NodeImpl (jraft-core 1.3.8 1.3.8 API)

java.lang.Object
- com.alipay.sofa.jraft.core.NodeImpl

所有已实现的接口:

Lifecycle<NodeOptions>, Node, RaftServerService, Describer
```
public class NodeImpl
extends Object
implements Node, RaftServerService
```
The raft replica node implementation.

作者:

boyan (boyan@alibaba-inc.com) 2018-Apr-03 4:26:51 PM

嵌套类概要
- 从接口继承的嵌套类/接口 com.alipay.sofa.jraft.util.Describer
  Describer.DefaultPrinter, Describer.Printer

字段概要

字段
限定符和类型字段和说明

static AtomicInteger GLOBAL_NUM_NODES

protected Lock readLock

static RaftTimerFactory TIMER_FACTORY

protected Lock writeLock

字段
限定符和类型	字段和说明
`static AtomicInteger`	`GLOBAL_NUM_NODES`
`protected Lock`	`readLock`
`static RaftTimerFactory`	`TIMER_FACTORY`
`protected Lock`	`writeLock`

构造器概要

构造器
构造器和说明

NodeImpl()

NodeImpl(String groupId, PeerId serverId)

构造器
构造器和说明
`NodeImpl()`
`NodeImpl(String groupId, PeerId serverId)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`addLearners(List<PeerId> learners, Closure done)` Add some new learners to the raft group. done.run() will be invoked after this operation finishes, describing the detailed result.
`void`	`addPeer(PeerId peer, Closure done)` Add a new peer to the raft group. done.run() would be invoked after this operation finishes, describing the detailed result.
`void`	`addReplicatorStateListener(Replicator.ReplicatorStateListener replicatorStateListener)` SOFAJRaft users can implement the ReplicatorStateListener interface by themselves.
`void`	`apply(Task task)` [Thread-safe and wait-free] Apply task to the replicated-state-machine About the ownership: \|task.data\|: for the performance consideration, we will take away the content.
`boolean`	`bootstrap(BootstrapOptions opts)`
`void`	`changePeers(Configuration newPeers, Closure done)` Change the configuration of the raft group to \|newPeers\| , done.un() would be invoked after this operation finishes, describing the detailed result.
`void`	`clearReplicatorStateListeners()` Remove all the ReplicatorStateListeners which have been added by users.
`void`	`describe(Describer.Printer out)`
`Configuration`	`getCurrentConf()` Retrieve current configuration this node seen so far.
`String`	`getGroupId()` Get the raft group id.
`PeerId`	`getLeaderId()` Get the leader peer id for redirect, null if absent.
`NodeId`	`getNodeId()` Get current node id.
`NodeMetrics`	`getNodeMetrics()` Returns the node metrics.
`State`	`getNodeState()` Get the node's state.
`int`	`getNodeTargetPriority()` Get the node's target election priority value.
`NodeOptions`	`getOptions()` Get the node options.
`RaftOptions`	`getRaftOptions()` Get the raft options
`List<Replicator.ReplicatorStateListener>`	`getReplicatorStatueListeners()` Get the ReplicatorStateListeners which have been added by users.
`RaftClientService`	`getRpcService()`
`PeerId`	`getServerId()`
`JRaftServiceFactory`	`getServiceFactory()` Returns the JRaft service factory for current node.
`Scheduler`	`getTimerManager()`
`com.google.protobuf.Message`	`handleAppendEntriesRequest(RpcRequests.AppendEntriesRequest request, RpcRequestClosure done)` Handle append-entries request, return response message or called done.run() with response.
`com.google.protobuf.Message`	`handleInstallSnapshot(RpcRequests.InstallSnapshotRequest request, RpcRequestClosure done)` Handle install-snapshot request, return response message or called done.run() with response.
`com.google.protobuf.Message`	`handlePreVoteRequest(RpcRequests.RequestVoteRequest request)` Handle pre-vote request.
`void`	`handlePreVoteResponse(PeerId peerId, long term, RpcRequests.RequestVoteResponse response)`
`void`	`handleReadIndexRequest(RpcRequests.ReadIndexRequest request, RpcResponseClosure<RpcRequests.ReadIndexResponse> done)` Handle read index request.
`com.google.protobuf.Message`	`handleRequestVoteRequest(RpcRequests.RequestVoteRequest request)` Handle request-vote request.
`void`	`handleRequestVoteResponse(PeerId peerId, long term, RpcRequests.RequestVoteResponse response)`
`com.google.protobuf.Message`	`handleTimeoutNowRequest(RpcRequests.TimeoutNowRequest request, RpcRequestClosure done)` Handle time-out-now request, return response message or called done.run() with response.
`boolean`	`init(NodeOptions opts)` Initialize the service.
`boolean`	`isLeader()` Returns true when the node is leader.
`boolean`	`isLeader(boolean blocking)` Returns true when the node is leader.
`void`	`join()` Block the thread until the node is successfully stopped.
`List<PeerId>`	`listAliveLearners()` List all alive learners of this raft group, only leader returns.
`List<PeerId>`	`listAlivePeers()` List all alive peers of this raft group, only leader returns.
`List<PeerId>`	`listLearners()` List all learners of this raft group, only leader returns.
`List<PeerId>`	`listPeers()` List peers of this raft group, only leader returns.
`void`	`onConfigurationChangeDone(long term)`
`void`	`onError(RaftException error)`
`UserLog`	`readCommittedUserLog(long index)` Read the first committed user log from the given index.
`void`	`readIndex(byte[] requestContext, ReadIndexClosure done)` [Thread-safe and wait-free] Starts a linearizable read-only query request with request context(optional, such as request id etc.) and closure.
`void`	`removeLearners(List<PeerId> learners, Closure done)` Remove some learners from the raft group. done.run() will be invoked after this operation finishes, describing the detailed result.
`void`	`removePeer(PeerId peer, Closure done)` Remove the peer from the raft group. done.run() would be invoked after operation finishes, describing the detailed result.
`void`	`removeReplicatorStateListener(Replicator.ReplicatorStateListener replicatorStateListener)` End User can remove their implement the ReplicatorStateListener interface by themselves.
`void`	`resetElectionTimeoutMs(int electionTimeoutMs)` Reset the election_timeout for the every node.
`void`	`resetLearners(List<PeerId> learners, Closure done)` Reset learners in the raft group. done.run() will be invoked after this operation finishes, describing the detailed result.
`Status`	`resetPeers(Configuration newPeers)` Reset the configuration of this node individually, without any replication to other peers before this node becomes the leader.
`void`	`shutdown()` Dispose the resources for service.
`void`	`shutdown(Closure done)` Shutdown local replica node.
`void`	`snapshot(Closure done)` Start a snapshot immediately if possible. done.run() would be invoked when the snapshot finishes, describing the detailed result.
`String`	`toString()`
`Status`	`transferLeadershipTo(PeerId peer)` Try transferring leadership to \|peer\|.
`void`	`updateConfigurationAfterInstallingSnapshot()`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - TIMER_FACTORY
```
public static final RaftTimerFactory TIMER_FACTORY
```
  - GLOBAL_NUM_NODES
```
public static final AtomicInteger GLOBAL_NUM_NODES
```
  - writeLock
```
protected final Lock writeLock
```
  - readLock
```
protected final Lock readLock
```
- 构造器详细资料
  - NodeImpl
```
public NodeImpl()
```
  - NodeImpl
```
public NodeImpl(String groupId,
                PeerId serverId)
```
- 方法详细资料
  - bootstrap
```
public boolean bootstrap(BootstrapOptions opts)
                  throws InterruptedException
```
    抛出:
    
    InterruptedException
  - init
```
public boolean init(NodeOptions opts)
```
    从接口复制的说明: Lifecycle
    
    Initialize the service.
    
    指定者:
    
    init 在接口中 Lifecycle<NodeOptions>
    
    返回:
    
    true when successes.
  - getNodeMetrics
```
public NodeMetrics getNodeMetrics()
```
    Returns the node metrics.
    
    指定者:
    
    getNodeMetrics 在接口中 Node
    
    返回:
    
    returns metrics of current node.
  - getServiceFactory
```
public JRaftServiceFactory getServiceFactory()
```
    Returns the JRaft service factory for current node.
    
    返回:
    
    the service factory
    
    从以下版本开始:
    
    1.2.6
  - readIndex
```
public void readIndex(byte[] requestContext,
                      ReadIndexClosure done)
```
    从接口复制的说明: Node
    
    [Thread-safe and wait-free] Starts a linearizable read-only query request with request context(optional, such as request id etc.) and closure. The closure will be called when the request is completed, and user can read data from state machine if the result status is OK.
    
    指定者:
    
    readIndex 在接口中 Node
    
    参数:
    
    requestContext - the context of request
    
    done - callback
  - handleReadIndexRequest
```
public void handleReadIndexRequest(RpcRequests.ReadIndexRequest request,
                                   RpcResponseClosure<RpcRequests.ReadIndexResponse> done)
```
    Handle read index request.
    
    指定者:
    
    handleReadIndexRequest 在接口中 RaftServerService
    
    参数:
    
    request - data of the readIndex read
    
    done - callback
  - apply
```
public void apply(Task task)
```
    从接口复制的说明: Node
    
    [Thread-safe and wait-free] Apply task to the replicated-state-machine About the ownership: |task.data|: for the performance consideration, we will take away the content. If you want keep the content, copy it before call this function |task.done|: If the data is successfully committed to the raft group. We will pass the ownership to #StateMachine.onApply(Iterator). Otherwise we will specify the error and call it.
    
    指定者:
    
    apply 在接口中 Node
    
    参数:
    
    task - task to apply
  - handlePreVoteRequest
```
public com.google.protobuf.Message handlePreVoteRequest(RpcRequests.RequestVoteRequest request)
```
    从接口复制的说明: RaftServerService
    
    Handle pre-vote request.
    
    指定者:
    
    handlePreVoteRequest 在接口中 RaftServerService
    
    参数:
    
    request - data of the pre vote
    
    返回:
    
    the response message
  - handleRequestVoteRequest
```
public com.google.protobuf.Message handleRequestVoteRequest(RpcRequests.RequestVoteRequest request)
```
    从接口复制的说明: RaftServerService
    
    Handle request-vote request.
    
    指定者:
    
    handleRequestVoteRequest 在接口中 RaftServerService
    
    参数:
    
    request - data of the vote
    
    返回:
    
    the response message
  - handleAppendEntriesRequest
```
public com.google.protobuf.Message handleAppendEntriesRequest(RpcRequests.AppendEntriesRequest request,
                                                              RpcRequestClosure done)
```
    从接口复制的说明: RaftServerService
    
    Handle append-entries request, return response message or called done.run() with response.
    
    指定者:
    
    handleAppendEntriesRequest 在接口中 RaftServerService
    
    参数:
    
    request - data of the entries to append
    
    done - callback
    
    返回:
    
    the response message
  - getOptions
```
public NodeOptions getOptions()
```
    从接口复制的说明: Node
    
    Get the node options.
    
    指定者:
    
    getOptions 在接口中 Node
  - getTimerManager
```
public Scheduler getTimerManager()
```
  - getRaftOptions
```
public RaftOptions getRaftOptions()
```
    从接口复制的说明: Node
    
    Get the raft options
    
    指定者:
    
    getRaftOptions 在接口中 Node
  - shutdown
```
public void shutdown()
```
    从接口复制的说明: Lifecycle
    
    Dispose the resources for service.
    
    指定者:
    
    shutdown 在接口中 Lifecycle<NodeOptions>
  - onConfigurationChangeDone
```
public void onConfigurationChangeDone(long term)
```
  - getLeaderId
```
public PeerId getLeaderId()
```
    从接口复制的说明: Node
    
    Get the leader peer id for redirect, null if absent.
    
    指定者:
    
    getLeaderId 在接口中 Node
  - getGroupId
```
public String getGroupId()
```
    从接口复制的说明: Node
    
    Get the raft group id.
    
    指定者:
    
    getGroupId 在接口中 Node
  - getServerId
```
public PeerId getServerId()
```
  - getNodeId
```
public NodeId getNodeId()
```
    从接口复制的说明: Node
    
    Get current node id.
    
    指定者:
    
    getNodeId 在接口中 Node
  - getRpcService
```
public RaftClientService getRpcService()
```
  - onError
```
public void onError(RaftException error)
```
  - handleRequestVoteResponse
```
public void handleRequestVoteResponse(PeerId peerId,
                                      long term,
                                      RpcRequests.RequestVoteResponse response)
```
  - handlePreVoteResponse
```
public void handlePreVoteResponse(PeerId peerId,
                                  long term,
                                  RpcRequests.RequestVoteResponse response)
```
  - isLeader
```
public boolean isLeader()
```
    从接口复制的说明: Node
    
    Returns true when the node is leader.
    
    指定者:
    
    isLeader 在接口中 Node
  - isLeader
```
public boolean isLeader(boolean blocking)
```
    从接口复制的说明: Node
    
    Returns true when the node is leader.
    
    指定者:
    
    isLeader 在接口中 Node
    
    参数:
    
    blocking - if true, will be blocked until the node finish it's state change
  - shutdown
```
public void shutdown(Closure done)
```
    从接口复制的说明: Node
    
    Shutdown local replica node.
    
    指定者:
    
    shutdown 在接口中 Node
    
    参数:
    
    done - callback
  - join
```
public void join()
          throws InterruptedException
```
    从接口复制的说明: Node
    
    Block the thread until the node is successfully stopped.
    
    指定者:
    
    join 在接口中 Node
    
    抛出:
    
    InterruptedException - if the current thread is interrupted while waiting
  - getCurrentConf
```
public Configuration getCurrentConf()
```
    Retrieve current configuration this node seen so far. It's not a reliable way to retrieve cluster peers info, you should use listPeers() instead.
    
    返回:
    
    current configuration.
    
    从以下版本开始:
    
    1.0.3
  - listPeers
```
public List<PeerId> listPeers()
```
    从接口复制的说明: Node
    
    List peers of this raft group, only leader returns. [NOTE] when list_peers concurrency with Node.addPeer(PeerId, Closure)/Node.removePeer(PeerId, Closure), maybe return peers is staled. Because Node.addPeer(PeerId, Closure)/Node.removePeer(PeerId, Closure) immediately modify configuration in memory
    
    指定者:
    
    listPeers 在接口中 Node
    
    返回:
    
    the peer list
  - listAlivePeers
```
public List<PeerId> listAlivePeers()
```
    从接口复制的说明: Node
    
    List all alive peers of this raft group, only leader returns.
    [NOTE] list_alive_peers is just a transient data (snapshot) and a short-term loss of response by the follower will cause it to temporarily not exist in this list.
    
    指定者:
    
    listAlivePeers 在接口中 Node
    
    返回:
    
    the alive peer list
  - listLearners
```
public List<PeerId> listLearners()
```
    从接口复制的说明: Node
    
    List all learners of this raft group, only leader returns.
    [NOTE] when listLearners concurrency with Node.addLearners(List, Closure)/Node.removeLearners(List, Closure)/Node.resetLearners(List, Closure), maybe return peers is staled. Because Node.addLearners(List, Closure)/Node.removeLearners(List, Closure)/Node.resetLearners(List, Closure) immediately modify configuration in memory
    
    指定者:
    
    listLearners 在接口中 Node
    
    返回:
    
    the learners set
  - listAliveLearners
```
public List<PeerId> listAliveLearners()
```
    从接口复制的说明: Node
    
    List all alive learners of this raft group, only leader returns.
    [NOTE] when listAliveLearners concurrency with Node.addLearners(List, Closure)/Node.removeLearners(List, Closure)/Node.resetLearners(List, Closure), maybe return peers is staled. Because Node.addLearners(List, Closure)/Node.removeLearners(List, Closure)/Node.resetLearners(List, Closure) immediately modify configuration in memory
    
    指定者:
    
    listAliveLearners 在接口中 Node
    
    返回:
    
    the alive learners set
  - addPeer
```
public void addPeer(PeerId peer,
                    Closure done)
```
    从接口复制的说明: Node
    
    Add a new peer to the raft group. done.run() would be invoked after this operation finishes, describing the detailed result.
    
    指定者:
    
    addPeer 在接口中 Node
    
    参数:
    
    peer - peer to add
    
    done - callback
  - removePeer
```
public void removePeer(PeerId peer,
                       Closure done)
```
    从接口复制的说明: Node
    
    Remove the peer from the raft group. done.run() would be invoked after operation finishes, describing the detailed result.
    
    指定者:
    
    removePeer 在接口中 Node
    
    参数:
    
    peer - peer to remove
    
    done - callback
  - changePeers
```
public void changePeers(Configuration newPeers,
                        Closure done)
```
    从接口复制的说明: Node
    
    Change the configuration of the raft group to |newPeers| , done.un() would be invoked after this operation finishes, describing the detailed result.
    
    指定者:
    
    changePeers 在接口中 Node
    
    参数:
    
    newPeers - new peers to change
    
    done - callback
  - resetPeers
```
public Status resetPeers(Configuration newPeers)
```
    从接口复制的说明: Node
    
    Reset the configuration of this node individually, without any replication to other peers before this node becomes the leader. This function is supposed to be invoked when the majority of the replication group are dead and you'd like to revive the service in the consideration of availability. Notice that neither consistency nor consensus are guaranteed in this case, BE CAREFULE when dealing with this method.
    
    指定者:
    
    resetPeers 在接口中 Node
    
    参数:
    
    newPeers - new peers
  - addLearners
```
public void addLearners(List<PeerId> learners,
                        Closure done)
```
    从接口复制的说明: Node
    
    Add some new learners to the raft group. done.run() will be invoked after this operation finishes, describing the detailed result.
    
    指定者:
    
    addLearners 在接口中 Node
    
    参数:
    
    learners - learners to add
    
    done - callback
  - removeLearners
```
public void removeLearners(List<PeerId> learners,
                           Closure done)
```
    从接口复制的说明: Node
    
    Remove some learners from the raft group. done.run() will be invoked after this operation finishes, describing the detailed result.
    
    指定者:
    
    removeLearners 在接口中 Node
    
    参数:
    
    learners - learners to remove
    
    done - callback
  - resetLearners
```
public void resetLearners(List<PeerId> learners,
                          Closure done)
```
    从接口复制的说明: Node
    
    Reset learners in the raft group. done.run() will be invoked after this operation finishes, describing the detailed result.
    
    指定者:
    
    resetLearners 在接口中 Node
    
    参数:
    
    learners - learners to set
    
    done - callback
  - snapshot
```
public void snapshot(Closure done)
```
    从接口复制的说明: Node
    
    Start a snapshot immediately if possible. done.run() would be invoked when the snapshot finishes, describing the detailed result.
    
    指定者:
    
    snapshot 在接口中 Node
    
    参数:
    
    done - callback
  - resetElectionTimeoutMs
```
public void resetElectionTimeoutMs(int electionTimeoutMs)
```
    从接口复制的说明: Node
    
    Reset the election_timeout for the every node.
    
    指定者:
    
    resetElectionTimeoutMs 在接口中 Node
    
    参数:
    
    electionTimeoutMs - the timeout millis of election
  - transferLeadershipTo
```
public Status transferLeadershipTo(PeerId peer)
```
    从接口复制的说明: Node
    
    Try transferring leadership to |peer|. If peer is ANY_PEER, a proper follower will be chosen as the leader for the next term. Returns 0 on success, -1 otherwise.
    
    指定者:
    
    transferLeadershipTo 在接口中 Node
    
    参数:
    
    peer - the target peer of new leader
    
    返回:
    
    operation status
  - handleTimeoutNowRequest
```
public com.google.protobuf.Message handleTimeoutNowRequest(RpcRequests.TimeoutNowRequest request,
                                                           RpcRequestClosure done)
```
    从接口复制的说明: RaftServerService
    
    Handle time-out-now request, return response message or called done.run() with response.
    
    指定者:
    
    handleTimeoutNowRequest 在接口中 RaftServerService
    
    参数:
    
    request - data of the timeout now request
    
    done - callback
    
    返回:
    
    the response message
  - handleInstallSnapshot
```
public com.google.protobuf.Message handleInstallSnapshot(RpcRequests.InstallSnapshotRequest request,
                                                         RpcRequestClosure done)
```
    从接口复制的说明: RaftServerService
    
    Handle install-snapshot request, return response message or called done.run() with response.
    
    指定者:
    
    handleInstallSnapshot 在接口中 RaftServerService
    
    参数:
    
    request - data of the install snapshot request
    
    done - callback
    
    返回:
    
    the response message
  - updateConfigurationAfterInstallingSnapshot
```
public void updateConfigurationAfterInstallingSnapshot()
```
  - readCommittedUserLog
```
public UserLog readCommittedUserLog(long index)
```
    从接口复制的说明: Node
    
    Read the first committed user log from the given index. Return OK on success and user_log is assigned with the very data. Be awared that the user_log may be not the exact log at the given index, but the first available user log from the given index to lastCommittedIndex. Otherwise, appropriate errors are returned: - return ELOGDELETED when the log has been deleted; - return ENOMOREUSERLOG when we can't get a user log even reaching lastCommittedIndex. [NOTE] in consideration of safety, we use lastAppliedIndex instead of lastCommittedIndex in code implementation.
    
    指定者:
    
    readCommittedUserLog 在接口中 Node
    
    参数:
    
    index - log index
    
    返回:
    
    user log entry
  - addReplicatorStateListener
```
public void addReplicatorStateListener(Replicator.ReplicatorStateListener replicatorStateListener)
```
    从接口复制的说明: Node
    
    SOFAJRaft users can implement the ReplicatorStateListener interface by themselves. So users can do their own logical operator in this listener when replicator created, destroyed or had some errors.
    
    指定者:
    
    addReplicatorStateListener 在接口中 Node
    
    参数:
    
    replicatorStateListener - added ReplicatorStateListener which is implemented by users.
  - removeReplicatorStateListener
```
public void removeReplicatorStateListener(Replicator.ReplicatorStateListener replicatorStateListener)
```
    从接口复制的说明: Node
    
    End User can remove their implement the ReplicatorStateListener interface by themselves.
    
    指定者:
    
    removeReplicatorStateListener 在接口中 Node
    
    参数:
    
    replicatorStateListener - need to remove the ReplicatorStateListener which has been added by users.
  - clearReplicatorStateListeners
```
public void clearReplicatorStateListeners()
```
    从接口复制的说明: Node
    
    Remove all the ReplicatorStateListeners which have been added by users.
    
    指定者:
    
    clearReplicatorStateListeners 在接口中 Node
  - getReplicatorStatueListeners
```
public List<Replicator.ReplicatorStateListener> getReplicatorStatueListeners()
```
    从接口复制的说明: Node
    
    Get the ReplicatorStateListeners which have been added by users.
    
    指定者:
    
    getReplicatorStatueListeners 在接口中 Node
    
    返回:
    
    node's replicatorStatueListeners which have been added by users.
  - getNodeTargetPriority
```
public int getNodeTargetPriority()
```
    从接口复制的说明: Node
    
    Get the node's target election priority value.
    
    指定者:
    
    getNodeTargetPriority 在接口中 Node
    
    返回:
    
    node's target election priority value.
  - getNodeState
```
public State getNodeState()
```
    从接口复制的说明: Node
    
    Get the node's state.
    
    指定者:
    
    getNodeState 在接口中 Node
    
    返回:
    
    node's state.
  - describe
```
public void describe(Describer.Printer out)
```
    指定者:
    
    describe 在接口中 Describer
  - toString
```
public String toString()
```
    覆盖:
    
    toString 在类中 Object

类 NodeImpl

嵌套类概要

从接口继承的嵌套类/接口 com.alipay.sofa.jraft.util.Describer

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

TIMER_FACTORY

GLOBAL_NUM_NODES

writeLock

readLock

构造器详细资料

NodeImpl

NodeImpl

方法详细资料

bootstrap

init

getNodeMetrics

getServiceFactory

readIndex

handleReadIndexRequest

apply

handlePreVoteRequest

handleRequestVoteRequest

handleAppendEntriesRequest

getOptions

getTimerManager

getRaftOptions

shutdown

onConfigurationChangeDone

getLeaderId

getGroupId

getServerId

getNodeId

getRpcService

onError

handleRequestVoteResponse

handlePreVoteResponse

isLeader

isLeader

shutdown

join

getCurrentConf

listPeers

listAlivePeers

listLearners

listAliveLearners

addPeer

removePeer

changePeers

resetPeers

addLearners

removeLearners

resetLearners

snapshot

resetElectionTimeoutMs

transferLeadershipTo

handleTimeoutNowRequest

handleInstallSnapshot

updateConfigurationAfterInstallingSnapshot

readCommittedUserLog

addReplicatorStateListener

removeReplicatorStateListener

clearReplicatorStateListeners

getReplicatorStatueListeners

getNodeTargetPriority

getNodeState

describe

toString