Package com.illumon.iris.utils

Class WriteableWorkspaceSnapshot

java.lang.Object

com.illumon.iris.db.util.WorkspaceDataSnapshot

com.illumon.iris.utils.WriteableWorkspaceSnapshot

public class WriteableWorkspaceSnapshot
extends WorkspaceDataSnapshot

Utility class to merge into DbInternal/WorkspaceDataSnapshot

Field Summary

Fields inherited from class com.illumon.iris.db.util.WorkspaceDataSnapshot

db, latestSnapshot, latestSnapshotDate, log, wsPartitions

Constructor Summary

Constructors

Constructor	Description
WriteableWorkspaceSnapshot(com.fishlib.io.logger.Logger log, Database db)

Method Summary

Modifier and Type	Method	Description
boolean	updateSnapshot()	compute a new keyframe and write it to persistent storage if possible,
void	writeSnapshot(com.fishlib.configuration.Configuration config, String snapshotDate, Table snapshot)	commit current keyframe to persistent storage if possible (able to write and partition doesn't exist yet)

Methods inherited from class com.illumon.iris.db.util.WorkspaceDataSnapshot

getWorkspaceUnfiltered, getWorkspaceUnfiltered, loadLatestSnapshot

Methods inherited from class java.lang.Object

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

Constructor Details

WriteableWorkspaceSnapshot

public WriteableWorkspaceSnapshot(@NotNull
 com.fishlib.io.logger.Logger log,
 @NotNull
 Database db)

Parameters:

log - a Logger

db - reference to the Database to use

Method Details

writeSnapshot

public void writeSnapshot(com.fishlib.configuration.Configuration config,
 String snapshotDate,
 Table snapshot)

commit current keyframe to persistent storage if possible (able to write and partition doesn't exist yet)

Parameters:

config - system Configuration ref

snapshotDate - string date used as Date partitioning key for new partition

snapshot - a Table containing the new workspace snapshot "keyframe" rows.

updateSnapshot

public boolean updateSnapshot()

compute a new keyframe and write it to persistent storage if possible,

Returns:

true on success, false on failure, usually due to policy checks.