Package com.illumon.iris.db.v2.replay

Class ReplayClient

java.lang.Object

com.illumon.iris.db.v2.replay.ReplayClient

All Implemented Interfaces:

ReplayerInterface

public class ReplayClient
extends Object
implements ReplayerInterface

Constructor Summary

Constructors

Constructor	Description
ReplayClient(RemoteDatabase remoteDatabase, DBDateTime time, DBDateTime endTime, long increment, boolean dataDriven)

Method Summary

Modifier and Type	Method	Description
DBDateTime	currentTime()	Simulated time.
ReplayerHandle	getHandle()	Gets a handle to the replayer.
boolean	isDone()	Has the replayer finished replaying all data.
Table	replay(Table dataSource, String timeColumn)	Prepares a historical table for replaying.
Table	replayGrouped(Table dataSource, String timeColumn, String groupColumn)	Prepares a grouped historical table for replaying.
Table	replayGroupedLastBy(Table dataSource, String timeColumn, String groupColumn)
Table	replayGroupedLastBy(Table dataSource, String timeColumn, String[] groupColumn)	Prepares a grouped historical table for replaying as a last-by table.
void	schedule(TimerTask flushTask, long minute, long minute1)	Schedule a task to execute.
void	setTime(long updatedTime)	Sets the current replay time.
void	shutdown()	Shuts down the replayer.
void	start()	Starts replaying data.
void	waitDone(long maxTimeMillis)	Wait a specified interval for the replayer to complete.

Methods inherited from class java.lang.Object

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

Constructor Details

ReplayClient

public ReplayClient(RemoteDatabase remoteDatabase,
 DBDateTime time,
 DBDateTime endTime,
 long increment,
 boolean dataDriven)
             throws IOException

Throws:

IOException

Method Details

start

public void start()
           throws IOException

Description copied from interface: ReplayerInterface

Starts replaying data.

Specified by:

start in interface ReplayerInterface

Throws:

IOException

currentTime

public DBDateTime currentTime()
                       throws IOException

Description copied from interface: ReplayerInterface

Simulated time.

Specified by:

currentTime in interface ReplayerInterface

Returns:

simulated time.

Throws:

IOException

replay

public Table replay(Table dataSource,
 String timeColumn)
             throws IOException

Description copied from interface: ReplayerInterface

Prepares a historical table for replaying.

Specified by:

replay in interface ReplayerInterface

Parameters:

dataSource - historical table to replay

timeColumn - column in the table containing timestamps

Returns:

dynamic, replayed version of the table.

Throws:

IOException

replayGrouped

public Table replayGrouped(Table dataSource,
 String timeColumn,
 String groupColumn)
                    throws IOException

Description copied from interface: ReplayerInterface

Prepares a grouped historical table for replaying. This method can be faster than the ungrouped replay, but the performance increase comes with a cost. Within a group, the data ordering is maintained. Between groups, data ordering is not maintained for a time interval.

Specified by:

replayGrouped in interface ReplayerInterface

Parameters:

dataSource - historical table to replay

timeColumn - column in the table containing timestamps

Returns:

dynamic, replayed version of the table.

Throws:

IOException

replayGroupedLastBy

public Table replayGroupedLastBy(Table dataSource,
 String timeColumn,
 String[] groupColumn)
                          throws IOException

Description copied from interface: ReplayerInterface

Prepares a grouped historical table for replaying as a last-by table.

Specified by:

replayGroupedLastBy in interface ReplayerInterface

Parameters:

dataSource - historical table to replay

timeColumn - column in the table containing timestamps

groupColumn - columns used as the key in computing last-by

Returns:

dynamic, replayed version of the last-by table.

Throws:

IOException

getHandle

public ReplayerHandle getHandle()

Description copied from interface: ReplayerInterface

Gets a handle to the replayer.

Specified by:

getHandle in interface ReplayerInterface

Returns:

handle to the replayer.

replayGroupedLastBy

public Table replayGroupedLastBy(Table dataSource,
 String timeColumn,
 String groupColumn)
                          throws IOException

Throws:

IOException

shutdown

public void shutdown()
              throws IOException

Description copied from interface: ReplayerInterface

Shuts down the replayer.

Specified by:

shutdown in interface ReplayerInterface

Throws:

IOException - problem shutting down the replayer.

waitDone

public void waitDone(long maxTimeMillis)
              throws IOException

Description copied from interface: ReplayerInterface

Wait a specified interval for the replayer to complete. If the replayer has not completed by the end of the interval, the method returns.

Specified by:

waitDone in interface ReplayerInterface

Parameters:

maxTimeMillis - maximum number of milliseconds to wait.

Throws:

IOException - problems encountered

isDone

public boolean isDone()
               throws IOException

Description copied from interface: ReplayerInterface

Has the replayer finished replaying all data.

Specified by:

isDone in interface ReplayerInterface

Returns:

true if the replayer has finished replaying all data; false otherwise.

Throws:

IOException

setTime

public void setTime(long updatedTime)

Description copied from interface: ReplayerInterface

Sets the current replay time.

Specified by:

setTime in interface ReplayerInterface

Parameters:

updatedTime - new replay time.

schedule

public void schedule(TimerTask flushTask,
 long minute,
 long minute1)

Description copied from interface: ReplayerInterface

Schedule a task to execute.

Specified by:

schedule in interface ReplayerInterface

Parameters:

flushTask - task to execute

minute - delay in milliseconds before first executing the task

minute1 - frequency in milliseconds to execute the task.