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JDBC Type 4 driver for MySQL
/*
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
*
* 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.x;
import com.google.protobuf.ByteString;
import com.google.protobuf.GeneratedMessageV3;
import com.google.protobuf.InvalidProtocolBufferException;
import com.google.protobuf.Parser;
import com.mysql.cj.exceptions.CJCommunicationsException;
import com.mysql.cj.exceptions.WrongArgumentException;
import com.mysql.cj.protocol.ProtocolEntityFactory;
import com.mysql.cj.x.protobuf.MysqlxNotice.Frame;
import com.mysql.cj.x.protobuf.MysqlxNotice.SessionStateChanged;
import com.mysql.cj.x.protobuf.MysqlxNotice.SessionVariableChanged;
public class NoticeFactory implements ProtocolEntityFactory {
@Override
public Notice createFromMessage(XMessage message) {
Frame notice = (Frame) message.getMessage();
if (notice.getScope() == Frame.Scope.GLOBAL) {
// TODO we don't yet have any global notifications defined.
// throw new RuntimeException("TODO: implement me");
return null;
}
switch (notice.getType()) {
case Notice.XProtocolNoticeFrameType_WARNING:
com.mysql.cj.x.protobuf.MysqlxNotice.Warning warn = parseNotice((notice).getPayload(), com.mysql.cj.x.protobuf.MysqlxNotice.Warning.class);
return new Notice(warn.getLevel().getNumber(), Integer.toUnsignedLong(warn.getCode()), warn.getMsg());
case Notice.XProtocolNoticeFrameType_SESS_VAR_CHANGED:
SessionVariableChanged svmsg = parseNotice(notice.getPayload(), SessionVariableChanged.class);
return new Notice(svmsg.getParam(), svmsg.getValue());
case Notice.XProtocolNoticeFrameType_SESS_STATE_CHANGED:
SessionStateChanged ssmsg = parseNotice(notice.getPayload(), SessionStateChanged.class);
return new Notice(ssmsg.getParam().getNumber(), ssmsg.getValueList());
default:
// TODO log error normally instead of sysout
new WrongArgumentException("Got an unknown notice: " + notice).printStackTrace();
break;
}
return null;
}
@SuppressWarnings("unchecked")
private T parseNotice(ByteString payload, Class noticeClass) {
try {
Parser parser = (Parser) MessageConstants.MESSAGE_CLASS_TO_PARSER.get(noticeClass);
return parser.parseFrom(payload);
} catch (InvalidProtocolBufferException ex) {
throw new CJCommunicationsException(ex);
}
}
}