[Zookeeper学习笔记之七]Zookeeper源代码分析之Zookeeper.States

cundeng

public enum States {
CONNECTING, //Zookeeper服务器不可用，客户端处于尝试链接状态
ASSOCIATING, //？？？
CONNECTED, //链接建立，可以与Zookeeper服务器正常通信
CONNECTEDREADONLY, //处于只读状态的链接状态，只读模式可以在构造Zookeeper时指定
CLOSED, //会话关闭，显式调用Zookeeper的close方法
AUTH_FAILED, //建立链接时，认证失败
NOT_CONNECTED; //链接断开状态
//会话在两种状态下处于Alive状态，没有关闭，没有认证失败
//CONNECTING，NOT_CONNECTED都出于Alive状态
public boolean isAlive() {
return this != CLOSED && this != AUTH_FAILED;
}
/**
* Returns whether we are connected to a server (which
* could possibly be read-only, if this client is allowed
* to go to read-only mode)
* */
public boolean isConnected() {
return this == CONNECTED || this == CONNECTEDREADONLY;
}
}