Package org.apache.curator.framework.recipes.locks

Class ChildReaper

java.lang.Object

org.apache.curator.framework.recipes.locks.ChildReaper

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

@Deprecated
public class ChildReaper
extends java.lang.Object
implements java.io.Closeable

Deprecated.

Since 2.9.0 - Reaper/ChildReaper are no longer needed. Use CreateMode.CONTAINER. Also, all Curator recipes create container parents.

Utility to reap empty child nodes of a parent node. Periodically calls getChildren on the node and adds empty nodes to an internally managed Reaper

Constructor Summary

Constructors

Constructor	Description
ChildReaper(org.apache.curator.framework.CuratorFramework client, java.lang.String path, Reaper.Mode mode)	Deprecated.
ChildReaper(org.apache.curator.framework.CuratorFramework client, java.lang.String path, Reaper.Mode mode, int reapingThresholdMs)	Deprecated.
ChildReaper(org.apache.curator.framework.CuratorFramework client, java.lang.String path, Reaper.Mode mode, java.util.concurrent.ScheduledExecutorService executor, int reapingThresholdMs)	Deprecated.
ChildReaper(org.apache.curator.framework.CuratorFramework client, java.lang.String path, Reaper.Mode mode, java.util.concurrent.ScheduledExecutorService executor, int reapingThresholdMs, java.lang.String leaderPath)	Deprecated.
ChildReaper(org.apache.curator.framework.CuratorFramework client, java.lang.String path, Reaper.Mode mode, java.util.concurrent.ScheduledExecutorService executor, int reapingThresholdMs, java.lang.String leaderPath, java.util.Set<java.lang.String> lockSchema)	Deprecated.

Method Summary

Modifier and Type	Method	Description
ChildReaper	addPath(java.lang.String path)	Deprecated. Add a path to reap children from
void	close()	Deprecated.
static java.util.concurrent.ScheduledExecutorService	newExecutorService()	Deprecated.
boolean	removePath(java.lang.String path)	Deprecated. Remove a path from reaping
void	setMaxChildren(int maxChildren)	Deprecated. If a node has so many children that CuratorFramework.getChildren() will fail (due to jute.maxbuffer) it can cause connection instability.
void	start()	Deprecated. The reaper must be started
protected void	warnMaxChildren(java.lang.String path, org.apache.zookeeper.data.Stat stat)	Deprecated.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChildReaper

public ChildReaper(org.apache.curator.framework.CuratorFramework client,
                   java.lang.String path,
                   Reaper.Mode mode)

Deprecated.

Parameters:

client - the client

path - path to reap children from

mode - reaping mode

ChildReaper

public ChildReaper(org.apache.curator.framework.CuratorFramework client,
                   java.lang.String path,
                   Reaper.Mode mode,
                   int reapingThresholdMs)

Deprecated.

Parameters:

client - the client

path - path to reap children from

reapingThresholdMs - threshold in milliseconds that determines that a path can be deleted

mode - reaping mode

ChildReaper

public ChildReaper(org.apache.curator.framework.CuratorFramework client,
                   java.lang.String path,
                   Reaper.Mode mode,
                   java.util.concurrent.ScheduledExecutorService executor,
                   int reapingThresholdMs)

Deprecated.

Parameters:

client - the client

path - path to reap children from

executor - executor to use for background tasks

reapingThresholdMs - threshold in milliseconds that determines that a path can be deleted

mode - reaping mode

ChildReaper

public ChildReaper(org.apache.curator.framework.CuratorFramework client,
                   java.lang.String path,
                   Reaper.Mode mode,
                   java.util.concurrent.ScheduledExecutorService executor,
                   int reapingThresholdMs,
                   java.lang.String leaderPath)

Deprecated.

Parameters:

client - the client

path - path to reap children from

executor - executor to use for background tasks

reapingThresholdMs - threshold in milliseconds that determines that a path can be deleted

mode - reaping mode

leaderPath - if not null, uses a leader selection so that only 1 reaper is active in the cluster

ChildReaper

public ChildReaper(org.apache.curator.framework.CuratorFramework client,
                   java.lang.String path,
                   Reaper.Mode mode,
                   java.util.concurrent.ScheduledExecutorService executor,
                   int reapingThresholdMs,
                   java.lang.String leaderPath,
                   java.util.Set<java.lang.String> lockSchema)

Deprecated.

Parameters:

client - the client

path - path to reap children from

executor - executor to use for background tasks

reapingThresholdMs - threshold in milliseconds that determines that a path can be deleted

mode - reaping mode

leaderPath - if not null, uses a leader selection so that only 1 reaper is active in the cluster

lockSchema - a set of the possible subnodes of the children of path that must be reaped in addition to the child nodes

Method Detail

start

public void start()
           throws java.lang.Exception

Deprecated.

The reaper must be started

Throws:

java.lang.Exception - errors

close

public void close()
           throws java.io.IOException

Deprecated.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException

addPath

public ChildReaper addPath(java.lang.String path)

Deprecated.

Add a path to reap children from

Parameters:

path - the path

Returns:

this for chaining

removePath

public boolean removePath(java.lang.String path)

Deprecated.

Remove a path from reaping

Parameters:

path - the path

Returns:

true if the path existed and was removed

setMaxChildren

public void setMaxChildren(int maxChildren)

Deprecated.

If a node has so many children that CuratorFramework.getChildren() will fail (due to jute.maxbuffer) it can cause connection instability. Set the max number of children here to prevent the path from being queried in these cases. The number should usually be: average-node-name-length/1000000

Parameters:

maxChildren - max children

newExecutorService

public static java.util.concurrent.ScheduledExecutorService newExecutorService()

Deprecated.

warnMaxChildren

protected void warnMaxChildren(java.lang.String path,
                               org.apache.zookeeper.data.Stat stat)

Deprecated.