Add Nomad Backend plugin

Signed-off-by: josh <josh.timmons@hashicorp.com>

plugins/nomad/package.json

@@ -51,27 +51,5 @@
   },
   "files": [
     "dist"
-  ],
-  "configSchema": {
-    "$schema": "https://backstage.io/schema/config-v1",
-    "title": "@backstage/nomad",
-    "type": "object",
-    "properties": {
-      "nomad": {
-        "type": "object",
-        "properties": {
-          "addr": {
-            "type": "string",
-            "description": "The address of the Nomad API. See: https://developer.hashicorp.com/nomad/api-docs#addressing-and-ports",
-            "visibility": "frontend"
-          },
-          "token": {
-            "type": "string",
-            "description": "The token to call the Nomad API with. See: https://developer.hashicorp.com/nomad/api-docs#authentication",
-            "visibility": "secret"
-          }
-        }
-      }
-    }
-  }
+  ]
 }

plugins/nomad/src/api.ts

@@ -14,8 +14,11 @@
  * limitations under the License.
  */
 
-import { Config } from '@backstage/config';
-import { createApiRef } from '@backstage/core-plugin-api';
+import {
+  DiscoveryApi,
+  FetchApi,
+  createApiRef,
+} from '@backstage/core-plugin-api';
 
 /** @public */
 export const nomadApiRef = createApiRef<NomadApi>({
@@ -81,32 +84,22 @@ export class FetchError extends Error {
 
 /** @public */
 export class NomadHttpApi implements NomadApi {
-  static fromConfig(config: Config) {
-    return new NomadHttpApi(
-      config.getOptionalString('nomad.addr'),
-      config.getOptionalString('nomad.token'),
-    );
+  static new(discoveryApi: DiscoveryApi, fetchApi: FetchApi) {
+    return new NomadHttpApi(discoveryApi, fetchApi);
   }
 
-  constructor(
-    private addr: string = 'http://127.0.0.1:4646',
-    private token?: string,
-  ) {}
+  constructor(private discoveryApi: DiscoveryApi, private fetchApi: FetchApi) {}
 
   // TODO: pagination
   async listAllocations(
     options: ListAllocationsRequest,
   ): Promise<ListAllocationsResponse> {
-    const resp = await fetch(
-      `${this.addr}/v1/allocations?namespace=${encodeURIComponent(
+    const apiUrl = await this.discoveryApi.getBaseUrl('nomad');
+
+    const resp = await this.fetchApi.fetch(
+      `${apiUrl}/v1/allocations?namespace=${encodeURIComponent(
         options.namespace,
       )}&filter=${encodeURIComponent(options.filter)}`,
-      {
-        method: 'GET',
-        headers: {
-          'X-Nomad-Token': this.token || '',
-        },
-      },
     );
     if (!resp.ok) throw await FetchError.forResponse(resp);
 

plugins/nomad/src/components/GroupList/GroupListForEntity.tsx

@@ -44,6 +44,7 @@ export const GroupListForEntity = () => {
       return;
     }
 
+    // Issue call to nomad-backend
     try {
       const resp = await nomadApi.listAllocations({
         namespace,
@@ -58,7 +59,7 @@ export const GroupListForEntity = () => {
   if (response.loading) {
     return <Progress />;
   }
-  if (response.error || !response.value) {
+  if (response.error) {
     return null;
   }
 

plugins/nomad/src/plugin.ts

@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 import {
-  configApiRef,
+  discoveryApiRef,
+  fetchApiRef,
   createApiFactory,
   createPlugin,
   createRoutableExtension,
@@ -33,8 +34,9 @@ export const nomadPlugin = createPlugin({
   apis: [
     createApiFactory({
       api: nomadApiRef,
-      deps: { configApi: configApiRef },
-      factory: ({ configApi }) => NomadHttpApi.fromConfig(configApi),
+      deps: { discoveryApi: discoveryApiRef, fetchApi: fetchApiRef },
+      factory: ({ discoveryApi, fetchApi }) =>
+        NomadHttpApi.new(discoveryApi, fetchApi),
     }),
   ],
   routes: {