download pre-compiled jar in action when available

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@v3
       - name: Run CogniCrypt
-        uses: Timbals/CryptoAnalysis@a4032930f0a7b3bdb761130eae8d2229c9534b0a
+        uses: Timbals/CryptoAnalysis@be1b88d536592c3ab08af5969808d075b8c59d82
         with:
           rulesDir: "$(pwd)/JCA-CrySL-rules"
           appPath: "$(pwd)/CryptoAnalysisTargets/CogniCryptDemoExample/Examples.jar"

action.yml

@@ -60,22 +60,32 @@ runs:
       with:
         path: CryptoAnalysisBuild_98e04be6/CryptoAnalysis.jar
         key: ${{ steps.cache-key.outputs.cache-key }}
-      env:
-        # workaround for https://github.com/actions/runner/issues/2473
-        GH_ACTION_REPOSITORY: ${{ github.action_repository }}
-        GH_ACTION_REF: ${{ github.action_ref }}
 
-    # TODO download pre-compiled jar instead (when available)
     - name: Set up Maven
       if: steps.cache.outputs.cache-hit != 'true'
       uses: stCarolas/[email protected]
       with:
         maven-version: 3.6.3
-    - name: Compile CryptoAnalysis
+
+    # Fetch pre-compiled JAR from the maven repository
+    - name: Download pre-compiled JAR
+      id: download
       if: steps.cache.outputs.cache-hit != 'true'
+      continue-on-error: true
+      shell: bash
+      run: mvn dependency:copy -Dartifact=de.fraunhofer.iem:CryptoAnalysis:${{ env.GH_ACTION_REF }}:jar:jar-with-dependencies -DoutputDirectory=CryptoAnalysis/build
+      working-directory: CryptoAnalysisBuild_98e04be6
+      env:
+        GH_ACTION_REF: ${{ github.action_ref }}
+    # Compile from source when no pre-compiled JAR is available.
+    # This also makes the action work for non-releases,
+    # meaning any ref that can be resolved by https://github.com/actions/checkout.
+    - name: Compile CryptoAnalysis
+      if: steps.cache.outputs.cache-hit != 'true' && steps.download.outcome != 'success'
       shell: bash
       run: mvn package -DskipTests=true
       working-directory: CryptoAnalysisBuild_98e04be6
+
     - name: Copy JAR to convenient path
       if: steps.cache.outputs.cache-hit != 'true'
       shell: bash
@@ -86,10 +96,6 @@ runs:
       with:
         path: CryptoAnalysisBuild_98e04be6/CryptoAnalysis.jar
         key: ${{ steps.cache-key.outputs.cache-key }}
-      env:
-        # workaround for https://github.com/actions/runner/issues/2473
-        GH_ACTION_REPOSITORY: ${{ github.action_repository }}
-        GH_ACTION_REF: ${{ github.action_ref }}
 
     - run: |
         java -cp CryptoAnalysisBuild_98e04be6/CryptoAnalysis.jar crypto.HeadlessCryptoScanner \