[Backport 2.x] Adds release workflows to onboard to new release process (#321)

.github/workflows/release-drafter.yml

@@ -0,0 +1,28 @@
+name: Release drafter
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  draft-a-release:
+    name: Draft a release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+      - name: Build with Gradle
+        run: |
+          ./gradlew --no-daemon publishPublishMavenPublicationToLocalRepoRepository && tar -C build -cvf artifacts.tar.gz repository
+      - name: Draft a release
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          generate_release_notes: true
+          files: |
+            artifacts.tar.gz

CHANGELOG.md

@@ -8,6 +8,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Add Github workflow for dependabot PRs ([#247](https://github.com/opensearch-project/opensearch-java/pull/247))
 - Add support for signing service name in AwsSdk2Transport ([#324](https://github.com/opensearch-project/opensearch-java/pull/324))
 - Add new OpenSearchTransport based on Apache HttpClient 5 ([#328](https://github.com/opensearch-project/opensearch-java/pull/328))
+- Add 1-click release workflows ([#321](https://github.com/opensearch-project/opensearch-java/pull/321))
 
 ### Dependencies
 - Bumps `grgit-gradle` from 4.0.1 to 5.0.0

RELEASING.md

@@ -34,9 +34,5 @@ Repositories create consistent release labels, such as `v1.0.0`, `v1.1.0` and `v
 The release process is standard across repositories in this org and is run by a release manager volunteering from amongst [MAINTAINERS](MAINTAINERS.md).
 
 1. Create a tag, e.g. `v2.1.0`, and push it to the GitHub repo.
-2. The [opensearch-java-maven-sign-and-release/](https://build.ci.opensearch.org/job/opensearch-java-maven-sign-and-release/) will be automatically kicked off.
-3. Login to [AWS OSS Sonatype](https://aws.oss.sonatype.org/#stagingRepositories), and locate the staged release.
-4. `Close` the staged repository, and ensure all checks pass.
-5. `Release` the staged respository.
-6. [Create a release on GitHub](https://github.com/opensearch-project/opensearch-java/releases/new) with release notes.
-7. Increment `systemProp.version` in [gradle.properties](gradle.properties) to the next patch release, e.g. `v2.1.1`, commit and push. 
+2. This creates a draft release which triggers the [opensearch-java-maven-sign-and-release/](https://build.ci.opensearch.org/job/opensearch-java-maven-sign-and-release/) jenkins workflow. The artifacts will be automcatically signed and published to maven.
+3. Increment `systemProp.version` in [gradle.properties](gradle.properties) to the next patch release, e.g. `v2.1.1`, commit and push. 

jenkins/release.jenkinsFile

@@ -0,0 +1,16 @@
+lib = library(identifier: '[email protected]', retriever: modernSCM([
+    $class: 'GitSCMSource',
+    remote: 'https://github.com/opensearch-project/opensearch-build-libraries.git',
+]))
+
+standardReleasePipelineWithGenericTrigger(
+    tokenIdCredential: 'jenkins-opensearch-java-generic-webhook-token',
+    causeString: 'A tag was cut on opensearch-project/opensearch-java repository causing this workflow to run',
+    downloadReleaseAsset: true,
+    publishRelease: true) {
+        publishToMaven(
+            signingArtifactsPath: "$WORKSPACE/repository/",
+            mavenArtifactsPath: "$WORKSPACE/repository/",
+            autoPublish: true
+        )
+    }