org.apache.oozie.service

Class XLogStreamingService

java.lang.Object

org.apache.oozie.service.XLogStreamingService

All Implemented Interfaces:

Service, Instrumentable

Direct Known Subclasses:

ZKXLogStreamingService

public class XLogStreamingService
extends java.lang.Object
implements Service, Instrumentable

Service that performs streaming of log files over Web Services if enabled in XLogService

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bufferLen
static java.lang.String	STREAM_BUFFER_LEN

Fields inherited from interface org.apache.oozie.service.Service

DEFAULT_LOCK_TIMEOUT, lockTimeout

Constructor Summary

Constructors

Constructor and Description
XLogStreamingService()

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy() Destroy the log streaming service.
int	getBufferLen()
java.lang.Class<? extends Service>	getInterface() Return the public interface for log streaming service.
void	init(Services services) Initialize the log streaming service.
void	instrument(Instrumentation instr) Instruments the log streaming service.
void	streamLog(XLogFilter filter, java.util.Date startTime, java.util.Date endTime, java.io.Writer writer, java.util.Map<java.lang.String,java.lang.String[]> params) Stream the log of a job.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

STREAM_BUFFER_LEN

public static final java.lang.String STREAM_BUFFER_LEN

See Also:

Constant Field Values

bufferLen

protected int bufferLen

Constructor Detail

XLogStreamingService

public XLogStreamingService()

Method Detail

init

public void init(Services services)
          throws ServiceException

Initialize the log streaming service.

Specified by:

init in interface Service

Parameters:

services - services instance.

Throws:

ServiceException - thrown if the log streaming service could not be initialized.

destroy

public void destroy()

Destroy the log streaming service.

Specified by:

destroy in interface Service

getInterface

public java.lang.Class<? extends Service> getInterface()

Return the public interface for log streaming service.

Specified by:

getInterface in interface Service

Returns:

XLogStreamingService.

instrument

public void instrument(Instrumentation instr)

Instruments the log streaming service.

Specified by:

instrument in interface Instrumentable

Parameters:

instr - instrumentation to use.

streamLog

public void streamLog(XLogFilter filter,
             java.util.Date startTime,
             java.util.Date endTime,
             java.io.Writer writer,
             java.util.Map<java.lang.String,java.lang.String[]> params)
               throws java.io.IOException

Stream the log of a job.

Parameters:

filter - log streamer filter.

startTime - start time for log events to filter.

endTime - end time for log events to filter.

writer - writer to stream the log to.

params - additional parameters from the request

Throws:

java.io.IOException - thrown if the log cannot be streamed.

getBufferLen

public int getBufferLen()