build: Adding semantic release workflow (#689)

* build: Adding semantic release.

* Using synced secrets.

.github/workflows/publish.yml

@@ -0,0 +1,45 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A workflow that pushes artifacts to Sonatype
+name: Publish build to Sonatype
+
+on:
+  push:
+    tags:
+      - '*'
+  repository_dispatch:
+    types: [publish]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Publish build
+      run: |
+        echo "Creating .gpg key"
+        cat ${{ secrets.SYNCED_GPG_KEY_ARMOR }} > ./release.asc
+        gpg --quiet --output ./release.gpg --dearmor ./release.asc
+
+        echo "Creating build"
+        ./gradlew build publish --warn --stacktrace \
+        -PsonatypeUsername=${{ secrets.SYNCED_SONATYPE_USERNAME }} \
+        -PsonatypePassword=${{ secrets.SYNCED_SONATYPE_PASSWORD }} \
+        -Psigning.keyId=${{ secrets.SYNCED_GPG_KEY_ID }} \
+        -Psigning.password=${{ secrets.SYNCED_GPG_KEY_PASSWORD }} \
+        -Psigning.secretKeyRingFile=./release.gpg

.github/workflows/release.yml

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+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Release
+on:
+  push:
+    branches: [ master ]
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        token: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }}
+    - name: Semantic Release
+      uses: cycjimmy/semantic-release-action@v2
+      with:
+        extra_plugins: |
+          "@semantic-release/commit-analyzer"
+          "@semantic-release/release-notes-generator"
+          "@google/semantic-release-replace-plugin"
+          "@semantic-release/git
+          "@semantic-release/github
+      env:
+        GH_TOKEN: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }}

.releaserc

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+branches:
+  - master
+plugins:
+  - "@semantic-release/commit-analyzer"
+  - "@semantic-release/release-notes-generator"
+  - - "@google/semantic-release-replace-plugin"
+    - replacements:
+        - files:
+            - "./gradle-mvn-push.gradle"
+          from: "version '.*'"
+          to: "version '${nextRelease.version}'"
+
+        - files:
+            - "README.md"
+          from: ":[0-9].[0-9].[0-9]"
+          to: ":${nextRelease.version}"
+  - - "@semantic-release/git"
+    - assets:
+        - "./gradle-mvn-push.gradle"
+        - "*.md"
+  - "@semantic-release/github"
+options:
+  debug: true