blob: 2be4f24eba6c587f5e1a710d50bd968df0f95d09 [file] [log] [blame]
// Copyright (C) 2009 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.util;
import com.google.gerrit.lifecycle.LifecycleListener;
import com.google.gerrit.server.config.ConfigUtil;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.config.SitePaths;
import com.google.gwtorm.jdbc.SimpleDataSource;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.ProvisionException;
import com.google.inject.Singleton;
import org.apache.commons.dbcp.BasicDataSource;
import org.eclipse.jgit.lib.Config;
import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
/** Provides access to the DataSource. */
@Singleton
public final class DataSourceProvider implements Provider<DataSource>,
LifecycleListener {
private final DataSource ds;
@Inject
DataSourceProvider(final SitePaths site,
@GerritServerConfig final Config cfg, Context ctx) {
ds = open(site, cfg, ctx);
}
@Override
public synchronized DataSource get() {
return ds;
}
@Override
public void start() {
}
@Override
public synchronized void stop() {
if (ds instanceof BasicDataSource) {
try {
((BasicDataSource) ds).close();
} catch (SQLException e) {
// Ignore the close failure.
}
}
}
public static enum Context {
SINGLE_USER, MULTI_USER;
}
public static enum Type {
DEFAULT, JDBC, POSTGRES, POSTGRESQL, H2, MYSQL;
}
private DataSource open(final SitePaths site, final Config cfg,
final Context context) {
Type type = ConfigUtil.getEnum(cfg, "database", null, "type", Type.DEFAULT);
String driver = optional(cfg, "driver");
String url = optional(cfg, "url");
String username = optional(cfg, "username");
String password = optional(cfg, "password");
String hostname = optional(cfg, "hostname");
String port = optional(cfg, "port");
if (hostname == null) {
hostname = "localhost";
}
if (Type.DEFAULT == type && (driver == null || driver.isEmpty())) {
if (url != null && url.isEmpty()) {
if (url.startsWith("jdbc:postgresql:")) {
type = Type.POSTGRES;
} else if (url.startsWith("postgresql:")) {
url = "jdbc:" + url;
type = Type.POSTGRES;
} else if (url.startsWith("postgres:")) {
url = "jdbc:postgresql:" + url.substring(url.indexOf(':') + 1);
type = Type.POSTGRES;
} else if (url.startsWith("jdbc:h2:")) {
type = Type.H2;
} else if (url.startsWith("h2:")) {
url = "jdbc:" + url;
type = Type.H2;
} else if (url.startsWith("jdbc:mysql:")) {
type = Type.MYSQL;
} else if (url.startsWith("mysql:")) {
url = "jdbc:" + url;
type = Type.MYSQL;
}
} else if (url == null || url.isEmpty()) {
type = Type.H2;
}
}
switch (type) {
case POSTGRES:
case POSTGRESQL: {
final String pfx = "jdbc:postgresql://";
driver = "org.postgresql.Driver";
if (url == null) {
final StringBuilder b = new StringBuilder();
b.append(pfx);
b.append(hostname);
if (port != null && !port.isEmpty()) {
b.append(":");
b.append(port);
}
b.append("/");
b.append(required(cfg, "database"));
url = b.toString();
}
if (url == null || !url.startsWith(pfx)) {
throw new IllegalArgumentException("database.url must be " + pfx
+ " and not " + url);
}
break;
}
case H2: {
final String pfx = "jdbc:h2:";
driver = "org.h2.Driver";
if (url == null) {
String database = optional(cfg, "database");
if (database == null || database.isEmpty()) {
database = "db/ReviewDB";
}
File db = site.resolve(database);
try {
db = db.getCanonicalFile();
} catch (IOException e) {
db = db.getAbsoluteFile();
}
url = pfx + db.toURI().toString();
}
if (url == null || !url.startsWith(pfx)) {
throw new IllegalArgumentException("database.url must be " + pfx
+ " and not " + url);
}
break;
}
case MYSQL: {
final String pfx = "jdbc:mysql://";
driver = "com.mysql.jdbc.Driver";
if (url == null) {
final StringBuilder b = new StringBuilder();
b.append(pfx);
b.append(hostname);
if (port != null && !port.isEmpty()) {
b.append(":");
b.append(port);
}
b.append("/");
b.append(required(cfg, "database"));
url = b.toString();
}
if (url == null || !url.startsWith(pfx)) {
throw new IllegalArgumentException("database.url must be " + pfx
+ " and not " + url);
}
break;
}
case DEFAULT:
case JDBC:
default:
driver = required(cfg, "driver");
url = required(cfg, "url");
if (!url.startsWith("jdbc:")) {
throw new IllegalArgumentException("database.url must be jdbc: style");
}
break;
}
boolean usePool;
if (url.startsWith("jdbc:mysql:")) {
// MySQL has given us trouble with the connection pool,
// sometimes the backend disconnects and the pool winds
// up with a stale connection. Fortunately opening up
// a new MySQL connection is usually very fast.
//
usePool = false;
} else {
usePool = true;
}
usePool = cfg.getBoolean("database", "connectionpool", usePool);
if (context == Context.SINGLE_USER) {
usePool = false;
}
if (usePool) {
final BasicDataSource ds = new BasicDataSource();
ds.setDriverClassName(driver);
ds.setUrl(url);
if (username != null && !username.isEmpty()) {
ds.setUsername(username);
}
if (password != null && !password.isEmpty()) {
ds.setPassword(password);
}
ds.setMaxActive(cfg.getInt("database", "poollimit", 8));
ds.setMinIdle(cfg.getInt("database", "poolminidle", 4));
ds.setMaxIdle(cfg.getInt("database", "poolmaxidle", 4));
ds.setMaxWait(cfg.getInt("database", "poolmaxwait", 30000));
ds.setInitialSize(ds.getMinIdle());
return ds;
} else {
// Don't use the connection pool.
//
try {
final Properties p = new Properties();
p.setProperty("driver", driver);
p.setProperty("url", url);
if (username != null) {
p.setProperty("user", username);
}
if (password != null) {
p.setProperty("password", password);
}
return new SimpleDataSource(p);
} catch (SQLException se) {
throw new ProvisionException("Database unavailable", se);
}
}
}
private static String optional(final Config config, final String name) {
return config.getString("database", null, name);
}
private static String required(final Config config, final String name) {
final String v = optional(config, name);
if (v == null || "".equals(v)) {
throw new IllegalArgumentException("No database." + name + " configured");
}
return v;
}
}