ci: add release please automation (#1065)

.github/.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+    ".": "9.1.0"
+}

.github/release-please-config.json

@@ -0,0 +1,17 @@
+{
+    "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+    "release-type": "go",
+    "include-component-in-tag": false,
+    "include-v-in-tag": true,
+    "versioning": "always-bump-patch",
+    "packages": {
+        ".": {
+            "version-file": "internal/version/version.go"
+        }
+    },
+    "plugins": [
+        {
+            "type": "sentence-case"
+        }
+    ]
+}

.github/workflows/release-please.yml

@@ -0,0 +1,65 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - '[0-9]*.[0-9]*'
+
+permissions:
+  contents: write
+  issues: write
+  pull-requests: write
+  id-token: write
+
+jobs:
+  release:
+    name: Release Please
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch ephemeral GitHub token
+        id: fetch-token
+        uses: elastic/ci-gh-actions/fetch-github-token@8a7604dfdd4e7fe21f969bfe9ff96e17635ea577 # v1.0.0
+        with:
+          vault-instance: "ci-prod"
+
+      - uses: googleapis/release-please-action@16a9c90856f42705d54a6fda1823352bdc62cf38 # v4.4.0
+        id: release-please
+        with:
+          config-file: .github/release-please-config.json
+          manifest-file: .github/.release-please-manifest.json
+          target-branch: ${{ github.ref_name }}
+          token: ${{ steps.fetch-token.outputs.token }}
+
+      - name: Checkout repository
+        if: steps.release-please.outputs.release_created == 'true'
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        with:
+          token: ${{ steps.fetch-token.outputs.token }}
+
+      - name: Bump Version Snapshot
+        id: bump-version
+        if: steps.release-please.outputs.release_created == 'true'
+        run: |
+          NEXT_PATCH=$((${{ steps.release-please.outputs.patch }} + 1))
+          NEXT_VERSION="${{ steps.release-please.outputs.major }}.${{ steps.release-please.outputs.minor }}.${NEXT_PATCH}-SNAPSHOT"
+          echo "Next version: $NEXT_VERSION"
+          sed -i "s/const Version = \".*\"/const Version = \"$NEXT_VERSION\"/" internal/version/version.go
+          echo "next_version=$NEXT_VERSION" >> $GITHUB_OUTPUT
+
+
+      - name: Create Version Bump Pull Request
+        if: steps.release-please.outputs.release_created == 'true'
+        uses: peter-evans/create-pull-request@84ae59a2cdc2258d6fa0732dd66352dddae2a412 # v7.0.9
+        with:
+          token: ${{ steps.fetch-token.outputs.token }}
+          commit-message: 'chore: bump version to ${{ steps.bump-version.outputs.next_version }}'
+          branch: chore/bump-version-${{ steps.bump-version.outputs.next_version }}
+          delete-branch: true
+          title: 'chore: bump version to ${{ steps.bump-version.outputs.next_version }}'
+          body: |
+            Bumps version to ${{ steps.bump-version.outputs.next_version }} after release ${{ steps.release-please.outputs.major }}.${{ steps.release-please.outputs.minor }}.${{ steps.release-please.outputs.patch }}.
+
+            Auto-generated by GitHub Actions.
+          base: ${{ github.ref_name }}
+          committer: 'Elastic Machine <elasticmachine@users.noreply.github.com>'
+          author: 'Elastic Machine <elasticmachine@users.noreply.github.com>'

internal/version/version.go

@@ -18,4 +18,7 @@
 package version
 
 // Client returns the client version as a string.
-const Client = "9.1.1-SNAPSHOT"
+const Client = Version
+
+// Version is the version of the client.
+const Version = "9.1.1-SNAPSHOT"