+++ /dev/null
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.log4j.helpers;
-
-import org.apache.log4j.spi.ErrorHandler;
-import org.apache.log4j.spi.LoggingEvent;
-import org.apache.log4j.Logger;
-import org.apache.log4j.Appender;
-
-import java.io.InterruptedIOException;
-
-/**
-
- The <code>OnlyOnceErrorHandler</code> implements log4j's default
- error handling policy which consists of emitting a message for the
- first error in an appender and ignoring all following errors.
-
- <p>The error message is printed on <code>System.err</code>.
-
- <p>This policy aims at protecting an otherwise working application
- from being flooded with error messages when logging fails.
-
- @author Ceki Gülcü
- @since 0.9.0 */
-public class OnlyOnceErrorHandler implements ErrorHandler {
-
-
- final String WARN_PREFIX = "log4j warning: ";
- final String ERROR_PREFIX = "log4j error: ";
-
- boolean firstTime = true;
-
-
- /**
- Does not do anything.
- */
- public
- void setLogger(Logger logger) {
- }
-
-
- /**
- No options to activate.
- */
- public
- void activateOptions() {
- }
-
-
- /**
- Prints the message and the stack trace of the exception on
- <code>System.err</code>. */
- public
- void error(String message, Exception e, int errorCode) {
- error(message, e, errorCode, null);
- }
-
- /**
- Prints the message and the stack trace of the exception on
- <code>System.err</code>.
- */
- public
- void error(String message, Exception e, int errorCode, LoggingEvent event) {
- if (e instanceof InterruptedIOException || e instanceof InterruptedException) {
- Thread.currentThread().interrupt();
- }
- if(firstTime) {
- LogLog.error(message, e);
- firstTime = false;
- }
- }
-
-
- /**
- Print a the error message passed as parameter on
- <code>System.err</code>.
- */
- public
- void error(String message) {
- if(firstTime) {
- LogLog.error(message);
- firstTime = false;
- }
- }
-
- /**
- Does not do anything.
- */
- public
- void setAppender(Appender appender) {
- }
-
- /**
- Does not do anything.
- */
- public
- void setBackupAppender(Appender appender) {
- }
-}