Examples with Callback co.cask.cdap.logging.read.Callback used on opensource projects

Example 1 with Callback

use of co.cask.cdap.logging.read.Callback in project cdap by caskdata.

the class AbstractLogHandler method doPrev.

protected void doPrev(HttpResponder responder, LoggingContext loggingContext, int maxEvents, String fromOffsetStr, boolean escape, String filterStr, @Nullable RunRecordMeta runRecord, String format, List<String> fieldsToSuppress) {
    try {
        Filter filter = FilterParser.parse(filterStr);
        Callback logCallback = getNextOrPrevLogsCallback(format, responder, fieldsToSuppress, escape);
        LogOffset logOffset = FormattedTextLogEvent.parseLogOffset(fromOffsetStr);
        ReadRange readRange = ReadRange.createToRange(logOffset);
        readRange = adjustReadRange(readRange, runRecord, true);
        try {
            logReader.getLogPrev(loggingContext, readRange, maxEvents, filter, logCallback);
        } catch (Exception ex) {
            LOG.debug("Exception while reading logs for logging context {}", loggingContext, ex);
        } finally {
            logCallback.close();
        }
    } catch (SecurityException e) {
        responder.sendStatus(HttpResponseStatus.UNAUTHORIZED);
    } catch (IllegalArgumentException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST, e.getMessage());
    }
}

Example 2 with Callback

use of co.cask.cdap.logging.read.Callback in project cdap by caskdata.

the class AbstractLogHandler method doNext.

protected void doNext(HttpResponder responder, LoggingContext loggingContext, int maxEvents, String fromOffsetStr, boolean escape, String filterStr, @Nullable RunRecordMeta runRecord, String format, List<String> fieldsToSuppress) {
    try {
        Filter filter = FilterParser.parse(filterStr);
        Callback logCallback = getNextOrPrevLogsCallback(format, responder, fieldsToSuppress, escape);
        LogOffset logOffset = FormattedTextLogEvent.parseLogOffset(fromOffsetStr);
        ReadRange readRange = ReadRange.createFromRange(logOffset);
        readRange = adjustReadRange(readRange, runRecord, true);
        try {
            logReader.getLogNext(loggingContext, readRange, maxEvents, filter, logCallback);
        } catch (Exception ex) {
            LOG.debug("Exception while reading logs for logging context {}", loggingContext, ex);
        } finally {
            logCallback.close();
        }
    } catch (SecurityException e) {
        responder.sendStatus(HttpResponseStatus.UNAUTHORIZED);
    } catch (IllegalArgumentException e) {
        responder.sendString(HttpResponseStatus.BAD_REQUEST, e.getMessage());
    }
}