Package org.apache.druid.tasklogs

Interface TaskLogStreamer

All Known Subinterfaces:

TaskLogs

All Known Implementing Classes:

NoopTaskLogs, SwitchingTaskLogs

public interface TaskLogStreamer

Something that knows how to stream logs for tasks.

Method Summary

Modifier and Type	Method	Description
com.google.common.base.Optional<InputStream>	streamTaskLog(String taskid, long offset)	Stream log for a task.
default com.google.common.base.Optional<InputStream>	streamTaskReports(String taskid)
default com.google.common.base.Optional<InputStream>	streamTaskStatus(String taskid)

Method Details

streamTaskLog

com.google.common.base.Optional<InputStream> streamTaskLog(String taskid,
 long offset)
                                                    throws IOException

Stream log for a task.

Parameters:

offset - If zero, stream the entire log. If positive, attempt to read from this position onwards. If negative, attempt to read this many bytes from the end of the file (like tail -n).

Returns:

inputStream for this log, if available

Throws:

IOException

streamTaskReports

default com.google.common.base.Optional<InputStream> streamTaskReports(String taskid)
                                                                throws IOException

Throws:

IOException

streamTaskStatus

default com.google.common.base.Optional<InputStream> streamTaskStatus(String taskid)
                                                               throws IOException

Throws:

IOException