impl: isolate sonar build to sdk-platform-java

Author: meltsufin

.github/workflows/sdk-platform-java-sonar.yaml

@@ -47,13 +47,18 @@ jobs:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
           restore-keys: ${{ runner.os }}-m2
-      - name: Install modules to local maven
-        run: |
-          mvn install -T 1C -DskipTests -ntp -B
-          cd java-showcase
-          mvn install -T 1C -DskipTests -ntp -B
+      - name: Install sdk-platform-modules
+        shell: bash
+        run: .kokoro/build.sh
+        env:
+          BUILD_SUBDIR: sdk-platform-java
+          JOB_TYPE: install
+      - name: Install java-showcase
+        shell: bash
+        run: mvn install -T 1C -DskipTests -ntp -B
+        working-directory: sdk-platform-java/java-showcase
       - name: Parse showcase version
-        working-directory: java-showcase/gapic-showcase
+        working-directory: sdk-platform-java/java-showcase/gapic-showcase
         run: echo "SHOWCASE_VERSION=$(mvn help:evaluate -Dexpression=gapic-showcase.version -q -DforceStdout)" >> "$GITHUB_ENV"
       - name: Install showcase server
         run: |
@@ -69,6 +74,7 @@ jobs:
       # step for a few tests (env var tests) may be overkill and should be better covered
       # when we can upgrade to JUnit 5 (https://github.com/googleapis/sdk-platform-java/issues/1611#issuecomment-1970079325)
       - name: Build and analyze for full test coverage
+        working-directory: sdk-platform-java
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN_FOR_GENERATOR }}
@@ -80,8 +86,8 @@ jobs:
               -Dsonar.projectKey=googleapis_google-cloud-java_generator \
               -Dsonar.organization=googleapis \
               -Dsonar.host.url=https://sonarcloud.io
-              -Dsonar.projectBaseDir=sdk-platform-java
       - name: Build and analyze Showcase Integration Tests Coverage
+        working-directory: sdk-platform-java
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN_FOR_SHOWCASE }}
@@ -95,4 +101,3 @@ jobs:
               -Dsonar.organization=googleapis \
               -Dsonar.host.url=https://sonarcloud.io \
               -Dsonar.projectName=googleapis_google-cloud-java_showcase
-              -Dsonar.projectBaseDir=sdk-platform-java