| // 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.httpd; |
| |
| import com.google.gerrit.lifecycle.LifecycleListener; |
| import com.google.gwtorm.jdbc.SimpleDataSource; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.Singleton; |
| |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.sql.SQLException; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import javax.naming.InitialContext; |
| import javax.naming.NamingException; |
| import javax.sql.DataSource; |
| |
| /** Provides access to the {@code ReviewDb} DataSource. */ |
| @Singleton |
| final class ReviewDbDataSourceProvider implements Provider<DataSource>, |
| LifecycleListener { |
| private DataSource ds; |
| |
| @Override |
| public synchronized DataSource get() { |
| if (ds == null) { |
| ds = open(); |
| } |
| return ds; |
| } |
| |
| @Override |
| public void start() { |
| } |
| |
| @Override |
| public synchronized void stop() { |
| if (ds != null) { |
| closeDataSource(ds); |
| } |
| } |
| |
| private DataSource open() { |
| final String dsName = "java:comp/env/jdbc/ReviewDb"; |
| try { |
| return (DataSource) new InitialContext().lookup(dsName); |
| } catch (NamingException namingErr) { |
| final Properties p = readGerritDataSource(); |
| if (p == null) { |
| throw new ProvisionException("Initialization error:\n" |
| + " * No DataSource " + dsName + "\n" |
| + " * No -DGerritServer=GerritServer.properties" |
| + " on Java command line", namingErr); |
| } |
| |
| try { |
| return new SimpleDataSource(p); |
| } catch (SQLException se) { |
| throw new ProvisionException("Database unavailable", se); |
| } |
| } |
| } |
| |
| private static Properties readGerritDataSource() throws ProvisionException { |
| final Properties srvprop = new Properties(); |
| String name = System.getProperty("GerritServer"); |
| if (name == null) { |
| name = "GerritServer.properties"; |
| } |
| try { |
| final InputStream in = new FileInputStream(name); |
| try { |
| srvprop.load(in); |
| } finally { |
| in.close(); |
| } |
| } catch (IOException e) { |
| throw new ProvisionException("Cannot read " + name, e); |
| } |
| |
| final Properties dbprop = new Properties(); |
| for (final Map.Entry<Object, Object> e : srvprop.entrySet()) { |
| final String key = (String) e.getKey(); |
| if (key.startsWith("database.")) { |
| dbprop.put(key.substring("database.".length()), e.getValue()); |
| } |
| } |
| return dbprop; |
| } |
| |
| private void closeDataSource(final DataSource ds) { |
| try { |
| Class<?> type = Class.forName("org.apache.commons.dbcp.BasicDataSource"); |
| if (type.isInstance(ds)) { |
| type.getMethod("close").invoke(ds); |
| return; |
| } |
| } catch (Throwable bad) { |
| // Oh well, its not a Commons DBCP pooled connection. |
| } |
| |
| try { |
| Class<?> type = Class.forName("com.mchange.v2.c3p0.DataSources"); |
| if (type.isInstance(ds)) { |
| type.getMethod("destroy", DataSource.class).invoke(null, ds); |
| return; |
| } |
| } catch (Throwable bad) { |
| // Oh well, its not a c3p0 pooled connection. |
| } |
| } |
| } |