Use date in dependencies cache and refresh daily (#327)

* Use date in dependencies cache and refresh daily

* fail if cache already warm

.github/workflows/unitTests.yaml

@@ -18,16 +18,21 @@ jobs:
       matrix:
         java: [8, 11, 15]
     steps:
+    - name: Get current date
+      id: date
+      run: echo "::set-output name=date::$(date +'%Y-%m-%d' --utc)"
+
     - uses: actions/checkout@v2
+
     - uses: actions/setup-java@v1
       with:
         java-version: ${{ matrix.java }}
+
     - uses: actions/cache@v2
       with:
         path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
+        key: ${{ runner.os }}-maven-${{ steps.date.outputs.date }}
+
     - name: Mvn install # Need this when the directory/pom structure changes
       id: install1
       continue-on-error: true
@@ -39,6 +44,7 @@ jobs:
           --define maven.test.skip=true \
           --define maven.javadoc.skip=true \
           install
+
     - name: Retry install on failure
       id: install2
       if: steps.install1.outcome == 'failure'
@@ -50,6 +56,7 @@ jobs:
           --define maven.test.skip=true \
           --define maven.javadoc.skip=true \
           install
+
     - name: Unit Tests
       id: unitTest1
       continue-on-error: true
@@ -59,12 +66,14 @@ jobs:
           --fail-at-end \
           --threads 1.5C \
           test
+
     - name: Aggregate Report
       run: |
         ./mvnw \
           --batch-mode \
           --define aggregate=true \
           surefire-report:report-only
+
     - name: Archive logs
       if: always()
       continue-on-error: true
@@ -81,16 +90,21 @@ jobs:
     strategy:
       fail-fast: false
     steps:
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%d' --utc)"
+
       - uses: actions/checkout@v2
+
       - uses: actions/setup-java@v1
         with:
           java-version: 11
+
       - uses: actions/cache@v2
         with:
           path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-          restore-keys: |
-            ${{ runner.os }}-maven-
+          key: ${{ runner.os }}-maven-${{ steps.date.outputs.date }}
+
       - name: releaseCheck
         run: |
           ./mvnw \
@@ -101,6 +115,7 @@ jobs:
             -Dcheckstyle.skip \
             clean \
             package
+
       - name: docsCheck
         run: |
           ./mvnw \
@@ -112,6 +127,7 @@ jobs:
             --projects docs \
             clean \
             package
+
       - name: Archive Artifacts
         if: always()
         continue-on-error: true

.github/workflows/purgeCache.yaml → .github/workflows/warmCache.yaml

@@ -1,40 +1,40 @@
-name: Purge Caches
+name: Warm Caches
 on:
   workflow_dispatch:
   schedule:
-    - cron: '6 4 1,15 * *' # 04:06 UTC every 1st and 15th of the month
+    - cron: '1 0 * * *' # 00:01 UTC every day
 
 jobs:
-  purgeCache:
+  warmCache:
     if: github.repository == 'GoogleCloudPlatform/spring-cloud-gcp' # Only run on upstream branch
-    name: Purge Cache
+    name: Warm Cache
     runs-on: ubuntu-20.04
     steps:
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%d' --utc)"
+
       - uses: actions/checkout@v2
 
       - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
           java-version: 11
 
-      - name: Cache SonarCloud packages
-        uses: actions/cache@v2
-        with:
-          path: ~/.sonar/cache
-          key: ${{ runner.os }}-sonar
-          restore-keys: ${{ runner.os }}-sonar
-
       - uses: actions/cache@v2
+        id: loadCache
         with:
           path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-          restore-keys: |
-            ${{ runner.os }}-maven-
+          key: ${{ runner.os }}-maven-${{ steps.date.outputs.date }}
 
-      - name: Purge caches
-        run: |
-          rm -rf ~/.m2 && \
-          rm -rf ~/.sonar/cache
+      - name: Fail if cache already warm
+        if: steps.loadCache.outputs.cache-hit == 'true'
+        run: /bin/false # Do nothing, unsuccessfully.
+
+      - uses: actions/cache@v2
+        with:
+          path: ~/.sonar/cache
+          key: ${{ runner.os }}-sonar-${{ steps.date.outputs.date }}
 
       - name: Mvn install
         id: install1