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JDBC Type 4 driver for MySQL
/*
* Copyright (c) 2015, 2020, Oracle and/or its affiliates.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.protocol;
import java.lang.ref.WeakReference;
import java.util.LinkedList;
import java.util.concurrent.CopyOnWriteArrayList;
import com.mysql.cj.MessageBuilder;
import com.mysql.cj.Messages;
import com.mysql.cj.Session;
import com.mysql.cj.TransactionEventHandler;
import com.mysql.cj.conf.PropertyKey;
import com.mysql.cj.conf.PropertySet;
import com.mysql.cj.exceptions.ExceptionInterceptor;
import com.mysql.cj.log.Log;
import com.mysql.cj.protocol.Protocol.ProtocolEventHandler;
import com.mysql.cj.protocol.Protocol.ProtocolEventListener.EventType;
import com.mysql.cj.util.TimeUtil;
public abstract class AbstractProtocol implements Protocol, ProtocolEventHandler {
protected Session session;
protected SocketConnection socketConnection;
protected PropertySet propertySet;
protected TransactionEventHandler transactionManager;
/** The logger we're going to use */
protected transient Log log;
protected ExceptionInterceptor exceptionInterceptor;
protected AuthenticationProvider authProvider;
protected MessageBuilder messageBuilder;
// Default until packet sender created
private PacketSentTimeHolder packetSentTimeHolder = new PacketSentTimeHolder() {
};
private PacketReceivedTimeHolder packetReceivedTimeHolder = new PacketReceivedTimeHolder() {
};
protected LinkedList packetDebugRingBuffer = null;
protected boolean useNanosForElapsedTime;
protected String queryTimingUnits;
private CopyOnWriteArrayList> listeners = new CopyOnWriteArrayList<>();
@Override
public void init(Session sess, SocketConnection phConnection, PropertySet propSet, TransactionEventHandler trManager) {
this.session = sess;
this.propertySet = propSet;
this.socketConnection = phConnection;
this.exceptionInterceptor = this.socketConnection.getExceptionInterceptor();
this.transactionManager = trManager;
this.useNanosForElapsedTime = this.propertySet.getBooleanProperty(PropertyKey.useNanosForElapsedTime).getValue() && TimeUtil.nanoTimeAvailable();
this.queryTimingUnits = this.useNanosForElapsedTime ? Messages.getString("Nanoseconds") : Messages.getString("Milliseconds");
}
public SocketConnection getSocketConnection() {
return this.socketConnection;
}
public AuthenticationProvider getAuthenticationProvider() {
return this.authProvider;
}
public ExceptionInterceptor getExceptionInterceptor() {
return this.exceptionInterceptor;
}
public PacketSentTimeHolder getPacketSentTimeHolder() {
return this.packetSentTimeHolder;
}
public void setPacketSentTimeHolder(PacketSentTimeHolder packetSentTimeHolder) {
this.packetSentTimeHolder = packetSentTimeHolder;
}
public PacketReceivedTimeHolder getPacketReceivedTimeHolder() {
return this.packetReceivedTimeHolder;
}
public void setPacketReceivedTimeHolder(PacketReceivedTimeHolder packetReceivedTimeHolder) {
this.packetReceivedTimeHolder = packetReceivedTimeHolder;
}
public PropertySet getPropertySet() {
return this.propertySet;
}
public void setPropertySet(PropertySet propertySet) {
this.propertySet = propertySet;
}
@Override
public MessageBuilder getMessageBuilder() {
return this.messageBuilder;
}
@Override
public void reset() {
// no-op
}
@Override
public String getQueryTimingUnits() {
return this.queryTimingUnits;
}
@Override
public void addListener(ProtocolEventListener l) {
this.listeners.addIfAbsent(new WeakReference<>(l));
}
@Override
public void removeListener(ProtocolEventListener listener) {
for (WeakReference wr : this.listeners) {
ProtocolEventListener l = wr.get();
if (l == listener) {
this.listeners.remove(wr);
break;
}
}
}
@Override
public void invokeListeners(EventType type, Throwable reason) {
for (WeakReference wr : this.listeners) {
ProtocolEventListener l = wr.get();
if (l != null) {
l.handleEvent(type, this, reason);
} else {
this.listeners.remove(wr);
}
}
}
}
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