refactor(ng-dev): allow for perf workflows to be run for individual workflows

Allow individual workflows to be run, and fan out CI job to multiple jobs via matrix.

Author: josephperrott

.github/workflows/perf.yml

@@ -12,9 +12,11 @@ defaults:
     shell: bash
 
 jobs:
-  workflow-perf:
+  list:
     timeout-minutes: 30
     runs-on: ubuntu-latest
+    outputs:
+      workflows: ${{ steps.workflows.outputs.workflows }}
     steps:
       # Because the checkout and setup node action is contained in the dev-infra repo, we must
       # checkout the repo to be able to run the action we have created.  Other repos will skip
@@ -23,4 +25,22 @@ jobs:
       - uses: ./github-actions/npm/checkout-and-setup-node
       - uses: ./github-actions/bazel/setup
       - run: yarn install --immutable
-      - run: yarn ng-dev perf workflows --json
+      - id: workflows
+        run: echo "workflows=$(yarn ng-dev perf workflows --list)" >> "$GITHUB_OUTPUT"
+
+  workflow:
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    needs: list
+    strategy:
+      matrix:
+        workflow: ${{ fromJSON(needs.list.outputs.workflows) }}
+    steps:
+      # Because the checkout and setup node action is contained in the dev-infra repo, we must
+      # checkout the repo to be able to run the action we have created.  Other repos will skip
+      # this step.
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: ./github-actions/npm/checkout-and-setup-node
+      - uses: ./github-actions/bazel/setup
+      - run: yarn install --immutable
+      - run: yarn ng-dev perf workflows --name ${{ matrix.workflow }}

.ng-dev/dx-perf-workflows.yml

@@ -1,5 +1,6 @@
 workflows:
-  - name: Rerun a test
+  rerun:
+    name: Rerun a test
     prepare:
       - bazel clean;
       - bazel build //ng-dev/utils/test;
@@ -10,7 +11,8 @@ workflows:
     cleanup:
       - git apply -R .ng-dev/perf-tests/test-rerun.diff;
 
-  - name: Build Everything
+  build-everything:
+    name: Build Everything
     prepare:
       - bazel clean;
     workflow:

ng-dev/perf/workflow/cli.ts

@@ -14,7 +14,8 @@ import {determineRepoBaseDirFromCwd} from '../../utils/repo-directory.js';
 
 interface WorkflowsParams {
   configFile: string;
-  json: boolean;
+  list: boolean;
+  name?: string;
 }
 
 /** Builds the checkout pull request command. */
@@ -25,25 +26,38 @@ function builder(yargs: Argv) {
       type: 'string',
       description: 'The path to the workflow definitions in a yml file',
     })
-    .option('json', {
+    .option('list', {
       default: false,
       type: 'boolean',
-      description: 'Whether to output the results as a json object',
-    });
+      description: 'Whether to get back a list of workflows that can be executed'
+    })
+    .option('name', {
+      type: 'string',
+      description: 'A specific workflow to run by name',
+    })
 }
 
 /** Handles the checkout pull request command. */
-async function handler({configFile, json}: WorkflowsParams) {
+async function handler({configFile, list, name}: WorkflowsParams) {
   const workflows = await loadWorkflows(join(determineRepoBaseDirFromCwd(), configFile));
+
+  if (list) {
+    process.stdout.write(JSON.stringify(Object.keys(workflows)));
+    return;
+  }
+
+  if (name) {
+    const {duration} = await measureWorkflow(workflows[name]);
+    process.stdout.write(JSON.stringify({[name]: duration}));
+    return;
+  }
+  
   const results: {[key: string]: number} = {};
-  for (const workflow of workflows) {
+  for (const workflow of Object.values(workflows)) {
     const {name, duration} = await measureWorkflow(workflow);
     results[name] = duration;
   }
-
-  if (json) {
-    process.stdout.write(JSON.stringify(results));
-  }
+  process.stdout.write(JSON.stringify(results)); 
 }
 
 /** yargs command module for checking out a PR. */

ng-dev/perf/workflow/loader.ts

@@ -10,5 +10,5 @@ export interface Workflow {
 
 export async function loadWorkflows(src: string) {
   const rawWorkflows = await readFile(src, {encoding: 'utf-8'});
-  return parse(rawWorkflows).workflows as Workflow[];
+  return parse(rawWorkflows).workflows as {[key: string]: Workflow};
 }