Add examples for github:actions:dispatch scaffolder actions

Signed-off-by: npiyush97 <npiyush35@gmail.com>

.changeset/silly-emus-remain.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend': patch
+---
+
+Add examples for `github:actions:dispatch` scaffolder actions.

plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubActionsDispatch.examples.test.ts

@@ -0,0 +1,134 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * 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 {
+  ScmIntegrations,
+  DefaultGithubCredentialsProvider,
+  GithubCredentialsProvider,
+} from '@backstage/integration';
+import { ConfigReader } from '@backstage/config';
+import { getVoidLogger } from '@backstage/backend-common';
+import { TemplateAction } from '@backstage/plugin-scaffolder-node';
+import { PassThrough } from 'stream';
+import { createGithubActionsDispatchAction } from './githubActionsDispatch';
+import yaml from 'yaml';
+import { examples } from './githubActionsDispatch.examples';
+
+const mockOctokit = {
+  rest: {
+    actions: {
+      createWorkflowDispatch: jest.fn(),
+    },
+  },
+};
+jest.mock('octokit', () => ({
+  Octokit: class {
+    constructor() {
+      return mockOctokit;
+    }
+  },
+}));
+
+describe('github:actions:dispatch', () => {
+  const config = new ConfigReader({
+    integrations: {
+      github: [
+        { host: 'github.com', token: 'tokenlols' },
+        { host: 'ghe.github.com' },
+      ],
+    },
+  });
+
+  const integrations = ScmIntegrations.fromConfig(config);
+  let githubCredentialsProvider: GithubCredentialsProvider;
+  let action: TemplateAction<any>;
+
+  const mockContext = {
+    input: {
+      repoUrl: 'github.com?repo=repo&owner=owner',
+      workflowId: 'a-workflow-id',
+      branchOrTagName: 'main',
+    },
+    workspacePath: 'lol',
+    logger: getVoidLogger(),
+    logStream: new PassThrough(),
+    output: jest.fn(),
+    createTemporaryDirectory: jest.fn(),
+  };
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+    githubCredentialsProvider =
+      DefaultGithubCredentialsProvider.fromIntegrations(integrations);
+    action = createGithubActionsDispatchAction({
+      integrations,
+      githubCredentialsProvider,
+    });
+  });
+
+  it('should call the githubApis for creating WorkflowDispatch without an input object', async () => {
+    mockOctokit.rest.actions.createWorkflowDispatch.mockResolvedValue({
+      data: {
+        foo: 'bar',
+      },
+    });
+
+    const repoUrl = 'github.com?repo=repo&owner=owner';
+    const workflowId = 'dispatch_workflow';
+    const branchOrTagName = 'main';
+    const ctx = Object.assign({}, mockContext, {
+      input: { repoUrl, workflowId, branchOrTagName },
+    });
+    await action.handler(ctx);
+    console.log(ctx);
+
+    expect(
+      mockOctokit.rest.actions.createWorkflowDispatch,
+    ).toHaveBeenCalledWith({
+      owner: 'owner',
+      repo: 'repo',
+      workflow_id: workflowId,
+      ref: branchOrTagName,
+    });
+  });
+
+  it('should call the githubApis for creating WorkflowDispatch with an input object', async () => {
+    mockOctokit.rest.actions.createWorkflowDispatch.mockResolvedValue({
+      data: {
+        foo: 'bar',
+      },
+    });
+
+    const repoUrl = 'github.com?repo=repo&owner=owner';
+    const workflowId = 'dispatch_workflow';
+    const branchOrTagName = 'main';
+    const workflowInputs = yaml.parse(examples[1].example).steps[0].input
+      .workflowInputs;
+    const ctx = Object.assign({}, mockContext, {
+      input: { repoUrl, workflowId, branchOrTagName, workflowInputs },
+    });
+    await action.handler(ctx);
+    expect(
+      mockOctokit.rest.actions.createWorkflowDispatch,
+    ).toHaveBeenCalledWith({
+      owner: 'owner',
+      repo: 'repo',
+      workflow_id: workflowId,
+      ref: branchOrTagName,
+      inputs: workflowInputs,
+    });
+  });
+});

plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubActionsDispatch.examples.ts

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * 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 { TemplateExample } from '@backstage/plugin-scaffolder-node';
+import yaml from 'yaml';
+
+export const examples: TemplateExample[] = [
+  {
+    description: 'GitHub Action Workflow Without Inputs.',
+    example: yaml.stringify({
+      steps: [
+        {
+          action: 'github:actions:dispatch',
+          name: 'Dispatch Github Action Workflow',
+          input: {
+            repoUrl: 'github.com?repo=repo&owner=owner',
+            workflowId: 'WORKFLOW_ID',
+            branchOrTagName: 'main',
+          },
+        },
+      ],
+    }),
+  },
+  {
+    description: 'GitHub Action Workflow With Inputs',
+    example: yaml.stringify({
+      steps: [
+        {
+          action: 'github:actions:dispatch',
+          name: 'Dispatch Github Action Workflow with inputs',
+          input: {
+            repoUrl: 'github.com?repo=repo&owner=owner',
+            workflowId: 'WORKFLOW_ID',
+            branchOrTagName: 'main',
+            workflowInputs: {
+              input1: 'value1',
+              input2: 'value2',
+            },
+          },
+        },
+      ],
+    }),
+  },
+  {
+    description: 'GitHub Action Workflow With Custom Token',
+    example: yaml.stringify({
+      steps: [
+        {
+          action: 'github:actions:dispatch',
+          name: 'Dispatch GitHub Action Workflow (custom token)',
+          input: {
+            repoUrl: 'github.com?repo=reponame&owner=owner',
+            workflowId: 'WORKFLOW_ID',
+            branchOrTagName: 'release-1.0',
+            token: '${{ secrets.MY_CUSTOM_TOKEN }}',
+          },
+        },
+      ],
+    }),
+  },
+];

plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubActionsDispatch.ts

@@ -23,6 +23,7 @@ import { createTemplateAction } from '@backstage/plugin-scaffolder-node';
 import { Octokit } from 'octokit';
 import { parseRepoUrl } from '../publish/util';
 import { getOctokitOptions } from './helpers';
+import { examples } from './githubActionsDispatch.examples';
 
 /**
  * Creates a new action that dispatches a GitHub Action workflow for a given branch or tag.
@@ -44,6 +45,7 @@ export function createGithubActionsDispatchAction(options: {
     id: 'github:actions:dispatch',
     description:
       'Dispatches a GitHub Action workflow for a given branch or tag',
+    examples,
     schema: {
       input: {
         type: 'object',
@@ -119,3 +121,5 @@ export function createGithubActionsDispatchAction(options: {
     },
   });
 }
+
+export { examples };