chore(ci): move component features check out of merge queue (vectordotdev#17773)

Moves the most costly (both $ and time) status check out of the merge
queue into a fixed schedule.
The workflow can still be run on demand by a PR comment, or from the GHA
UI.

Author: neuronull

.github/workflows/component_features.yml

@@ -1,34 +1,49 @@
+# Component Features - Linux
+#
+# Validates that each component feature compiles
+#
+# Runs on:
+#  - scheduled UTC midnight Tues-Sat
+#  - on PR comment (see comment-trigger.yml)
+#  - on demand from github actions UI
+
 name: Component Features - Linux
 
 on:
   workflow_call:
+  workflow_dispatch:
+  schedule:
+    # At midnight UTC Tue-Sat
+    - cron: '0 0 * * 2-6'
 
 jobs:
   check-component-features:
-    runs-on: [linux, ubuntu-20.04-8core]
+    # use free tier on schedule and 8 core to expedite results on demand invocation
+    runs-on: ${{ github.event_name == 'schedule' && 'ubuntu-latest' || fromJSON('["linux", "ubuntu-20.04-8core"]') }}
+    if: github.event_name == 'issue_comment' || github.event_name == 'workflow_dispatch'
     steps:
       - name: (PR comment) Get PR branch
-        if: ${{ github.event_name == 'issue_comment' }}
+        if: github.event_name == 'issue_comment'
         uses: xt0rted/pull-request-comment-branch@v2
         id: comment-branch
 
       - name: (PR comment) Set latest commit status as pending
+        if: github.event_name == 'issue_comment'
         uses: myrotvorets/[email protected]
-        if: ${{ github.event_name == 'issue_comment' }}
         with:
           sha: ${{ steps.comment-branch.outputs.head_sha }}
           token: ${{ secrets.GITHUB_TOKEN }}
           context: Component Features - Linux
           status: pending
 
       - name: (PR comment) Checkout PR branch
-        if: ${{ github.event_name == 'issue_comment' }}
+        if: github.event_name == 'issue_comment'
         uses: actions/checkout@v3
         with:
           ref: ${{ steps.comment-branch.outputs.head_ref }}
 
       - name: Checkout branch
-        if: ${{ github.event_name != 'issue_comment' }}
+        if: github.event_name != 'issue_comment'
         uses: actions/checkout@v3
 
       - run: sudo -E bash scripts/environment/bootstrap-ubuntu-20.04.sh
@@ -37,8 +52,8 @@ jobs:
       - run: make check-component-features
 
       - name: (PR comment) Set latest commit status as ${{ job.status }}
-        uses: myrotvorets/[email protected]
         if: always() && github.event_name == 'issue_comment'
+        uses: myrotvorets/[email protected]
         with:
           sha: ${{ steps.comment-branch.outputs.head_sha }}
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/master_merge_queue.yml

@@ -74,12 +74,6 @@ jobs:
     needs: changes
     secrets: inherit
 
-  check-component-features:
-    if: needs.changes.outputs.source == 'true'
-    uses: ./.github/workflows/component_features.yml
-    needs: changes
-    secrets: inherit
-
   cross-linux:
     # We run cross checks when dependencies change to ensure they still build.
     # This helps us avoid adopting dependencies that aren't compatible with other architectures.
@@ -117,7 +111,6 @@ jobs:
       - test-misc
       - test-environment
       - check-msrv
-      - check-component-features
       - cross-linux
       - unit-mac
       - unit-windows