public synchronized void flush() {
try {
int last = KettleLogStore.getLastBufferLineNr();
StringBuffer buffer =
KettleLogStore.getAppender().getBuffer(logChannelId, false, lastBufferLineNr, last);
logFileOutputStream.write(buffer.toString().getBytes());
lastBufferLineNr = last;
logFileOutputStream.flush();
} catch (Exception e) {
exception = new KettleException("There was an error logging to file '" + logFile + "'", e);
}
}
protected String getLogBuffer(
VariableSpace space, String logChannelId, LogStatus status, String limit) {
StringBuffer buffer = KettleLogStore.getAppender().getBuffer(logChannelId, true);
if (Const.isEmpty(limit)) {
String defaultLimit = space.getVariable(Const.KETTLE_LOG_SIZE_LIMIT, null);
if (!Const.isEmpty(defaultLimit)) {
limit = defaultLimit;
}
}
// See if we need to limit the amount of rows
//
int nrLines = Const.isEmpty(limit) ? -1 : Const.toInt(space.environmentSubstitute(limit), -1);
if (nrLines > 0) {
int start = buffer.length() - 1;
for (int i = 0; i < nrLines && start > 0; i++) {
start = buffer.lastIndexOf(Const.CR, start - 1);
}
if (start > 0) {
buffer.delete(0, start + Const.CR.length());
}
}
return buffer.append(Const.CR + status.getStatus().toUpperCase() + Const.CR).toString();
}
/**
* Create a new log channel file writer
*
* @param logChannelId The log channel (+children) to write to the log file
* @param logFile The logging file to write to
* @param appending set to true if you want to append to an existing file
* @param pollingInterval The polling interval in milliseconds.
* @throws KettleException in case the specified log file can't be created.
*/
public LogChannelFileWriter(
String logChannelId, FileObject logFile, boolean appending, int pollingInterval)
throws KettleException {
this.logChannelId = logChannelId;
this.logFile = logFile;
this.appending = appending;
this.pollingInterval = pollingInterval;
active = new AtomicBoolean(false);
lastBufferLineNr = KettleLogStore.getLastBufferLineNr();
try {
logFileOutputStream = KettleVFS.getOutputStream(logFile, appending);
} catch (IOException e) {
throw new KettleException(
"There was an error while trying to open file '" + logFile + "' for writing", e);
}
}
