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LogSummaryAppenderUtils.java
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LogSummaryAppenderUtils.java
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/**
* Licensed to JumpMind Inc under one or more contributor
* license agreements. See the NOTICE file distributed
* with this work for additional information regarding
* copyright ownership. JumpMind Inc licenses this file
* to you under the GNU General Public License, version 3.0 (GPLv3)
* (the "License"); you may not use this file except in compliance
* with the License.
*
* You should have received a copy of the GNU General Public License,
* version 3.0 (GPLv3) along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*
* 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.jumpmind.symmetric.util;
import java.util.Collections;
import java.util.List;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.jumpmind.util.LogSummary;
import org.jumpmind.util.LogSummaryAppender;
public class LogSummaryAppenderUtils {
private static final String LOG_SUMMARY_APPENDER_NAME = "SUMMARY";
private static final Logger log = Logger.getLogger(LogSummaryAppenderUtils.class);
private LogSummaryAppenderUtils() {
}
public static void registerLogSummaryAppender() {
LogSummaryAppender appender = getLogSummaryAppender();
if (appender == null) {
registerLogSummaryAppenderInternal();
}
}
public static LogSummaryAppender getLogSummaryAppender() {
try {
LogSummaryAppender appender = (LogSummaryAppender) org.apache.log4j.Logger.getRootLogger().getAppender(
LOG_SUMMARY_APPENDER_NAME);
return appender;
} catch (Exception ex) {
// Can get ClassCastException if if the app has been recycled in the same container.
log.debug("Failed to load appender " + LOG_SUMMARY_APPENDER_NAME, ex);
try {
org.apache.log4j.Logger.getRootLogger().removeAppender(LOG_SUMMARY_APPENDER_NAME);
} catch (Exception ex2) {
log.debug("Failed to remove appender " + LOG_SUMMARY_APPENDER_NAME, ex2);
}
return registerLogSummaryAppenderInternal();
}
}
private static LogSummaryAppender registerLogSummaryAppenderInternal() {
LogSummaryAppender appender = new LogSummaryAppender();
appender.setName(LOG_SUMMARY_APPENDER_NAME);
appender.setThreshold(Level.WARN);
org.apache.log4j.Logger.getRootLogger().addAppender(appender);
return appender;
}
public static void clearAllLogSummaries(String engineName) {
LogSummaryAppender appender = getLogSummaryAppender();
if (appender != null) {
appender.clearAll(engineName);
}
}
public static List<LogSummary> getLogSummaryWarnings(String engineName) {
return getLogSummaries(engineName, Level.WARN);
}
public static List<LogSummary> getLogSummaryErrors(String engineName) {
return getLogSummaries(engineName, Level.ERROR);
}
@SuppressWarnings("unchecked")
public static List<LogSummary> getLogSummaries(String engineName, Level level) {
LogSummaryAppender appender = getLogSummaryAppender();
if (appender != null) {
return appender.getLogSummaries(engineName, level);
} else {
return Collections.EMPTY_LIST;
}
}
}