co.cask.cdap.logging.read

Interface LogReader

All Known Implementing Classes:

DistributedLogReader, FileLogReader, KafkaLogReader

public interface LogReader

Interface to read logs.

Method Summary

Methods

Modifier and Type	Method and Description
void	getLog(LoggingContext loggingContext, long fromTimeMs, long toTimeMs, Filter filter, Callback callback) Returns log events of a Flow or Map between given times.
void	getLogNext(LoggingContext loggingContext, ReadRange readRange, int maxEvents, Filter filter, Callback callback) Read log events of a Flow or Map Reduce program after a given offset.
void	getLogPrev(LoggingContext loggingContext, ReadRange readRange, int maxEvents, Filter filter, Callback callback) Read log events of a Flow or Map Reduce program before a given offset.

Method Detail

getLogNext

void getLogNext(LoggingContext loggingContext,
              ReadRange readRange,
              int maxEvents,
              Filter filter,
              Callback callback)

Read log events of a Flow or Map Reduce program after a given offset.

Parameters:

loggingContext - context to look up log events.

readRange - range for reading log events. Use ReadRange.LATEST to get the latest log events.

maxEvents - max log events to return.

filter - filter to select log events

callback - callback to handle the log events.

getLogPrev

void getLogPrev(LoggingContext loggingContext,
              ReadRange readRange,
              int maxEvents,
              Filter filter,
              Callback callback)

Read log events of a Flow or Map Reduce program before a given offset.

Parameters:

loggingContext - context to look up log events.

readRange - range for reading log events. Use ReadRange.LATEST to get the latest log events.

maxEvents - max log events to return.

filter - filter to select log events

callback - callback to handle the log events.

getLog

void getLog(LoggingContext loggingContext,
          long fromTimeMs,
          long toTimeMs,
          Filter filter,
          Callback callback)

Returns log events of a Flow or Map between given times.

Parameters:

loggingContext - context to look up log events.

fromTimeMs - start time.

toTimeMs - end time.

filter - filter to select log events

callback - Callback to handle the log events.