Cache mvn repo in main build (see #1677 ) (#1678)

Cache maven repository to decrease build times (see #1677 )

* Using latest cache action release explicitly (see egor-tensin/cmake-common@eca875b and actions/toolkit#632)

Co-authored-by: Jonas Hecht <jonas.hecht@codecentric.de>

.github/workflows/build-feature.yml

@@ -23,6 +23,18 @@ jobs:
         with:
           java-version: 1.8
 
+      - name: Cache local Maven repository
+        uses: actions/cache@v2.1.4
+        env:
+          cache-name: cache-mvn
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+
       # since we also build on Windows Powershell, we need to add a space between -D maven.javadoc.skip=true
       # otherwise the build will fail https://stackoverflow.com/questions/38051787/maven-javadoc-skip-true-throws-an-error
       - name: Build with Maven

.github/workflows/build-main.yml

@@ -23,6 +23,18 @@ jobs:
         with:
           java-version: 1.8
 
+      - name: Cache local Maven repository
+        uses: actions/cache@v2.1.4
+        env:
+          cache-name: cache-mvn
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+
       # since we also build on Windows Powershell, we need to add a space between -D maven.javadoc.skip=true
       # otherwise the build will fail https://stackoverflow.com/questions/38051787/maven-javadoc-skip-true-throws-an-error
       - name: Build with Maven

.github/workflows/build-pullrequest.yml

@@ -19,6 +19,18 @@ jobs:
         with:
           java-version: 1.8
 
+      - name: Cache local Maven repository
+        uses: actions/cache@v2.1.4
+        env:
+          cache-name: cache-mvn
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+
       # since we also build on Windows Powershell, we need to add a space between -D maven.javadoc.skip=true
       # otherwise the build will fail https://stackoverflow.com/questions/38051787/maven-javadoc-skip-true-throws-an-error
       - name: Build with Maven

.github/workflows/release-to-maven-central.yml

@@ -26,6 +26,18 @@ jobs:
           gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
           gpg-passphrase: MAVEN_GPG_PASSPHRASE
 
+      - name: Cache local Maven repository
+        uses: actions/cache@v2.1.4
+        env:
+          cache-name: cache-mvn
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+
       - name: Set projects Maven version to GitHub Action GUI set version
         run: mvn versions:set "-DnewVersion=${{ github.event.inputs.releaseversion }}" --no-transfer-progress