Added MySQL to Github Actions (#1438)

- Uses MariaDB setup from https://firefart.at/post/using-mysql-service-with-github-actions/
- Adds optional MYSQL_PORT env variable to test setup

.github/workflows/gradle.yml

@@ -8,13 +8,37 @@ jobs:
 
     runs-on: ubuntu-latest
 
+    services:
+      mariadb:
+        image: mariadb:latest
+        ports:
+          - 3306
+        env:
+          MYSQL_USER: user
+          MYSQL_PASSWORD: password
+          MYSQL_DATABASE: test
+          MYSQL_ROOT_PASSWORD: password
+        options: --health-cmd="mysqladmin ping" --health-interval=5s --health-timeout=2s --health-retries=3
+
     steps:
     - uses: actions/checkout@v1
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+    - name: Verify MariaDB connection
+      env:
+        PORT: ${{ job.services.mariadb.ports[3306] }}
+      run: |
+        while ! mysqladmin ping -h"127.0.0.1" -P"$PORT" --silent; do
+          sleep 1
+        done
     - name: Build with Gradle
+      env:
+        MYSQL_DB: test
+        MYSQL_USER: user
+        MYSQL_PASS: password
+        MYSQL_PORT: ${{ job.services.mariadb.ports[3306] }}
       run: |
         cd Plan
         ./gradlew build

Plan/common/src/test/java/utilities/CIProperties.java

@@ -28,6 +28,7 @@ public class CIProperties {
     // (To prevent outside connections with CI user)
     public static final String MYSQL_USER = "MYSQL_USER";
     public static final String MYSQL_PASS = "MYSQL_PASS";
+    public static final String MYSQL_PORT = "MYSQL_PORT";
     public static final String CHROME_DRIVER = "CHROMEDRIVER";
 
     private CIProperties() {

Plan/common/src/test/java/utilities/DBPreparer.java

@@ -35,7 +35,7 @@ import java.util.Optional;
 public class DBPreparer {
 
     private final PlanSystem system;
-    private int testPortNumber;
+    private final int testPortNumber;
 
     public DBPreparer(PlanSystem system, int testPortNumber) {
         this.system = system;
@@ -69,6 +69,7 @@ public class DBPreparer {
         String database = System.getenv(CIProperties.MYSQL_DATABASE);
         String user = System.getenv(CIProperties.MYSQL_USER);
         String pass = System.getenv(CIProperties.MYSQL_PASS);
+        String port = System.getenv(CIProperties.MYSQL_PORT);
         if (Verify.containsNull(database, user)) {
             return Optional.empty();
         }
@@ -84,6 +85,7 @@ public class DBPreparer {
         config.set(DatabaseSettings.MYSQL_USER, user);
         config.set(DatabaseSettings.MYSQL_PASS, pass != null ? pass : "");
         config.set(DatabaseSettings.MYSQL_HOST, "127.0.0.1");
+        config.set(DatabaseSettings.MYSQL_PORT, port != null ? port : "3306");
         config.set(DatabaseSettings.TYPE, dbName);
         return Optional.of(formattedDatabase);
     }