>;
+  acceptIncident(incident: Incident): Promise<Incident>;
+  resolveIncident(incident: Incident): Promise<Incident>;
+  assignIncident(
+    incident: Incident,
+    responder: IncidentResponder,
+  ): Promise<Incident>;
+  createIncident(eventRequest: EventRequest): Promise<boolean>;
+
+  fetchUptimeMonitors(): Promise<UptimeMonitor[]>;
+  pauseUptimeMonitor(uptimeMonitor: UptimeMonitor): Promise<UptimeMonitor>;
+  resumeUptimeMonitor(uptimeMonitor: UptimeMonitor): Promise<UptimeMonitor>;
+  fetchUptimeMonitor(id: number): Promise<UptimeMonitor>;
+
+  fetchAlertSources(): Promise<AlertSource[]>;
+  fetchAlertSource(idOrIntegrationKey: number | string): Promise<AlertSource>;
+  enableAlertSource(alertSource: AlertSource): Promise<AlertSource>;
+  disableAlertSource(alertSource: AlertSource): Promise<AlertSource>;
+
+  addImmediateMaintenance(
+    alertSourceId: number,
+    minutes: number,
+  ): Promise<void>;
+
+  fetchOnCallSchedules(): Promise<Schedule[]>;
+  fetchUsers(): Promise<User[]>;
+
+  overrideShift(
+    scheduleId: number,
+    userId: number,
+    start: string,
+    end: string,
+  ): Promise<Schedule>;
+
+  getIncidentDetailsURL(incident: Incident): string;
+  getAlertSourceDetailsURL(alertSource: AlertSource | null): string;
+  getEscalationPolicyDetailsURL(escalationPolicy: EscalationPolicy): string;
+  getUptimeMonitorDetailsURL(uptimeMonitor: UptimeMonitor): string;
+  getScheduleDetailsURL(schedule: Schedule): string;
+  getUserInitials(assignedTo: User | null): string;
+}
+
+export type Options = {
+  discoveryApi: DiscoveryApi;
+
+  /**
+   * Domain used by users to access iLert web UI.
+   * Example: https://my-org.ilert.com/
+   */
+  domain: string;
+
+  /**
+   * Path to use for requests via the proxy, defaults to /ilert/api
+   */
+  proxyPath?: string;
+};
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="24pt" height="24pt" viewBox="0 0 24 24" version="1.1">
+<g id="Logo">
+<path style=" stroke:none;fill-rule:nonzero;fill:rgb(100%,100%,100%);fill-opacity:1;" d="M 0 9.277344 L 0 18.574219 C 0 20.832031 1.847656 22.679688 4.105469 22.679688 L 12.582031 22.679688 C 6.21875 21.007812 1.277344 15.792969 0 9.277344 Z M 0 9.277344 "/>
+<path style=" stroke:none;fill-rule:nonzero;fill:rgb(100%,100%,100%);fill-opacity:1;" d="M 19.527344 22.5625 C 21.328125 22.128906 22.679688 20.503906 22.679688 18.574219 L 22.679688 16.273438 C 21.691406 16.820312 20.632812 17.222656 19.527344 17.46875 Z M 19.527344 22.5625 "/>
+<path style=" stroke:none;fill-rule:nonzero;fill:rgb(100%,100%,100%);fill-opacity:1;" d="M 14.417969 17.46875 C 9.136719 16.296875 5.171875 11.578125 5.171875 5.945312 C 5.167969 3.855469 5.726562 1.804688 6.785156 0 L 4.105469 0 C 1.847656 0 0 1.847656 0 4.105469 L 0 6.882812 C 0.433594 14.816406 6.335938 21.316406 13.992188 22.679688 L 14.421875 22.679688 Z M 14.417969 17.46875 "/>
+<path style=" stroke:none;fill-rule:nonzero;fill:rgb(100%,100%,100%);fill-opacity:1;" d="M 19.527344 12.375 L 19.527344 17.160156 C 20.632812 16.910156 21.695312 16.496094 22.679688 15.929688 L 22.679688 9.855469 C 21.902344 10.988281 20.804688 11.863281 19.527344 12.375 Z M 19.527344 12.375 "/>
+<path style=" stroke:none;fill-rule:nonzero;fill:rgb(100%,100%,100%);fill-opacity:1;" d="M 14.417969 17.160156 L 14.417969 12.375 C 11.863281 11.355469 10.054688 8.859375 10.054688 5.945312 C 10.054688 3.503906 11.34375 1.246094 13.441406 0 L 7.128906 0 C 6.039062 1.792969 5.464844 3.847656 5.46875 5.945312 C 5.46875 11.410156 9.300781 15.996094 14.417969 17.160156 Z M 14.417969 17.160156 "/>
+<path style=" stroke:none;fill-rule:nonzero;fill:rgb(100%,100%,100%);fill-opacity:1;" d="M 10.355469 5.945312 C 10.355469 8.613281 11.957031 11.019531 14.417969 12.050781 L 14.417969 9.917969 C 15.972656 10.925781 17.972656 10.925781 19.527344 9.917969 L 19.527344 12.050781 C 20.847656 11.496094 21.953125 10.53125 22.679688 9.300781 L 22.679688 4.105469 C 22.679688 1.847656 20.832031 0 18.574219 0 L 14.066406 0 C 11.796875 1.113281 10.355469 3.417969 10.355469 5.945312 Z M 16.972656 2.5625 C 18.84375 2.5625 20.355469 4.078125 20.355469 5.945312 C 20.355469 7.8125 18.84375 9.328125 16.972656 9.328125 C 15.105469 9.328125 13.589844 7.8125 13.589844 5.945312 C 13.59375 4.078125 15.105469 2.566406 16.972656 2.5625 Z M 16.972656 2.5625 "/>
+</g>
+</svg>
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { useApi } from '@backstage/core';
+import Link from '@material-ui/core/Link';
+import Grid from '@material-ui/core/Grid';
+import { AlertSource } from '../../types';
+import { ilertApiRef } from '../../api';
+import { makeStyles } from '@material-ui/core/styles';
+import useMediaQuery from '@material-ui/core/useMediaQuery';
+
+const useStyles = makeStyles({
+  root: {
+    display: 'flex',
+    maxWidth: '100%',
+  },
+  image: {
+    height: 22,
+    paddingRight: 4,
+  },
+  link: {
+    lineHeight: '22px',
+  },
+});
+
+export const AlertSourceLink = ({
+  alertSource,
+}: {
+  alertSource: AlertSource | null;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const classes = useStyles();
+  const prefersDarkMode = useMediaQuery('(prefers-color-scheme: dark)');
+
+  if (!alertSource) {
+    return null;
+  }
+
+  return (
+    <Grid container spacing={0}>
+      <Grid item xs={2}>
+        <img
+          src={prefersDarkMode ? alertSource.lightIconUrl : alertSource.iconUrl}
+          alt={alertSource.name}
+          className={classes.image}
+        />
+      </Grid>
+      <Grid item xs={10}>
+        <Link
+          className={classes.link}
+          href={ilertApi.getAlertSourceDetailsURL(alertSource)}
+        >
+          {alertSource.name}
+        </Link>
+      </Grid>
+    </Grid>
+  );
+};
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { EmptyState } from '@backstage/core';
+import { Button } from '@material-ui/core';
+
+export const MissingAuthorizationHeaderError = () => (
+  <EmptyState
+    missing="info"
+    title="Missing or invalid iLert authorization header"
+    description="The request to fetch data needs a valid authorization header. See README for more details."
+    action={
+      <Button
+        color="primary"
+        variant="contained"
+        href="https://github.com/backstage/backstage/blob/master/plugins/ilert/README.md"
+      >
+        Read More
+      </Button>
+    }
+  />
+);
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export { MissingAuthorizationHeaderError } from './MissingAuthorizationHeaderError';
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { useApi } from '@backstage/core';
+import Link from '@material-ui/core/Link';
+import { makeStyles } from '@material-ui/core/styles';
+import { EscalationPolicy } from '../../types';
+import { ilertApiRef } from '../../api';
+
+const useStyles = makeStyles({
+  link: {
+    lineHeight: '22px',
+  },
+});
+
+export const EscalationPolicyLink = ({
+  escalationPolicy,
+}: {
+  escalationPolicy: EscalationPolicy | null;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const classes = useStyles();
+
+  if (!escalationPolicy) {
+    return null;
+  }
+
+  return (
+    <Link
+      className={classes.link}
+      href={ilertApi.getEscalationPolicyDetailsURL(escalationPolicy)}
+    >
+      {escalationPolicy.name}
+    </Link>
+  );
+};
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { Entity } from '@backstage/catalog-model';
+import { UnauthorizedError } from '../../api';
+import Alert from '@material-ui/lab/Alert';
+import Card from '@material-ui/core/Card';
+import CardContent from '@material-ui/core/CardContent';
+import CardHeader from '@material-ui/core/CardHeader';
+import Divider from '@material-ui/core/Divider';
+import { makeStyles } from '@material-ui/core/styles';
+import { ILERT_INTEGRATION_KEY } from '../../constants';
+import { MissingAuthorizationHeaderError } from '../Errors';
+import { useIncidents } from '../../hooks/useIncidents';
+import { IncidentsTable } from '../IncidentsPage';
+import { IncidentNewModal } from '../Incident/IncidentNewModal';
+import { ILertCardActionsHeader } from './ILertCardActionsHeader';
+import { useAlertSource } from '../../hooks/useAlertSource';
+import { useILertEntity } from '../../hooks';
+import { ILertCardHeaderStatus } from './ILertCardHeaderStatus';
+import { ILertCardMaintenanceModal } from './ILertCardMaintenanceModal';
+import { ILertCardEmptyState } from './ILertCardEmptyState';
+
+export const isPluginApplicableToEntity = (entity: Entity) =>
+  Boolean(entity.metadata.annotations?.[ILERT_INTEGRATION_KEY]);
+
+const useStyles = makeStyles({
+  content: {
+    paddingLeft: '0 !important',
+    paddingRight: '0 !important',
+    paddingBottom: '0 !important',
+    paddingTop: '0 !important',
+    '& div div': {
+      boxShadow: 'none !important',
+    },
+  },
+});
+
+export const ILertCard = () => {
+  const classes = useStyles();
+  const { integrationKey, name } = useILertEntity();
+  const [
+    { alertSource, uptimeMonitor },
+    { setAlertSource, refetchAlertSource },
+  ] = useAlertSource(integrationKey);
+  const alertSourcesFilter = alertSource ? [alertSource.id] : [integrationKey];
+  const [
+    { tableState, states, incidents, incidentsCount, isLoading, error },
+    {
+      onIncidentStatesChange,
+      onChangePage,
+      onChangeRowsPerPage,
+      onIncidentChanged,
+      refetchIncidents,
+      setIsLoading,
+    },
+  ] = useIncidents(false, alertSourcesFilter);
+
+  const [
+    isNewIncidentModalOpened,
+    setIsNewIncidentModalOpened,
+  ] = React.useState(false);
+  const [
+    isMaintenanceModalOpened,
+    setIsMaintenanceModalOpened,
+  ] = React.useState(false);
+
+  if (error) {
+    if (error instanceof UnauthorizedError) {
+      return <MissingAuthorizationHeaderError />;
+    }
+
+    return (
+      <Alert data-testid="error-message" severity="error">
+        {error.message}
+      </Alert>
+    );
+  }
+
+  if (!integrationKey) {
+    return <ILertCardEmptyState />;
+  }
+
+  return (
+    <>
+      <Card data-testid="ilert-card">
+        <CardHeader
+          title="iLert"
+          subheader={
+            <ILertCardActionsHeader
+              alertSource={alertSource}
+              setAlertSource={setAlertSource}
+              setIsNewIncidentModalOpened={setIsNewIncidentModalOpened}
+              setIsMaintenanceModalOpened={setIsMaintenanceModalOpened}
+              uptimeMonitor={uptimeMonitor}
+            />
+          }
+          action={<ILertCardHeaderStatus alertSource={alertSource} />}
+        />
+        <Divider />
+        <CardContent className={classes.content}>
+          <IncidentsTable
+            incidents={incidents}
+            incidentsCount={incidentsCount}
+            tableState={tableState}
+            states={states}
+            onIncidentChanged={onIncidentChanged}
+            onIncidentStatesChange={onIncidentStatesChange}
+            onChangePage={onChangePage}
+            onChangeRowsPerPage={onChangeRowsPerPage}
+            isLoading={isLoading}
+            setIsLoading={setIsLoading}
+            compact
+          />
+        </CardContent>
+      </Card>
+      <IncidentNewModal
+        isModalOpened={isNewIncidentModalOpened}
+        setIsModalOpened={setIsNewIncidentModalOpened}
+        refetchIncidents={refetchIncidents}
+        initialAlertSource={alertSource}
+        entityName={name}
+      />
+      <ILertCardMaintenanceModal
+        alertSource={alertSource}
+        refetchAlertSource={refetchAlertSource}
+        isModalOpened={isMaintenanceModalOpened}
+        setIsModalOpened={setIsMaintenanceModalOpened}
+      />
+    </>
+  );
+};
@@ -0,0 +1,203 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import {
+  HeaderIconLinkRow,
+  IconLinkVerticalProps,
+  useApi,
+  alertApiRef,
+} from '@backstage/core';
+import Alert from '@material-ui/lab/Alert';
+import Button from '@material-ui/core/Button';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import AlarmAddIcon from '@material-ui/icons/AlarmAdd';
+import BuildIcon from '@material-ui/icons/Build';
+import PauseIcon from '@material-ui/icons/Pause';
+import PlayArrowIcon from '@material-ui/icons/PlayArrow';
+import TimelineIcon from '@material-ui/icons/Timeline';
+import WebIcon from '@material-ui/icons/Web';
+import Typography from '@material-ui/core/Typography';
+import { ilertApiRef } from '../../api';
+import { AlertSource, UptimeMonitor } from '../../types';
+
+export const ILertCardActionsHeader = ({
+  alertSource,
+  setAlertSource,
+  setIsNewIncidentModalOpened,
+  setIsMaintenanceModalOpened,
+  uptimeMonitor,
+}: {
+  alertSource: AlertSource | null;
+  setAlertSource: (alertSource: AlertSource) => void;
+  setIsNewIncidentModalOpened: (isOpen: boolean) => void;
+  setIsMaintenanceModalOpened: (isOpen: boolean) => void;
+  uptimeMonitor: UptimeMonitor | null;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const [isLoading, setIsLoading] = React.useState(false);
+  const [isDisableModalOpened, setIsDisableModalOpened] = React.useState(false);
+
+  const handleCreateNewIncident = () => {
+    setIsNewIncidentModalOpened(true);
+  };
+
+  const handleEnableAlertSource = async () => {
+    try {
+      if (!alertSource) {
+        return;
+      }
+      setIsLoading(true);
+      const newAlertSource = await ilertApi.enableAlertSource(alertSource);
+      alertApi.post({ message: 'Alert source enabled.' });
+      setIsLoading(false);
+      setAlertSource(newAlertSource);
+    } catch (err) {
+      setIsLoading(false);
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+  const handleDisableAlertSource = async () => {
+    try {
+      if (!alertSource) {
+        return;
+      }
+      setIsDisableModalOpened(false);
+      setIsLoading(true);
+      const newAlertSource = await ilertApi.disableAlertSource(alertSource);
+      alertApi.post({ message: 'Alert source disabled.' });
+      setIsLoading(false);
+      setAlertSource(newAlertSource);
+    } catch (err) {
+      setIsLoading(false);
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+
+  const handleDisableAlertSourceWarningOpen = () => {
+    setIsDisableModalOpened(true);
+  };
+
+  const handleDisableAlertSourceWarningClose = () => {
+    setIsDisableModalOpened(false);
+  };
+
+  const handleMaintenanceAlertSource = () => {
+    setIsMaintenanceModalOpened(true);
+  };
+
+  const alertSourceLink: IconLinkVerticalProps = {
+    label: 'Alert Source',
+    href: ilertApi.getAlertSourceDetailsURL(alertSource),
+    icon: <WebIcon />,
+  };
+
+  const createIncidentLink: IconLinkVerticalProps = {
+    label: 'Create Incident',
+    onClick: handleCreateNewIncident,
+    icon: <AlarmAddIcon />,
+    color: 'secondary',
+    disabled:
+      !alertSource ||
+      alertSource.status === 'DISABLED' ||
+      alertSource.status === 'IN_MAINTENANCE',
+  };
+
+  const enableAlertSourceLink: IconLinkVerticalProps = {
+    label: 'Enable',
+    onClick: handleEnableAlertSource,
+    icon: <PlayArrowIcon />,
+    disabled: !alertSource || isLoading,
+  };
+
+  const disableAlertSourceLink: IconLinkVerticalProps = {
+    label: 'Disable',
+    onClick: handleDisableAlertSourceWarningOpen,
+    icon: <PauseIcon />,
+    disabled: !alertSource || isLoading,
+  };
+
+  const maintenanceAlertSourceLink: IconLinkVerticalProps = {
+    label: 'Immediate maintenance',
+    onClick: handleMaintenanceAlertSource,
+    icon: <BuildIcon />,
+    disabled: !alertSource || isLoading,
+  };
+
+  const uptimeMonitorReportLink: IconLinkVerticalProps = {
+    label: 'Uptime Report',
+    href: uptimeMonitor ? uptimeMonitor.shareUrl : '',
+    icon: <TimelineIcon />,
+    disabled: !alertSource || !uptimeMonitor || isLoading,
+  };
+
+  const links: IconLinkVerticalProps[] = [
+    alertSourceLink,
+    createIncidentLink,
+    alertSource && alertSource.active
+      ? disableAlertSourceLink
+      : enableAlertSourceLink,
+  ];
+
+  if (alertSource && alertSource.integrationType === 'MONITOR') {
+    links.push(uptimeMonitorReportLink);
+  }
+
+  if (alertSource && alertSource.status !== 'IN_MAINTENANCE') {
+    links.push(maintenanceAlertSourceLink);
+  }
+
+  return (
+    <>
+      <HeaderIconLinkRow links={links} />
+      <Dialog
+        open={isDisableModalOpened}
+        onClose={handleDisableAlertSourceWarningClose}
+        aria-labelledby="alert-source-disable-form-title"
+      >
+        <DialogTitle id="alert-source-disable-form-title">
+          Disable alert source
+        </DialogTitle>
+        <DialogContent>
+          <Alert severity="info">
+            <Typography variant="body1" align="justify">
+              Do you really want to disable this alert source? A disabled alert
+              source cannot create new incidents.
+            </Typography>
+          </Alert>
+        </DialogContent>
+        <DialogActions>
+          <Button
+            onClick={handleDisableAlertSource}
+            color="secondary"
+            variant="contained"
+          >
+            Disable
+          </Button>
+          <Button
+            onClick={handleDisableAlertSourceWarningClose}
+            color="primary"
+          >
+            Cancel
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </>
+  );
+};
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { CodeSnippet } from '@backstage/core';
+import { BackstageTheme } from '@backstage/theme';
+import Card from '@material-ui/core/Card';
+import CardContent from '@material-ui/core/CardContent';
+import CardHeader from '@material-ui/core/CardHeader';
+import Button from '@material-ui/core/Button';
+import Divider from '@material-ui/core/Divider';
+import Typography from '@material-ui/core/Typography';
+import { makeStyles } from '@material-ui/core/styles';
+import React from 'react';
+
+const ENTITY_YAML = `apiVersion: backstage.io/v1alpha1
+kind: Component
+metadata:
+  name: example
+  description: example.com
+  annotations:
+    ilert.com/integration-key: [INTEGRATION_KEY]
+spec:
+  type: website
+  lifecycle: production
+  owner: guest`;
+
+const useStyles = makeStyles<BackstageTheme>(theme => ({
+  code: {
+    borderRadius: 6,
+    margin: `${theme.spacing(2)}px 0px`,
+    background: theme.palette.type === 'dark' ? '#444' : '#fff',
+  },
+  header: {
+    display: 'inline-block',
+    padding: `${theme.spacing(2)}px ${theme.spacing(2)}px ${theme.spacing(
+      2,
+    )}px ${theme.spacing(2.5)}px`,
+  },
+}));
+
+export const ILertCardEmptyState = () => {
+  const classes = useStyles();
+
+  return (
+    <Card data-testid="ilert-empty-card">
+      <CardHeader title="iLert" className={classes.header} />
+      <Divider />
+      <CardContent>
+        <Typography variant="body1">
+          No integration key defined for this entity. You can add integration
+          key to your entity YAML as shown in the highlighted example below:
+        </Typography>
+        <div className={classes.code}>
+          <CodeSnippet
+            text={ENTITY_YAML}
+            language="yaml"
+            showLineNumbers
+            highlightedNumbers={[6, 7]}
+            customStyle={{ background: 'inherit', fontSize: '115%' }}
+          />
+        </div>
+        <Button
+          variant="contained"
+          color="primary"
+          target="_blank"
+          href="https://github.com/backstage/backstage/blob/master/plugins/ilert/README.md"
+        >
+          Read more
+        </Button>
+      </CardContent>
+    </Card>
+  );
+};
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import Chip from '@material-ui/core/Chip';
+import { withStyles } from '@material-ui/core/styles';
+import { AlertSource } from '../../types';
+
+const MaintenanceChip = withStyles({
+  root: {
+    backgroundColor: '#92949c',
+    color: 'white',
+    marginTop: 8,
+  },
+})(Chip);
+
+export const ILertCardHeaderStatus = ({
+  alertSource,
+}: {
+  alertSource: AlertSource | null;
+}) => {
+  if (!alertSource) {
+    return null;
+  }
+
+  switch (alertSource.status) {
+    case 'IN_MAINTENANCE':
+      return <MaintenanceChip label="MAINTENANCE" size="small" />;
+    case 'DISABLED':
+      return <MaintenanceChip label="INACTIVE" size="small" />;
+    default:
+      return null;
+  }
+};
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { alertApiRef, useApi } from '@backstage/core';
+import Button from '@material-ui/core/Button';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogContentText from '@material-ui/core/DialogContentText';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import MenuItem from '@material-ui/core/MenuItem';
+import TextField from '@material-ui/core/TextField';
+import { ilertApiRef } from '../../api';
+import { AlertSource } from '../../types';
+
+export const ILertCardMaintenanceModal = ({
+  alertSource,
+  refetchAlertSource,
+  isModalOpened,
+  setIsModalOpened,
+}: {
+  alertSource: AlertSource | null;
+  refetchAlertSource: () => void;
+  isModalOpened: boolean;
+  setIsModalOpened: (isModalOpened: boolean) => void;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const [minutes, setMinutes] = React.useState(5);
+
+  const handleClose = () => {
+    setIsModalOpened(false);
+  };
+
+  const handleImmediateMaintenance = () => {
+    if (!alertSource) {
+      return;
+    }
+    setIsModalOpened(false);
+    setTimeout(async () => {
+      try {
+        await ilertApi.addImmediateMaintenance(alertSource.id, minutes);
+        alertApi.post({ message: 'Maintenance started.' });
+        refetchAlertSource();
+      } catch (err) {
+        alertApi.post({ message: err, severity: 'error' });
+      }
+    }, 250);
+  };
+
+  const handleMinutesChange = (event: any) => {
+    setMinutes(event.target.value);
+  };
+
+  const minuteOptions = [
+    {
+      value: 5,
+      label: '5 minutes',
+    },
+    {
+      value: 10,
+      label: '10 minutes',
+    },
+    {
+      value: 15,
+      label: '15 minutes',
+    },
+    {
+      value: 30,
+      label: '30 minutes',
+    },
+    {
+      value: 60,
+      label: '60 minutes',
+    },
+  ];
+
+  if (!alertSource) {
+    return null;
+  }
+
+  return (
+    <Dialog
+      open={isModalOpened}
+      onClose={handleClose}
+      aria-labelledby="maintenance-form-title"
+    >
+      <DialogTitle id="maintenance-form-title">
+        New maintenance window
+      </DialogTitle>
+      <DialogContent>
+        <DialogContentText>
+          Keep your alert sources quiet, when your systems are under
+          maintenance.
+        </DialogContentText>
+        <TextField
+          select
+          label="Duration"
+          value={minutes}
+          onChange={handleMinutesChange}
+          variant="outlined"
+          fullWidth
+        >
+          {minuteOptions.map(option => (
+            <MenuItem key={option.value} value={option.value}>
+              {option.label}
+            </MenuItem>
+          ))}
+        </TextField>
+      </DialogContent>
+      <DialogActions>
+        <Button
+          onClick={handleImmediateMaintenance}
+          color="primary"
+          variant="contained"
+        >
+          Create
+        </Button>
+        <Button onClick={handleClose} color="primary">
+          Cancel
+        </Button>
+      </DialogActions>
+    </Dialog>
+  );
+};
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './ILertCard';
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import {
+  Page,
+  Header,
+  HeaderTabs,
+  HeaderLabel,
+  Content,
+} from '@backstage/core';
+import { IncidentsPage } from '../IncidentsPage';
+import { UptimeMonitorsPage } from '../UptimeMonitorsPage';
+import { OnCallSchedulesPage } from '../OnCallSchedulesPage';
+
+export const ILertPage = () => {
+  const [selectedTab, setSelectedTab] = React.useState<number>(0);
+  const tabs = [
+    { label: 'Who is on call?' },
+    { label: 'Incidents' },
+    { label: 'Uptime Monitors' },
+  ];
+  const renderTab = () => {
+    switch (selectedTab) {
+      case 0:
+        return <OnCallSchedulesPage />;
+      case 1:
+        return <IncidentsPage />;
+      case 2:
+        return <UptimeMonitorsPage />;
+      default:
+        return null;
+    }
+  };
+
+  return (
+    <Page themeId="website">
+      <Header title="iLert" type="tool">
+        <HeaderLabel label="Owner" value="iLert" />
+        <HeaderLabel label="Lifecycle" value="Alpha" />
+      </Header>
+      <HeaderTabs
+        selectedIndex={selectedTab}
+        onChange={index => setSelectedTab(index)}
+        tabs={tabs.map(({ label }, index) => ({
+          id: index.toString(),
+          label,
+        }))}
+      />
+
+      <Content noPadding>{renderTab()}</Content>
+    </Page>
+  );
+};
+
+export default ILertPage;
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './ILertPage';
@@ -0,0 +1,148 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { alertApiRef, useApi } from '@backstage/core';
+import { IconButton, Menu, MenuItem, Typography } from '@material-ui/core';
+import Link from '@material-ui/core/Link';
+import MoreVertIcon from '@material-ui/icons/MoreVert';
+import { ilertApiRef } from '../../api';
+import { Incident } from '../../types';
+import { IncidentAssignModal } from './IncidentAssignModal';
+
+export const IncidentActionsMenu = ({
+  incident,
+  onIncidentChanged,
+  setIsLoading,
+}: {
+  incident: Incident;
+  onIncidentChanged?: (incident: Incident) => void;
+  setIsLoading?: (isLoading: boolean) => void;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const [anchorEl, setAnchorEl] = React.useState<null | HTMLElement>(null);
+  const callback = onIncidentChanged || ((_: Incident): void => {});
+  const setProcessing = setIsLoading || ((_: boolean): void => {});
+  const [
+    isAssignIncidentModalOpened,
+    setIsAssignIncidentModalOpened,
+  ] = React.useState(false);
+
+  const handleClick = (event: React.MouseEvent<HTMLElement>) => {
+    setAnchorEl(event.currentTarget);
+  };
+
+  const handleCloseMenu = () => {
+    setAnchorEl(null);
+  };
+
+  const handleAccept = async (): Promise<void> => {
+    try {
+      handleCloseMenu();
+      setProcessing(true);
+      const newIncident = await ilertApi.acceptIncident(incident);
+      alertApi.post({ message: 'Incident accepted.' });
+
+      callback(newIncident);
+      setProcessing(false);
+    } catch (err) {
+      setProcessing(false);
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+
+  const handleResolve = async (): Promise<void> => {
+    try {
+      handleCloseMenu();
+      setProcessing(true);
+      const newIncident = await ilertApi.resolveIncident(incident);
+      alertApi.post({ message: 'Incident resolved.' });
+
+      callback(newIncident);
+      setProcessing(false);
+    } catch (err) {
+      setProcessing(false);
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+
+  const handleAssign = () => {
+    handleCloseMenu();
+    setIsAssignIncidentModalOpened(true);
+  };
+
+  return (
+    <>
+      <IconButton
+        aria-label="more"
+        aria-controls="long-menu"
+        aria-haspopup="true"
+        onClick={handleClick}
+        size="small"
+      >
+        <MoreVertIcon />
+      </IconButton>
+      <Menu
+        id={`incident-actions-menu-${incident.id}`}
+        anchorEl={anchorEl}
+        keepMounted
+        open={Boolean(anchorEl)}
+        onClose={handleCloseMenu}
+        PaperProps={{
+          style: { maxHeight: 48 * 4.5 },
+        }}
+      >
+        {incident.status === 'PENDING' ? (
+          <MenuItem key="ack" onClick={handleAccept}>
+            <Typography variant="inherit" noWrap>
+              Accept
+            </Typography>
+          </MenuItem>
+        ) : null}
+
+        {incident.status !== 'RESOLVED' ? (
+          <MenuItem key="close" onClick={handleResolve}>
+            <Typography variant="inherit" noWrap>
+              Resolve
+            </Typography>
+          </MenuItem>
+        ) : null}
+
+        {incident.status !== 'RESOLVED' ? (
+          <MenuItem key="assign" onClick={handleAssign}>
+            <Typography variant="inherit" noWrap>
+              Assign
+            </Typography>
+          </MenuItem>
+        ) : null}
+
+        <MenuItem key="details" onClick={handleCloseMenu}>
+          <Typography variant="inherit" noWrap>
+            <Link href={ilertApi.getIncidentDetailsURL(incident)}>
+              View in iLert
+            </Link>
+          </Typography>
+        </MenuItem>
+      </Menu>
+      <IncidentAssignModal
+        incident={incident}
+        setIsModalOpened={setIsAssignIncidentModalOpened}
+        isModalOpened={isAssignIncidentModalOpened}
+        onIncidentChanged={onIncidentChanged}
+      />
+    </>
+  );
+};
@@ -0,0 +1,183 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { alertApiRef, useApi } from '@backstage/core';
+import { makeStyles } from '@material-ui/core/styles';
+import Alert from '@material-ui/lab/Alert';
+import Button from '@material-ui/core/Button';
+import TextField from '@material-ui/core/TextField';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import Autocomplete from '@material-ui/lab/Autocomplete';
+import { useAssignIncident } from '../../hooks/useAssignIncident';
+import { Typography } from '@material-ui/core';
+import { ilertApiRef } from '../../api';
+import { Incident } from '../../types';
+
+const useStyles = makeStyles(() => ({
+  container: {
+    display: 'flex',
+    flexWrap: 'wrap',
+  },
+  formControl: {
+    minWidth: 120,
+    width: '100%',
+  },
+  option: {
+    fontSize: 15,
+    '& > span': {
+      marginRight: 10,
+      fontSize: 18,
+    },
+  },
+  optionWrapper: {
+    display: 'flex',
+    width: '100%',
+  },
+  sourceImage: {
+    height: 22,
+    paddingRight: 4,
+  },
+}));
+
+export const IncidentAssignModal = ({
+  incident,
+  isModalOpened,
+  setIsModalOpened,
+  onIncidentChanged,
+}: {
+  incident: Incident | null;
+  isModalOpened: boolean;
+  setIsModalOpened: (open: boolean) => void;
+  onIncidentChanged?: (incident: Incident) => void;
+}) => {
+  const [
+    { incidentRespondersList, incidentResponder, isLoading },
+    { setIsLoading, setIncidentResponder, setIncidentRespondersList },
+  ] = useAssignIncident(incident, isModalOpened);
+  const callback = onIncidentChanged || ((_: Incident): void => {});
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const classes = useStyles();
+
+  const handleClose = () => {
+    setIncidentRespondersList([]);
+    setIsModalOpened(false);
+  };
+
+  const handleAssign = () => {
+    if (!incident || !incidentResponder) {
+      return;
+    }
+    setIsLoading(true);
+    setIncidentRespondersList([]);
+    setTimeout(async () => {
+      try {
+        const newIncident = await ilertApi.assignIncident(
+          incident,
+          incidentResponder,
+        );
+        callback(newIncident);
+        alertApi.post({ message: 'Incident assigned.' });
+      } catch (err) {
+        alertApi.post({ message: err, severity: 'error' });
+      }
+      setIsLoading(false);
+      setIsModalOpened(false);
+    }, 250);
+  };
+
+  const canAssign = !!incidentResponder;
+
+  return (
+    <Dialog
+      open={isModalOpened}
+      onClose={handleClose}
+      aria-labelledby="assign-incident-form-title"
+    >
+      <DialogTitle id="assign-incident-form-title">
+        Select responder to assign
+      </DialogTitle>
+      <DialogContent>
+        <Alert severity="info">
+          <Typography variant="body1" gutterBottom align="justify">
+            This action will assign the incident to the selected responder.
+          </Typography>
+        </Alert>
+        <Autocomplete
+          disabled={isLoading}
+          options={incidentRespondersList}
+          value={incidentResponder}
+          classes={{
+            root: classes.formControl,
+            option: classes.option,
+          }}
+          onChange={(_event: any, newValue: any) => {
+            setIncidentResponder(newValue);
+          }}
+          autoHighlight
+          groupBy={option => {
+            switch (option.group) {
+              case 'SUGGESTED':
+                return 'Suggested responders';
+              case 'USER':
+                return 'Users';
+              case 'ESCALATION_POLICY':
+                return 'Escalation policies';
+              case 'ON_CALL_SCHEDULE':
+                return 'Schedules';
+              default:
+                return '';
+            }
+          }}
+          getOptionLabel={a => a.name}
+          renderOption={a => (
+            <div className={classes.optionWrapper}>
+              <Typography noWrap>{a.name}</Typography>
+            </div>
+          )}
+          renderInput={params => (
+            <TextField
+              {...params}
+              label="Responder"
+              variant="outlined"
+              margin="normal"
+              inputProps={{
+                ...params.inputProps,
+                autoComplete: 'new-password', // disable autocomplete and autofill
+              }}
+            />
+          )}
+        />
+      </DialogContent>
+      <DialogActions>
+        <Button
+          disabled={!canAssign}
+          onClick={handleAssign}
+          color="primary"
+          variant="contained"
+        >
+          Assign
+        </Button>
+        <Button onClick={handleClose} color="primary">
+          Cancel
+        </Button>
+      </DialogActions>
+    </Dialog>
+  );
+};
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { useApi } from '@backstage/core';
+import Link from '@material-ui/core/Link';
+import { makeStyles } from '@material-ui/core/styles';
+import { Incident } from '../../types';
+import { ilertApiRef } from '../../api';
+
+const useStyles = makeStyles({
+  link: {
+    lineHeight: '22px',
+  },
+});
+
+export const IncidentLink = ({ incident }: { incident: Incident | null }) => {
+  const ilertApi = useApi(ilertApiRef);
+  const classes = useStyles();
+
+  if (!incident) {
+    return null;
+  }
+
+  return (
+    <Link
+      className={classes.link}
+      href={ilertApi.getIncidentDetailsURL(incident)}
+    >
+      #{incident.id}
+    </Link>
+  );
+};
@@ -0,0 +1,230 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { alertApiRef, identityApiRef, useApi } from '@backstage/core';
+import { makeStyles } from '@material-ui/core/styles';
+import Alert from '@material-ui/lab/Alert';
+import Button from '@material-ui/core/Button';
+import TextField from '@material-ui/core/TextField';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import Autocomplete from '@material-ui/lab/Autocomplete';
+import { useNewIncident } from '../../hooks/useNewIncident';
+import { Typography } from '@material-ui/core';
+import useMediaQuery from '@material-ui/core/useMediaQuery';
+import { ilertApiRef } from '../../api';
+import { AlertSource } from '../../types';
+
+const useStyles = makeStyles(() => ({
+  container: {
+    display: 'flex',
+    flexWrap: 'wrap',
+  },
+  formControl: {
+    minWidth: 120,
+    width: '100%',
+  },
+  option: {
+    fontSize: 15,
+    '& > span': {
+      marginRight: 10,
+      fontSize: 18,
+    },
+  },
+  optionWrapper: {
+    display: 'flex',
+    width: '100%',
+  },
+  sourceImage: {
+    height: 22,
+    paddingRight: 4,
+  },
+}));
+
+export const IncidentNewModal = ({
+  isModalOpened,
+  setIsModalOpened,
+  refetchIncidents,
+  initialAlertSource,
+  entityName,
+}: {
+  isModalOpened: boolean;
+  setIsModalOpened: (open: boolean) => void;
+  refetchIncidents: () => void;
+  initialAlertSource?: AlertSource | null;
+  entityName?: string;
+}) => {
+  const [
+    { alertSources, alertSource, summary, details, isLoading },
+    { setAlertSource, setSummary, setDetails, setIsLoading },
+  ] = useNewIncident(isModalOpened, initialAlertSource);
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const identityApi = useApi(identityApiRef);
+  const userName = identityApi.getUserId();
+  const source = window.location.toString();
+  const classes = useStyles();
+  const prefersDarkMode = useMediaQuery('(prefers-color-scheme: dark)');
+
+  const handleClose = () => {
+    setIsModalOpened(false);
+  };
+
+  let integrationKey = '';
+  if (initialAlertSource && initialAlertSource.integrationKey) {
+    integrationKey = initialAlertSource.integrationKey;
+  } else if (alertSource && alertSource.integrationKey) {
+    integrationKey = alertSource.integrationKey;
+  }
+  const handleCreate = () => {
+    if (!integrationKey) {
+      return;
+    }
+    setIsLoading(true);
+    setTimeout(async () => {
+      try {
+        const success = await ilertApi.createIncident({
+          integrationKey,
+          summary,
+          details,
+          userName,
+          source,
+        });
+        if (success) {
+          alertApi.post({ message: 'Incident created.' });
+          refetchIncidents();
+        }
+      } catch (err) {
+        alertApi.post({ message: err, severity: 'error' });
+      }
+      setIsModalOpened(false);
+    }, 250);
+  };
+
+  const canCreate = !!integrationKey && !!summary;
+
+  return (
+    <Dialog
+      open={isModalOpened}
+      onClose={handleClose}
+      aria-labelledby="create-incident-form-title"
+    >
+      <DialogTitle id="create-incident-form-title">
+        {entityName ? (
+          <div>
+            This action will trigger an incident for{' '}
+            <strong>"{entityName}"</strong>.
+          </div>
+        ) : (
+          'New incident'
+        )}
+      </DialogTitle>
+      <DialogContent>
+        <Alert severity="info">
+          <Typography variant="body1" gutterBottom align="justify">
+            Please describe the problem you want to report. Be as descriptive as
+            possible. Your signed in user and a reference to the current page
+            will automatically be amended to the alarm so that the receiver can
+            reach out to you if necessary.
+          </Typography>
+        </Alert>
+        {!initialAlertSource ? (
+          <Autocomplete
+            disabled={isLoading}
+            options={alertSources}
+            value={alertSource}
+            classes={{
+              root: classes.formControl,
+              option: classes.option,
+            }}
+            onChange={(_event: any, newValue: any) => {
+              setAlertSource(newValue);
+            }}
+            autoHighlight
+            getOptionLabel={a => a.name}
+            renderOption={a => (
+              <div className={classes.optionWrapper}>
+                <img
+                  src={prefersDarkMode ? a.lightIconUrl : a.iconUrl}
+                  alt={a.name}
+                  className={classes.sourceImage}
+                />
+                <Typography noWrap>{a.name}</Typography>
+              </div>
+            )}
+            renderInput={params => (
+              <TextField
+                {...params}
+                label="Alert Source"
+                variant="outlined"
+                margin="normal"
+                inputProps={{
+                  ...params.inputProps,
+                  autoComplete: 'new-password', // disable autocomplete and autofill
+                }}
+              />
+            )}
+          />
+        ) : null}
+        <TextField
+          disabled={isLoading}
+          label="Summary"
+          fullWidth
+          margin="normal"
+          variant="outlined"
+          classes={{
+            root: classes.formControl,
+          }}
+          value={summary}
+          onChange={event => {
+            setSummary(event.target.value);
+          }}
+        />
+        <TextField
+          disabled={isLoading}
+          label="Details"
+          fullWidth
+          multiline
+          rows={4}
+          margin="normal"
+          variant="outlined"
+          classes={{
+            root: classes.formControl,
+          }}
+          value={details}
+          onChange={event => {
+            setDetails(event.target.value);
+          }}
+        />
+      </DialogContent>
+      <DialogActions>
+        <Button
+          disabled={!canCreate}
+          onClick={handleCreate}
+          color="secondary"
+          variant="contained"
+        >
+          Create
+        </Button>
+        <Button onClick={handleClose} color="primary">
+          Cancel
+        </Button>
+      </DialogActions>
+    </Dialog>
+  );
+};
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { StatusError, StatusOK } from '@backstage/core';
+import { makeStyles } from '@material-ui/core/styles';
+import Tooltip from '@material-ui/core/Tooltip';
+import { ACCEPTED, Incident, PENDING, RESOLVED } from '../../types';
+
+const useStyles = makeStyles({
+  denseListIcon: {
+    marginRight: 0,
+    display: 'flex',
+    flexDirection: 'column',
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+});
+
+export const incidentStatusLabels = {
+  [RESOLVED]: 'Resolved',
+  [ACCEPTED]: 'Accepted',
+  [PENDING]: 'Pending',
+} as Record<string, string>;
+
+export const IncidentStatus = ({ incident }: { incident: Incident }) => {
+  const classes = useStyles();
+
+  return (
+    <Tooltip title={incident.status} placement="top">
+      <div className={classes.denseListIcon}>
+        {incident.status === 'PENDING' ? <StatusError /> : <StatusOK />}
+      </div>
+    </Tooltip>
+  );
+};
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './IncidentActionsMenu';
+export * from './IncidentStatus';
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { Content, ContentHeader, SupportButton } from '@backstage/core';
+import Button from '@material-ui/core/Button';
+import AddIcon from '@material-ui/icons/Add';
+import { UnauthorizedError } from '../../api';
+import Alert from '@material-ui/lab/Alert';
+import { IncidentsTable } from './IncidentsTable';
+import { MissingAuthorizationHeaderError } from '../Errors';
+import { useIncidents } from '../../hooks/useIncidents';
+import { IncidentNewModal } from '../Incident/IncidentNewModal';
+
+export const IncidentsPage = () => {
+  const [
+    { tableState, states, incidents, incidentsCount, isLoading, error },
+    {
+      onIncidentStatesChange,
+      onChangePage,
+      onChangeRowsPerPage,
+      onIncidentChanged,
+      refetchIncidents,
+      setIsLoading,
+    },
+  ] = useIncidents(true);
+
+  const [isModalOpened, setIsModalOpened] = React.useState(false);
+
+  const handleCreateNewIncidentClick = () => {
+    setIsModalOpened(true);
+  };
+
+  if (error) {
+    if (error instanceof UnauthorizedError) {
+      return <MissingAuthorizationHeaderError />;
+    }
+
+    return (
+      <Alert data-testid="error-message" severity="error">
+        {error.message}
+      </Alert>
+    );
+  }
+
+  return (
+    <Content>
+      <ContentHeader title="Incidents">
+        <Button
+          variant="contained"
+          color="primary"
+          size="small"
+          startIcon={<AddIcon />}
+          onClick={handleCreateNewIncidentClick}
+        >
+          Create Incident
+        </Button>
+        <IncidentNewModal
+          isModalOpened={isModalOpened}
+          setIsModalOpened={setIsModalOpened}
+          refetchIncidents={refetchIncidents}
+        />
+        <SupportButton>
+          This helps you to bring iLert into your developer portal.
+        </SupportButton>
+      </ContentHeader>
+      <IncidentsTable
+        incidents={incidents}
+        incidentsCount={incidentsCount}
+        tableState={tableState}
+        states={states}
+        onIncidentChanged={onIncidentChanged}
+        onIncidentStatesChange={onIncidentStatesChange}
+        onChangePage={onChangePage}
+        onChangeRowsPerPage={onChangeRowsPerPage}
+        isLoading={isLoading}
+        setIsLoading={setIsLoading}
+      />
+    </Content>
+  );
+};
@@ -0,0 +1,253 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { Table, TableColumn, useApi } from '@backstage/core';
+import { makeStyles } from '@material-ui/core/styles';
+import { ilertApiRef, TableState } from '../../api';
+import { Incident, IncidentStatus } from '../../types';
+import { StatusChip } from './StatusChip';
+import { AlertSourceLink } from '../AlertSource/AlertSourceLink';
+import { TableTitle } from './TableTitle';
+import Typography from '@material-ui/core/Typography';
+import moment from 'moment';
+import { IncidentActionsMenu } from '../Incident/IncidentActionsMenu';
+import { IncidentLink } from '../Incident/IncidentLink';
+
+const useStyles = makeStyles(theme => ({
+  empty: {
+    padding: theme.spacing(2),
+    display: 'flex',
+    justifyContent: 'center',
+  },
+}));
+
+export const IncidentsTable = ({
+  incidents,
+  incidentsCount,
+  tableState,
+  states,
+  isLoading,
+  onIncidentChanged,
+  setIsLoading,
+  onIncidentStatesChange,
+  onChangePage,
+  onChangeRowsPerPage,
+  compact,
+}: {
+  incidents: Incident[];
+  incidentsCount: number;
+  tableState: TableState;
+  states: IncidentStatus[];
+  isLoading: boolean;
+  onIncidentChanged: (incident: Incident) => void;
+  setIsLoading: (isLoading: boolean) => void;
+  onIncidentStatesChange: (states: IncidentStatus[]) => void;
+  onChangePage: (page: number) => void;
+  onChangeRowsPerPage: (pageSize: number) => void;
+  compact?: boolean;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const classes = useStyles();
+
+  const xsColumnStyle = {
+    width: '5%',
+    maxWidth: '5%',
+  };
+  const smColumnStyle = {
+    width: '10%',
+    maxWidth: '10%',
+  };
+  const mdColumnStyle = {
+    width: '15%',
+    maxWidth: '15%',
+  };
+  const lgColumnStyle = {
+    width: '20%',
+    maxWidth: '20%',
+  };
+  const xlColumnStyle = {
+    width: '30%',
+    maxWidth: '30%',
+  };
+
+  const idColumn: TableColumn = {
+    title: 'ID',
+    field: 'id',
+    highlight: true,
+    cellStyle: smColumnStyle,
+    headerStyle: smColumnStyle,
+    render: rowData => <IncidentLink incident={rowData as Incident} />,
+  };
+  const summaryColumn: TableColumn = {
+    title: 'Summary',
+    field: 'summary',
+    cellStyle: !compact ? xlColumnStyle : undefined,
+    headerStyle: !compact ? xlColumnStyle : undefined,
+    render: rowData => <Typography>{(rowData as Incident).summary}</Typography>,
+  };
+  const sourceColumn: TableColumn = {
+    title: 'Source',
+    field: 'source',
+    cellStyle: mdColumnStyle,
+    headerStyle: mdColumnStyle,
+    render: rowData => (
+      <AlertSourceLink alertSource={(rowData as Incident).alertSource} />
+    ),
+  };
+  const durationColumn: TableColumn = {
+    title: 'Duration',
+    field: 'reportTime',
+    type: 'datetime',
+    cellStyle: smColumnStyle,
+    headerStyle: smColumnStyle,
+    render: rowData => (
+      <Typography noWrap>
+        {(rowData as Incident).status !== 'RESOLVED'
+          ? moment
+              .duration(moment((rowData as Incident).reportTime).diff(moment()))
+              .humanize()
+          : moment
+              .duration(
+                moment((rowData as Incident).reportTime).diff(
+                  moment((rowData as Incident).resolvedOn),
+                ),
+              )
+              .humanize()}
+      </Typography>
+    ),
+  };
+  const assignedToColumn: TableColumn = {
+    title: 'Assigned to',
+    field: 'assignedTo',
+    cellStyle: !compact ? mdColumnStyle : lgColumnStyle,
+    headerStyle: !compact ? mdColumnStyle : lgColumnStyle,
+    render: rowData => (
+      <Typography noWrap>
+        {ilertApi.getUserInitials((rowData as Incident).assignedTo)}
+      </Typography>
+    ),
+  };
+  const priorityColumn: TableColumn = {
+    title: 'Priority',
+    field: 'priority',
+    cellStyle: smColumnStyle,
+    headerStyle: smColumnStyle,
+    render: rowData => (
+      <Typography noWrap>
+        {(rowData as Incident).priority === 'HIGH' ? 'High' : 'Low'}
+      </Typography>
+    ),
+  };
+  const statusColumn: TableColumn = {
+    title: 'Status',
+    field: 'status',
+    cellStyle: xsColumnStyle,
+    headerStyle: xsColumnStyle,
+    render: rowData => <StatusChip incident={rowData as Incident} />,
+  };
+  const actionsColumn: TableColumn = {
+    title: '',
+    field: '',
+    cellStyle: xsColumnStyle,
+    headerStyle: xsColumnStyle,
+    render: rowData => (
+      <IncidentActionsMenu
+        incident={rowData as Incident}
+        onIncidentChanged={onIncidentChanged}
+        setIsLoading={setIsLoading}
+      />
+    ),
+  };
+
+  const columns: TableColumn[] = compact
+    ? [
+        summaryColumn,
+        durationColumn,
+        assignedToColumn,
+        statusColumn,
+        actionsColumn,
+      ]
+    : [
+        idColumn,
+        summaryColumn,
+        sourceColumn,
+        durationColumn,
+        assignedToColumn,
+        priorityColumn,
+        statusColumn,
+        actionsColumn,
+      ];
+  let tableStyle: React.CSSProperties = {};
+  if (compact) {
+    tableStyle = {
+      width: '100%',
+      maxWidth: '100%',
+      minWidth: '0',
+      height: 'calc(100% - 10px)',
+      boxShadow: 'none !important',
+      borderRadius: 'none !important',
+    };
+  } else {
+    tableStyle = {
+      width: '100%',
+      maxWidth: '100%',
+    };
+  }
+
+  return (
+    <Table
+      style={tableStyle}
+      options={{
+        sorting: false,
+        search: !compact,
+        paging: !compact,
+        actionsColumnIndex: -1,
+        pageSize: tableState.pageSize,
+        pageSizeOptions: !compact ? [10, 20, 50, 100] : [3, 10, 20, 50, 100],
+        padding: 'dense',
+        loadingType: 'overlay',
+        showEmptyDataSourceMessage: !isLoading,
+        showTitle: true,
+        toolbar: true,
+      }}
+      emptyContent={
+        <Typography color="textSecondary" className={classes.empty}>
+          No incidents right now
+        </Typography>
+      }
+      title={
+        !compact ? (
+          <TableTitle
+            incidentStates={states}
+            onIncidentStatesChange={onIncidentStatesChange}
+          />
+        ) : (
+          <Typography variant="button" color="textSecondary">
+            INCIDENTS
+          </Typography>
+        )
+      }
+      page={tableState.page}
+      totalCount={incidentsCount}
+      onChangePage={onChangePage}
+      onChangeRowsPerPage={onChangeRowsPerPage}
+      // localization={{ header: { actions: undefined } }}
+      columns={columns}
+      data={incidents}
+      isLoading={isLoading}
+    />
+  );
+};
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { Chip, withStyles } from '@material-ui/core';
+import { Incident, PENDING, ACCEPTED, RESOLVED } from '../../types';
+import { incidentStatusLabels } from '../Incident/IncidentStatus';
+
+const ResolvedChip = withStyles({
+  root: {
+    backgroundColor: '#4caf50',
+    color: 'white',
+    margin: 0,
+  },
+})(Chip);
+
+const AcceptedChip = withStyles({
+  root: {
+    backgroundColor: '#ffb74d',
+    color: 'white',
+    margin: 0,
+  },
+})(Chip);
+const PendingChip = withStyles({
+  root: {
+    backgroundColor: '#d32f2f',
+    color: 'white',
+    margin: 0,
+  },
+})(Chip);
+
+export const StatusChip = ({ incident }: { incident: Incident }) => {
+  const label = `${incidentStatusLabels[incident.status]}`;
+
+  switch (incident.status) {
+    case RESOLVED:
+      return <ResolvedChip label={label} size="small" />;
+    case ACCEPTED:
+      return <AcceptedChip label={label} size="small" />;
+    case PENDING:
+      return <PendingChip label={label} size="small" />;
+    default:
+      return <Chip label={label} size="small" />;
+  }
+};
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { PENDING, ACCEPTED, RESOLVED, IncidentStatus } from '../../types';
+import { incidentStatusLabels } from '../Incident/IncidentStatus';
+import FormControl from '@material-ui/core/FormControl';
+import ListItemText from '@material-ui/core/ListItemText';
+import Select from '@material-ui/core/Select';
+import Typography from '@material-ui/core/Typography';
+import MenuItem from '@material-ui/core/MenuItem';
+import Checkbox from '@material-ui/core/Checkbox';
+import { makeStyles } from '@material-ui/core/styles';
+
+const ITEM_HEIGHT = 48;
+const ITEM_PADDING_TOP = 8;
+const MenuProps = {
+  PaperProps: {
+    style: {
+      maxHeight: ITEM_HEIGHT * 4.5 + ITEM_PADDING_TOP,
+      width: 250,
+    },
+  },
+};
+
+const useStyles = makeStyles({
+  root: {
+    display: 'flex',
+  },
+  label: {
+    marginTop: 8,
+    marginRight: 4,
+  },
+  formControl: {
+    minWidth: 120,
+    maxWidth: 300,
+  },
+  grow: {
+    flexGrow: 1,
+  },
+});
+
+export const TableTitle = ({
+  incidentStates,
+  onIncidentStatesChange,
+}: {
+  incidentStates: IncidentStatus[];
+  onIncidentStatesChange: (states: IncidentStatus[]) => void;
+}) => {
+  const classes = useStyles();
+  const handleIncidentStatusSelectChange = (event: any) => {
+    onIncidentStatesChange(event.target.value);
+  };
+
+  return (
+    <div className={classes.root}>
+      <Typography noWrap className={classes.label}>
+        Status:
+      </Typography>
+      <FormControl
+        className={classes.formControl}
+        variant="outlined"
+        size="small"
+      >
+        <Select
+          id="incidents-status-select"
+          multiple
+          value={incidentStates}
+          onChange={handleIncidentStatusSelectChange}
+          renderValue={(selected: any) => selected.join(', ')}
+          MenuProps={MenuProps}
+        >
+          {[PENDING, ACCEPTED, RESOLVED].map(state => (
+            <MenuItem key={state} value={state}>
+              <Checkbox
+                checked={incidentStates.indexOf(state as IncidentStatus) > -1}
+              />
+              <ListItemText primary={incidentStatusLabels[state]} />
+            </MenuItem>
+          ))}
+        </Select>
+      </FormControl>
+    </div>
+  );
+};
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './IncidentsPage';
+export * from './IncidentsTable';
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { useApi, ItemCardGrid, Progress } from '@backstage/core';
+import { makeStyles } from '@material-ui/core/styles';
+import Card from '@material-ui/core/Card';
+import CardContent from '@material-ui/core/CardContent';
+import CardHeader from '@material-ui/core/CardHeader';
+import Typography from '@material-ui/core/Typography';
+import Link from '@material-ui/core/Link';
+import { Schedule } from '../../types';
+import { ilertApiRef } from '../../api';
+import { OnCallShiftItem } from './OnCallShiftItem';
+
+const useStyles = makeStyles(() => ({
+  card: {
+    margin: 16,
+    width: 'calc(100% - 32px)',
+  },
+
+  cardHeader: {
+    maxWidth: '100%',
+  },
+
+  cardContent: {
+    marginLeft: 80,
+    borderLeft: '1px #808289 solid',
+    position: 'relative',
+  },
+
+  indicatorNext: {
+    position: 'absolute',
+    top: 'calc(40% - 10px)',
+    left: -8,
+    width: 16,
+    height: 16,
+    background: '#92949c !important',
+    borderRadius: '50%',
+  },
+
+  indicatorCurrent: {
+    position: 'absolute',
+    top: 'calc(40% - 10px)',
+    left: -8,
+    width: 16,
+    height: 16,
+    background: '#ffb74d !important',
+    borderRadius: '50%',
+  },
+
+  beforeText: {
+    position: 'absolute',
+    top: 'calc(31% - 10px)',
+    left: -78,
+    width: 65,
+    height: 20,
+    textAlign: 'center',
+    color: '#808289',
+  },
+
+  marginBottom: {
+    marginBottom: 16,
+  },
+
+  link: {
+    fontSize: '1.5rem',
+    fontWeight: 700,
+    overflow: 'hidden',
+    whiteSpace: 'nowrap',
+    textOverflow: 'ellipsis',
+    display: 'block',
+  },
+}));
+
+export const OnCallSchedulesGrid = ({
+  onCallSchedules,
+  isLoading,
+  refetchOnCallSchedules,
+}: {
+  onCallSchedules: Schedule[];
+  isLoading: boolean;
+  refetchOnCallSchedules: () => void;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const classes = useStyles();
+
+  if (isLoading) {
+    return <Progress />;
+  }
+  return (
+    <ItemCardGrid data-testid="docs-explore">
+      {!onCallSchedules?.length
+        ? null
+        : onCallSchedules.map((schedule, index) => (
+            <Card key={index}>
+              <CardHeader
+                classes={{ content: classes.cardHeader }}
+                title={
+                  <Link
+                    href={ilertApi.getScheduleDetailsURL(schedule)}
+                    className={classes.link}
+                  >
+                    {schedule.name}
+                  </Link>
+                }
+              />
+
+              <CardContent className={classes.cardContent}>
+                <div className={classes.indicatorCurrent} />
+                <OnCallShiftItem
+                  shift={schedule.currentShift}
+                  scheduleId={schedule.id}
+                  refetchOnCallSchedules={refetchOnCallSchedules}
+                />
+                <Typography className={classes.beforeText} variant="body2">
+                  On call now
+                </Typography>
+              </CardContent>
+
+              <CardContent
+                className={`${classes.cardContent} ${classes.marginBottom}`}
+              >
+                <div className={classes.indicatorNext} />
+                <OnCallShiftItem
+                  shift={schedule.nextShift}
+                  scheduleId={schedule.id}
+                  refetchOnCallSchedules={refetchOnCallSchedules}
+                />
+                <Typography className={classes.beforeText} variant="body2">
+                  Next on call
+                </Typography>
+              </CardContent>
+            </Card>
+          ))}
+    </ItemCardGrid>
+  );
+};
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { Content, ContentHeader, SupportButton } from '@backstage/core';
+import { UnauthorizedError } from '../../api';
+import Alert from '@material-ui/lab/Alert';
+import { OnCallSchedulesGrid } from './OnCallSchedulesGrid';
+import { MissingAuthorizationHeaderError } from '../Errors';
+import { useOnCallSchedules } from '../../hooks/useOnCallSchedules';
+
+export const OnCallSchedulesPage = () => {
+  const [
+    { onCallSchedules, isLoading, error },
+    { refetchOnCallSchedules },
+  ] = useOnCallSchedules();
+
+  if (error) {
+    if (error instanceof UnauthorizedError) {
+      return <MissingAuthorizationHeaderError />;
+    }
+
+    return (
+      <Alert data-testid="error-message" severity="error">
+        {error.message}
+      </Alert>
+    );
+  }
+
+  return (
+    <Content>
+      <ContentHeader title="Who is on call?">
+        <SupportButton>
+          This helps you to bring iLert into your developer portal.
+        </SupportButton>
+      </ContentHeader>
+      <OnCallSchedulesGrid
+        onCallSchedules={onCallSchedules}
+        isLoading={isLoading}
+        refetchOnCallSchedules={refetchOnCallSchedules}
+      />
+    </Content>
+  );
+};
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import Button from '@material-ui/core/Button';
+import Grid from '@material-ui/core/Grid';
+import Typography from '@material-ui/core/Typography';
+import RepeatIcon from '@material-ui/icons/Repeat';
+import { Shift } from '../../types';
+import moment from 'moment';
+import { makeStyles } from '@material-ui/core/styles';
+import { ShiftOverrideModal } from '../Shift/ShiftOverrideModal';
+
+const useStyles = makeStyles({
+  button: {
+    marginTop: 4,
+    padding: 0,
+    lineHeight: 1.8,
+    '& span': {
+      lineHeight: 1.8,
+      fontSize: '0.65rem',
+    },
+    '& svg': {
+      fontSize: '0.85rem !important',
+    },
+  },
+});
+
+export const OnCallShiftItem = ({
+  scheduleId,
+  shift,
+  refetchOnCallSchedules,
+}: {
+  scheduleId: number;
+  shift: Shift;
+  refetchOnCallSchedules: () => void;
+}) => {
+  const classes = useStyles();
+  const [isModalOpened, setIsModalOpened] = React.useState(false);
+
+  const handleOverride = () => {
+    setIsModalOpened(true);
+  };
+
+  if (!shift || !shift.start) {
+    return (
+      <Grid container spacing={0}>
+        <Grid item sm={12}>
+          <Typography variant="subtitle1" color="textSecondary">
+            Nobody
+          </Typography>
+        </Grid>
+      </Grid>
+    );
+  }
+
+  return (
+    <Grid container spacing={0}>
+      {shift && shift.user ? (
+        <Grid item sm={12}>
+          <Typography variant="subtitle1" noWrap>
+            {`${shift.user.firstName} ${shift.user.lastName} (${shift.user.username})`}
+          </Typography>
+        </Grid>
+      ) : null}
+      <Grid item sm={12}>
+        <Typography variant="subtitle2" color="textSecondary">
+          {`${moment(shift.start).format('D MMM, HH:mm')} - ${moment(
+            shift.end,
+          ).format('D MMM, HH:mm')}`}
+        </Typography>
+      </Grid>
+      <Grid item sm={12}>
+        <Button
+          color="primary"
+          size="small"
+          className={classes.button}
+          startIcon={<RepeatIcon />}
+          onClick={handleOverride}
+        >
+          <Typography variant="overline">Override shift</Typography>
+        </Button>
+        <ShiftOverrideModal
+          scheduleId={scheduleId}
+          shift={shift}
+          refetchOnCallSchedules={refetchOnCallSchedules}
+          isModalOpened={isModalOpened}
+          setIsModalOpened={setIsModalOpened}
+        />
+      </Grid>
+    </Grid>
+  );
+};
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './OnCallSchedulesPage';
+export * from './OnCallSchedulesGrid';
@@ -0,0 +1,196 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { alertApiRef, useApi } from '@backstage/core';
+import { makeStyles } from '@material-ui/core/styles';
+import Button from '@material-ui/core/Button';
+import TextField from '@material-ui/core/TextField';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import Autocomplete from '@material-ui/lab/Autocomplete';
+import { Typography } from '@material-ui/core';
+import { ilertApiRef } from '../../api';
+import { useShiftOverride } from '../../hooks/useShiftOverride';
+import { Shift } from '../../types';
+import { DateTimePicker, MuiPickersUtilsProvider } from '@material-ui/pickers';
+import DateFnsUtils from '@date-io/date-fns';
+
+const useStyles = makeStyles(() => ({
+  container: {
+    display: 'flex',
+    flexWrap: 'wrap',
+  },
+  formControl: {
+    minWidth: 120,
+    width: '100%',
+  },
+  option: {
+    fontSize: 15,
+    '& > span': {
+      marginRight: 10,
+      fontSize: 18,
+    },
+  },
+  optionWrapper: {
+    display: 'flex',
+    width: '100%',
+  },
+  sourceImage: {
+    height: 22,
+    paddingRight: 4,
+  },
+  grow: {
+    flexGrow: 1,
+  },
+}));
+
+export const ShiftOverrideModal = ({
+  scheduleId,
+  shift,
+  refetchOnCallSchedules,
+  isModalOpened,
+  setIsModalOpened,
+}: {
+  scheduleId: number;
+  shift: Shift;
+  refetchOnCallSchedules: () => void;
+  isModalOpened: boolean;
+  setIsModalOpened: (isModalOpened: boolean) => void;
+}) => {
+  const [
+    { isLoading, users, user, start, end },
+    { setUser, setStart, setEnd, setIsLoading },
+  ] = useShiftOverride(shift, isModalOpened);
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const classes = useStyles();
+
+  const handleClose = () => {
+    setIsModalOpened(false);
+  };
+
+  const handleOverride = () => {
+    if (!shift || !shift.user) {
+      return;
+    }
+    setIsLoading(true);
+    setTimeout(async () => {
+      try {
+        const success = await ilertApi.overrideShift(
+          scheduleId,
+          user.id,
+          start,
+          end,
+        );
+        if (success) {
+          alertApi.post({ message: 'Shift overridden.' });
+          refetchOnCallSchedules();
+        }
+      } catch (err) {
+        alertApi.post({ message: err, severity: 'error' });
+      }
+      setIsModalOpened(false);
+    }, 250);
+  };
+
+  if (!shift) {
+    return null;
+  }
+
+  return (
+    <Dialog
+      open={isModalOpened}
+      onClose={handleClose}
+      aria-labelledby="override-shift-form-title"
+    >
+      <DialogTitle id="override-shift-form-title">Shift override</DialogTitle>
+      <DialogContent>
+        <MuiPickersUtilsProvider utils={DateFnsUtils}>
+          <Autocomplete
+            disabled={isLoading}
+            options={users}
+            value={user}
+            classes={{
+              root: classes.formControl,
+              option: classes.option,
+            }}
+            onChange={(_event: any, newValue: any) => {
+              setUser(newValue);
+            }}
+            autoHighlight
+            getOptionLabel={a => ilertApi.getUserInitials(a)}
+            renderOption={a => (
+              <div className={classes.optionWrapper}>
+                <Typography noWrap>{ilertApi.getUserInitials(a)}</Typography>
+              </div>
+            )}
+            renderInput={params => (
+              <TextField
+                {...params}
+                label="User"
+                variant="outlined"
+                fullWidth
+                inputProps={{
+                  ...params.inputProps,
+                  autoComplete: 'new-password', // disable autocomplete and autofill
+                }}
+              />
+            )}
+          />
+          <DateTimePicker
+            label="Start"
+            inputVariant="outlined"
+            fullWidth
+            margin="normal"
+            ampm={false}
+            value={start}
+            className={classes.formControl}
+            onChange={date => {
+              setStart(date ? date.toISOString() : '');
+            }}
+          />
+          <DateTimePicker
+            label="End"
+            inputVariant="outlined"
+            fullWidth
+            margin="normal"
+            ampm={false}
+            value={end}
+            className={classes.formControl}
+            onChange={date => {
+              setEnd(date ? date.toISOString() : '');
+            }}
+          />
+        </MuiPickersUtilsProvider>
+      </DialogContent>
+      <DialogActions>
+        <Button
+          disabled={isLoading}
+          onClick={handleOverride}
+          color="primary"
+          variant="contained"
+        >
+          Override
+        </Button>
+        <Button disabled={isLoading} onClick={handleClose} color="primary">
+          Cancel
+        </Button>
+      </DialogActions>
+    </Dialog>
+  );
+};
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { alertApiRef, useApi } from '@backstage/core';
+import { IconButton, Menu, MenuItem, Typography } from '@material-ui/core';
+import Link from '@material-ui/core/Link';
+import MoreVertIcon from '@material-ui/icons/MoreVert';
+
+import { ilertApiRef } from '../../api';
+import { UptimeMonitor } from '../../types';
+
+export const UptimeMonitorActionsMenu = ({
+  uptimeMonitor,
+  onUptimeMonitorChanged,
+}: {
+  uptimeMonitor: UptimeMonitor;
+  onUptimeMonitorChanged?: (uptimeMonitor: UptimeMonitor) => void;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const alertApi = useApi(alertApiRef);
+  const [anchorEl, setAnchorEl] = React.useState<null | HTMLElement>(null);
+  const callback = onUptimeMonitorChanged || ((_: UptimeMonitor): void => {});
+
+  const handleClick = (event: React.MouseEvent<HTMLElement>) => {
+    setAnchorEl(event.currentTarget);
+  };
+
+  const handleCloseMenu = () => {
+    setAnchorEl(null);
+  };
+
+  const handlePause = async (): Promise<void> => {
+    try {
+      const newUptimeMonitor = await ilertApi.pauseUptimeMonitor(uptimeMonitor);
+      handleCloseMenu();
+      alertApi.post({ message: 'Uptime monitor paused.' });
+
+      callback(newUptimeMonitor);
+    } catch (err) {
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+
+  const handleResume = async (): Promise<void> => {
+    try {
+      const newUptimeMonitor = await ilertApi.resumeUptimeMonitor(
+        uptimeMonitor,
+      );
+      handleCloseMenu();
+      alertApi.post({ message: 'Uptime monitor resumed.' });
+
+      callback(newUptimeMonitor);
+    } catch (err) {
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+
+  const handleOpenReport = async (): Promise<void> => {
+    try {
+      const um = await ilertApi.fetchUptimeMonitor(uptimeMonitor.id);
+      handleCloseMenu();
+      window.open(um.shareUrl, '_blank');
+    } catch (err) {
+      alertApi.post({ message: err, severity: 'error' });
+    }
+  };
+
+  return (
+    <>
+      <IconButton
+        aria-label="more"
+        aria-controls="long-menu"
+        aria-haspopup="true"
+        onClick={handleClick}
+        size="small"
+      >
+        <MoreVertIcon />
+      </IconButton>
+      <Menu
+        id={`uptime-monitor-actions-menu-${uptimeMonitor.id}`}
+        anchorEl={anchorEl}
+        keepMounted
+        open={Boolean(anchorEl)}
+        onClose={handleCloseMenu}
+        PaperProps={{
+          style: { maxHeight: 48 * 4.5 },
+        }}
+      >
+        {uptimeMonitor.paused ? (
+          <MenuItem key="ack" onClick={handleResume}>
+            <Typography variant="inherit" noWrap>
+              Resume
+            </Typography>
+          </MenuItem>
+        ) : null}
+
+        {!uptimeMonitor.paused ? (
+          <MenuItem key="close" onClick={handlePause}>
+            <Typography variant="inherit" noWrap>
+              Pause
+            </Typography>
+          </MenuItem>
+        ) : null}
+
+        <MenuItem key="report" onClick={handleCloseMenu}>
+          <Typography variant="inherit" noWrap>
+            <Link onClick={handleOpenReport}>View Report</Link>
+          </Typography>
+        </MenuItem>
+
+        <MenuItem key="details" onClick={handleCloseMenu}>
+          <Typography variant="inherit" noWrap>
+            <Link href={ilertApi.getUptimeMonitorDetailsURL(uptimeMonitor)}>
+              View in iLert
+            </Link>
+          </Typography>
+        </MenuItem>
+      </Menu>
+    </>
+  );
+};
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { useApi } from '@backstage/core';
+import Link from '@material-ui/core/Link';
+import { makeStyles } from '@material-ui/core/styles';
+import { UptimeMonitor } from '../../types';
+import { ilertApiRef } from '../../api';
+
+const useStyles = makeStyles({
+  link: {
+    lineHeight: '22px',
+  },
+});
+
+export const UptimeMonitorLink = ({
+  uptimeMonitor,
+}: {
+  uptimeMonitor: UptimeMonitor | null;
+}) => {
+  const ilertApi = useApi(ilertApiRef);
+  const classes = useStyles();
+
+  if (!uptimeMonitor) {
+    return null;
+  }
+
+  return (
+    <Link
+      className={classes.link}
+      href={ilertApi.getUptimeMonitorDetailsURL(uptimeMonitor)}
+    >
+      #{uptimeMonitor.id}
+    </Link>
+  );
+};
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './UptimeMonitorActionsMenu';
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import Chip from '@material-ui/core/Chip';
+import { withStyles } from '@material-ui/core/styles';
+import { UptimeMonitor } from '../../types';
+
+const UpChip = withStyles({
+  root: {
+    backgroundColor: '#4caf50',
+    color: 'white',
+    margin: 0,
+  },
+})(Chip);
+
+const DownChip = withStyles({
+  root: {
+    backgroundColor: '#d32f2f',
+    color: 'white',
+    margin: 0,
+  },
+})(Chip);
+
+const UnknownChip = withStyles({
+  root: {
+    backgroundColor: '#92949c',
+    color: 'white',
+    margin: 0,
+  },
+})(Chip);
+
+export const uptimeMonitorStatusLabels = {
+  ['up']: 'Up',
+  ['down']: 'Down',
+  ['unknown']: 'Unknown',
+} as Record<string, string>;
+
+export const StatusChip = ({
+  uptimeMonitor,
+}: {
+  uptimeMonitor: UptimeMonitor;
+}) => {
+  let label = `${uptimeMonitorStatusLabels[uptimeMonitor.status]}`;
+
+  if (uptimeMonitor.paused) {
+    label = 'Paused';
+    return <UnknownChip label={label} size="small" />;
+  }
+
+  switch (uptimeMonitor.status) {
+    case 'up':
+      return <UpChip label={label} size="small" />;
+    case 'down':
+      return <DownChip label={label} size="small" />;
+    case 'unknown':
+      return <UnknownChip label={label} size="small" />;
+    default:
+      return <Chip label={label} size="small" />;
+  }
+};
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { UptimeMonitor } from '../../types';
+import Typography from '@material-ui/core/Typography';
+
+export const UptimeMonitorCheckType = ({
+  uptimeMonitor,
+}: {
+  uptimeMonitor: UptimeMonitor;
+}) => {
+  switch (uptimeMonitor.region) {
+    case 'EU':
+      return (
+        <Typography
+          noWrap
+        >{`${uptimeMonitor.checkType.toUpperCase()} 🇩🇪`}</Typography>
+      );
+    default:
+      return (
+        <Typography
+          noWrap
+        >{`${uptimeMonitor.checkType.toUpperCase()} 🇺🇸`}</Typography>
+      );
+  }
+};
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { Content, ContentHeader, SupportButton } from '@backstage/core';
+import { UnauthorizedError } from '../../api';
+import Alert from '@material-ui/lab/Alert';
+import { UptimeMonitorsTable } from './UptimeMonitorsTable';
+import { MissingAuthorizationHeaderError } from '../Errors';
+import { useUptimeMonitors } from '../../hooks/useUptimeMonitors';
+
+export const UptimeMonitorsPage = () => {
+  const [
+    { tableState, uptimeMonitors, isLoading, error },
+    { onChangePage, onChangeRowsPerPage, onUptimeMonitorChanged },
+  ] = useUptimeMonitors();
+
+  if (error) {
+    if (error instanceof UnauthorizedError) {
+      return <MissingAuthorizationHeaderError />;
+    }
+
+    return (
+      <Alert data-testid="error-message" severity="error">
+        {error.message}
+      </Alert>
+    );
+  }
+
+  return (
+    <Content>
+      <ContentHeader title="Uptime Monitors">
+        <SupportButton>
+          This helps you to bring iLert into your developer portal.
+        </SupportButton>
+      </ContentHeader>
+      <UptimeMonitorsTable
+        uptimeMonitors={uptimeMonitors}
+        tableState={tableState}
+        isLoading={isLoading}
+        onChangePage={onChangePage}
+        onChangeRowsPerPage={onChangeRowsPerPage}
+        onUptimeMonitorChanged={onUptimeMonitorChanged}
+      />
+    </Content>
+  );
+};
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { makeStyles } from '@material-ui/core/styles';
+import { Table, TableColumn } from '@backstage/core';
+import { TableState } from '../../api';
+import { UptimeMonitor } from '../../types';
+import { StatusChip } from './StatusChip';
+import Typography from '@material-ui/core/Typography';
+import moment from 'moment';
+import { EscalationPolicyLink } from '../EscalationPolicy/EscalationPolicyLink';
+import { UptimeMonitorCheckType } from './UptimeMonitorCheckType';
+import { UptimeMonitorActionsMenu } from '../UptimeMonitor/UptimeMonitorActionsMenu';
+import { UptimeMonitorLink } from '../UptimeMonitor/UptimeMonitorLink';
+
+const useStyles = makeStyles(theme => ({
+  empty: {
+    padding: theme.spacing(2),
+    display: 'flex',
+    justifyContent: 'center',
+  },
+}));
+
+export const UptimeMonitorsTable = ({
+  uptimeMonitors,
+  tableState,
+  isLoading,
+  onChangePage,
+  onChangeRowsPerPage,
+  onUptimeMonitorChanged,
+}: {
+  uptimeMonitors: UptimeMonitor[];
+  tableState: TableState;
+  isLoading: boolean;
+  onChangePage: (page: number) => void;
+  onChangeRowsPerPage: (pageSize: number) => void;
+  onUptimeMonitorChanged: (uptimeMonitor: UptimeMonitor) => void;
+}) => {
+  const classes = useStyles();
+
+  const smColumnStyle = {
+    width: '5%',
+    maxWidth: '5%',
+  };
+  const mdColumnStyle = {
+    width: '10%',
+    maxWidth: '10%',
+  };
+  const lgColumnStyle = {
+    width: '15%',
+    maxWidth: '15%',
+  };
+
+  const columns: TableColumn[] = [
+    {
+      title: 'ID',
+      field: 'id',
+      highlight: true,
+      cellStyle: mdColumnStyle,
+      headerStyle: mdColumnStyle,
+      render: rowData => (
+        <UptimeMonitorLink uptimeMonitor={rowData as UptimeMonitor} />
+      ),
+    },
+    {
+      title: 'Name',
+      field: 'name',
+      render: rowData => (
+        <Typography>{(rowData as UptimeMonitor).name}</Typography>
+      ),
+    },
+    {
+      title: 'Check Type',
+      field: 'checkType',
+      cellStyle: lgColumnStyle,
+      headerStyle: lgColumnStyle,
+      render: rowData => (
+        <UptimeMonitorCheckType uptimeMonitor={rowData as UptimeMonitor} />
+      ),
+    },
+    {
+      title: 'Last state change',
+      field: 'lastStatusChange',
+      type: 'datetime',
+      cellStyle: mdColumnStyle,
+      headerStyle: mdColumnStyle,
+      render: rowData => (
+        <Typography noWrap>
+          {moment
+            .duration(
+              moment((rowData as UptimeMonitor).lastStatusChange).diff(
+                moment(),
+              ),
+            )
+            .humanize()}
+        </Typography>
+      ),
+    },
+    {
+      title: 'Escalation policy',
+      field: 'assignedTo',
+      cellStyle: lgColumnStyle,
+      headerStyle: lgColumnStyle,
+      render: rowData => (
+        <EscalationPolicyLink
+          escalationPolicy={(rowData as UptimeMonitor).escalationPolicy}
+        />
+      ),
+    },
+    {
+      title: 'Status',
+      field: 'status',
+      cellStyle: smColumnStyle,
+      headerStyle: smColumnStyle,
+      render: rowData => (
+        <StatusChip uptimeMonitor={rowData as UptimeMonitor} />
+      ),
+    },
+    {
+      title: '',
+      field: '',
+      cellStyle: smColumnStyle,
+      headerStyle: smColumnStyle,
+      render: rowData => (
+        <UptimeMonitorActionsMenu
+          uptimeMonitor={rowData as UptimeMonitor}
+          onUptimeMonitorChanged={onUptimeMonitorChanged}
+        />
+      ),
+    },
+  ];
+
+  return (
+    <Table
+      options={{
+        sorting: true,
+        search: true,
+        paging: true,
+        actionsColumnIndex: -1,
+        pageSize: tableState.pageSize,
+        pageSizeOptions: [10, 20, 50, 100],
+        padding: 'dense',
+        loadingType: 'overlay',
+        showEmptyDataSourceMessage: !isLoading,
+      }}
+      emptyContent={
+        <Typography color="textSecondary" className={classes.empty}>
+          No uptime monitor
+        </Typography>
+      }
+      page={tableState.page}
+      onChangePage={onChangePage}
+      onChangeRowsPerPage={onChangeRowsPerPage}
+      localization={{ header: { actions: undefined } }}
+      isLoading={isLoading}
+      columns={columns}
+      data={uptimeMonitors}
+    />
+  );
+};
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './UptimeMonitorsPage';
+export * from './UptimeMonitorsTable';
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export * from './ILertPage';
+export * from './ILertCard';
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export const ILERT_INTEGRATION_KEY = 'ilert.com/integration-key';
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { useEntity } from '@backstage/plugin-catalog-react';
+
+import { ILERT_INTEGRATION_KEY } from '../constants';
+
+export function useILertEntity() {
+  const { entity } = useEntity();
+  const integrationKey =
+    entity.metadata.annotations?.[ILERT_INTEGRATION_KEY] || '';
+  const name = entity.metadata.name;
+
+  return { integrationKey, name };
+}
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { ilertApiRef, UnauthorizedError } from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { AlertSource, UptimeMonitor } from '../types';
+
+export const useAlertSource = (integrationKey: string) => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [alertSource, setAlertSource] = React.useState<AlertSource | null>(
+    null,
+  );
+  const [isAlertSourceLoading, setIsAlertSourceLoading] = React.useState(false);
+  const [
+    uptimeMonitor,
+    setUptimeMonitor,
+  ] = React.useState<UptimeMonitor | null>(null);
+  const [isUptimeMonitorLoading, setIsUptimeMonitorLoading] = React.useState(
+    false,
+  );
+
+  const fetchAlertSourceCall = async () => {
+    try {
+      if (!integrationKey) {
+        return;
+      }
+      setIsAlertSourceLoading(true);
+      const data = await ilertApi.fetchAlertSource(integrationKey);
+      setAlertSource(data || null);
+      setIsAlertSourceLoading(false);
+    } catch (e) {
+      setIsAlertSourceLoading(false);
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  };
+
+  const {
+    error: alertSourceError,
+    retry: alertSourceRetry,
+  } = useAsyncRetry(fetchAlertSourceCall, [integrationKey]);
+
+  const fetchUptimeMonitorCall = async () => {
+    try {
+      if (!alertSource || alertSource.integrationType !== 'MONITOR') {
+        return;
+      }
+      setIsUptimeMonitorLoading(true);
+      const data = await ilertApi.fetchUptimeMonitor(alertSource.id);
+      setUptimeMonitor(data || null);
+      setIsUptimeMonitorLoading(false);
+    } catch (e) {
+      setIsUptimeMonitorLoading(false);
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  };
+
+  const {
+    error: uptimeMonitorError,
+    retry: uptimeMonitorRetry,
+  } = useAsyncRetry(fetchUptimeMonitorCall, [alertSource]);
+
+  const retry = () => {
+    alertSourceRetry();
+    uptimeMonitorRetry();
+  };
+
+  return [
+    {
+      alertSource,
+      uptimeMonitor,
+      error: alertSourceError || uptimeMonitorError,
+      isLoading: isAlertSourceLoading || isUptimeMonitorLoading,
+    },
+    {
+      retry,
+      setIsLoading: setIsAlertSourceLoading,
+      refetchAlertSource: fetchAlertSourceCall,
+      setAlertSource,
+    },
+  ] as const;
+};
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { ilertApiRef, UnauthorizedError } from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { Incident, IncidentResponder } from '../types';
+
+export const useAssignIncident = (incident: Incident | null, open: boolean) => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [incidentRespondersList, setIncidentRespondersList] = React.useState<
+    IncidentResponder[]
+  >([]);
+  const [
+    incidentResponder,
+    setIncidentResponder,
+  ] = React.useState<IncidentResponder | null>(null);
+  const [isLoading, setIsLoading] = React.useState(false);
+
+  const { error, retry } = useAsyncRetry(async () => {
+    try {
+      if (!incident || !open) {
+        return;
+      }
+      const data = await ilertApi.fetchIncidentResponders(incident);
+      if (data && Array.isArray(data)) {
+        const groups = [
+          'SUGGESTED',
+          'USER',
+          'ESCALATION_POLICY',
+          'ON_CALL_SCHEDULE',
+        ];
+        data.sort((a, b) => groups.indexOf(a.group) - groups.indexOf(b.group));
+        setIncidentRespondersList(data);
+      }
+    } catch (e) {
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  }, [incident, open]);
+
+  return [
+    {
+      incidentRespondersList,
+      incidentResponder,
+      error,
+      isLoading,
+    },
+    {
+      setIncidentRespondersList,
+      setIncidentResponder,
+      setIsLoading,
+      retry,
+    },
+  ] as const;
+};
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import {
+  GetIncidentsOpts,
+  ilertApiRef,
+  TableState,
+  UnauthorizedError,
+} from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { ACCEPTED, PENDING, Incident, IncidentStatus } from '../types';
+
+export const useIncidents = (
+  paging: boolean,
+  alertSources?: number[] | string[],
+) => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [tableState, setTableState] = React.useState<TableState>({
+    page: 0,
+    pageSize: 10,
+  });
+  const [states, setStates] = React.useState<IncidentStatus[]>([
+    ACCEPTED,
+    PENDING,
+  ]);
+  const [incidentsList, setIncidentsList] = React.useState<Incident[]>([]);
+  const [incidentsCount, setIncidentsCount] = React.useState(0);
+  const [isLoading, setIsLoading] = React.useState(false);
+
+  const fetchIncidentsCall = async () => {
+    try {
+      setIsLoading(true);
+      const opts: GetIncidentsOpts = {
+        states,
+        alertSources,
+      };
+      if (paging) {
+        opts.maxResults = tableState.pageSize;
+        opts.startIndex = tableState.page * tableState.pageSize;
+      }
+      const data = await ilertApi.fetchIncidents(opts);
+      setIncidentsList(data || []);
+      setIsLoading(false);
+    } catch (e) {
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      setIsLoading(false);
+      throw e;
+    }
+  };
+
+  const fetchIncidentsCountCall = async () => {
+    try {
+      const count = await ilertApi.fetchIncidentsCount({ states });
+      setIncidentsCount(count || 0);
+    } catch (e) {
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  };
+  const fetchIncidents = useAsyncRetry(fetchIncidentsCall, [
+    tableState,
+    states,
+  ]);
+
+  const refetchIncidents = () => {
+    setTableState({ ...tableState, page: 0 });
+    Promise.all([fetchIncidentsCall(), fetchIncidentsCountCall()]);
+  };
+
+  const fetchIncidentsCount = useAsyncRetry(fetchIncidentsCountCall, [states]);
+
+  const error = fetchIncidents.error || fetchIncidentsCount.error;
+  const retry = () => {
+    fetchIncidents.retry();
+    fetchIncidentsCount.retry();
+  };
+
+  const onIncidentChanged = (newIncident: Incident) => {
+    let shouldRefetchIncidents = false;
+    setIncidentsList(
+      incidentsList.reduce((acc: Incident[], incident: Incident) => {
+        if (newIncident.id === incident.id) {
+          if (states.includes(newIncident.status)) {
+            acc.push(newIncident);
+          } else {
+            shouldRefetchIncidents = true;
+          }
+          return acc;
+        }
+        acc.push(incident);
+        return acc;
+      }, []),
+    );
+    if (shouldRefetchIncidents) {
+      refetchIncidents();
+    }
+  };
+
+  const onChangePage = (page: number) => {
+    setTableState({ ...tableState, page });
+  };
+  const onChangeRowsPerPage = (p: number) => {
+    setTableState({ ...tableState, pageSize: p });
+  };
+  const onIncidentStatesChange = (s: IncidentStatus[]) => {
+    setStates(s);
+  };
+
+  return [
+    {
+      tableState,
+      states,
+      incidents: incidentsList,
+      incidentsCount,
+      error,
+      isLoading,
+    },
+    {
+      setTableState,
+      setStates,
+      setIncidentsList,
+      setIsLoading,
+      retry,
+      onIncidentChanged,
+      refetchIncidents,
+      onChangePage,
+      onChangeRowsPerPage,
+      onIncidentStatesChange,
+    },
+  ] as const;
+};
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { ilertApiRef, UnauthorizedError } from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { AlertSource } from '../types';
+
+export const useNewIncident = (
+  open: boolean,
+  initialAlertSource?: AlertSource | null,
+) => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [alertSourcesList, setAlertSourcesList] = React.useState<AlertSource[]>(
+    [],
+  );
+  const [alertSource, setAlertSource] = React.useState<AlertSource | null>(
+    null,
+  );
+  const [summary, setSummary] = React.useState('');
+  const [details, setDetails] = React.useState('');
+  const [isLoading, setIsLoading] = React.useState(false);
+
+  const fetchAlertSources = useAsyncRetry(async () => {
+    try {
+      if (!open || initialAlertSource) {
+        return;
+      }
+      const count = await ilertApi.fetchAlertSources();
+      setAlertSourcesList(count || 0);
+    } catch (e) {
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  }, [open]);
+
+  const error = fetchAlertSources.error;
+  const retry = () => {
+    fetchAlertSources.retry();
+  };
+
+  return [
+    {
+      alertSources: alertSourcesList,
+      alertSource: initialAlertSource ? initialAlertSource : alertSource,
+      summary,
+      details,
+      error,
+      isLoading,
+    },
+    {
+      setAlertSourcesList,
+      setAlertSource,
+      setSummary,
+      setDetails,
+      setIsLoading,
+      retry,
+    },
+  ] as const;
+};
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { ilertApiRef, UnauthorizedError } from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { Schedule } from '../types';
+
+export const useOnCallSchedules = () => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [onCallSchedulesList, setOnCallSchedulesList] = React.useState<
+    Schedule[]
+  >([]);
+  const [isLoading, setIsLoading] = React.useState(false);
+
+  const fetchOnCallSchedulesCall = async () => {
+    try {
+      setIsLoading(true);
+      const data = await ilertApi.fetchOnCallSchedules();
+      setOnCallSchedulesList(data || []);
+      setIsLoading(false);
+    } catch (e) {
+      setIsLoading(false);
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  };
+
+  const { error, retry } = useAsyncRetry(fetchOnCallSchedulesCall, []);
+
+  return [
+    {
+      onCallSchedules: onCallSchedulesList,
+      error,
+      isLoading,
+    },
+    {
+      retry,
+      setIsLoading,
+      refetchOnCallSchedules: fetchOnCallSchedulesCall,
+    },
+  ] as const;
+};
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { ilertApiRef, UnauthorizedError } from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { User, Shift } from '../types';
+
+export const useShiftOverride = (s: Shift, isModalOpened: boolean) => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [shift, setShift] = React.useState<Shift>(s);
+  const [usersList, setUsersList] = React.useState<User[]>([]);
+  const [isLoading, setIsLoading] = React.useState(false);
+
+  const { error, retry } = useAsyncRetry(async () => {
+    try {
+      if (!isModalOpened) {
+        return;
+      }
+      setIsLoading(true);
+      const data = await ilertApi.fetchUsers();
+      setUsersList(data || []);
+      setIsLoading(false);
+    } catch (e) {
+      setIsLoading(false);
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  }, [isModalOpened]);
+
+  const setUser = (user: User) => {
+    setShift({ ...shift, user });
+  };
+
+  const setStart = (start: string) => {
+    setShift({ ...shift, start });
+  };
+
+  const setEnd = (end: string) => {
+    setShift({ ...shift, end });
+  };
+
+  return [
+    {
+      shift,
+      users: usersList,
+      user: shift.user,
+      start: shift.start,
+      end: shift.end,
+      error,
+      isLoading,
+    },
+    {
+      retry,
+      setIsLoading,
+      setUser,
+      setStart,
+      setEnd,
+    },
+  ] as const;
+};
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from 'react';
+import { ilertApiRef, TableState, UnauthorizedError } from '../api';
+import { useApi, errorApiRef } from '@backstage/core';
+import { useAsyncRetry } from 'react-use';
+import { UptimeMonitor } from '../types';
+
+export const useUptimeMonitors = () => {
+  const ilertApi = useApi(ilertApiRef);
+  const errorApi = useApi(errorApiRef);
+
+  const [tableState, setTableState] = React.useState<TableState>({
+    page: 0,
+    pageSize: 10,
+  });
+  const [uptimeMonitorsList, setUptimeMonitorsList] = React.useState<
+    UptimeMonitor[]
+  >([]);
+  const [isLoading, setIsLoading] = React.useState(false);
+
+  const { error, retry } = useAsyncRetry(async () => {
+    try {
+      setIsLoading(true);
+      const data = await ilertApi.fetchUptimeMonitors();
+      setUptimeMonitorsList(data || []);
+      setIsLoading(false);
+    } catch (e) {
+      setIsLoading(false);
+      if (!(e instanceof UnauthorizedError)) {
+        errorApi.post(e);
+      }
+      throw e;
+    }
+  }, [tableState]);
+
+  const onUptimeMonitorChanged = (newUptimeMonitor: UptimeMonitor) => {
+    setUptimeMonitorsList(
+      uptimeMonitorsList.map(
+        (uptimeMonitor: UptimeMonitor): UptimeMonitor => {
+          if (newUptimeMonitor.id === uptimeMonitor.id) {
+            return newUptimeMonitor;
+          }
+
+          return uptimeMonitor;
+        },
+      ),
+    );
+  };
+
+  const onChangePage = (page: number) => {
+    setTableState({ ...tableState, page });
+  };
+  const onChangeRowsPerPage = (pageSize: number) => {
+    setTableState({ ...tableState, pageSize });
+  };
+
+  return [
+    {
+      tableState,
+      uptimeMonitors: uptimeMonitorsList,
+      error,
+      isLoading,
+    },
+    {
+      setTableState,
+      setUptimeMonitorsList,
+      retry,
+      onUptimeMonitorChanged,
+      onChangePage,
+      onChangeRowsPerPage,
+      setIsLoading,
+    },
+  ] as const;
+};
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { IconComponent } from '@backstage/core';
+import ILertIconComponent from './assets/ilert.icon.svg';
+
+export {
+  ilertPlugin,
+  ilertPlugin as plugin,
+  ILertPage,
+  EntityILertCard,
+} from './plugin';
+export {
+  ILertPage as Router,
+  isPluginApplicableToEntity,
+  isPluginApplicableToEntity as isILertAvailable,
+  ILertCard,
+} from './components';
+export * from './api';
+export * from './route-refs';
+export const ILertIcon: IconComponent = ILertIconComponent;
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ilertPlugin } from './plugin';
+
+describe('plugin-ilert', () => {
+  it('should export plugin', () => {
+    expect(ilertPlugin).toBeDefined();
+  });
+});
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {
+  configApiRef,
+  createApiFactory,
+  createPlugin,
+  discoveryApiRef,
+  identityApiRef,
+  createRoutableExtension,
+  createComponentExtension,
+} from '@backstage/core';
+import { ILertClient, ilertApiRef } from './api';
+import { iLertRouteRef } from './route-refs';
+
+export const ilertPlugin = createPlugin({
+  id: 'ilert',
+  apis: [
+    createApiFactory({
+      api: ilertApiRef,
+      deps: {
+        discoveryApi: discoveryApiRef,
+        identityApi: identityApiRef,
+        configApi: configApiRef,
+      },
+      factory: ({ discoveryApi, configApi }) =>
+        ILertClient.fromConfig(configApi, discoveryApi),
+    }),
+  ],
+  routes: {
+    root: iLertRouteRef,
+  },
+});
+
+export const ILertPage = ilertPlugin.provide(
+  createRoutableExtension({
+    component: () => import('./components').then(m => m.ILertPage),
+    mountPoint: iLertRouteRef,
+  }),
+);
+
+export const EntityILertCard = ilertPlugin.provide(
+  createComponentExtension({
+    component: {
+      lazy: () => import('./components/ILertCard').then(m => m.ILertCard),
+    },
+  }),
+);
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { createRouteRef } from '@backstage/core';
+import ILertIcon from './assets/ilert.icon.svg';
+
+export const iLertRouteRef = createRouteRef({
+  icon: ILertIcon,
+  path: '/ilert',
+  title: 'iLert',
+});
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '@testing-library/jest-dom';
+import 'cross-fetch/polyfill';
@@ -0,0 +1,312 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export interface Incident {
+  id: number;
+  summary: string;
+  details: string;
+  reportTime: string;
+  resolvedOn: string;
+  status: IncidentStatus;
+  priority: IncidentPriority;
+  incidentKey: string;
+  alertSource: AlertSource | null;
+  assignedTo: User | null;
+  logEntries: LogEntry[];
+  links: Link[];
+  images: Image[];
+  subscribers: Subscriber[];
+  commentText: string;
+  commentPublishToSubscribers: boolean;
+}
+
+export const PENDING = 'PENDING';
+export const ACCEPTED = 'ACCEPTED';
+export const RESOLVED = 'RESOLVED';
+export type IncidentStatus = typeof PENDING | typeof ACCEPTED | typeof RESOLVED;
+export type IncidentPriority = 'HIGH' | 'LOW';
+
+export interface Link {
+  href: string;
+  text: string;
+}
+
+export interface Image {
+  src: string;
+  href: string;
+  alt: string;
+}
+
+export type SubscriberType = 'TEAM' | 'USER';
+
+export interface Subscriber {
+  id: number;
+  name: string;
+  type: SubscriberType;
+}
+
+export interface LogEntry {
+  id: number;
+  timestamp: string;
+  logEntryType: string;
+  text: string;
+  incidentId?: number;
+  iconName?: string;
+  iconClass?: string;
+  filterTypes?: string[];
+}
+
+export interface User {
+  id: number;
+  username: string;
+  firstName: string;
+  lastName: string;
+  email: string;
+  mobile: Phone;
+  landline: Phone;
+  timezone?: string;
+  language?: Language;
+  role?: UserRole;
+  notificationPreferences?: any[];
+  position: string;
+  department: string;
+}
+
+export type UserRole =
+  | 'USER'
+  | 'ADMIN'
+  | 'STAKEHOLDER'
+  | 'ACCOUNT_OWNER'
+  | 'RESPONDER';
+export type Language = 'de' | 'en';
+export interface Phone {
+  regionCode: string;
+  number: string;
+}
+
+export interface AlertSource {
+  id: number;
+  name: string;
+  status: AlertSourceStatus;
+  escalationPolicy: EscalationPolicy;
+  integrationType: AlertSourceIntegrationType;
+  integrationKey?: string;
+  iconUrl?: string;
+  lightIconUrl?: string;
+  darkIconUrl?: string;
+  incidentCreation?: AlertSourceIncidentCreation;
+  incidentPriorityRule?: AlertSourceIncidentPriorityRule;
+  emailFiltered?: boolean;
+  emailResolveFiltered?: boolean;
+  active?: boolean;
+  emailPredicates?: AlertSourceEmailPredicate[];
+  emailResolvePredicates?: AlertSourceEmailPredicate[];
+  filterOperator?: AlertSourceFilterOperator;
+  resolveFilterOperator?: AlertSourceFilterOperator;
+  supportHours?: AlertSourceSupportHours;
+  heartbeat?: AlertSourceHeartbeat;
+  autotaskMetadata?: AlertSourceAutotaskMetadata;
+  autoResolutionTimeout?: string;
+  teams: TeamShort[];
+}
+
+export interface TeamShort {
+  id: number;
+  name: string;
+}
+
+export interface TeamMember {
+  user: User;
+  role: 'STAKEHOLDER' | 'RESPONDER' | 'USER' | 'ADMIN';
+}
+
+export type AlertSourceStatus =
+  | 'PENDING'
+  | 'ALL_ACCEPTED'
+  | 'ALL_RESOLVED'
+  | 'IN_MAINTENANCE'
+  | 'DISABLED';
+export type AlertSourceIntegrationType =
+  | 'NAGIOS'
+  | 'ICINGA'
+  | 'EMAIL'
+  | 'SMS'
+  | 'API'
+  | 'CRN'
+  | 'HEARTBEAT'
+  | 'PRTG'
+  | 'PINGDOM'
+  | 'CLOUDWATCH'
+  | 'AWSPHD'
+  | 'STACKDRIVER'
+  | 'INSTANA'
+  | 'ZABBIX'
+  | 'SOLARWINDS'
+  | 'PROMETHEUS'
+  | 'NEWRELIC'
+  | 'GRAFANA'
+  | 'GITHUB'
+  | 'DATADOG'
+  | 'UPTIMEROBOT'
+  | 'APPDYNAMICS'
+  | 'DYNATRACE'
+  | 'TOPDESK'
+  | 'STATUSCAKE'
+  | 'MONITOR'
+  | 'TOOL'
+  | 'CHECKMK'
+  | 'AUTOTASK'
+  | 'AWSBUDGET'
+  | 'KENTIXAM'
+  | 'CONSUL'
+  | 'ZAMMAD'
+  | 'SIGNALFX'
+  | 'SPLUNK'
+  | 'KUBERNETES'
+  | 'SEMATEXT'
+  | 'SENTRY'
+  | 'SUMOLOGIC'
+  | 'RAYGUN'
+  | 'MXTOOLBOX'
+  | 'ESWATCHER'
+  | 'AMAZONSNS'
+  | 'KAPACITOR'
+  | 'CORTEXXSOAR'
+  | string;
+export type AlertSourceIncidentCreation =
+  | 'ONE_INCIDENT_PER_EMAIL'
+  | 'ONE_INCIDENT_PER_EMAIL_SUBJECT'
+  | 'ONE_PENDING_INCIDENT_ALLOWED'
+  | 'ONE_OPEN_INCIDENT_ALLOWED'
+  | 'OPEN_RESOLVE_ON_EXTRACTION';
+export type AlertSourceFilterOperator = 'AND' | 'OR';
+export type AlertSourceIncidentPriorityRule =
+  | 'HIGH'
+  | 'LOW'
+  | 'HIGH_DURING_SUPPORT_HOURS'
+  | 'LOW_DURING_SUPPORT_HOURS';
+export interface AlertSourceEmailPredicate {
+  field: 'EMAIL_FROM' | 'EMAIL_SUBJECT' | 'EMAIL_BODY';
+  criteria:
+    | 'CONTAINS_ANY_WORDS'
+    | 'CONTAINS_NOT_WORDS'
+    | 'CONTAINS_STRING'
+    | 'CONTAINS_NOT_STRING'
+    | 'IS_STRING'
+    | 'IS_NOT_STRING'
+    | 'MATCHES_REGEX'
+    | 'MATCHES_NOT_REGEX';
+  value: string;
+}
+export type AlertSourceTimeZone =
+  | 'Europe/Berlin'
+  | 'America/New_York'
+  | 'America/Los_Angeles'
+  | 'Asia/Istanbul';
+export interface AlertSourceSupportDay {
+  start: string;
+  end: string;
+}
+export interface AlertSourceSupportHours {
+  timezone: AlertSourceTimeZone;
+  autoRaiseIncidents: boolean;
+  supportDays: {
+    MONDAY: AlertSourceSupportDay;
+    TUESDAY: AlertSourceSupportDay;
+    WEDNESDAY: AlertSourceSupportDay;
+    THURSDAY: AlertSourceSupportDay;
+    FRIDAY: AlertSourceSupportDay;
+    SATURDAY: AlertSourceSupportDay;
+    SUNDAY: AlertSourceSupportDay;
+  };
+}
+export interface AlertSourceHeartbeat {
+  summary: string;
+  intervalSec: number;
+  status: 'OVERDUE' | 'ON_TIME' | 'NEVER_RECEIVED';
+}
+
+export interface AlertSourceAutotaskMetadata {
+  userName: string;
+  secret: string;
+  apiIntegrationCode: string;
+  webServer: string;
+}
+
+export interface EscalationPolicy {
+  id: number;
+  name: string;
+  escalationRules: EscalationRule[];
+  newEscalationRule: EscalationRule;
+  repeating?: boolean;
+  frequency?: number;
+  teams: TeamShort[];
+}
+
+export interface EscalationRule {
+  user: User | null;
+  schedule: Schedule | null;
+  escalationTimeout: number;
+}
+
+export interface Schedule {
+  id: number;
+  name: string;
+  timezone: string;
+  startsOn: string;
+  currentShift: Shift;
+  nextShift: Shift;
+  shifts: Shift[];
+  overrides: Shift[];
+  teams: TeamShort[];
+}
+
+export interface Shift {
+  user: User;
+  start: string;
+  end: string;
+}
+
+export interface UptimeMonitor {
+  id: number;
+  name: string;
+  region: 'EU' | 'US';
+  checkType: 'http' | 'tcp' | 'udp' | 'ping';
+  checkParams: UptimeMonitorCheckParams;
+  intervalSec: number;
+  timeoutMs: number;
+  createIncidentAfterFailedChecks: number;
+  paused: boolean;
+  embedUrl: string;
+  shareUrl: string;
+  status: string;
+  lastStatusChange: string;
+  escalationPolicy: EscalationPolicy;
+  teams: TeamShort[];
+}
+
+export interface UptimeMonitorCheckParams {
+  host?: string;
+  port?: number;
+  url?: string;
+}
+
+export interface IncidentResponder {
+  group: 'SUGGESTED' | 'USER' | 'ESCALATION_POLICY' | 'ON_CALL_SCHEDULE';
+  id: number;
+  name: string;
+  disabled: boolean;
+}