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/*
* Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.logging;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Serializable;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.persistence.exceptions.ValidationException;
import org.eclipse.persistence.internal.helper.Helper;
/**
* <b>Purpose</b>: Default log used for the session when message logging is
* enabled. The session can log information such as,
* <ul>
* <li>all SQL executed
* <li>informational messages
* <li>debugging information
* <li>all exceptions that occur within TopLink
* </ul>
* As well information about the message can be logged such as,
* <ul>
* <li>the session logging the message
* <li>the connection executing the SQL
* <li>the thread in which the log entry occurred
* <li>the exact time (to milliseconds) that the log entry occurred
* <li>the stack trace to the exception
* </ul>
*
* @see SessionLog
* @see AbstractSessionLog
*
* @author Big Country
*/
public class DefaultSessionLog extends AbstractSessionLog implements Serializable {
/**
* The filename associated with this DefaultSessionLog, if it is being
* written out to a file
**/
protected String fileName;
/**
* Represents the Map that stores log levels per the name space strings. The
* keys are category names. The values are log levels.
*/
private Map<String, Integer> categoryLogLevelMap = new HashMap();
public DefaultSessionLog() {
super();
for (int i = 0; i < loggerCatagories.length; i++) {
String loggerCategory = loggerCatagories[i];
categoryLogLevelMap.put(loggerCategory, null);
}
}
public DefaultSessionLog(Writer writer) {
this();
this.initialize(writer);
}
@Override
public void setLevel(int level, String category) {
if (category == null) {
this.level = level;
} else if (categoryLogLevelMap.containsKey(category)) {
categoryLogLevelMap.put(category, level);
}
}
@Override
public int getLevel(String category) {
if (category != null) {
Integer level = this.categoryLogLevelMap.get(category);
if (level != null) {
return level;
}
}
return super.getLevel(category);
}
/**
* Check if a message of the given level would actually be logged by the
* logger with name space built from the given session and category.
* <p>
*
* @return true if the given message level will be logged for the given
* category
*/
@Override
public boolean shouldLog(int level, String category) {
return (getLevel(category) <= level);
}
/**
* Initialize the log to be backward-compatible with the original TopLink
* log.
*/
protected void initialize() {
this.setShouldPrintSession(true);
this.setShouldPrintConnection(true);
}
/**
* Initialize the log.
*/
protected void initialize(Writer writer) {
this.writer = writer;
}
/**
* Log the entry. This writes the log entries information to a
* writer such as System.out or a file.
*/
public void log(SessionLogEntry entry) {
if (!shouldLog(entry.getLevel(), entry.getNameSpace())) {
return;
}
synchronized (this) {
try {
printPrefixString(entry.getLevel(), entry.getNameSpace());
this.getWriter().write(getSupplementDetailString(entry));
if (entry.hasMessage()) {
writeMessage(formatMessage(entry));
getWriter().write(Helper.cr());
getWriter().flush();
}
if (entry.hasException()) {
if (shouldLogExceptionStackTrace()) {
entry.getException().printStackTrace(new PrintWriter(getWriter()));
} else {
writeMessage(entry.getException().toString());
}
getWriter().write(Helper.cr());
getWriter().flush();
}
} catch (IOException exception) {
throw ValidationException.logIOError(exception);
}
}
}
/**
* Set the writer that will receive the formatted log entries for a
* file name.
*/
public void setWriter(String aFileName) {
if (aFileName != null) {
try {
this.writer = new FileWriter(aFileName);
this.fileName = aFileName;
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* For the given writer, return it's associated filename. If
* associated writer does not have a filename, return null.
*/
public String getWriterFilename() {
return fileName;
}
/**
* Append the specified message information to the writer.
*/
protected void writeMessage(String message) throws IOException {
this.getWriter().write(message);
}
/**
* Append the separator string to the writer.
*/
protected void writeSeparator() throws IOException {
this.getWriter().write("--");
}
}
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