Add workflow to publish snapshots via GHA

Signed-off-by: Sayali Gaikawad <gaiksaya@amazon.com>

.github/workflows/publish-snapshots.yml

@@ -0,0 +1,30 @@
+name: Publish snapshots to maven
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-publish-snapshots:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          java-version: 11
+          distribution: adopt
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          role-to-assume: ${{ secrets.PUBLISH_SNAPSHOTS_ROLE }}
+          aws-region: us-east-1
+      - name: publish snapshots to maven
+        run: |
+          export SONATYPE_USERNAME=$(aws secretsmanager get-secret-value --secret-id maven-snapshots-username --query SecretString --output text)
+          export SONATYPE_PASSWORD=$(aws secretsmanager get-secret-value --secret-id maven-snapshots-password --query SecretString --output text)
+          ./gradlew --no-daemon publishPublishMavenPublicationToSnapshotRepoRepository

CHANGELOG.md

@@ -6,6 +6,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Github workflow for changelog verification ([#239](https://github.com/opensearch-project/opensearch-java/pull/239))
 - Github workflow for dependabot PRs ([#247](https://github.com/opensearch-project/opensearch-java/pull/247))
 - Add javadoc link for the client ([#255](https://github.com/opensearch-project/opensearch-java/pull/255))
+- Add workflow to publish snapshots via GHA ([#325](https://github.com/opensearch-project/opensearch-java/pull/325))
 ### Dependencies
 - Bumps `classgraph` from 4.8.149 to 4.8.154
 

java-client/build.gradle.kts

@@ -257,8 +257,11 @@ publishing {
     repositories{
         if (version.toString().endsWith("SNAPSHOT")) {
             maven("https://aws.oss.sonatype.org/content/repositories/snapshots/") {
-                name = "snapshotRepo"
-                credentials(PasswordCredentials::class)
+                name = "Snapshots"
+                credentials {
+                    username = System.getenv("SONATYPE_USERNAME")
+                    password = System.getenv("SONATYPE_PASSWORD")
+                }
             }
         }
         maven("${rootProject.buildDir}/repository") {