Add support for MariaDB

Add support for MariaDB using MariaDB connector [1].

[1] https://github.com/MariaDB/mariadb-connector-j

Change-Id: I72496f93eb15e24093c8b9d9cda0b225342faa13

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/DatabaseConfigModule.java

@@ -39,6 +39,9 @@ public class DatabaseConfigModule extends AbstractModule {
     bind(DatabaseConfigInitializer.class)
         .annotatedWith(Names.named("jdbc"))
         .to(JDBCInitializer.class);
+    bind(DatabaseConfigInitializer.class)
+        .annotatedWith(Names.named("mariadb"))
+        .to(MariaDbInitializer.class);
     bind(DatabaseConfigInitializer.class)
         .annotatedWith(Names.named("mysql"))
         .to(MySqlInitializer.class);

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/InitDatabase.java

@@ -85,6 +85,8 @@ class InitDatabase implements InitStep {
 
     if (dci instanceof MySqlInitializer) {
       libraries.mysqlDriver.downloadRequired();
+    } else if (dci instanceof MariaDbInitializer) {
+      libraries.mariadbDriver.downloadRequired();
     } else if (dci instanceof OracleInitializer) {
       libraries.oracleDriver.downloadRequired();
     } else if (dci instanceof DB2Initializer) {

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/JDBCInitializer.java

@@ -37,6 +37,8 @@ class JDBCInitializer implements DatabaseConfigInitializer {
         database.set("driver", "org.apache.derby.jdbc.EmbeddedDriver");
       } else if (url.startsWith("jdbc:h2:")) {
         database.set("driver", "org.h2.Driver");
+      } else if (url.startsWith("jdbc:mariadb:")) {
+        database.set("driver", "org.mariadb.jdbc.Driver");
       } else if (url.startsWith("jdbc:mysql:")) {
         database.set("driver", "com.mysql.jdbc.Driver");
       } else if (url.startsWith("jdbc:postgresql:")) {

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/Libraries.java

@@ -43,6 +43,7 @@ class Libraries {
   /* final */ LibraryDownloader db2Driver;
   /* final */ LibraryDownloader db2DriverLicense;
   /* final */ LibraryDownloader hanaDriver;
+  /* final */ LibraryDownloader mariadbDriver;
   /* final */ LibraryDownloader mysqlDriver;
   /* final */ LibraryDownloader oracleDriver;
 

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/MariaDbInitializer.java

@@ -0,0 +1,32 @@
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.pgm.init;
+
+import static com.google.gerrit.pgm.init.api.InitUtil.username;
+
+import com.google.gerrit.pgm.init.api.Section;
+
+class MariaDbInitializer implements DatabaseConfigInitializer {
+
+  @Override
+  public void initConfig(Section databaseSection) {
+    final String defPort = "(mariadb default)";
+    databaseSection.string("Server hostname", "hostname", "localhost");
+    databaseSection.string("Server port", "port", defPort, true);
+    databaseSection.string("Database name", "database", "reviewdb");
+    databaseSection.string("Database username", "username", username());
+    databaseSection.password("username", "password");
+  }
+}

gerrit-pgm/src/main/resources/com/google/gerrit/pgm/init/libraries.config

@@ -18,6 +18,12 @@
   sha1 = b0878056f15616989144d6114d36d3942321d0d1
   remove = mysql-connector-java-.*[.]jar
 
+[library "mariadbDriver"]
+  name = MariaDB Connector/J 1.5.9
+  url = https://repo1.maven.org/maven2/org/mariadb/jdbc/mariadb-java-client/1.5.9/mariadb-java-client-1.5.9.jar
+  sha1 = 75d4d6e4cdb9a551a102e92a14c640768174e214
+  remove = mariadb-java-client-.*[.]jar
+
 [library "oracleDriver"]
   name = Oracle JDBC driver 11g Release 2 (11.2.0)
   url = file:///u01/app/oracle/product/11.2.0/xe/jdbc/lib/ojdbc6.jar