ci: configure the protected branch 2.1.x (#1126)

* ci: configure the protected branch 2.1.x

* fix(java): java 17 dependency arguments

manual application of googleapis/synthtool#1266

Co-authored-by: BenWhitehead <BenWhitehead@users.noreply.github.com>

.github/workflows/ci.yaml

@@ -1,86 +1,92 @@
-on:
+'on':
   push:
     branches:
-    - main
-  pull_request:
+      - 2.1.x
+  pull_request: null
 name: ci
 jobs:
   units:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [8, 11, 17]
+        java:
+          - 8
+          - 11
+          - 17
     steps:
-    - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
-    - uses: actions/setup-java@v2
-      with:
-        distribution: zulu
-        java-version: ${{matrix.java}}
-    - run: java -version
-    - run: .kokoro/build.sh
-      env:
-        JOB_TYPE: test
+      - uses: actions/checkout@v2
+      - uses: stCarolas/setup-maven@v4
+        with:
+          maven-version: 3.8.1
+      - uses: actions/setup-java@v2
+        with:
+          distribution: zulu
+          java-version: ${{matrix.java}}
+      - run: java -version
+      - run: .kokoro/build.sh
+        env:
+          JOB_TYPE: test
   windows:
     runs-on: windows-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
-    - uses: actions/setup-java@v2
-      with:
-        distribution: zulu
-        java-version: 8
-    - run: java -version
-    - run: .kokoro/build.bat
-      env:
-        JOB_TYPE: test
+      - uses: actions/checkout@v2
+      - uses: stCarolas/setup-maven@v4
+        with:
+          maven-version: 3.8.1
+      - uses: actions/setup-java@v2
+        with:
+          distribution: zulu
+          java-version: 8
+      - run: java -version
+      - run: .kokoro/build.bat
+        env:
+          JOB_TYPE: test
   dependencies:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [8, 11, 17]
+        java:
+          - 8
+          - 11
+          - 17
     steps:
-    - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
-    - uses: actions/setup-java@v2
-      with:
-        distribution: zulu
-        java-version: ${{matrix.java}}
-    - run: java -version
-    - run: .kokoro/dependencies.sh
+      - uses: actions/checkout@v2
+      - uses: stCarolas/setup-maven@v4
+        with:
+          maven-version: 3.8.1
+      - uses: actions/setup-java@v2
+        with:
+          distribution: zulu
+          java-version: ${{matrix.java}}
+      - run: java -version
+      - run: .kokoro/dependencies.sh
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
-    - uses: actions/setup-java@v2
-      with:
-        distribution: zulu
-        java-version: 8
-    - run: java -version
-    - run: .kokoro/build.sh
-      env:
-        JOB_TYPE: lint
+      - uses: actions/checkout@v2
+      - uses: stCarolas/setup-maven@v4
+        with:
+          maven-version: 3.8.1
+      - uses: actions/setup-java@v2
+        with:
+          distribution: zulu
+          java-version: 8
+      - run: java -version
+      - run: .kokoro/build.sh
+        env:
+          JOB_TYPE: lint
   clirr:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: stCarolas/setup-maven@v4
-      with:
-        maven-version: 3.8.1
-    - uses: actions/setup-java@v2
-      with:
-        distribution: zulu
-        java-version: 8
-    - run: java -version
-    - run: .kokoro/build.sh
-      env:
-        JOB_TYPE: clirr
+      - uses: actions/checkout@v2
+      - uses: stCarolas/setup-maven@v4
+        with:
+          maven-version: 3.8.1
+      - uses: actions/setup-java@v2
+        with:
+          distribution: zulu
+          java-version: 8
+      - run: java -version
+      - run: .kokoro/build.sh
+        env:
+          JOB_TYPE: clirr

.kokoro/dependencies.sh

@@ -38,15 +38,13 @@ function determineMavenOpts() {
       | sed -E 's/^(1\.[0-9]\.0).*$/\1/g'
   )
 
-  case $javaVersion in
-    "17")
+  if [[ $javaVersion == 17* ]]
+    then
       # MaxPermSize is no longer supported as of jdk 17
       echo -n "-Xmx1024m"
-      ;;
-    *)
+  else
       echo -n "-Xmx1024m -XX:MaxPermSize=128m"
-      ;;
-  esac
+  fi
 }
 
 export MAVEN_OPTS=$(determineMavenOpts)