java.lang.Object
- com.mysql.cj.jdbc.ha.ReplicationConnectionGroup

```
public class ReplicationConnectionGroup
extends Object
```
Group of connection objects which can be configured as a group. This is used for promotion/demotion of replicas and sources in a replication configuration, and for exposing metrics around replication-aware connections.

方法概要

所有方法实例方法具体方法已过时的方法
修饰符和类型	方法	说明
`void`	`addReplicaHost(String hostPortPair)`	Adds a host to the replicas hosts list.
`void`	`addSlaveHost(String hostPortPair)`	已过时。
`long`	`getActiveConnectionCount()`
`long`	`getConnectionCount()`
`int`	`getConnectionCountWithHostAsMaster(String hostPortPair)`	已过时。
`int`	`getConnectionCountWithHostAsReplica(String hostPortPair)`
`int`	`getConnectionCountWithHostAsSlave(String hostPortPair)`	已过时。
`int`	`getConnectionCountWithHostAsSource(String hostPortPair)`
`String`	`getGroupName()`
`Collection<String>`	`getMasterHosts()`	已过时。
`long`	`getNumberOfReplicaPromotions()`
`long`	`getNumberOfReplicasAdded()`
`long`	`getNumberOfReplicasRemoved()`
`long`	`getNumberOfSlavePromotions()`	已过时。
`long`	`getNumberOfSlavesAdded()`	已过时。
`long`	`getNumberOfSlavesRemoved()`	已过时。
`Collection<String>`	`getReplicaHosts()`
`Collection<String>`	`getSlaveHosts()`	已过时。
`Collection<String>`	`getSourceHosts()`
`long`	`getTotalConnectionCount()`
`void`	`handleCloseConnection(ReplicationConnection conn)`
`void`	`promoteReplicaToSource(String hostPortPair)`	Promotes a replica host to source.
`void`	`promoteSlaveToMaster(String hostPortPair)`	已过时。
`long`	`registerReplicationConnection(ReplicationConnection conn, List<String> localSourceList, List<String> localReplicaList)`
`void`	`removeMasterHost(String hostPortPair)`	已过时。
`void`	`removeMasterHost(String hostPortPair, boolean closeGently)`	已过时。
`void`	`removeReplicaHost(String hostPortPair, boolean closeGently)`	Removes a host from the replicas hosts list.
`void`	`removeSlaveHost(String hostPortPair, boolean closeGently)`	已过时。
`void`	`removeSourceHost(String hostPortPair)`	Removes a host from the sources hosts list.
`void`	`removeSourceHost(String hostPortPair, boolean closeGently)`	Removes a host from the sources hosts list.
`String`	`toString()`

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

- 方法详细资料
  - getConnectionCount
```
public long getConnectionCount()
```
  - registerReplicationConnection
```
public long registerReplicationConnection(ReplicationConnection conn,
                                          List<String> localSourceList,
                                          List<String> localReplicaList)
```
  - getGroupName
```
public String getGroupName()
```
  - getSourceHosts
```
public Collection<String> getSourceHosts()
```
  - getMasterHosts
```
@Deprecated
public Collection<String> getMasterHosts()
```
    已过时。
    
    Use getSourceHosts() instead.
    
    返回:
    
    source hosts
  - getReplicaHosts
```
public Collection<String> getReplicaHosts()
```
  - getSlaveHosts
```
@Deprecated
public Collection<String> getSlaveHosts()
```
    已过时。
    
    Use getReplicaHosts() instead.
    
    返回:
    
    replica hosts
  - addReplicaHost
```
public void addReplicaHost(String hostPortPair)
                    throws SQLException
```
    Adds a host to the replicas hosts list. We can safely assume that if this host was added to the replicas list, then it must be added to each one of the replication connections from this group as well. Unnecessary calls to ReplicationConnection.addReplicaHost(String) could result in undesirable locking issues, assuming that this method is synchronized by nature. This is a no-op if the group already has this host in a replica role.
    
    参数:
    
    hostPortPair - "host:port"
    
    抛出:
    
    SQLException - if an error occurs
  - addSlaveHost
```
@Deprecated
public void addSlaveHost(String hostPortPair)
                  throws SQLException
```
    已过时。
    
    Use addReplicaHost(String) instead.
    
    参数:
    
    hostPortPair - host:port
    
    抛出:
    
    SQLException
  - handleCloseConnection
```
public void handleCloseConnection(ReplicationConnection conn)
```
  - removeReplicaHost
```
public void removeReplicaHost(String hostPortPair,
                              boolean closeGently)
                       throws SQLException
```
    Removes a host from the replicas hosts list. We can safely assume that if this host was removed from the replicas list, then it must be removed from each one of the replication connections from this group as well. Unnecessary calls to ReplicationConnection.removeReplica(String, boolean) could result in undesirable locking issues, assuming that this method is synchronized by nature. This is a no-op if the group doesn't have this host in a replica role.
    
    参数:
    
    hostPortPair - "host:port"
    
    closeGently - remove host when it's not in use
    
    抛出:
    
    SQLException - if an error occurs
  - removeSlaveHost
```
@Deprecated
public void removeSlaveHost(String hostPortPair,
                            boolean closeGently)
                     throws SQLException
```
    已过时。
    
    Use removeReplicaHost(String, boolean) instead.
    
    参数:
    
    hostPortPair - host:port
    
    closeGently - option
    
    抛出:
    
    SQLException
  - promoteReplicaToSource
```
public void promoteReplicaToSource(String hostPortPair)
                            throws SQLException
```
    Promotes a replica host to source. We can safely assume that if this host was removed from the replicas list or added to the sources list, then the same host promotion must happen in each one of the replication connections from this group as well. Unnecessary calls to ReplicationConnection.promoteReplicaToSource(String) could result in undesirable locking issues, assuming that this method is synchronized by nature. This is a no-op if the group already has this host in a source role and not in replica role.
    
    参数:
    
    hostPortPair - "host:port"
    
    抛出:
    
    SQLException - if an error occurs
  - promoteSlaveToMaster
```
@Deprecated
public void promoteSlaveToMaster(String hostPortPair)
                          throws SQLException
```
    已过时。
    
    Use promoteReplicaToSource(String) instead.
    
    参数:
    
    hostPortPair - host:port
    
    抛出:
    
    SQLException
  - removeSourceHost
```
public void removeSourceHost(String hostPortPair)
                      throws SQLException
```
    Removes a host from the sources hosts list.
    
    参数:
    
    hostPortPair - host:port
    
    抛出:
    
    SQLException - if an error occurs
  - removeMasterHost
```
@Deprecated
public void removeMasterHost(String hostPortPair)
                      throws SQLException
```
    已过时。
    
    Use removeSourceHost(String) instead.
    
    参数:
    
    hostPortPair - host:port
    
    抛出:
    
    SQLException
  - removeSourceHost
```
public void removeSourceHost(String hostPortPair,
                             boolean closeGently)
                      throws SQLException
```
    Removes a host from the sources hosts list. We can safely assume that if this host was removed from the sources list, then it must be removed from each one of the replication connections from this group as well. Unnecessary calls to ReplicationConnection.removeSourceHost(String, boolean) could result in undesirable locking issues, assuming that this method is synchronized by nature. This is a no-op if the group doesn't have this host in a source role.
    
    参数:
    
    hostPortPair - "host:port"
    
    closeGently - remove host when it's not in use
    
    抛出:
    
    SQLException - if an error occurs
  - removeMasterHost
```
@Deprecated
public void removeMasterHost(String hostPortPair,
                             boolean closeGently)
                      throws SQLException
```
    已过时。
    
    Use removeSourceHost(String, boolean) instead.
    
    参数:
    
    hostPortPair - host:port
    
    closeGently - option
    
    抛出:
    
    SQLException
  - getConnectionCountWithHostAsReplica
```
public int getConnectionCountWithHostAsReplica(String hostPortPair)
```
  - getConnectionCountWithHostAsSlave
```
@Deprecated
public int getConnectionCountWithHostAsSlave(String hostPortPair)
```
    已过时。
    
    Use getConnectionCountWithHostAsReplica(String) instead.
    
    参数:
    
    hostPortPair - host:port
    
    返回:
    
    count
  - getConnectionCountWithHostAsSource
```
public int getConnectionCountWithHostAsSource(String hostPortPair)
```
  - getConnectionCountWithHostAsMaster
```
@Deprecated
public int getConnectionCountWithHostAsMaster(String hostPortPair)
```
    已过时。
    
    Use getConnectionCountWithHostAsSource(String) instead.
    
    参数:
    
    hostPortPair - host:port
    
    返回:
    
    count
  - getNumberOfReplicasAdded
```
public long getNumberOfReplicasAdded()
```
  - getNumberOfSlavesAdded
```
@Deprecated
public long getNumberOfSlavesAdded()
```
    已过时。
    
    Use getNumberOfReplicasAdded() instead.
    
    返回:
    
    count
  - getNumberOfReplicasRemoved
```
public long getNumberOfReplicasRemoved()
```
  - getNumberOfSlavesRemoved
```
@Deprecated
public long getNumberOfSlavesRemoved()
```
    已过时。
    
    Use getNumberOfReplicasRemoved() instead.
    
    返回:
    
    count
  - getNumberOfReplicaPromotions
```
public long getNumberOfReplicaPromotions()
```
  - getNumberOfSlavePromotions
```
@Deprecated
public long getNumberOfSlavePromotions()
```
    已过时。
    
    Use getNumberOfReplicaPromotions() instead.
    
    返回:
    
    count
  - getTotalConnectionCount
```
public long getTotalConnectionCount()
```
  - getActiveConnectionCount
```
public long getActiveConnectionCount()
```
  - toString
```
public String toString()
```
    覆盖:
    
    toString 在类中 Object

类 ReplicationConnectionGroup

方法概要

从类继承的方法 java.lang.Object

方法详细资料

getConnectionCount

registerReplicationConnection

getGroupName

getSourceHosts

getMasterHosts

getReplicaHosts

getSlaveHosts

addReplicaHost

addSlaveHost

handleCloseConnection

removeReplicaHost

removeSlaveHost

promoteReplicaToSource

promoteSlaveToMaster

removeSourceHost

removeMasterHost

removeSourceHost

removeMasterHost

getConnectionCountWithHostAsReplica

getConnectionCountWithHostAsSlave

getConnectionCountWithHostAsSource

getConnectionCountWithHostAsMaster

getNumberOfReplicasAdded

getNumberOfSlavesAdded

getNumberOfReplicasRemoved

getNumberOfSlavesRemoved

getNumberOfReplicaPromotions

getNumberOfSlavePromotions

getTotalConnectionCount

getActiveConnectionCount

toString