add gitub actions builds

.github/workflows/build.yml

@@ -0,0 +1,87 @@
+# https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions
+name: Build
+
+on:
+  push:
+    branches:     # build all branches
+    - '**'
+    tags-ignore:  # but don't build tags
+    - '**'
+    paths-ignore:
+    - '**/*.md'
+    - '.github/*.yml'
+  pull_request:
+  workflow_dispatch:
+    # https://github.blog/changelog/2020-07-06-github-actions-manual-triggers-with-workflow_dispatch/
+    inputs:
+      additional_maven_args:
+        description: 'Additional Maven Args'
+        required: false
+        default: ''
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Git Checkout
+      uses: actions/checkout@v3 #https://github.com/actions/checkout
+
+    - name: Set up JDK 11
+      uses: actions/setup-java@v3 # https://github.com/actions/setup-java
+      with:
+        distribution: 'temurin'
+        java-version: 11
+
+    - name: Install xvfb
+      run: sudo apt-get install -o Acquire::Retries=3 --no-install-recommends -y xvfb
+
+    - name: "Cache: Local Maven Repository"
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.m2/repository
+          !~/.m2/**/*SNAPSHOT*
+        key: ${{ runner.os }}-mvnrepo-${{ hashFiles('**/pom.xml') }}-${{ hashFiles('**/target-platforms/target-platform-latest.target/target-platform-latest.target') }}
+        restore-keys: |
+          ${{ runner.os }}-mvnrepo-
+
+    - name: Set up Maven
+      uses: stCarolas/setup-maven@v4.4
+      with:
+        maven-version: 3.8.5
+
+
+    - name: Build with Maven
+      id: maven-build
+      run: |
+        set -eu
+
+        MAVEN_OPTS="${MAVEN_OPTS:-}"
+        MAVEN_OPTS="$MAVEN_OPTS -XX:+TieredCompilation -XX:TieredStopAtLevel=1" # https://zeroturnaround.com/rebellabs/your-maven-build-is-slow-speed-it-up/
+        MAVEN_OPTS="$MAVEN_OPTS -Djava.security.egd=file:/dev/./urandom" # https://stackoverflow.com/questions/58991966/what-java-security-egd-option-is-for/59097932#59097932
+        MAVEN_OPTS="$MAVEN_OPTS -Dorg.slf4j.simpleLogger.showDateTime=true -Dorg.slf4j.simpleLogger.dateTimeFormat=HH:mm:ss,SSS" # https://stackoverflow.com/questions/5120470/how-to-time-the-different-stages-of-maven-execution/49494561#49494561
+        MAVEN_OPTS="$MAVEN_OPTS -Xmx1024m -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dhttps.protocols=TLSv1.2"
+        echo "  -> MAVEN_OPTS: $MAVEN_OPTS"
+        export MAVEN_OPTS
+
+        # prevent "org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed]"
+        xvfb-run mvn \
+          --errors \
+          --update-snapshots \
+          --batch-mode \
+          --show-version \
+          --no-transfer-progress \
+          ${{ github.event.inputs.additional_maven_args }} \
+          clean verify
+
+    - name: "Delete intermediate build artifacts"
+      uses: geekyeggo/delete-artifact@1-glob-support # https://github.com/GeekyEggo/delete-artifact/
+      with:
+        name: "*"
+        useGlob: true
+        failOnError: false

.github/workflows/licensecheck.yml

@@ -0,0 +1,35 @@
+# This workflow will build a Java project with Maven
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+
+name: License check
+
+on:
+  push:
+    branches: 
+      - '*'
+  pull_request:
+    branches: 
+     - '*'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up JDK 18
+      uses: actions/setup-java@v3
+      with:
+        java-version: '18'
+        distribution: 'adopt'
+    - name: Cache local Maven repository
+      uses: actions/cache@v3
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+    - name: License check
+      run: | 
+        mvn -U -V -e -B -ntp org.eclipse.dash:license-tool-plugin:license-check --file pom.xml -Ddash.fail=true

README.md

@@ -1,5 +1,6 @@
 # Eclipse LSP4E - Language Server Protocol client for Eclipse IDE
 
+[![Build Status](https://github.com/eclipse/lsp4e/actions/workflows/build.yml/badge.svg)](https://github.com/eclipse/lsp4e/actions/workflows/build.yml)
 [![License](https://img.shields.io/github/license/eclipse/lsp4e.svg?color=blue)](LICENSE)
 
 [![Clone to Eclipse IDE](https://mickaelistria.github.io/redirctToEclipseIDECloneCommand/cloneToEclipseBadge.png)](https://mickaelistria.github.io/redirctToEclipseIDECloneCommand/redirect.html)