| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.qpid.server.store; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.lang.ref.SoftReference; |
| import java.nio.ByteBuffer; |
| import java.sql.Blob; |
| import java.sql.Connection; |
| import java.sql.Driver; |
| import java.sql.DriverManager; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.sql.Types; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.commons.configuration.Configuration; |
| import org.apache.log4j.Logger; |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.AMQStoreException; |
| import org.apache.qpid.framing.AMQShortString; |
| import org.apache.qpid.framing.FieldTable; |
| import org.apache.qpid.server.exchange.Exchange; |
| import org.apache.qpid.server.logging.LogSubject; |
| import org.apache.qpid.server.logging.actors.CurrentActor; |
| import org.apache.qpid.server.logging.messages.ConfigStoreMessages; |
| import org.apache.qpid.server.logging.messages.MessageStoreMessages; |
| import org.apache.qpid.server.logging.messages.TransactionLogMessages; |
| import org.apache.qpid.server.queue.AMQQueue; |
| |
| /** |
| * An implementation of a {@link MessageStore} that uses Apache Derby as the persistance |
| * mechanism. |
| * |
| * TODO extract the SQL statements into a generic JDBC store |
| */ |
| public class DerbyMessageStore implements MessageStore |
| { |
| |
| private static final Logger _logger = Logger.getLogger(DerbyMessageStore.class); |
| |
| public static final String ENVIRONMENT_PATH_PROPERTY = "environment-path"; |
| |
| |
| private static final String SQL_DRIVER_NAME = "org.apache.derby.jdbc.EmbeddedDriver"; |
| |
| private static final String DB_VERSION_TABLE_NAME = "QPID_DB_VERSION"; |
| |
| private static final String EXCHANGE_TABLE_NAME = "QPID_EXCHANGE"; |
| private static final String QUEUE_TABLE_NAME = "QPID_QUEUE"; |
| private static final String BINDINGS_TABLE_NAME = "QPID_BINDINGS"; |
| private static final String QUEUE_ENTRY_TABLE_NAME = "QPID_QUEUE_ENTRY"; |
| |
| private static final String META_DATA_TABLE_NAME = "QPID_META_DATA"; |
| private static final String MESSAGE_CONTENT_TABLE_NAME = "QPID_MESSAGE_CONTENT"; |
| |
| private static final int DB_VERSION = 3; |
| |
| |
| |
| private static Class<Driver> DRIVER_CLASS; |
| |
| private final AtomicLong _messageId = new AtomicLong(0); |
| private AtomicBoolean _closed = new AtomicBoolean(false); |
| |
| private String _connectionURL; |
| |
| private static final String TABLE_EXISTANCE_QUERY = "SELECT 1 FROM SYS.SYSTABLES WHERE TABLENAME = ?"; |
| |
| private static final String CREATE_DB_VERSION_TABLE = "CREATE TABLE "+DB_VERSION_TABLE_NAME+" ( version int not null )"; |
| private static final String INSERT_INTO_DB_VERSION = "INSERT INTO "+DB_VERSION_TABLE_NAME+" ( version ) VALUES ( ? )"; |
| |
| private static final String CREATE_EXCHANGE_TABLE = "CREATE TABLE "+EXCHANGE_TABLE_NAME+" ( name varchar(255) not null, type varchar(255) not null, autodelete SMALLINT not null, PRIMARY KEY ( name ) )"; |
| private static final String CREATE_QUEUE_TABLE = "CREATE TABLE "+QUEUE_TABLE_NAME+" ( name varchar(255) not null, owner varchar(255), exclusive SMALLINT not null, arguments blob, PRIMARY KEY ( name ))"; |
| private static final String CREATE_BINDINGS_TABLE = "CREATE TABLE "+BINDINGS_TABLE_NAME+" ( exchange_name varchar(255) not null, queue_name varchar(255) not null, binding_key varchar(255) not null, arguments blob , PRIMARY KEY ( exchange_name, queue_name, binding_key ) )"; |
| private static final String SELECT_FROM_QUEUE = "SELECT name, owner, exclusive, arguments FROM " + QUEUE_TABLE_NAME; |
| private static final String FIND_QUEUE = "SELECT name, owner FROM " + QUEUE_TABLE_NAME + " WHERE name = ?"; |
| private static final String UPDATE_QUEUE_EXCLUSIVITY = "UPDATE " + QUEUE_TABLE_NAME + " SET exclusive = ? WHERE name = ?"; |
| private static final String SELECT_FROM_EXCHANGE = "SELECT name, type, autodelete FROM " + EXCHANGE_TABLE_NAME; |
| private static final String SELECT_FROM_BINDINGS = |
| "SELECT exchange_name, queue_name, binding_key, arguments FROM " + BINDINGS_TABLE_NAME + " ORDER BY exchange_name"; |
| private static final String FIND_BINDING = |
| "SELECT * FROM " + BINDINGS_TABLE_NAME + " WHERE exchange_name = ? AND queue_name = ? AND binding_key = ? "; |
| private static final String INSERT_INTO_EXCHANGE = "INSERT INTO " + EXCHANGE_TABLE_NAME + " ( name, type, autodelete ) VALUES ( ?, ?, ? )"; |
| private static final String DELETE_FROM_EXCHANGE = "DELETE FROM " + EXCHANGE_TABLE_NAME + " WHERE name = ?"; |
| private static final String FIND_EXCHANGE = "SELECT name FROM " + EXCHANGE_TABLE_NAME + " WHERE name = ?"; |
| private static final String INSERT_INTO_BINDINGS = "INSERT INTO " + BINDINGS_TABLE_NAME + " ( exchange_name, queue_name, binding_key, arguments ) values ( ?, ?, ?, ? )"; |
| private static final String DELETE_FROM_BINDINGS = "DELETE FROM " + BINDINGS_TABLE_NAME + " WHERE exchange_name = ? AND queue_name = ? AND binding_key = ?"; |
| private static final String INSERT_INTO_QUEUE = "INSERT INTO " + QUEUE_TABLE_NAME + " (name, owner, exclusive, arguments) VALUES (?, ?, ?, ?)"; |
| private static final String DELETE_FROM_QUEUE = "DELETE FROM " + QUEUE_TABLE_NAME + " WHERE name = ?"; |
| |
| private static final String CREATE_QUEUE_ENTRY_TABLE = "CREATE TABLE "+QUEUE_ENTRY_TABLE_NAME+" ( queue_name varchar(255) not null, message_id bigint not null, PRIMARY KEY (queue_name, message_id) )"; |
| private static final String INSERT_INTO_QUEUE_ENTRY = "INSERT INTO " + QUEUE_ENTRY_TABLE_NAME + " (queue_name, message_id) values (?,?)"; |
| private static final String DELETE_FROM_QUEUE_ENTRY = "DELETE FROM " + QUEUE_ENTRY_TABLE_NAME + " WHERE queue_name = ? AND message_id =?"; |
| private static final String SELECT_FROM_QUEUE_ENTRY = "SELECT queue_name, message_id FROM " + QUEUE_ENTRY_TABLE_NAME + " ORDER BY queue_name, message_id"; |
| |
| |
| private static final String CREATE_META_DATA_TABLE = "CREATE TABLE "+META_DATA_TABLE_NAME+" ( message_id bigint not null, meta_data blob, PRIMARY KEY ( message_id ) )"; |
| private static final String CREATE_MESSAGE_CONTENT_TABLE = "CREATE TABLE "+MESSAGE_CONTENT_TABLE_NAME+" ( message_id bigint not null, offset int not null, last_byte int not null, content blob , PRIMARY KEY (message_id, offset) )"; |
| |
| private static final String INSERT_INTO_MESSAGE_CONTENT = "INSERT INTO " + MESSAGE_CONTENT_TABLE_NAME + "( message_id, offset, last_byte, content ) values (?, ?, ?, ?)"; |
| private static final String SELECT_FROM_MESSAGE_CONTENT = |
| "SELECT offset, content FROM " + MESSAGE_CONTENT_TABLE_NAME + " WHERE message_id = ? AND last_byte > ? AND offset < ? ORDER BY message_id, offset"; |
| private static final String DELETE_FROM_MESSAGE_CONTENT = "DELETE FROM " + MESSAGE_CONTENT_TABLE_NAME + " WHERE message_id = ?"; |
| |
| private static final String INSERT_INTO_META_DATA = "INSERT INTO " + META_DATA_TABLE_NAME + "( message_id , meta_data ) values (?, ?)";; |
| private static final String SELECT_FROM_META_DATA = |
| "SELECT meta_data FROM " + META_DATA_TABLE_NAME + " WHERE message_id = ?"; |
| private static final String DELETE_FROM_META_DATA = "DELETE FROM " + META_DATA_TABLE_NAME + " WHERE message_id = ?"; |
| private static final String SELECT_ALL_FROM_META_DATA = "SELECT message_id, meta_data FROM " + META_DATA_TABLE_NAME; |
| |
| private static final String DERBY_SINGLE_DB_SHUTDOWN_CODE = "08006"; |
| |
| |
| private LogSubject _logSubject; |
| private boolean _configured; |
| |
| |
| private enum State |
| { |
| INITIAL, |
| CONFIGURING, |
| RECOVERING, |
| STARTED, |
| CLOSING, |
| CLOSED |
| } |
| |
| private State _state = State.INITIAL; |
| |
| |
| public void configureConfigStore(String name, |
| ConfigurationRecoveryHandler recoveryHandler, |
| Configuration storeConfiguration, |
| LogSubject logSubject) throws Exception |
| { |
| stateTransition(State.INITIAL, State.CONFIGURING); |
| _logSubject = logSubject; |
| CurrentActor.get().message(_logSubject, ConfigStoreMessages.CREATED(this.getClass().getName())); |
| |
| if(!_configured) |
| { |
| commonConfiguration(name, storeConfiguration, logSubject); |
| _configured = true; |
| } |
| |
| // this recovers durable exchanges, queues, and bindings |
| recover(recoveryHandler); |
| |
| |
| stateTransition(State.RECOVERING, State.STARTED); |
| |
| } |
| |
| |
| public void configureMessageStore(String name, |
| MessageStoreRecoveryHandler recoveryHandler, |
| Configuration storeConfiguration, |
| LogSubject logSubject) throws Exception |
| { |
| CurrentActor.get().message(_logSubject, MessageStoreMessages.CREATED(this.getClass().getName())); |
| |
| if(!_configured) |
| { |
| |
| _logSubject = logSubject; |
| |
| commonConfiguration(name, storeConfiguration, logSubject); |
| _configured = true; |
| } |
| |
| recoverMessages(recoveryHandler); |
| |
| } |
| |
| |
| |
| public void configureTransactionLog(String name, |
| TransactionLogRecoveryHandler recoveryHandler, |
| Configuration storeConfiguration, |
| LogSubject logSubject) throws Exception |
| { |
| CurrentActor.get().message(_logSubject, TransactionLogMessages.CREATED(this.getClass().getName())); |
| |
| if(!_configured) |
| { |
| |
| _logSubject = logSubject; |
| |
| commonConfiguration(name, storeConfiguration, logSubject); |
| _configured = true; |
| } |
| |
| recoverQueueEntries(recoveryHandler); |
| |
| } |
| |
| |
| |
| private void commonConfiguration(String name, Configuration storeConfiguration, LogSubject logSubject) |
| throws ClassNotFoundException, SQLException |
| { |
| initialiseDriver(); |
| |
| //Update to pick up QPID_WORK and use that as the default location not just derbyDB |
| |
| final String databasePath = storeConfiguration.getString(ENVIRONMENT_PATH_PROPERTY, System.getProperty("QPID_WORK") |
| + File.separator + "derbyDB"); |
| |
| File environmentPath = new File(databasePath); |
| if (!environmentPath.exists()) |
| { |
| if (!environmentPath.mkdirs()) |
| { |
| throw new IllegalArgumentException("Environment path " + environmentPath + " could not be read or created. " |
| + "Ensure the path is correct and that the permissions are correct."); |
| } |
| } |
| |
| CurrentActor.get().message(_logSubject, MessageStoreMessages.STORE_LOCATION(environmentPath.getAbsolutePath())); |
| |
| createOrOpenDatabase(name, databasePath); |
| } |
| |
| private static synchronized void initialiseDriver() throws ClassNotFoundException |
| { |
| if(DRIVER_CLASS == null) |
| { |
| DRIVER_CLASS = (Class<Driver>) Class.forName(SQL_DRIVER_NAME); |
| } |
| } |
| |
| private void createOrOpenDatabase(String name, final String environmentPath) throws SQLException |
| { |
| //FIXME this the _vhost name should not be added here, but derby wont use an empty directory as was possibly just created. |
| _connectionURL = "jdbc:derby:" + environmentPath + "/" + name + ";create=true"; |
| |
| Connection conn = newAutoCommitConnection(); |
| |
| createVersionTable(conn); |
| createExchangeTable(conn); |
| createQueueTable(conn); |
| createBindingsTable(conn); |
| createQueueEntryTable(conn); |
| createMetaDataTable(conn); |
| createMessageContentTable(conn); |
| |
| conn.close(); |
| } |
| |
| |
| |
| private void createVersionTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(DB_VERSION_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_DB_VERSION_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| |
| PreparedStatement pstmt = conn.prepareStatement(INSERT_INTO_DB_VERSION); |
| try |
| { |
| pstmt.setInt(1, DB_VERSION); |
| pstmt.execute(); |
| } |
| finally |
| { |
| pstmt.close(); |
| } |
| } |
| |
| } |
| |
| |
| private void createExchangeTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(EXCHANGE_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_EXCHANGE_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| } |
| |
| private void createQueueTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(QUEUE_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_QUEUE_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| } |
| |
| private void createBindingsTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(BINDINGS_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_BINDINGS_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| |
| } |
| |
| private void createQueueEntryTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(QUEUE_ENTRY_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_QUEUE_ENTRY_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| |
| } |
| |
| private void createMetaDataTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(META_DATA_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_META_DATA_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| |
| } |
| |
| |
| private void createMessageContentTable(final Connection conn) throws SQLException |
| { |
| if(!tableExists(MESSAGE_CONTENT_TABLE_NAME, conn)) |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| stmt.execute(CREATE_MESSAGE_CONTENT_TABLE); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| |
| } |
| |
| |
| |
| private boolean tableExists(final String tableName, final Connection conn) throws SQLException |
| { |
| PreparedStatement stmt = conn.prepareStatement(TABLE_EXISTANCE_QUERY); |
| try |
| { |
| stmt.setString(1, tableName); |
| ResultSet rs = stmt.executeQuery(); |
| try |
| { |
| return rs.next(); |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| |
| } |
| |
| public void recover(ConfigurationRecoveryHandler recoveryHandler) throws AMQException |
| { |
| stateTransition(State.CONFIGURING, State.RECOVERING); |
| |
| CurrentActor.get().message(_logSubject,MessageStoreMessages.RECOVERY_START()); |
| |
| try |
| { |
| ConfigurationRecoveryHandler.QueueRecoveryHandler qrh = recoveryHandler.begin(this); |
| loadQueues(qrh); |
| |
| ConfigurationRecoveryHandler.ExchangeRecoveryHandler erh = qrh.completeQueueRecovery(); |
| List<String> exchanges = loadExchanges(erh); |
| ConfigurationRecoveryHandler.BindingRecoveryHandler brh = erh.completeExchangeRecovery(); |
| recoverBindings(brh, exchanges); |
| brh.completeBindingRecovery(); |
| } |
| catch (SQLException e) |
| { |
| |
| throw new AMQStoreException("Error recovering persistent state: " + e.getMessage(), e); |
| } |
| |
| |
| } |
| |
| private void loadQueues(ConfigurationRecoveryHandler.QueueRecoveryHandler qrh) throws SQLException |
| { |
| Connection conn = newAutoCommitConnection(); |
| try |
| { |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| ResultSet rs = stmt.executeQuery(SELECT_FROM_QUEUE); |
| try |
| { |
| |
| while(rs.next()) |
| { |
| String queueName = rs.getString(1); |
| String owner = rs.getString(2); |
| boolean exclusive = rs.getBoolean(3); |
| Blob argumentsAsBlob = rs.getBlob(4); |
| |
| byte[] dataAsBytes = argumentsAsBlob.getBytes(1,(int) argumentsAsBlob.length()); |
| FieldTable arguments; |
| if(dataAsBytes.length > 0) |
| { |
| |
| try |
| { |
| arguments = new FieldTable(new DataInputStream(new ByteArrayInputStream(dataAsBytes)),dataAsBytes.length); |
| } |
| catch (IOException e) |
| { |
| throw new RuntimeException("IO Exception should not be thrown",e); |
| } |
| } |
| else |
| { |
| arguments = null; |
| } |
| |
| qrh.queue(queueName, owner, exclusive, arguments); |
| |
| } |
| |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| |
| |
| private List<String> loadExchanges(ConfigurationRecoveryHandler.ExchangeRecoveryHandler erh) throws SQLException |
| { |
| |
| List<String> exchanges = new ArrayList<String>(); |
| Connection conn = null; |
| try |
| { |
| conn = newAutoCommitConnection(); |
| |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| ResultSet rs = stmt.executeQuery(SELECT_FROM_EXCHANGE); |
| try |
| { |
| while(rs.next()) |
| { |
| String exchangeName = rs.getString(1); |
| String type = rs.getString(2); |
| boolean autoDelete = rs.getShort(3) != 0; |
| |
| exchanges.add(exchangeName); |
| |
| erh.exchange(exchangeName, type, autoDelete); |
| |
| } |
| return exchanges; |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| if(conn != null) |
| { |
| conn.close(); |
| } |
| } |
| |
| } |
| |
| private void recoverBindings(ConfigurationRecoveryHandler.BindingRecoveryHandler brh, List<String> exchanges) throws SQLException |
| { |
| _logger.info("Recovering bindings..."); |
| |
| Connection conn = null; |
| try |
| { |
| conn = newAutoCommitConnection(); |
| |
| PreparedStatement stmt = conn.prepareStatement(SELECT_FROM_BINDINGS); |
| |
| try |
| { |
| ResultSet rs = stmt.executeQuery(); |
| |
| try |
| { |
| |
| while(rs.next()) |
| { |
| String exchangeName = rs.getString(1); |
| String queueName = rs.getString(2); |
| String bindingKey = rs.getString(3); |
| Blob arguments = rs.getBlob(4); |
| java.nio.ByteBuffer buf; |
| |
| if(arguments != null && arguments.length() != 0) |
| { |
| byte[] argumentBytes = arguments.getBytes(1, (int) arguments.length()); |
| buf = java.nio.ByteBuffer.wrap(argumentBytes); |
| } |
| else |
| { |
| buf = null; |
| } |
| |
| brh.binding(exchangeName, queueName, bindingKey, buf); |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| |
| } |
| finally |
| { |
| if(conn != null) |
| { |
| conn.close(); |
| } |
| } |
| } |
| |
| |
| |
| public void close() throws Exception |
| { |
| CurrentActor.get().message(_logSubject,MessageStoreMessages.CLOSED()); |
| _closed.getAndSet(true); |
| |
| try |
| { |
| Connection conn = DriverManager.getConnection(_connectionURL + ";shutdown=true"); |
| // Shouldn't reach this point - shutdown=true should throw SQLException |
| conn.close(); |
| _logger.error("Unable to shut down the store"); |
| } |
| catch (SQLException e) |
| { |
| if (e.getSQLState().equalsIgnoreCase(DERBY_SINGLE_DB_SHUTDOWN_CODE)) |
| { |
| //expected and represents a clean shutdown of this database only, do nothing. |
| } |
| else |
| { |
| _logger.error("Exception whilst shutting down the store: " + e); |
| } |
| } |
| } |
| |
| public StoredMessage addMessage(StorableMessageMetaData metaData) |
| { |
| if(metaData.isPersistent()) |
| { |
| return new StoredDerbyMessage(_messageId.incrementAndGet(), metaData); |
| } |
| else |
| { |
| return new StoredMemoryMessage(_messageId.incrementAndGet(), metaData); |
| } |
| } |
| |
| public StoredMessage getMessage(long messageNumber) |
| { |
| return null; |
| } |
| |
| public void removeMessage(long messageId) |
| { |
| try |
| { |
| Connection conn = newConnection(); |
| try |
| { |
| PreparedStatement stmt = conn.prepareStatement(DELETE_FROM_META_DATA); |
| try |
| { |
| stmt.setLong(1,messageId); |
| int results = stmt.executeUpdate(); |
| stmt.close(); |
| |
| if (results == 0) |
| { |
| throw new RuntimeException("Message metadata not found for message id " + messageId); |
| } |
| |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Deleted metadata for message " + messageId); |
| } |
| |
| stmt = conn.prepareStatement(DELETE_FROM_MESSAGE_CONTENT); |
| stmt.setLong(1,messageId); |
| results = stmt.executeUpdate(); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| conn.commit(); |
| } |
| catch(SQLException e) |
| { |
| try |
| { |
| conn.rollback(); |
| } |
| catch(SQLException t) |
| { |
| // ignore - we are re-throwing underlying exception |
| } |
| |
| throw e; |
| |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new RuntimeException("Error removing message with id " + messageId + " from database: " + e.getMessage(), e); |
| } |
| |
| } |
| |
| public void createExchange(Exchange exchange) throws AMQStoreException |
| { |
| if (_state != State.RECOVERING) |
| { |
| try |
| { |
| Connection conn = newAutoCommitConnection(); |
| |
| try |
| { |
| |
| |
| PreparedStatement stmt = conn.prepareStatement(FIND_EXCHANGE); |
| try |
| { |
| stmt.setString(1, exchange.getNameShortString().toString()); |
| ResultSet rs = stmt.executeQuery(); |
| try |
| { |
| |
| // If we don't have any data in the result set then we can add this exchange |
| if (!rs.next()) |
| { |
| |
| PreparedStatement insertStmt = conn.prepareStatement(INSERT_INTO_EXCHANGE); |
| try |
| { |
| insertStmt.setString(1, exchange.getName().toString()); |
| insertStmt.setString(2, exchange.getTypeShortString().asString()); |
| insertStmt.setShort(3, exchange.isAutoDelete() ? (short) 1 : (short) 0); |
| insertStmt.execute(); |
| } |
| finally |
| { |
| insertStmt.close(); |
| } |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error writing Exchange with name " + exchange.getNameShortString() + " to database: " + e.getMessage(), e); |
| } |
| } |
| |
| } |
| |
| public void removeExchange(Exchange exchange) throws AMQStoreException |
| { |
| |
| try |
| { |
| Connection conn = newAutoCommitConnection(); |
| try |
| { |
| PreparedStatement stmt = conn.prepareStatement(DELETE_FROM_EXCHANGE); |
| try |
| { |
| stmt.setString(1, exchange.getNameShortString().toString()); |
| int results = stmt.executeUpdate(); |
| stmt.close(); |
| if(results == 0) |
| { |
| throw new AMQStoreException("Exchange " + exchange.getNameShortString() + " not found"); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error deleting Exchange with name " + exchange.getNameShortString() + " from database: " + e.getMessage(), e); |
| } |
| } |
| |
| public void bindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) |
| throws AMQStoreException |
| { |
| if (_state != State.RECOVERING) |
| { |
| try |
| { |
| Connection conn = newAutoCommitConnection(); |
| |
| try |
| { |
| |
| PreparedStatement stmt = conn.prepareStatement(FIND_BINDING); |
| try |
| { |
| stmt.setString(1, exchange.getNameShortString().toString() ); |
| stmt.setString(2, queue.getNameShortString().toString()); |
| stmt.setString(3, routingKey == null ? null : routingKey.toString()); |
| |
| ResultSet rs = stmt.executeQuery(); |
| try |
| { |
| // If this binding is not already in the store then create it. |
| if (!rs.next()) |
| { |
| PreparedStatement insertStmt = conn.prepareStatement(INSERT_INTO_BINDINGS); |
| try |
| { |
| insertStmt.setString(1, exchange.getNameShortString().toString() ); |
| insertStmt.setString(2, queue.getNameShortString().toString()); |
| insertStmt.setString(3, routingKey == null ? null : routingKey.toString()); |
| if(args != null) |
| { |
| /* This would be the Java 6 way of setting a Blob |
| Blob blobArgs = conn.createBlob(); |
| blobArgs.setBytes(0, args.getDataAsBytes()); |
| stmt.setBlob(4, blobArgs); |
| */ |
| byte[] bytes = args.getDataAsBytes(); |
| ByteArrayInputStream bis = new ByteArrayInputStream(bytes); |
| insertStmt.setBinaryStream(4, bis, bytes.length); |
| } |
| else |
| { |
| insertStmt.setNull(4, Types.BLOB); |
| } |
| |
| insertStmt.executeUpdate(); |
| } |
| finally |
| { |
| insertStmt.close(); |
| } |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error writing binding for AMQQueue with name " + queue.getNameShortString() + " to exchange " |
| + exchange.getNameShortString() + " to database: " + e.getMessage(), e); |
| } |
| |
| } |
| |
| |
| } |
| |
| public void unbindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) |
| throws AMQStoreException |
| { |
| Connection conn = null; |
| |
| try |
| { |
| conn = newAutoCommitConnection(); |
| // exchange_name varchar(255) not null, queue_name varchar(255) not null, binding_key varchar(255), arguments blob |
| PreparedStatement stmt = conn.prepareStatement(DELETE_FROM_BINDINGS); |
| stmt.setString(1, exchange.getNameShortString().toString() ); |
| stmt.setString(2, queue.getNameShortString().toString()); |
| stmt.setString(3, routingKey == null ? null : routingKey.toString()); |
| |
| int result = stmt.executeUpdate(); |
| stmt.close(); |
| |
| if(result != 1) |
| { |
| throw new AMQStoreException("Queue binding for queue with name " + queue.getNameShortString() + " to exchange " |
| + exchange.getNameShortString() + " not found"); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error removing binding for AMQQueue with name " + queue.getNameShortString() + " to exchange " |
| + exchange.getNameShortString() + " in database: " + e.getMessage(), e); |
| } |
| finally |
| { |
| if(conn != null) |
| { |
| try |
| { |
| conn.close(); |
| } |
| catch (SQLException e) |
| { |
| _logger.error(e); |
| } |
| } |
| |
| } |
| |
| |
| } |
| |
| public void createQueue(AMQQueue queue) throws AMQStoreException |
| { |
| createQueue(queue, null); |
| } |
| |
| public void createQueue(AMQQueue queue, FieldTable arguments) throws AMQStoreException |
| { |
| _logger.debug("public void createQueue(AMQQueue queue = " + queue + "): called"); |
| |
| if (_state != State.RECOVERING) |
| { |
| try |
| { |
| Connection conn = newAutoCommitConnection(); |
| |
| PreparedStatement stmt = conn.prepareStatement(FIND_QUEUE); |
| try |
| { |
| stmt.setString(1, queue.getNameShortString().toString()); |
| ResultSet rs = stmt.executeQuery(); |
| try |
| { |
| |
| // If we don't have any data in the result set then we can add this queue |
| if (!rs.next()) |
| { |
| PreparedStatement insertStmt = conn.prepareStatement(INSERT_INTO_QUEUE); |
| |
| try |
| { |
| String owner = queue.getOwner() == null ? null : queue.getOwner().toString(); |
| |
| insertStmt.setString(1, queue.getNameShortString().toString()); |
| insertStmt.setString(2, owner); |
| insertStmt.setBoolean(3,queue.isExclusive()); |
| |
| final byte[] underlying; |
| if(arguments != null) |
| { |
| underlying = arguments.getDataAsBytes(); |
| } |
| else |
| { |
| underlying = new byte[0]; |
| } |
| |
| ByteArrayInputStream bis = new ByteArrayInputStream(underlying); |
| insertStmt.setBinaryStream(4,bis,underlying.length); |
| |
| insertStmt.execute(); |
| } |
| finally |
| { |
| insertStmt.close(); |
| } |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| conn.close(); |
| |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error writing AMQQueue with name " + queue.getNameShortString() + " to database: " + e.getMessage(), e); |
| } |
| } |
| } |
| |
| /** |
| * Updates the specified queue in the persistent store, IF it is already present. If the queue |
| * is not present in the store, it will not be added. |
| * |
| * NOTE: Currently only updates the exclusivity. |
| * |
| * @param queue The queue to update the entry for. |
| * @throws AMQStoreException If the operation fails for any reason. |
| */ |
| public void updateQueue(final AMQQueue queue) throws AMQStoreException |
| { |
| if (_state != State.RECOVERING) |
| { |
| try |
| { |
| Connection conn = newAutoCommitConnection(); |
| |
| try |
| { |
| PreparedStatement stmt = conn.prepareStatement(FIND_QUEUE); |
| try |
| { |
| stmt.setString(1, queue.getNameShortString().toString()); |
| |
| ResultSet rs = stmt.executeQuery(); |
| try |
| { |
| if (rs.next()) |
| { |
| PreparedStatement stmt2 = conn.prepareStatement(UPDATE_QUEUE_EXCLUSIVITY); |
| try |
| { |
| stmt2.setBoolean(1,queue.isExclusive()); |
| stmt2.setString(2, queue.getNameShortString().toString()); |
| |
| stmt2.execute(); |
| } |
| finally |
| { |
| stmt2.close(); |
| } |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error updating AMQQueue with name " + queue.getNameShortString() + " to database: " + e.getMessage(), e); |
| } |
| } |
| |
| } |
| |
| /** |
| * Convenience method to create a new Connection configured for TRANSACTION_READ_COMMITED |
| * isolation and with auto-commit transactions enabled. |
| */ |
| private Connection newAutoCommitConnection() throws SQLException |
| { |
| final Connection connection = newConnection(); |
| try |
| { |
| connection.setAutoCommit(true); |
| } |
| catch (SQLException sqlEx) |
| { |
| |
| try |
| { |
| connection.close(); |
| } |
| finally |
| { |
| throw sqlEx; |
| } |
| } |
| |
| return connection; |
| } |
| |
| /** |
| * Convenience method to create a new Connection configured for TRANSACTION_READ_COMMITED |
| * isolation and with auto-commit transactions disabled. |
| */ |
| private Connection newConnection() throws SQLException |
| { |
| final Connection connection = DriverManager.getConnection(_connectionURL); |
| try |
| { |
| connection.setAutoCommit(false); |
| connection.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED); |
| } |
| catch (SQLException sqlEx) |
| { |
| try |
| { |
| connection.close(); |
| } |
| finally |
| { |
| throw sqlEx; |
| } |
| } |
| return connection; |
| } |
| |
| public void removeQueue(final AMQQueue queue) throws AMQStoreException |
| { |
| AMQShortString name = queue.getNameShortString(); |
| _logger.debug("public void removeQueue(AMQShortString name = " + name + "): called"); |
| Connection conn = null; |
| |
| try |
| { |
| conn = newAutoCommitConnection(); |
| PreparedStatement stmt = conn.prepareStatement(DELETE_FROM_QUEUE); |
| stmt.setString(1, name.toString()); |
| int results = stmt.executeUpdate(); |
| stmt.close(); |
| |
| if (results == 0) |
| { |
| throw new AMQStoreException("Queue " + name + " not found"); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error deleting AMQQueue with name " + name + " from database: " + e.getMessage(), e); |
| } |
| finally |
| { |
| if(conn != null) |
| { |
| try |
| { |
| conn.close(); |
| } |
| catch (SQLException e) |
| { |
| _logger.error(e); |
| } |
| } |
| |
| } |
| |
| |
| } |
| |
| public Transaction newTransaction() |
| { |
| return new DerbyTransaction(); |
| } |
| |
| public void enqueueMessage(ConnectionWrapper connWrapper, final TransactionLogResource queue, Long messageId) throws AMQStoreException |
| { |
| String name = queue.getResourceName(); |
| |
| Connection conn = connWrapper.getConnection(); |
| |
| |
| try |
| { |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Enqueuing message " + messageId + " on queue " + name + "[Connection" + conn + "]"); |
| } |
| |
| PreparedStatement stmt = conn.prepareStatement(INSERT_INTO_QUEUE_ENTRY); |
| try |
| { |
| stmt.setString(1,name); |
| stmt.setLong(2,messageId); |
| stmt.executeUpdate(); |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| _logger.error("Failed to enqueue: " + e.getMessage(), e); |
| throw new AMQStoreException("Error writing enqueued message with id " + messageId + " for queue " + name |
| + " to database", e); |
| } |
| |
| } |
| |
| public void dequeueMessage(ConnectionWrapper connWrapper, final TransactionLogResource queue, Long messageId) throws AMQStoreException |
| { |
| String name = queue.getResourceName(); |
| |
| |
| Connection conn = connWrapper.getConnection(); |
| |
| |
| try |
| { |
| PreparedStatement stmt = conn.prepareStatement(DELETE_FROM_QUEUE_ENTRY); |
| try |
| { |
| stmt.setString(1,name); |
| stmt.setLong(2,messageId); |
| int results = stmt.executeUpdate(); |
| |
| |
| |
| if(results != 1) |
| { |
| throw new AMQStoreException("Unable to find message with id " + messageId + " on queue " + name); |
| } |
| |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Dequeuing message " + messageId + " on queue " + name );//+ "[Connection" + conn + "]"); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| _logger.error("Failed to dequeue: " + e.getMessage(), e); |
| throw new AMQStoreException("Error deleting enqueued message with id " + messageId + " for queue " + name |
| + " from database", e); |
| } |
| |
| } |
| |
| private static final class ConnectionWrapper |
| { |
| private final Connection _connection; |
| |
| public ConnectionWrapper(Connection conn) |
| { |
| _connection = conn; |
| } |
| |
| public Connection getConnection() |
| { |
| return _connection; |
| } |
| } |
| |
| |
| public void commitTran(ConnectionWrapper connWrapper) throws AMQStoreException |
| { |
| |
| try |
| { |
| Connection conn = connWrapper.getConnection(); |
| conn.commit(); |
| |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("commit tran completed"); |
| } |
| |
| conn.close(); |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error commit tx: " + e.getMessage(), e); |
| } |
| finally |
| { |
| |
| } |
| } |
| |
| public StoreFuture commitTranAsync(ConnectionWrapper connWrapper) throws AMQStoreException |
| { |
| commitTran(connWrapper); |
| return new StoreFuture() |
| { |
| public boolean isComplete() |
| { |
| return true; |
| } |
| |
| public void waitForCompletion() |
| { |
| |
| } |
| }; |
| |
| } |
| |
| public void abortTran(ConnectionWrapper connWrapper) throws AMQStoreException |
| { |
| if (connWrapper == null) |
| { |
| throw new AMQStoreException("Fatal internal error: transactional context is empty at abortTran"); |
| } |
| |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("abort tran called: " + connWrapper.getConnection()); |
| } |
| |
| try |
| { |
| Connection conn = connWrapper.getConnection(); |
| conn.rollback(); |
| conn.close(); |
| } |
| catch (SQLException e) |
| { |
| throw new AMQStoreException("Error aborting transaction: " + e.getMessage(), e); |
| } |
| |
| } |
| |
| public Long getNewMessageId() |
| { |
| return _messageId.incrementAndGet(); |
| } |
| |
| |
| private void storeMetaData(Connection conn, long messageId, StorableMessageMetaData metaData) |
| throws SQLException |
| { |
| if(_logger.isDebugEnabled()) |
| { |
| _logger.debug("Adding metadata for message " +messageId); |
| } |
| |
| PreparedStatement stmt = conn.prepareStatement(INSERT_INTO_META_DATA); |
| try |
| { |
| stmt.setLong(1,messageId); |
| |
| final int bodySize = 1 + metaData.getStorableSize(); |
| byte[] underlying = new byte[bodySize]; |
| underlying[0] = (byte) metaData.getType().ordinal(); |
| java.nio.ByteBuffer buf = java.nio.ByteBuffer.wrap(underlying); |
| buf.position(1); |
| buf = buf.slice(); |
| |
| metaData.writeToBuffer(0, buf); |
| ByteArrayInputStream bis = new ByteArrayInputStream(underlying); |
| try |
| { |
| stmt.setBinaryStream(2,bis,underlying.length); |
| int result = stmt.executeUpdate(); |
| |
| if(result == 0) |
| { |
| throw new RuntimeException("Unable to add meta data for message " +messageId); |
| } |
| } |
| finally |
| { |
| try |
| { |
| bis.close(); |
| } |
| catch (IOException e) |
| { |
| |
| throw new SQLException(e); |
| } |
| } |
| |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| |
| } |
| |
| |
| |
| |
| private void recoverMessages(MessageStoreRecoveryHandler recoveryHandler) throws SQLException |
| { |
| Connection conn = newAutoCommitConnection(); |
| try |
| { |
| MessageStoreRecoveryHandler.StoredMessageRecoveryHandler messageHandler = recoveryHandler.begin(); |
| |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| ResultSet rs = stmt.executeQuery(SELECT_ALL_FROM_META_DATA); |
| try |
| { |
| |
| long maxId = 0; |
| |
| while(rs.next()) |
| { |
| |
| long messageId = rs.getLong(1); |
| Blob dataAsBlob = rs.getBlob(2); |
| |
| if(messageId > maxId) |
| { |
| maxId = messageId; |
| } |
| |
| byte[] dataAsBytes = dataAsBlob.getBytes(1,(int) dataAsBlob.length()); |
| java.nio.ByteBuffer buf = java.nio.ByteBuffer.wrap(dataAsBytes); |
| buf.position(1); |
| buf = buf.slice(); |
| MessageMetaDataType type = MessageMetaDataType.values()[dataAsBytes[0]]; |
| StorableMessageMetaData metaData = type.getFactory().createMetaData(buf); |
| StoredDerbyMessage message = new StoredDerbyMessage(messageId, metaData, false); |
| messageHandler.message(message); |
| } |
| |
| _messageId.set(maxId); |
| |
| messageHandler.completeMessageRecovery(); |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| |
| |
| |
| private void recoverQueueEntries(TransactionLogRecoveryHandler recoveryHandler) throws SQLException |
| { |
| Connection conn = newAutoCommitConnection(); |
| try |
| { |
| TransactionLogRecoveryHandler.QueueEntryRecoveryHandler queueEntryHandler = recoveryHandler.begin(this); |
| |
| Statement stmt = conn.createStatement(); |
| try |
| { |
| ResultSet rs = stmt.executeQuery(SELECT_FROM_QUEUE_ENTRY); |
| try |
| { |
| while(rs.next()) |
| { |
| |
| String queueName = rs.getString(1); |
| long messageId = rs.getLong(2); |
| queueEntryHandler.queueEntry(queueName,messageId); |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| |
| queueEntryHandler.completeQueueEntryRecovery(); |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| |
| StorableMessageMetaData getMetaData(long messageId) throws SQLException |
| { |
| |
| Connection conn = newAutoCommitConnection(); |
| try |
| { |
| PreparedStatement stmt = conn.prepareStatement(SELECT_FROM_META_DATA); |
| try |
| { |
| stmt.setLong(1,messageId); |
| ResultSet rs = stmt.executeQuery(); |
| try |
| { |
| |
| if(rs.next()) |
| { |
| Blob dataAsBlob = rs.getBlob(1); |
| |
| byte[] dataAsBytes = dataAsBlob.getBytes(1,(int) dataAsBlob.length()); |
| java.nio.ByteBuffer buf = java.nio.ByteBuffer.wrap(dataAsBytes); |
| buf.position(1); |
| buf = buf.slice(); |
| MessageMetaDataType type = MessageMetaDataType.values()[dataAsBytes[0]]; |
| StorableMessageMetaData metaData = type.getFactory().createMetaData(buf); |
| |
| return metaData; |
| } |
| else |
| { |
| throw new RuntimeException("Meta data not found for message with id " + messageId); |
| } |
| } |
| finally |
| { |
| rs.close(); |
| } |
| } |
| finally |
| { |
| stmt.close(); |
| } |
| } |
| finally |
| { |
| conn.close(); |
| } |
| } |
| |
| |
| private void addContent(Connection conn, long messageId, int offset, ByteBuffer src) |
| { |
| if(_logger.isDebugEnabled()) |
| { |
| _logger.debug("Adding content chunk offset " + offset + " for message " +messageId); |
| } |
| |
| try |
| { |
| src = src.slice(); |
| |
| byte[] chunkData = new byte[src.limit()]; |
| src.duplicate().get(chunkData); |
| |
| PreparedStatement stmt = conn.prepareStatement(INSERT_INTO_MESSAGE_CONTENT); |
| stmt.setLong(1,messageId); |
| stmt.setInt(2, offset); |
| stmt.setInt(3, offset+chunkData.length); |
| |
| |
| /* this would be the Java 6 way of doing things |
| Blob dataAsBlob = conn.createBlob(); |
| dataAsBlob.setBytes(1L, chunkData); |
| stmt.setBlob(3, dataAsBlob); |
| */ |
| ByteArrayInputStream bis = new ByteArrayInputStream(chunkData); |
| stmt.setBinaryStream(4, bis, chunkData.length); |
| stmt.executeUpdate(); |
| stmt.close(); |
| } |
| catch (SQLException e) |
| { |
| if(conn != null) |
| { |
| try |
| { |
| conn.close(); |
| } |
| catch (SQLException e1) |
| { |
| |
| } |
| } |
| |
| throw new RuntimeException("Error adding content chunk offset " + offset + " for message " + messageId + ": " + e.getMessage(), e); |
| } |
| |
| } |
| |
| |
| public int getContent(long messageId, int offset, ByteBuffer dst) |
| { |
| Connection conn = null; |
| |
| |
| try |
| { |
| conn = newAutoCommitConnection(); |
| |
| PreparedStatement stmt = conn.prepareStatement(SELECT_FROM_MESSAGE_CONTENT); |
| stmt.setLong(1,messageId); |
| stmt.setInt(2, offset); |
| stmt.setInt(3, offset+dst.remaining()); |
| ResultSet rs = stmt.executeQuery(); |
| |
| int written = 0; |
| |
| while(rs.next()) |
| { |
| int offsetInMessage = rs.getInt(1); |
| Blob dataAsBlob = rs.getBlob(2); |
| |
| final int size = (int) dataAsBlob.length(); |
| byte[] dataAsBytes = dataAsBlob.getBytes(1, size); |
| |
| int posInArray = offset + written - offsetInMessage; |
| int count = size - posInArray; |
| if(count > dst.remaining()) |
| { |
| count = dst.remaining(); |
| } |
| dst.put(dataAsBytes,posInArray,count); |
| written+=count; |
| |
| if(dst.remaining() == 0) |
| { |
| break; |
| } |
| } |
| |
| stmt.close(); |
| conn.close(); |
| return written; |
| |
| } |
| catch (SQLException e) |
| { |
| if(conn != null) |
| { |
| try |
| { |
| conn.close(); |
| } |
| catch (SQLException e1) |
| { |
| |
| } |
| } |
| |
| throw new RuntimeException("Error retrieving content from offset " + offset + " for message " + messageId + ": " + e.getMessage(), e); |
| } |
| |
| |
| |
| } |
| |
| public boolean isPersistent() |
| { |
| return true; |
| } |
| |
| |
| private synchronized void stateTransition(State requiredState, State newState) throws AMQStoreException |
| { |
| if (_state != requiredState) |
| { |
| throw new AMQStoreException("Cannot transition to the state: " + newState + "; need to be in state: " + requiredState |
| + "; currently in state: " + _state); |
| } |
| |
| _state = newState; |
| } |
| |
| |
| private class DerbyTransaction implements Transaction |
| { |
| private final ConnectionWrapper _connWrapper; |
| |
| |
| private DerbyTransaction() |
| { |
| try |
| { |
| _connWrapper = new ConnectionWrapper(newConnection()); |
| } |
| catch (SQLException e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public void enqueueMessage(TransactionLogResource queue, Long messageId) throws AMQStoreException |
| { |
| DerbyMessageStore.this.enqueueMessage(_connWrapper, queue, messageId); |
| } |
| |
| public void dequeueMessage(TransactionLogResource queue, Long messageId) throws AMQStoreException |
| { |
| DerbyMessageStore.this.dequeueMessage(_connWrapper, queue, messageId); |
| |
| } |
| |
| public void commitTran() throws AMQStoreException |
| { |
| DerbyMessageStore.this.commitTran(_connWrapper); |
| } |
| |
| public StoreFuture commitTranAsync() throws AMQStoreException |
| { |
| return DerbyMessageStore.this.commitTranAsync(_connWrapper); |
| } |
| |
| public void abortTran() throws AMQStoreException |
| { |
| DerbyMessageStore.this.abortTran(_connWrapper); |
| } |
| } |
| |
| private class StoredDerbyMessage implements StoredMessage |
| { |
| |
| private final long _messageId; |
| private volatile SoftReference<StorableMessageMetaData> _metaDataRef; |
| private Connection _conn; |
| |
| StoredDerbyMessage(long messageId, StorableMessageMetaData metaData) |
| { |
| this(messageId, metaData, true); |
| } |
| |
| |
| StoredDerbyMessage(long messageId, |
| StorableMessageMetaData metaData, boolean persist) |
| { |
| try |
| { |
| _messageId = messageId; |
| |
| _metaDataRef = new SoftReference<StorableMessageMetaData>(metaData); |
| if(persist) |
| { |
| _conn = newConnection(); |
| storeMetaData(_conn, messageId, metaData); |
| } |
| } |
| catch (SQLException e) |
| { |
| throw new RuntimeException(e); |
| } |
| |
| } |
| |
| public StorableMessageMetaData getMetaData() |
| { |
| StorableMessageMetaData metaData = _metaDataRef.get(); |
| if(metaData == null) |
| { |
| try |
| { |
| metaData = DerbyMessageStore.this.getMetaData(_messageId); |
| } |
| catch (SQLException e) |
| { |
| throw new RuntimeException(e); |
| } |
| _metaDataRef = new SoftReference<StorableMessageMetaData>(metaData); |
| } |
| |
| return metaData; |
| } |
| |
| public long getMessageNumber() |
| { |
| return _messageId; |
| } |
| |
| public void addContent(int offsetInMessage, java.nio.ByteBuffer src) |
| { |
| DerbyMessageStore.this.addContent(_conn, _messageId, offsetInMessage, src); |
| } |
| |
| public int getContent(int offsetInMessage, java.nio.ByteBuffer dst) |
| { |
| return DerbyMessageStore.this.getContent(_messageId, offsetInMessage, dst); |
| } |
| |
| public StoreFuture flushToStore() |
| { |
| try |
| { |
| if(_conn != null) |
| { |
| if(_logger.isDebugEnabled()) |
| { |
| _logger.debug("Flushing message " + _messageId + " to store"); |
| } |
| |
| _conn.commit(); |
| _conn.close(); |
| } |
| } |
| catch (SQLException e) |
| { |
| if(_logger.isDebugEnabled()) |
| { |
| _logger.debug("Error when trying to flush message " + _messageId + " to store: " + e); |
| } |
| throw new RuntimeException(e); |
| } |
| finally |
| { |
| _conn = null; |
| } |
| return IMMEDIATE_FUTURE; |
| } |
| |
| public void remove() |
| { |
| flushToStore(); |
| DerbyMessageStore.this.removeMessage(_messageId); |
| } |
| } |
| |
| |
| } |
