com.alicloud.openservices.tablestore.tunnel.worker

类 TunnelStateMachine

java.lang.Object

com.alicloud.openservices.tablestore.tunnel.worker.TunnelStateMachine

public class TunnelStateMachine
extends Object

TunnelStateMachine is used for maintaining and updating the states of Channel and ChannelConnect (including local memory and interaction with the Tunnel server). There are five states for Channels: WAIT, OPEN, CLOSING, CLOSE, TERMINATED. The descriptions of Channel states are as follows: 1. WAIT: Waiting state, when a Tunnel is created, the Tunnel server will pre-create a batch of Channels in the WAIT state to be allocated to Tunnel clients. 2. OPEN: Active state, when the TunnelClient calls the heartbeat interface, the Tunnel server will allocate Channels to the TunnelClient and set their states to OPEN. 3. CLOSING: Closing state, when a new TunnelClient joins or exits, the Tunnel server will set the Channel to CLOSING. A Channel in the CLOSING state is transient, indicating that the Tunnel server is re-scheduling the Channel. In this state, the client must first change the Channel state in local memory to CLOSED, then report it through the heartbeat so the Tunnel server can handle the unified state processing, Channel scheduling, and re-allocation. 4. CLOSE: Closed state, when the TunnelClient encounters an error or normal shutdown, the Channel state will be set to CLOSE. A Channel in the CLOSE state is temporarily closed, similar to a WAIT state Channel. When a TunnelClient re-calls the heartbeat interface, the CLOSE state Channel will be re-allocated to a new TunnelClient, and its state will become OPEN. 5. TERMINATED: Terminated state, after data consumption on the Channel is completed, it will enter this state. Channels of the full-quantity type will eventually be fully consumed and transition into this state, while incremental Channels will not enter this state (streaming data has no end).

ChannelConnect corresponds to Channel and has four states: WAIT, RUNNING, CLOSING, CLOSED. The relevant descriptions are as follows: 1. WAIT: Waiting state, the initial state when a ChannelConnect is created. 2. RUNNING: Running, this state indicates that the ChannelConnect is working well, continuously fetching data, processing data, and recording consumption checkpoints. 3. CLOSING: Closing, corresponding to the CLOSING state of the Channel, during this state the ChannelConnect will interrupt data processing and transition to the CLOSED state. 4. CLOSED: Closed, when a ChannelConnect is in this state, it can no longer consume data and needs to be removed from active connections. At the same time, its corresponding Channel needs to be updated to the CLOSE or TERMINATED state.

构造器概要

构造器

构造器和说明
TunnelStateMachine(String tunnelId, String clientId, IChannelDialer dialer, IChannelProcessorFactory processorFactory, TunnelClientInterface client)

方法概要

限定符和类型	方法和说明
List<IChannelConnect>	batchGetChannelConnects()
List<com.alicloud.openservices.tablestore.model.tunnel.internal.Channel>	batchGetChannels()
void	batchUpdateChannels(List<com.alicloud.openservices.tablestore.model.tunnel.internal.Channel> batchChannels)
void	close()
ConcurrentHashMap<String,Integer>	getChannelClosingRounds()
void	handleHangedClosingChannels()
void	setChannelClosingRoundThreshold(int channelClosingRoundThreshold)
void	setEnableClosingChannelDetect(boolean enableClosingChannelDetect)
void	updateStatus(com.alicloud.openservices.tablestore.model.tunnel.internal.Channel channel) Update the active Channel information in the StateMachine and remove the ChannelConnect that is in the Closed state (with the same ChannelId).

从类继承的方法 java.lang.Object

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

构造器详细资料

TunnelStateMachine

public TunnelStateMachine(String tunnelId,
                          String clientId,
                          IChannelDialer dialer,
                          IChannelProcessorFactory processorFactory,
                          TunnelClientInterface client)

方法详细资料

updateStatus

public void updateStatus(com.alicloud.openservices.tablestore.model.tunnel.internal.Channel channel)

Update the active Channel information in the StateMachine and remove the ChannelConnect that is in the Closed state (with the same ChannelId).

参数:

channel -

batchGetChannelConnects

public List<IChannelConnect> batchGetChannelConnects()

batchGetChannels

public List<com.alicloud.openservices.tablestore.model.tunnel.internal.Channel> batchGetChannels()

batchUpdateChannels

public void batchUpdateChannels(List<com.alicloud.openservices.tablestore.model.tunnel.internal.Channel> batchChannels)

close

public void close()

handleHangedClosingChannels

public void handleHangedClosingChannels()

setEnableClosingChannelDetect

public void setEnableClosingChannelDetect(boolean enableClosingChannelDetect)

setChannelClosingRoundThreshold

public void setChannelClosingRoundThreshold(int channelClosingRoundThreshold)

getChannelClosingRounds

public ConcurrentHashMap<String,Integer> getChannelClosingRounds()