Drop JDK 12-based CI

See gh-18848

Author: dreis2211

ci/images/get-jdk-url.sh

@@ -8,9 +8,6 @@ case "$1" in
 	java11)
 		 echo "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.5%2B10/OpenJDK11U-jdk_x64_linux_hotspot_11.0.5_10.tar.gz"
 	;;
-	java12)
-		 echo "https://github.com/AdoptOpenJDK/openjdk12-binaries/releases/download/jdk-12.0.2%2B10/OpenJDK12U-jdk_x64_linux_hotspot_12.0.2_10.tar.gz"
-	;;
 	*)
 		echo $"Unknown java version"
 		exit 1

ci/images/spring-boot-jdk12-ci-image/Dockerfile

@@ -85,14 +85,6 @@ resources:
     username: ((docker-hub-username))
     password: ((docker-hub-password))
     tag: ((branch))
-- name: spring-boot-jdk12-ci-image
-  type: docker-image
-  icon: docker
-  source:
-    repository: ((docker-hub-organization))/spring-boot-jdk12-ci-image
-    username: ((docker-hub-username))
-    password: ((docker-hub-password))
-    tag: ((branch))
 - name: artifactory-repo
   type: artifactory-resource
   icon: package-variant
@@ -117,14 +109,6 @@ resources:
     access_token: ((github-ci-status-token))
     branch: ((branch))
     context: jdk11-build
-- name: repo-status-jdk12-build
-  type: github-status-resource
-  icon: eye-check-outline
-  source:
-    repository: ((github-repo-name))
-    access_token: ((github-ci-status-token))
-    branch: ((branch))
-    context: jdk12-build
 - name: slack-alert
   type: slack-notification
   icon: slack
@@ -153,10 +137,6 @@ jobs:
       params:
         build: ci-images-git-repo/ci/images
         dockerfile: ci-images-git-repo/ci/images/spring-boot-jdk11-ci-image/Dockerfile
-    - put: spring-boot-jdk12-ci-image
-      params:
-        build: ci-images-git-repo/ci/images
-        dockerfile: ci-images-git-repo/ci/images/spring-boot-jdk12-ci-image/Dockerfile
 - name: detect-jdk-updates
   plan:
   - get: git-repo
@@ -182,15 +162,6 @@ jobs:
         GITHUB_USERNAME: ((github-username))
         JDK_VERSION: java11
       image: spring-boot-ci-image
-    - task: detect-jdk12-update
-      file: git-repo/ci/tasks/detect-jdk-updates.yml
-      params:
-        GITHUB_REPO: spring-boot
-        GITHUB_ORGANIZATION: spring-projects
-        GITHUB_PASSWORD: ((github-password))
-        GITHUB_USERNAME: ((github-username))
-        JDK_VERSION: java12
-      image: spring-boot-ci-image
 - name: build
   serial: true
   public: true
@@ -347,52 +318,6 @@ jobs:
       silent: true
       icon_emoji: ":concourse:"
       username: concourse-ci
-- name: jdk12-build
-  serial: true
-  public: true
-  plan:
-    - get: spring-boot-jdk12-ci-image
-    - get: git-repo
-      trigger: true
-    - put: repo-status-jdk12-build
-      params: { state: "pending", commit: "git-repo" }
-    - do:
-        - task: build-project
-          privileged: true
-          timeout: ((task-timeout))
-          image: spring-boot-jdk12-ci-image
-          file: git-repo/ci/tasks/build-project.yml
-        - in_parallel:
-            - task: build-samples
-              timeout: ((task-timeout))
-              image: spring-boot-jdk12-ci-image
-              file: git-repo/ci/tasks/build-samples.yml
-            - task: build-integration-tests
-              timeout: ((task-timeout))
-              image: spring-boot-jdk12-ci-image
-              file: git-repo/ci/tasks/build-integration-tests.yml
-            - task: build-deployment-tests
-              timeout: ((task-timeout))
-              image: spring-boot-jdk12-ci-image
-              file: git-repo/ci/tasks/build-deployment-tests.yml
-      on_failure:
-        do:
-          - put: repo-status-jdk12-build
-            params: { state: "failure", commit: "git-repo" }
-          - put: slack-alert
-            params:
-              text: ":concourse-failed: <https://ci.spring.io/teams/${BUILD_TEAM_NAME}/pipelines/${BUILD_PIPELINE_NAME}/jobs/${BUILD_JOB_NAME}/builds/${BUILD_NAME}|${BUILD_PIPELINE_NAME} ${BUILD_JOB_NAME} failed!>"
-              silent: true
-              icon_emoji: ":concourse:"
-              username: concourse-ci
-    - put: repo-status-jdk12-build
-      params: { state: "success", commit: "git-repo" }
-    - put: slack-alert
-      params:
-        text: ":concourse-succeeded: <https://ci.spring.io/teams/${BUILD_TEAM_NAME}/pipelines/${BUILD_PIPELINE_NAME}/jobs/${BUILD_JOB_NAME}/builds/${BUILD_NAME}|${BUILD_PIPELINE_NAME} ${BUILD_JOB_NAME} was successful!>"
-        silent: true
-        icon_emoji: ":concourse:"
-        username: concourse-ci
 - name: windows-build
   serial: true
   plan:
@@ -595,7 +520,7 @@ jobs:
       body: generated-release-notes/release-notes.md
 groups:
 - name: "Build"
-  jobs: ["build", "jdk11-build", "jdk12-build", "windows-build"]
+  jobs: ["build", "jdk11-build", "windows-build"]
 - name: "Release"
   jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "sync-to-maven-central"]
 - name: "CI Images"

ci/pipeline.yml

@@ -9,10 +9,6 @@ case "$JDK_VERSION" in
 		 BASE_URL="https://api.adoptopenjdk.net/v2/info/releases/openjdk11"
 		 ISSUE_TITLE="Upgrade Java 11 version in CI image"
 	;;
-	java12)
-		 BASE_URL="https://api.adoptopenjdk.net/v2/info/releases/openjdk12"
-		 ISSUE_TITLE="Upgrade Java 12 version in CI image"
-	;;
 	*)
 		echo $"Unknown java version"
 		exit 1;