infra: fix build and plugin execution

Author: nrmancuso

.circleci/config.yml

@@ -1,54 +1,61 @@
 version: 2
 jobs:
-  build:
+  build-project:
     docker:
-      - image: checkstyle/sonarqube-maven-git:7.7-community-8c1737e
+      - image: cimg/openjdk:11.0.16
 
+    steps:
+      - checkout
+      - run: mvn package -Pno-validations
+      - persist_to_workspace:
+          root: /home/circleci
+          paths:
+            - project
+
+  execute-sonar:
+    docker:
+      - image: sonarqube:9.0-community
     working_directory: ~/repo
 
     environment:
       # Customize the JVM maximum heap limit
       MAVEN_OPTS: -Xmx3200m
 
     steps:
-      - checkout
+      - attach_workspace:
+          at: /root
+      - run:
+          name: Install packages
+          command: apk add maven
+      - run:
+          name: Copy jar
+          command: |
+            cp /root/project/target/checkstyle-sonar-plugin*.jar \
+              /opt/sonarqube/extensions/plugins/
+      - run:
+          name: Start SonarQube web service and execute maven SonarQube build
+          command: |
+            # start SonarQube web server
+            cd /opt/sonarqube/
+            ./bin/run.sh &
+            until grep "SonarQube is up" logs/sonar.log; \
+              do sleep 10 && echo "Waiting for web server to come up..."; \
+              done
 
-      # Download and cache dependencies
-      - restore_cache:
-          keys:
-          - v1-dependencies-sonarqube-{{ checksum "pom.xml" }}
-          # fallback to using the latest cache if no exact match is found
-          - v1-dependencies-sonarqube
+            # Note that we cannot separate "start SonarQube web server" above from
+            # this step, as we would kill web server when step is complete.
+            cd /root/project
+            mvn sonar:sonar -Dsonar.login=admin -Dsonar.password=admin
+      - run:
+          name: Check logs for error
+          command: grep "ERROR" /opt/sonarqube/logs/* || test $? = 1
 
-      - run: mvn package -Pno-validations
-
-      - save_cache:
-          paths:
-            - ~/.m2
-          key: v1-dependencies-sonarqube-{{ checksum "pom.xml" }}
+workflows:
+  version: 2
 
-      # run tests
-      - run: |-
-          pwd
-          POM_VERSION=$(grep "<version>" pom.xml | head -n 1 | sed -E "s/.*<version>//" | sed "s/<.*//")
-          echo "POM_VERSION="$POM_VERSION
-          echo "creation of jar is skipped as it was created on previous step"
-          #mvn package -Pno-validations
-          echo "coping jar to sonarqube ..."
-          cp target/checkstyle-sonar-plugin-$POM_VERSION.jar /opt/sonarqube/extensions/plugins/
-          cd /opt/sonarqube/
-          echo "remove existing logs ..."
-          rm -f logs/*.*
-          echo "run sonarqube web service"
-          ./bin/run.sh &
-          echo "sleeping 60 to let sonar start up ..."
-          sleep 60
-          echo "check that sonar service is up ..."
-          grep "SonarQube is up" logs/sonar.log
-          echo "switching back to repository code"
-          cd -
-          pwd
-          echo "execution of mvn sonar:sonar ..."
-          mvn sonar:sonar
-          echo "grep for ERROR in logs ..."
-          grep "ERROR" /opt/sonarqube/logs/* || test $? = 1
+  build-sonar:
+    jobs:
+      - build-project
+      - execute-sonar:
+          requires:
+            - build-project