org.apache.zookeeper.server.admin

Class Commands.LastSnapshotCommand

java.lang.Object

org.apache.zookeeper.server.admin.CommandBase

org.apache.zookeeper.server.admin.Commands.LastSnapshotCommand

All Implemented Interfaces:

Command

Enclosing class:

Commands

public static class Commands.LastSnapshotCommand
extends CommandBase

Command returns information of the last snapshot that zookeeper server has finished saving to disk. During the time between the server starts up and it finishes saving its first snapshot, the command returns the zxid and last modified time of the snapshot file used for restoration at server startup. Returned map contains: - "zxid": String - "timestamp": Long

Constructor Summary

Constructors

Constructor and Description
LastSnapshotCommand()

Method Summary

Modifier and Type	Method and Description
CommandResponse	run(ZooKeeperServer zkServer, Map<String,String> kwargs) Run this command.

Methods inherited from class org.apache.zookeeper.server.admin.CommandBase

getDoc, getNames, getPrimaryName, initializeResponse, isServerRequired

Methods inherited from class java.lang.Object

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

Constructor Detail

LastSnapshotCommand

public LastSnapshotCommand()

Method Detail

run

public CommandResponse run(ZooKeeperServer zkServer,
                           Map<String,String> kwargs)

Description copied from interface: Command

Run this command. Commands take a ZooKeeperServer and String-valued keyword arguments and return a map containing any information constituting the response to the command. Commands are responsible for parsing keyword arguments and performing any error handling if necessary. Errors should be reported by setting the "error" entry of the returned map with an appropriate message rather than throwing an exception.

kwargs - keyword -> argument value mapping

Returns:

Map representing response to command containing at minimum: - "command" key containing the command's primary name - "error" key containing a String error message or null if no error