/*
Copyright 2005-2007 MySQL AB, 2008 Sun Microsystems
All rights reserved. Use is subject to license terms.
The MySQL Connector/J is licensed under the terms of the GPL,
like most MySQL Connectors. There are special exceptions to the
terms and conditions of the GPL as it is applied to this software,
see the FLOSS License Exception available on mysql.com.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; version 2 of the
License.
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 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.jdbc.log;
import com.mysql.jdbc.Util;
import com.mysql.jdbc.profiler.ProfilerEvent;
public class LogUtils {
public static final String CALLER_INFORMATION_NOT_AVAILABLE = "Caller information not available";
private static final String LINE_SEPARATOR = System
.getProperty("line.separator");
private static final int LINE_SEPARATOR_LENGTH = LINE_SEPARATOR.length();
public static Object expandProfilerEventIfNecessary(
Object possibleProfilerEvent) {
if (possibleProfilerEvent instanceof ProfilerEvent) {
StringBuffer msgBuf = new StringBuffer();
ProfilerEvent evt = (ProfilerEvent) possibleProfilerEvent;
Throwable locationException = evt.getEventCreationPoint();
if (locationException == null) {
locationException = new Throwable();
}
msgBuf.append("Profiler Event: [");
boolean appendLocationInfo = false;
switch (evt.getEventType()) {
case ProfilerEvent.TYPE_EXECUTE:
msgBuf.append("EXECUTE");
break;
case ProfilerEvent.TYPE_FETCH:
msgBuf.append("FETCH");
break;
case ProfilerEvent.TYPE_OBJECT_CREATION:
msgBuf.append("CONSTRUCT");
break;
case ProfilerEvent.TYPE_PREPARE:
msgBuf.append("PREPARE");
break;
case ProfilerEvent.TYPE_QUERY:
msgBuf.append("QUERY");
break;
case ProfilerEvent.TYPE_WARN:
msgBuf.append("WARN");
appendLocationInfo = true;
break;
case ProfilerEvent.TYPE_SLOW_QUERY:
msgBuf.append("SLOW QUERY");
appendLocationInfo = false;
break;
default:
msgBuf.append("UNKNOWN");
}
msgBuf.append("] ");
msgBuf.append(findCallingClassAndMethod(locationException));
msgBuf.append(" duration: ");
msgBuf.append(evt.getEventDuration());
msgBuf.append(" ");
msgBuf.append(evt.getDurationUnits());
msgBuf.append(", connection-id: ");
msgBuf.append(evt.getConnectionId());
msgBuf.append(", statement-id: ");
msgBuf.append(evt.getStatementId());
msgBuf.append(", resultset-id: ");
msgBuf.append(evt.getResultSetId());
String evtMessage = evt.getMessage();
if (evtMessage != null) {
msgBuf.append(", message: ");
msgBuf.append(evtMessage);
}
if (appendLocationInfo) {
msgBuf
.append("\n\nFull stack trace of location where event occurred:\n\n");
msgBuf.append(Util.stackTraceToString(locationException));
msgBuf.append("\n");
}
return msgBuf;
}
return possibleProfilerEvent;
}
public static String findCallingClassAndMethod(Throwable t) {
String stackTraceAsString = Util.stackTraceToString(t);
String callingClassAndMethod = CALLER_INFORMATION_NOT_AVAILABLE;
int endInternalMethods = stackTraceAsString
.lastIndexOf("com.mysql.jdbc");
if (endInternalMethods != -1) {
int endOfLine = -1;
int compliancePackage = stackTraceAsString.indexOf(
"com.mysql.jdbc.compliance", endInternalMethods);
if (compliancePackage != -1) {
endOfLine = compliancePackage - LINE_SEPARATOR_LENGTH;
} else {
endOfLine = stackTraceAsString.indexOf(LINE_SEPARATOR,
endInternalMethods);
}
if (endOfLine != -1) {
int nextEndOfLine = stackTraceAsString.indexOf(LINE_SEPARATOR,
endOfLine + LINE_SEPARATOR_LENGTH);
if (nextEndOfLine != -1) {
callingClassAndMethod = stackTraceAsString.substring(
endOfLine + LINE_SEPARATOR_LENGTH, nextEndOfLine);
} else {
callingClassAndMethod = stackTraceAsString
.substring(endOfLine + LINE_SEPARATOR_LENGTH);
}
}
}
if (!callingClassAndMethod.startsWith("\tat ") &&
!callingClassAndMethod.startsWith("at ")) {
return "at " + callingClassAndMethod;
}
return callingClassAndMethod;
}
}