Added MySQL-Driver to Plan (Velocity support)

Affects issues:
- Close #739

Plan/build.gradle

@@ -62,6 +62,7 @@ subprojects {
     ext.htmlCompressorVersion = "1.5.2"
     ext.caffeineVersion = "2.7.0"
     ext.h2Version = "1.4.199"
+    ext.mysqlVersion = "8.0.16"
     ext.hikariVersion = "3.3.1"
     ext.slf4jVersion = "1.7.26"
     ext.geoIpVersion = "2.12.0"
@@ -114,7 +115,7 @@ subprojects {
 
         // Testing dependencies required by Plan
         testCompile "org.xerial:sqlite-jdbc:3.28.0"     // SQLite
-        testCompile "mysql:mysql-connector-java:8.0.16" // MySQL
+        testCompile "mysql:mysql-connector-java:$mysqlVersion" // MySQL
     }
     
     configurations {

Plan/common/build.gradle

@@ -8,6 +8,7 @@ dependencies {
     compile "com.googlecode.htmlcompressor:htmlcompressor:$htmlCompressorVersion"
     compile "com.github.ben-manes.caffeine:caffeine:$caffeineVersion"
     compile "com.h2database:h2:$h2Version"
+    compile "mysql:mysql-connector-java:$mysqlVersion"
     compile "com.zaxxer:HikariCP:$hikariVersion"
     compile "org.slf4j:slf4j-nop:$slf4jVersion"
     compile "org.slf4j:slf4j-api:$slf4jVersion"

Plan/common/src/main/java/com/djrapitops/plan/db/MySQLDB.java

@@ -24,6 +24,7 @@ import com.djrapitops.plan.system.locale.Locale;
 import com.djrapitops.plan.system.locale.lang.PluginLang;
 import com.djrapitops.plan.system.settings.config.PlanConfig;
 import com.djrapitops.plan.system.settings.paths.DatabaseSettings;
+import com.djrapitops.plugin.api.Check;
 import com.djrapitops.plugin.benchmarking.Timings;
 import com.djrapitops.plugin.logging.L;
 import com.djrapitops.plugin.logging.console.PluginLogger;
@@ -75,12 +76,22 @@ public class MySQLDB extends SQLDB {
         return DBType.MYSQL;
     }
 
+    private void loadMySQLDriver() {
+        try {
+            Class.forName("com.mysql.cj.jdbc.Driver");
+        } catch (ClassNotFoundException e) {
+            errorHandler.log(L.CRITICAL, this.getClass(), e);
+        }
+    }
+
     /**
      * Setups the {@link HikariDataSource}
      */
     @Override
     public void setupDataSource() {
         try {
+            if (Check.isVelocityAvailable()) loadMySQLDriver();
+
             HikariConfig hikariConfig = new HikariConfig();
 
             String host = config.get(DatabaseSettings.MYSQL_HOST);

Plan/plugin/build.gradle

@@ -15,6 +15,8 @@ shadowJar {
     configurations = [project.configurations.compile]
 
     relocate 'dagger', 'plan.dagger'
+    relocate 'com.mysql.jdbc', 'plan.com.mysql.jdbc'
+    relocate 'com.mysql.cj', 'plan.com.mysql.cj'
 
     destinationDir = file("$rootDir/builds/")
     baseName = "Plan"