Impl: github workflow actions

- validate gradle wrapper
- build & verify plugin
- triggers UTs and UI tests
- triggered on push on main branch and pull requests on all branches

Author: fioan89

.github/workflows/build.yml

@@ -0,0 +1,112 @@
+# GitHub Actions Workflow created for testing and preparing the plugin release in following steps:
+# - validate Gradle Wrapper,
+# - run 'test' and 'verifyPlugin' tasks,
+# - run 'buildPlugin' task and prepare artifact for the further tests,
+# - run 'runPluginVerifier' task,
+#
+# Workflow is triggered on push and pull_request events.
+#
+# GitHub Actions reference: https://help.github.com/en/actions
+#
+
+
+name: Coder Gateway Plugin Build
+on:
+  # Trigger the workflow on pushes to only the 'main' branch (this avoids duplicate checks being run e.g. for dependabot pull requests)
+  push:
+    branches: [ main ]
+  # Trigger the workflow on any pull request
+  pull_request:
+
+jobs:
+
+  # Run Gradle Wrapper Validation Action to verify the wrapper's checksum
+  # Run verifyPlugin, IntelliJ Plugin Verifier, and test Gradle tasks
+  # Build plugin and provide the artifact for the next workflow jobs
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.properties.outputs.version }}
+      changelog: ${{ steps.properties.outputs.changelog }}
+    steps:
+
+      # Check out current repository
+      - name: Fetch Sources
+        uses: actions/checkout@v2.4.0
+
+      # Validate wrapper
+      - name: Gradle Wrapper Validation
+        uses: gradle/wrapper-validation-action@v1.0.4
+
+      # Setup Java 11 environment for the next steps
+      - name: Setup Java
+        uses: actions/setup-java@v2
+        with:
+          distribution: zulu
+          java-version: 11
+          cache: gradle
+
+      # Set environment variables
+      - name: Export Properties
+        id: properties
+        shell: bash
+        run: |
+          PROPERTIES="$(./gradlew properties --console=plain -q)"
+          VERSION="$(echo "$PROPERTIES" | grep "^version:" | cut -f2- -d ' ')"
+          NAME="$(echo "$PROPERTIES" | grep "^pluginName:" | cut -f2- -d ' ')"
+          CHANGELOG="$(./gradlew getChangelog --unreleased --no-header --console=plain -q)"
+          CHANGELOG="${CHANGELOG//'%'/'%25'}"
+          CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
+          CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
+          echo "::set-output name=version::$VERSION"
+          echo "::set-output name=name::$NAME"
+          echo "::set-output name=changelog::$CHANGELOG"
+          echo "::set-output name=pluginVerifierHomeDir::~/.pluginVerifier"
+          ./gradlew listProductsReleases # prepare list of IDEs for Plugin Verifier
+      # Run tests
+      - name: Run Tests
+        run: ./gradlew test
+
+      # Collect Tests Result of failed tests
+      - name: Collect Tests Result
+        if: ${{ failure() }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: tests-result
+          path: ${{ github.workspace }}/build/reports/tests
+
+      # Cache Plugin Verifier IDEs
+      - name: Setup Plugin Verifier IDEs Cache
+        uses: actions/cache@v2.1.7
+        with:
+          path: ${{ steps.properties.outputs.pluginVerifierHomeDir }}/ides
+          key: plugin-verifier-${{ hashFiles('build/listProductsReleases.txt') }}
+
+      # Run Verify Plugin task and IntelliJ Plugin Verifier tool
+      - name: Run Plugin Verification tasks
+        run: ./gradlew runPluginVerifier -Pplugin.verifier.home.dir=${{ steps.properties.outputs.pluginVerifierHomeDir }}
+
+      # Collect Plugin Verifier Result
+      - name: Collect Plugin Verifier Result
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: pluginVerifier-result
+          path: ${{ github.workspace }}/build/reports/pluginVerifier
+
+      # Prepare plugin archive content for creating artifact
+      - name: Prepare Plugin Artifact
+        id: artifact
+        shell: bash
+        run: |
+          cd ${{ github.workspace }}/build/distributions
+          FILENAME=`ls *.zip`
+          unzip "$FILENAME" -d content
+          echo "::set-output name=filename::${FILENAME:0:-4}"
+      # Store already-built plugin as an artifact for downloading
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2.2.4
+        with:
+          name: ${{ steps.artifact.outputs.filename }}
+          path: ./build/distributions/content/*/*