@Override
@AllowRemoteAccess
public List<SerializableLogEntry> getLog() {
List<SerializableLogEntry> entries = new LinkedList<SerializableLogEntry>();
@SuppressWarnings("unchecked")
Enumeration<LogEntry> retrievedEntries = osgiLogReaderService.getLog();
while (retrievedEntries.hasMoreElements()) {
LogEntry entry = retrievedEntries.nextElement();
if (entry.getLevel() != LogService.LOG_DEBUG) {
String exceptionString = "";
if (entry.getException() != null) {
exceptionString = entry.getException().toString();
}
entries.add(
entries.size(),
new SerializableLogEntry(
entry.getBundle().getSymbolicName(),
entry.getLevel(),
entry.getMessage().replaceAll("\n", SerializableLogEntry.RCE_SEPARATOR),
entry.getTime(),
exceptionString));
}
}
return entries;
}
@Override
public void logged(LogEntry entry) {
if (enabled)
doLog(
entry.getBundle(),
entry.getServiceReference(),
entry.getLevel(),
entry.getMessage(),
entry.getException());
}
@Override
public void logged(final LogEntry entry) {
if (entry.getLevel() == LogService.LOG_DEBUG) {
return;
}
orderedExecutionQueue.enqueue(
new Runnable() {
@Override
@TaskDescription(ASYNC_TASK_DESCRIPTION)
public void run() {
try {
String exceptionString = "";
if (entry.getException() != null) {
exceptionString = entry.getException().toString();
}
externalListener.logged(
new SerializableLogEntry(
entry.getBundle().getSymbolicName(),
entry.getLevel(),
entry.getMessage().replaceAll("\n", SerializableLogEntry.RCE_SEPARATOR),
entry.getTime(),
exceptionString));
} catch (RemoteOperationException e) {
final Log localLog = LogFactory.getLog(getClass());
localLog.error(
"Error while forwarding log event to listener "
+ "(delivery of log events to this receiver will be cancelled): "
+ e.toString());
// TODO >7.0.0: these lines should be equivalent, but aren't; investigate why -
// misc_ro, Nov 2015
// orderedExecutionQueue.cancelAsync();
throw new RuntimeException(
"Error while forwarding log event to listener"); // workaround to restore
// behavior
}
// the @TaskDescription is not forwarded by AsyncOrderedExecutionQueue, so count a
// stats event for monitoring - misc_ro
StatsCounter.count(
AsyncOrderedExecutionQueue.STATS_COUNTER_SHARED_CATEGORY_NAME,
ASYNC_TASK_DESCRIPTION);
}
});
}
@Override
public void logged(LogEntry entry) {
try {
// try to get a writer
Writer writer = getWriter();
if (writer == null) {
// silently fail, ELK service might just not be running
return;
}
// prepare a exception string if the log contains an exception
String exception =
entry.getException() == null ? "" : " " + entry.getException().getMessage();
// format time of log
Instant dateTimeInstant = new Date(entry.getTime()).toInstant();
LocalDateTime dateTime = LocalDateTime.ofInstant(dateTimeInstant, ZoneId.of("GMT"));
// concatenate log string
String log =
m_formatter.format(dateTime)
+ " "
+ m_hostname
+ " "
+ m_frameworkUUID
+ " "
+ entry.getBundle().getSymbolicName()
+ " "
+ getLogLevel(entry.getLevel())
+ " "
+ entry.getMessage()
+ exception;
// write log string to logstash
writer.write(log + "\n");
writer.flush();
} catch (Exception e) {
// silently fail, ELK service might just not be running
cleanup();
}
}