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JDBC Type 4 driver for MySQL
/*
* Copyright (c) 2018, 2021, 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.x;
import java.util.List;
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.protocol.ProtocolEntity;
import com.mysql.cj.protocol.Warning;
import com.mysql.cj.x.protobuf.MysqlxDatatypes.Scalar;
import com.mysql.cj.x.protobuf.MysqlxNotice.Frame;
import com.mysql.cj.x.protobuf.MysqlxNotice.SessionStateChanged;
import com.mysql.cj.x.protobuf.MysqlxNotice.SessionVariableChanged;
/**
* ProtocolEntity representing a {@link Notice} message.
*/
public class Notice implements ProtocolEntity {
public static Notice getInstance(XMessage message) {
Frame notice = (Frame) message.getMessage();
switch (notice.getType()) {
case Frame.Type.WARNING_VALUE:
return new XWarning(notice);
case Frame.Type.SESSION_VARIABLE_CHANGED_VALUE:
return new XSessionVariableChanged(notice);
case Frame.Type.SESSION_STATE_CHANGED_VALUE:
return new XSessionStateChanged(notice);
case Frame.Type.GROUP_REPLICATION_STATE_CHANGED_VALUE:
// TODO
break;
default:
break;
}
return new Notice(notice);
}
public static final int NoticeScope_Global = 1;
public static final int NoticeScope_Local = 2;
public static final int NoticeType_WARNING = 1;
public static final int NoticeType_SESSION_VARIABLE_CHANGED = 2;
public static final int NoticeType_SESSION_STATE_CHANGED = 3;
public static final int NoticeType_GROUP_REPLICATION_STATE_CHANGED = 4;
public static final int SessionStateChanged_CURRENT_SCHEMA = 1;
public static final int SessionStateChanged_ACCOUNT_EXPIRED = 2;
public static final int SessionStateChanged_GENERATED_INSERT_ID = 3;
public static final int SessionStateChanged_ROWS_AFFECTED = 4;
public static final int SessionStateChanged_ROWS_FOUND = 5;
public static final int SessionStateChanged_ROWS_MATCHED = 6;
public static final int SessionStateChanged_TRX_COMMITTED = 7;
public static final int SessionStateChanged_TRX_ROLLEDBACK = 9;
public static final int SessionStateChanged_PRODUCED_MESSAGE = 10;
public static final int SessionStateChanged_CLIENT_ID_ASSIGNED = 11;
public static final int SessionStateChanged_GENERATED_DOCUMENT_IDS = 12;
protected int scope = 0;
protected int type = 0;
public Notice(Frame frm) {
this.scope = frm.getScope().getNumber();
this.type = frm.getType();
}
public int getType() {
return this.type;
}
public int getScope() {
return this.scope;
}
@SuppressWarnings("unchecked")
static 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);
}
}
public static class XWarning extends Notice implements Warning {
private int level;
private long code;
private String message;
public XWarning(Frame frm) {
super(frm);
com.mysql.cj.x.protobuf.MysqlxNotice.Warning warn = parseNotice(frm.getPayload(), com.mysql.cj.x.protobuf.MysqlxNotice.Warning.class);
this.level = warn.getLevel().getNumber();
this.code = Integer.toUnsignedLong(warn.getCode());
this.message = warn.getMsg();
}
@Override
public int getLevel() {
return this.level;
}
@Override
public long getCode() {
return this.code;
}
@Override
public String getMessage() {
return this.message;
}
}
public static class XSessionVariableChanged extends Notice {
private String paramName = null;
private Scalar value = null;
public XSessionVariableChanged(Frame frm) {
super(frm);
SessionVariableChanged svmsg = parseNotice(frm.getPayload(), SessionVariableChanged.class);
this.paramName = svmsg.getParam();
this.value = svmsg.getValue();
}
public String getParamName() {
return this.paramName;
}
public Scalar getValue() {
return this.value;
}
}
public static class XSessionStateChanged extends Notice {
private Integer paramType = null;
private List valueList = null;
public XSessionStateChanged(Frame frm) {
super(frm);
SessionStateChanged ssmsg = parseNotice(frm.getPayload(), SessionStateChanged.class);
this.paramType = ssmsg.getParam().getNumber();
this.valueList = ssmsg.getValueList();
}
public Integer getParamType() {
return this.paramType;
}
public List getValueList() {
return this.valueList;
}
public Scalar getValue() {
if (this.valueList != null && !this.valueList.isEmpty()) {
return this.valueList.get(0);
}
return null;
}
}
}