/*
* Copyright (c) 2005-2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.wso2.carbon.event.tracer;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.log4j.Appender;
import org.apache.log4j.Layout;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggingEvent;
// MemoryAppender should not be used here,
// this should be handled using a logging provider
import org.wso2.carbon.utils.logging.appenders.MemoryAppender;
import java.util.ArrayList;
import java.util.List;
public class EventTracerAdminService {
private static final Log log = LogFactory.getLog(EventTracerAdminService.class);
private static final String EVENT_TRACE_LOGGER = "EVENT_TRACE_LOGGER";
private static final String EVENT_TRACE_MEMORYAPPENDER = "EVENT_TRACE_MEMORYAPPENDER";
public String[] getTraceLogs() {
int amount;
int DEFAULT_NO_OF_LOGS = 100;
Logger logger = Logger.getLogger(EVENT_TRACE_LOGGER);
Appender appender = logger.getAppender(EVENT_TRACE_MEMORYAPPENDER);
if (appender instanceof MemoryAppender) {
MemoryAppender memoryAppender = (MemoryAppender) appender;
if ((memoryAppender.getCircularQueue() != null)) {
amount = memoryAppender.getBufferSize();
} else {
return new String[]{
"--- No trace entries found. " +
"You can enable tracing on event receivers, event publishers or execution plans by vising the relevant pages ---"};
}
if ((memoryAppender.getCircularQueue().getObjects(amount) == null) ||
(memoryAppender.getCircularQueue().getObjects(amount).length == 0)) {
return new String[]{
"--- No trace entries found. " +
"You can enable tracing on event receivers, event publishers or execution plans by vising the relevant pages ---"};
}
Object[] objects;
if (amount < 1) {
objects = memoryAppender.getCircularQueue().getObjects(DEFAULT_NO_OF_LOGS);
} else {
objects = memoryAppender.getCircularQueue().getObjects(amount);
}
String[] resp = new String[objects.length];
Layout layout = memoryAppender.getLayout();
for (int i = 0; i < objects.length; i++) {
LoggingEvent logEvt = (LoggingEvent) objects[i];
if (logEvt != null) {
resp[i] = StringEscapeUtils.escapeHtml(layout.format(logEvt));
}
}
return resp;
} else {
return new String[]{"The trace log must be configured to use the " +
"org.wso2.carbon.logging.appenders.MemoryAppender to view entries through the admin console"};
}
}
public boolean clearTraceLogs() {
Logger logger = Logger.getLogger(EVENT_TRACE_LOGGER);
Appender appender = logger.getAppender(EVENT_TRACE_MEMORYAPPENDER);
if (appender instanceof MemoryAppender) {
try {
MemoryAppender memoryAppender = (MemoryAppender) appender;
if (memoryAppender.getCircularQueue() != null) {
memoryAppender.getCircularQueue().clear();
}
return true;
} catch (Exception e) {
return false;
}
} else {
return false;
}
}
public String[] searchTraceLog(String keyword,
boolean ignoreCase) throws EventTracerAdminServiceException {
int DEFAULT_NO_OF_LOGS = 100;
int definedamonut;
if (keyword == null) {
handleException("Key word can not be null");
}
if ("ALL".equals(keyword) || "".equals(keyword)) {
return getTraceLogs();
}
Logger logger = Logger.getLogger(EVENT_TRACE_LOGGER);
Appender appender = logger.getAppender(EVENT_TRACE_MEMORYAPPENDER);
if (appender instanceof MemoryAppender) {
MemoryAppender memoryAppender
= (MemoryAppender) appender;
if ((memoryAppender.getCircularQueue() != null)) {
definedamonut = memoryAppender.getBufferSize();
} else {
return new String[]{
"--- No trace entries found for " +
" " + keyword + " ---"
};
}
if ((memoryAppender.getCircularQueue().getObjects(definedamonut) == null) ||
(memoryAppender.getCircularQueue().getObjects(definedamonut).length == 0)) {
return new String[]{
"--- No trace entries found for " +
"the " + keyword + " ---"
};
}
Object[] objects;
if (definedamonut < 1) {
objects = memoryAppender.getCircularQueue().getObjects(DEFAULT_NO_OF_LOGS);
} else {
objects = memoryAppender.getCircularQueue().getObjects(definedamonut);
}
Layout layout = memoryAppender.getLayout();
List<String> resultList = new ArrayList<String>();
for (Object object : objects) {
LoggingEvent logEvt = (LoggingEvent) object;
if (logEvt != null) {
String result = layout.format(logEvt);
if (result != null) {
if (!ignoreCase) {
if (result.indexOf(keyword) > -1) {
resultList.add(StringEscapeUtils.escapeHtml(result));
}
} else {
if (keyword != null &&
result.toLowerCase().indexOf(keyword.toLowerCase()) > -1) {
resultList.add(StringEscapeUtils.escapeHtml(result));
}
}
}
}
}
if (resultList.isEmpty()) {
return new String[]{
"--- No trace entries found for " +
"the " + keyword + " ---"
};
}
return resultList.toArray(new String[resultList.size()]);
} else {
return new String[]{"The trace log must be configured to use the " +
"org.wso2.carbon.logging.appenders.MemoryAppender to view entries through the " +
"admin console"};
}
}
public String[] getLogs() {
int DEFAULT_NO_OF_LOGS = 100;
int definedamount;
Appender appender
= Logger.getRootLogger().getAppender("LOG_MEMORYAPPENDER");
if (appender instanceof MemoryAppender) {
MemoryAppender memoryAppender = (MemoryAppender) appender;
if ((memoryAppender.getCircularQueue() != null)) {
definedamount = memoryAppender.getBufferSize();
} else {
return new String[]{
"--- No log entries found. " +
"You may try increasing the log level ---"
};
}
if ((memoryAppender.getCircularQueue().getObjects(definedamount) == null) ||
(memoryAppender.getCircularQueue().getObjects(definedamount).length == 0)) {
return new String[]{
"--- No log entries found. " +
"You may try increasing the log level ---"
};
}
Object[] objects;
if (definedamount < 1) {
objects = memoryAppender.getCircularQueue().getObjects(DEFAULT_NO_OF_LOGS);
} else {
objects = memoryAppender.getCircularQueue().getObjects(definedamount);
}
String[] resp = new String[objects.length];
Layout layout = memoryAppender.getLayout();
for (int i = 0; i < objects.length; i++) {
LoggingEvent logEvt = (LoggingEvent) objects[i];
if (logEvt != null) {
resp[i] = StringEscapeUtils.escapeHtml(layout.format(logEvt));
}
}
return resp;
} else {
return new String[]{"The log must be configured to use the " +
"org.wso2.carbon.logging.appenders.MemoryAppender to view entries on the admin console"};
}
}
private void handleException(String msg) throws EventTracerAdminServiceException {
log.error(msg);
throw new EventTracerAdminServiceException(msg);
}
}