}
ByteArrayOutputStream jsonOut = new ByteArrayOutputStream();
WritableByteChannel jsonOutChannel = Channels.newChannel(jsonOut);
numEventsRead = read.streamEvents(false, batchFetchSize, jsonOutChannel,
Encoding.JSON_PLAIN_VALUE, new SourceDbusFilter(srcIds)).getNumEventsStreamed();
totalRead += numEventsRead;
LOG.info("read for " + inputSrcIds + ": " + numEventsRead + " events");
byte[] jsonBytes = jsonOut.toByteArray();
if(jsonBytes.length == 0)