/**
* @param event
* @param depth
* @param lfc
* @param ndcStr
*/
private void start(LoggingEvent event, int depth, TimelineLifecycle lfc, String ndcStr) {
NdcContext ndcCtxt = getNdcContext(lfc);
if (ndcCtxt.getNdcObj() != null)
throw new IllegalStateException(
"ZMonitor Log4j stack Operation Logic Error or forget to cleanup the state.");
ndcCtxt.doStart(createName(event, null), event.getRenderedMessage(), ndcStr, depth);
}
@Override
protected void append(LoggingEvent logEvent) {
final String message = logEvent.getRenderedMessage();
final Level level = logEvent.getLevel();
final String streamId = getStreamId(level);
final Display display = Display.getDefault();
final Thread thread = display.getThread();
Thread _currentThread = Thread.currentThread();
final boolean uiThread = Objects.equal(thread, _currentThread);
final Runnable _function =
new Runnable() {
@Override
public void run() {
try {
final IOConsole console = AntlrConsoleFactory.getConsole();
final IOConsoleOutputStream stream = console.newOutputStream();
final ConsoleColorProvider colorProvider = new ConsoleColorProvider();
final Color color = colorProvider.getColor(streamId);
stream.setColor(color);
stream.setActivateOnWrite(true);
stream.write((message + "\n"));
stream.close();
} catch (Throwable ex) {
ex.printStackTrace();
}
}
};
final Runnable printTask = _function;
if (uiThread) {
printTask.run();
} else {
display.syncExec(printTask);
}
}
private LogMessageEntity convertToLogMessageEntity(LoggingEvent loggingEvent)
throws UnknownHostException {
return new LogMessageEntity(
loggingEvent.getTimeStamp(),
loggingEvent.getRenderedMessage(),
new PatternLayout("%C{1}").format(loggingEvent),
(String) loggingEvent.getMDC(MDCHelper.MDC_TRANSACTION_ID),
String.format("%s / %s", nodeId, InetAddress.getLocalHost().getHostName()));
}
/**
* Encodes a LoggingEvent into a HashMap using the logstash JSON format.
*
* @param loggingEvent The LoggingEvent to encode.
* @param includeLocationInfo Whether to include LocationInfo in the map, or not.
* @return A Map representing the LoggingEvent, which is suitable to be serialized by a JSON
* encoder such as Jackson.
*/
@SuppressWarnings("rawtypes")
public static Map<String, Object> encodeToMap(
LoggingEvent loggingEvent, boolean includeLocationInfo) {
Map<String, Object> logstashEvent = new LoggingEventMap();
String threadName = loggingEvent.getThreadName();
long timestamp = loggingEvent.getTimeStamp();
HashMap<String, Object> exceptionInformation = new HashMap<String, Object>();
Map mdc = loggingEvent.getProperties();
String ndc = loggingEvent.getNDC();
logstashEvent.put("@version", VERSION);
logstashEvent.put("@timestamp", dateFormat(timestamp));
logstashEvent.put("source_host", getHostname());
logstashEvent.put("message", loggingEvent.getRenderedMessage());
if (loggingEvent.getThrowableInformation() != null) {
final ThrowableInformation throwableInformation = loggingEvent.getThrowableInformation();
if (throwableInformation.getThrowable().getClass().getCanonicalName() != null) {
exceptionInformation.put(
"exception_class", throwableInformation.getThrowable().getClass().getCanonicalName());
}
if (throwableInformation.getThrowable().getMessage() != null) {
exceptionInformation.put(
"exception_message", throwableInformation.getThrowable().getMessage());
}
if (throwableInformation.getThrowableStrRep() != null) {
StringBuilder stackTrace = new StringBuilder();
for (String line : throwableInformation.getThrowableStrRep()) {
stackTrace.append(line);
stackTrace.append("\n");
}
exceptionInformation.put("stacktrace", stackTrace);
}
logstashEvent.put("exception", exceptionInformation);
}
if (includeLocationInfo) {
LocationInfo info = loggingEvent.getLocationInformation();
logstashEvent.put("file", info.getFileName());
logstashEvent.put("line_number", info.getLineNumber());
logstashEvent.put("class", info.getClassName());
logstashEvent.put("method", info.getMethodName());
}
logstashEvent.put("logger_name", loggingEvent.getLoggerName());
logstashEvent.put("mdc", mdc);
logstashEvent.put("ndc", ndc);
logstashEvent.put("level", loggingEvent.getLevel().toString());
logstashEvent.put("thread_name", threadName);
return logstashEvent;
}
/**
* Creates a new <code>EventDetails</code> instance.
*
* @param aEvent a <code>LoggingEvent</code> value
*/
EventDetails(LoggingEvent aEvent) {
this(
aEvent.timeStamp,
aEvent.getLevel(),
aEvent.getLoggerName(),
aEvent.getNDC(),
aEvent.getThreadName(),
aEvent.getRenderedMessage(),
aEvent.getThrowableStrRep(),
(aEvent.getLocationInformation() == null)
? null
: aEvent.getLocationInformation().fullInfo);
}
/* */ public String convert(LoggingEvent event) /* */ {
/* 393 */ switch (this.type) {
/* */ case 2000:
/* 395 */ return Long.toString(event.timeStamp - LoggingEvent.getStartTime());
/* */ case 2001:
/* 397 */ return event.getThreadName();
/* */ case 2002:
/* 399 */ return event.getLevel().toString();
/* */ case 2003:
/* 401 */ return event.getNDC();
/* */ case 2004:
/* 403 */ return event.getRenderedMessage();
/* */ }
/* 405 */ return null;
/* */ }
public void doAppend(LoggingEvent arg0) {
String logger = arg0.getLoggerName();
String message = arg0.getRenderedMessage();
Level level = arg0.getLevel();
Set toIgnore = (Set) m_ignore.get(logger);
if (toIgnore != null) {
// if any of the strings in the set start our message, skip it
for (Iterator i = toIgnore.iterator(); i.hasNext(); ) {
String start = (String) i.next();
if (message.startsWith(start)) return;
}
}
m_other.doAppend(arg0);
}
@Override
public String format(LoggingEvent event) {
if (sbuf.capacity() > MAX_CAPACITY) {
sbuf = new StringBuffer(BUF_SIZE);
} else {
sbuf.setLength(0);
}
sbuf.append(Layout.LINE_SEP + "<tr>" + Layout.LINE_SEP);
sbuf.append("<td title=\"Level\">");
if (event.getLevel().equals(Level.DEBUG)) {
sbuf.append("<font color=\"#339933\">");
sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));
sbuf.append("</font>");
} else if (event.getLevel().isGreaterOrEqual(Level.WARN)) {
sbuf.append("<font color=\"#993300\"><strong>");
sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));
sbuf.append("</strong></font>");
} else {
sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));
}
sbuf.append("</td>" + Layout.LINE_SEP);
sbuf.append("<td title=\"Message\">");
sbuf.append(Transform.escapeTags(event.getRenderedMessage()));
sbuf.append("</td>" + Layout.LINE_SEP);
sbuf.append("</tr>" + Layout.LINE_SEP);
if (event.getNDC() != null) {
sbuf.append(
"<tr><td bgcolor=\"#EEEEEE\" style=\"font-size : xx-small;\" colspan=\"6\" title=\"Nested Diagnostic Context\">");
sbuf.append("NDC: " + Transform.escapeTags(event.getNDC()));
sbuf.append("</td></tr>" + Layout.LINE_SEP);
}
String[] s = event.getThrowableStrRep();
if (s != null) {
sbuf.append(
"<tr><td bgcolor=\"#993300\" style=\"color:White; font-size : xx-small;\" colspan=\"6\">");
appendThrowableAsHTML(s, sbuf);
sbuf.append("</td></tr>" + Layout.LINE_SEP);
}
return sbuf.toString();
}
public String convert(LoggingEvent event) {
switch (type) {
case RELATIVE_TIME_CONVERTER:
return (String.valueOf(event.timeStamp - LoggingEvent.getStartTime()));
case THREAD_CONVERTER:
return event.getThreadName();
case LEVEL_CONVERTER:
return event.getLevel().toString();
case NDC_CONVERTER:
return event.getNDC();
case MESSAGE_CONVERTER:
{
return event.getRenderedMessage();
}
default:
return null;
}
}
@Override
protected void append(LoggingEvent event) {
try {
buf.reset();
writeHeader(event);
writeSP();
writeStructuredData();
writeSP();
if (prefixMessageWithBOM) writeBOM();
writeString(event.getRenderedMessage());
protocol.send(this);
} catch (IOException e) {
errorHandler.error(
"Failed to emit message by " + protocol + " connection to " + host + ":" + port,
e,
ErrorCode.WRITE_FAILURE,
event);
}
}
/**
* Developer will use log4j's: NDC.push() & NDC.pop() to command ZMonitor to do: tl.start() &
* tl.end()
*
* <p>ASSUMPTION: user wont use ZMonitor directly while using log4j NDC, the current tl.depth will
* always match to the last NDC state we may consider the direct operation of timeline in the
* future.
*
* <p>Base on this concept:
*
* <p>If: current NDC Depth > last NDC Depth( or there's no last NDC Depth) we need to do
* tl.start(), and push current NDC Depth. (check : if currentTlDepth != lastTlDepth do failover.)
*
* <p>If: current NDC Depth = last NDC Depth we simply do tl.record().
*
* <p>If: current NDC Depth < last NDC Depth if: current NDC Depth = last.last NDC Depth We call
* tl.end() and pop NDC stack, because user is telling us he want to end the current stack. (check
* : if currentTlDepth != lastTlDepth do failover.)
*
* <p>if: current NDC Depth > last.last NDC Depth We simply do tl.record() because it's not reach
* the end yet. (check : if currentTlDepth != lastTlDepth do failover.)
*
* <p>if: current NDC Depth < last.last NDC Depth We recursively do tl.end with Pop NDCStack and
* renew the last NDC depth till this condition is not satisfied.
*
* @param event
* @param message
* @param ndcDepth
* @param ndcStr
*/
private void record(LoggingEvent event, int ndcDepth, TimelineLifecycle lfc, String ndcStr) {
// TODO: how to figure out this part?
// condition 1. Timeline already started.
NdcContext ndcCtxt = getNdcContext(lfc);
NdcObj last = ndcCtxt.getNdcObj();
// if(last.tlDepth != getCurrentTlDepth(lfc)){
// //TODO: Timeline is operated between two LOG4J log commands, the stack information might be
// f****d up!
// /*
// * Should I allow user to mix log4j with native ZMonitor API?
// */
// }
String mesg = event.getRenderedMessage();
if (last == null) {
ndcCtxt.doRecord(createName(event, null), mesg, ndcDepth);
return;
}
if (ndcDepth > last.depth) {
ndcCtxt.doStart(createName(event, null), mesg, ndcStr, ndcDepth);
} else if (ndcDepth == last.depth) {
ndcCtxt.doRecord(createName(event, null), mesg, ndcDepth);
} else { // if( ndcDepth < last.depth )
if (ndcDepth == last.previous.depth) {
ndcCtxt.doEnd(createName(event, "L4J_END"), mesg);
} else if (ndcDepth > last.previous.depth) {
ndcCtxt.doRecord(createName(event, null), mesg, ndcDepth);
} else { // if(ndcDepth < last.previous.depth)
autoEnd(ndcCtxt);
record(event, ndcDepth, lfc, ndcStr); // recursive call...
return;
}
}
}
private ErrorEventStat convert(LoggingEvent loggingEvent) {
ErrorEventStat errorEventStat = new ErrorEventStat();
LocationInfo locationInformation = loggingEvent.getLocationInformation();
errorEventStat.setEmail(email);
errorEventStat.setClientVersion(getArtifactId());
errorEventStat.setOs(System.getProperty(SystemConstants.OS_NAME_PROP_KEY));
errorEventStat.setOsVersion(System.getProperty(SystemConstants.OS_VERSION_PROP_KEY));
errorEventStat.setJvm(System.getProperty(SystemConstants.JAVA_VERSION_PROP_KEY));
errorEventStat.setThreadName(loggingEvent.getThreadName());
errorEventStat.setMessage(loggingEvent.getRenderedMessage());
errorEventStat.setFileName(locationInformation.getFileName());
errorEventStat.setLineNumber(locationInformation.getLineNumber());
errorEventStat.setMethodName(locationInformation.getMethodName());
errorEventStat.setClassName(locationInformation.getClassName());
ThrowableInformation throwableInformation = loggingEvent.getThrowableInformation();
if (throwableInformation != null) {
errorEventStat.setStackTrace(throwableInformation.getThrowable().getMessage());
}
return errorEventStat;
}
protected void append(LoggingEvent event) {
Connection connection = null;
try {
connection = connectionSource.getConnection();
connection.setAutoCommit(false);
PreparedStatement insertStatement;
if (cnxSupportsGetGeneratedKeys) {
insertStatement = connection.prepareStatement(insertSQL, Statement.RETURN_GENERATED_KEYS);
} else {
insertStatement = connection.prepareStatement(insertSQL);
}
/* insertStatement.setLong(1, event.getSequenceNumber());*/
insertStatement.setLong(1, 0);
insertStatement.setLong(2, event.getTimeStamp());
insertStatement.setString(3, event.getRenderedMessage());
insertStatement.setString(4, event.getLoggerName());
insertStatement.setString(5, event.getLevel().toString());
insertStatement.setString(6, event.getNDC());
insertStatement.setString(7, event.getThreadName());
insertStatement.setShort(8, DBHelper.computeReferenceMask(event));
LocationInfo li;
if (event.locationInformationExists() || locationInfo) {
li = event.getLocationInformation();
} else {
li = LocationInfo.NA_LOCATION_INFO;
}
insertStatement.setString(9, li.getFileName());
insertStatement.setString(10, li.getClassName());
insertStatement.setString(11, li.getMethodName());
insertStatement.setString(12, li.getLineNumber());
int updateCount = insertStatement.executeUpdate();
if (updateCount != 1) {
LogLog.warn("Failed to insert loggingEvent");
}
ResultSet rs = null;
Statement idStatement = null;
boolean gotGeneratedKeys = false;
if (cnxSupportsGetGeneratedKeys) {
try {
rs = (ResultSet) GET_GENERATED_KEYS_METHOD.invoke(insertStatement, null);
gotGeneratedKeys = true;
} catch (InvocationTargetException ex) {
Throwable target = ex.getTargetException();
if (target instanceof SQLException) {
throw (SQLException) target;
}
throw ex;
} catch (IllegalAccessException ex) {
LogLog.warn("IllegalAccessException invoking PreparedStatement.getGeneratedKeys", ex);
}
}
if (!gotGeneratedKeys) {
insertStatement.close();
insertStatement = null;
idStatement = connection.createStatement();
idStatement.setMaxRows(1);
rs = idStatement.executeQuery(sqlDialect.getSelectInsertId());
}
// A ResultSet cursor is initially positioned before the first row; the
// first call to the method next makes the first row the current row
rs.next();
int eventId = rs.getInt(1);
rs.close();
// we no longer need the insertStatement
if (insertStatement != null) {
insertStatement.close();
insertStatement = null;
}
if (idStatement != null) {
idStatement.close();
idStatement = null;
}
Set propertiesKeys = event.getPropertyKeySet();
if (propertiesKeys.size() > 0) {
PreparedStatement insertPropertiesStatement =
connection.prepareStatement(insertPropertiesSQL);
for (Iterator i = propertiesKeys.iterator(); i.hasNext(); ) {
String key = (String) i.next();
String value = event.getProperty(key);
// LogLog.info("id " + eventId + ", key " + key + ", value " + value);
insertPropertiesStatement.setInt(1, eventId);
insertPropertiesStatement.setString(2, key);
insertPropertiesStatement.setString(3, value);
if (cnxSupportsBatchUpdates) {
insertPropertiesStatement.addBatch();
} else {
insertPropertiesStatement.execute();
}
}
if (cnxSupportsBatchUpdates) {
insertPropertiesStatement.executeBatch();
}
insertPropertiesStatement.close();
insertPropertiesStatement = null;
}
String[] strRep = event.getThrowableStrRep();
if (strRep != null) {
LogLog.debug("Logging an exception");
PreparedStatement insertExceptionStatement =
connection.prepareStatement(insertExceptionSQL);
for (short i = 0; i < strRep.length; i++) {
insertExceptionStatement.setInt(1, eventId);
insertExceptionStatement.setShort(2, i);
insertExceptionStatement.setString(3, strRep[i]);
if (cnxSupportsBatchUpdates) {
insertExceptionStatement.addBatch();
} else {
insertExceptionStatement.execute();
}
}
if (cnxSupportsBatchUpdates) {
insertExceptionStatement.executeBatch();
}
insertExceptionStatement.close();
insertExceptionStatement = null;
}
connection.commit();
} catch (Throwable sqle) {
LogLog.error("problem appending event", sqle);
} finally {
DBHelper.closeConnection(connection);
}
}
@Override
public void run() {
try {
RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
while (true) {
final Event event = events.take();
LoggingEvent logEvent = event.getEvent();
String name = logEvent.getLogger().getName();
Level level = logEvent.getLevel();
MessageProperties amqpProps = new MessageProperties();
amqpProps.setDeliveryMode(deliveryMode);
amqpProps.setContentType(contentType);
if (null != contentEncoding) {
amqpProps.setContentEncoding(contentEncoding);
}
amqpProps.setHeader(CATEGORY_NAME, name);
amqpProps.setHeader(CATEGORY_LEVEL, level.toString());
if (generateId) {
amqpProps.setMessageId(UUID.randomUUID().toString());
}
// Set applicationId, if we're using one
if (null != applicationId) {
amqpProps.setAppId(applicationId);
}
// Set timestamp
Calendar tstamp = Calendar.getInstance();
tstamp.setTimeInMillis(logEvent.getTimeStamp());
amqpProps.setTimestamp(tstamp.getTime());
// Copy properties in from MDC
@SuppressWarnings("rawtypes")
Map props = event.getProperties();
@SuppressWarnings("unchecked")
Set<Entry<?, ?>> entrySet = props.entrySet();
for (Entry<?, ?> entry : entrySet) {
amqpProps.setHeader(entry.getKey().toString(), entry.getValue());
}
LocationInfo locInfo = logEvent.getLocationInformation();
if (!"?".equals(locInfo.getClassName())) {
amqpProps.setHeader(
"location",
String.format(
"%s.%s()[%s]",
locInfo.getClassName(), locInfo.getMethodName(), locInfo.getLineNumber()));
}
StringBuilder msgBody;
String routingKey;
synchronized (layoutMutex) {
msgBody = new StringBuilder(layout.format(logEvent));
routingKey = routingKeyLayout.format(logEvent);
}
if (layout.ignoresThrowable() && null != logEvent.getThrowableInformation()) {
ThrowableInformation tinfo = logEvent.getThrowableInformation();
for (String line : tinfo.getThrowableStrRep()) {
msgBody.append(String.format("%s%n", line));
}
}
// Send a message
try {
Message message = null;
if (AmqpAppender.this.charset != null) {
try {
message =
new Message(msgBody.toString().getBytes(AmqpAppender.this.charset), amqpProps);
} catch (UnsupportedEncodingException e) {
/* fall back to default */
}
}
if (message == null) {
message =
new Message(
msgBody.toString().getBytes(), amqpProps); // NOSONAR (default charset)
}
message = postProcessMessageBeforeSend(message, event);
rabbitTemplate.send(exchangeName, routingKey, message);
} catch (AmqpException e) {
int retries = event.incrementRetries();
if (retries < maxSenderRetries) {
// Schedule a retry based on the number of times I've tried to re-send this
retryTimer.schedule(
new TimerTask() {
@Override
public void run() {
events.add(event);
}
},
(long) (Math.pow(retries, Math.log(retries)) * 1000));
} else {
errorHandler.error(
"Could not send log message "
+ logEvent.getRenderedMessage()
+ " after "
+ maxSenderRetries
+ " retries",
e,
ErrorCode.WRITE_FAILURE,
logEvent);
}
}
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
public static final GelfMessage makeMessage(LoggingEvent event, GelfMessageProvider provider) {
long timeStamp = Log4jVersionChecker.getTimeStamp(event);
Level level = event.getLevel();
String file = null;
String lineNumber = null;
if (provider.isIncludeLocation()) {
LocationInfo locationInformation = event.getLocationInformation();
file = locationInformation.getFileName();
lineNumber = locationInformation.getLineNumber();
}
String renderedMessage = event.getRenderedMessage();
String shortMessage;
if (renderedMessage == null) {
renderedMessage = "";
}
if (renderedMessage.length() > MAX_SHORT_MESSAGE_LENGTH) {
shortMessage = renderedMessage.substring(0, MAX_SHORT_MESSAGE_LENGTH - 1);
} else {
shortMessage = renderedMessage;
}
if (provider.isExtractStacktrace()) {
ThrowableInformation throwableInformation = event.getThrowableInformation();
if (throwableInformation != null) {
renderedMessage += "\n\r" + extractStacktrace(throwableInformation);
}
}
GelfMessage gelfMessage =
new GelfMessage(
shortMessage,
renderedMessage,
timeStamp,
String.valueOf(level.getSyslogEquivalent()),
lineNumber,
file);
if (provider.getOriginHost() != null) {
gelfMessage.setHost(provider.getOriginHost());
}
if (provider.getFacility() != null) {
gelfMessage.setFacility(provider.getFacility());
}
Map<String, String> fields = provider.getFields();
for (Map.Entry<String, String> entry : fields.entrySet()) {
if (entry.getKey().equals(ORIGIN_HOST_KEY) && gelfMessage.getHost() == null) {
gelfMessage.setHost(fields.get(ORIGIN_HOST_KEY));
} else {
gelfMessage.addField(entry.getKey(), entry.getValue());
}
}
if (provider.isAddExtendedInformation()) {
gelfMessage.addField(THREAD_NAME, event.getThreadName());
gelfMessage.addField(LOGGER_NAME, event.getLoggerName());
gelfMessage.addField(JAVA_TIMESTAMP, Long.toString(gelfMessage.getJavaTimestamp()));
// Get MDC and add a GELF field for each key/value pair
Map<String, Object> mdc = MDC.getContext();
if (mdc != null) {
for (Map.Entry<String, Object> entry : mdc.entrySet()) {
gelfMessage.addField(entry.getKey(), entry.getValue().toString());
}
}
// Get NDC and add a GELF field
String ndc = event.getNDC();
if (ndc != null) {
gelfMessage.addField(LOGGER_NDC, ndc);
}
}
return gelfMessage;
}
protected void append(LoggingEvent event) {
messages.add(event.getRenderedMessage());
}
/*(non-Javadoc)
* @see org.apache.log4j.AppenderSkeleton#append(org.apache.log4j.spi.LoggingEvent)
*/
protected void append(LoggingEvent event) {
String ndcStr = null;
int depth = -1;
{ // IMPORTANT: this section is something MUST be called!
ndcStr = event.getNDC();
depth = NDC.getDepth();
event.getThreadName();
// Get a copy of this thread's MDC.
event.getMDCCopy();
}
if (shallRecursionPrevented(this.getClass(), event.getLoggerName())
|| shallRecursionPrevented(ZMLog.class, event.getLoggerName())) return;
{ // IMPORTANT: this section is something MUST be called!
event.getRenderedMessage();
event.getThrowableStrRep();
/*
* SCENARIO:
* while tl!=started, we suppose to start a new tl.
* log4j shoulden't terminate other's tl, it can only terminate it's selves.
*
* depth=0, tl==started, controlBySelf [complete] this tl is reaching it's end, should be terminated.
* depth=0, tl==started, controlByOthers [recording] this tl is controlled by others, log4j is simply an interceptor, do recording.
*
* depth=0, tl!=started, controlBySelf [doNothing] because tl can only be started while depth>0.
* depth=0, tl!=started, controlByOthers [doNothing] because tl can only be started while depth>0.
*
* depth>0, tl==started, controlBySelf [recording] watch out the depth problem.
* depth>0, tl==started, controlByOthers [recording] watch out the depth problem.
*
* depth>0, tl!=started, controlBySelf [do Start]
* depth>0, tl!=started, controlByOthers [do Start]
*
*/
TimelineLifecycle lfc = ZMonitorManager.getInstance().getTimelineLifecycle();
String mesg = event.getRenderedMessage();
if (depth == 0) {
if (ZMonitor.isTimelineStarted()) {
if (isControlledBySelf(lfc)) {
complete(event, mesg, lfc);
} else {
record(event, depth, lfc, ndcStr);
}
}
// do nothing...
// tl.start must satisfy (depth > 0), otherwise there's no way for appender to know when to
// complete timeline.
} else {
if (ZMonitor.isTimelineStarted()) {
record(event, depth, lfc, ndcStr);
} else {
start(event, depth, lfc, ndcStr);
setControlledBySelf(lfc);
}
}
}
}
