Package org.apache.storm.utils

Class LocalState

java.lang.Object

org.apache.storm.utils.LocalState

public class LocalState
extends Object

A simple, durable, atomic K/V database. *Very inefficient*, should only be used for occasional reads/writes. Every read/write hits disk.

Field Summary

Fields

Modifier and Type	Field	Description
static final org.slf4j.Logger	LOG
static final String	LS_APPROVED_WORKERS
static final String	LS_ID
static final String	LS_LOCAL_ASSIGNMENTS
static final String	LS_TOPO_HISTORY
static final String	LS_WORKER_HEARTBEAT

Constructor Summary

Constructors

Constructor	Description
LocalState(String backingDir, boolean createBackingDir)

Method Summary

Modifier and Type	Method	Description
void	addTopologyHistory(LSTopoHistory lsTopoHistory)
void	cleanup(int keepVersions)
void	filterOldTopologies(long cutOffAge)	Remove topologies from local state which are older than cutOffAge.
org.apache.storm.thrift.TBase	get(String key)
Map<String,Integer>	getApprovedWorkers()
Map<Integer,LocalAssignment>	getLocalAssignmentsMap()
String	getSupervisorId()
List<LSTopoHistory>	getTopoHistoryList()
LSWorkerHeartbeat	getWorkerHeartBeat()
void	put(String key, org.apache.storm.thrift.TBase val)
void	put(String key, org.apache.storm.thrift.TBase val, boolean cleanup)
void	remove(String key)
void	remove(String key, boolean cleanup)
void	setApprovedWorkers(Map<String,Integer> approvedWorkers)
void	setLocalAssignmentsMap(Map<Integer,LocalAssignment> localAssignmentMap)
void	setSupervisorId(String supervisorId)
void	setWorkerHeartBeat(LSWorkerHeartbeat workerHeartBeat)
Map<String,org.apache.storm.thrift.TBase>	snapshot()

Methods inherited from class java.lang.Object

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

Field Details

LOG

public static final org.slf4j.Logger LOG

LS_WORKER_HEARTBEAT

public static final String LS_WORKER_HEARTBEAT

See Also:

• Constant Field Values

LS_ID

public static final String LS_ID

See Also:

• Constant Field Values

LS_LOCAL_ASSIGNMENTS

public static final String LS_LOCAL_ASSIGNMENTS

See Also:

• Constant Field Values

LS_APPROVED_WORKERS

public static final String LS_APPROVED_WORKERS

See Also:

• Constant Field Values

LS_TOPO_HISTORY

public static final String LS_TOPO_HISTORY

See Also:

• Constant Field Values

Constructor Details

LocalState

public LocalState(String backingDir,
 boolean createBackingDir)
           throws IOException

Throws:

IOException

Method Details

snapshot

public Map<String,org.apache.storm.thrift.TBase> snapshot()

get

public org.apache.storm.thrift.TBase get(String key)

put

public void put(String key,
 org.apache.storm.thrift.TBase val)

put

public void put(String key,
 org.apache.storm.thrift.TBase val,
 boolean cleanup)

remove

public void remove(String key)

remove

public void remove(String key,
 boolean cleanup)

cleanup

public void cleanup(int keepVersions)
             throws IOException

Throws:

IOException

getTopoHistoryList

public List<LSTopoHistory> getTopoHistoryList()

filterOldTopologies

public void filterOldTopologies(long cutOffAge)

Remove topologies from local state which are older than cutOffAge.

addTopologyHistory

public void addTopologyHistory(LSTopoHistory lsTopoHistory)

getSupervisorId

public String getSupervisorId()

setSupervisorId

public void setSupervisorId(String supervisorId)

getApprovedWorkers

public Map<String,Integer> getApprovedWorkers()

setApprovedWorkers

public void setApprovedWorkers(Map<String,Integer> approvedWorkers)

getWorkerHeartBeat

public LSWorkerHeartbeat getWorkerHeartBeat()

setWorkerHeartBeat

public void setWorkerHeartBeat(LSWorkerHeartbeat workerHeartBeat)

getLocalAssignmentsMap

public Map<Integer,LocalAssignment> getLocalAssignmentsMap()

setLocalAssignmentsMap

public void setLocalAssignmentsMap(Map<Integer,LocalAssignment> localAssignmentMap)