Package com.mapr.fs

Class ServiceWatcher

  • All Implemented Interfaces:
    org.apache.zookeeper.Watcher
    Direct Known Subclasses:
    QueryServiceWatcher
    public class ServiceWatcher
extends java.lang.Object
implements org.apache.zookeeper.Watcher

    • Nested Class Summary

      • Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher

        org.apache.zookeeper.Watcher.Event, org.apache.zookeeper.Watcher.WatcherType

    • Constructor Summary

      Constructors 
      Constructor Description
      ServiceWatcher​(java.lang.String zkConnectString, java.lang.String clusterName)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()  
      boolean connect()  
      protected java.lang.String create​(java.lang.String path, byte[] data, java.util.List<org.apache.zookeeper.data.ACL> acl, org.apache.zookeeper.CreateMode createMode)  
      protected java.lang.Void delete​(java.lang.String path)  
      protected java.util.List<java.lang.String> getChildren​(java.lang.String nodePath)  
      protected byte[] getData​(java.lang.String nodePath)
      Retrieve the data stored in the specified ZooKeeper node specified by `primaryPath`.
      java.lang.String getZKString()  
      boolean isConnected()  
      void process​(org.apache.zookeeper.WatchedEvent event)  
      boolean reconnect()  

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • ServiceWatcher

        public ServiceWatcher​(java.lang.String zkConnectString,
                      java.lang.String clusterName)

    • Method Detail

      • getZKString

        public java.lang.String getZKString()

      • isConnected

        public boolean isConnected()

      • connect

        public boolean connect()

      • reconnect

        public boolean reconnect()

      • close

        public void close()

      • process

        public void process​(org.apache.zookeeper.WatchedEvent event)
        Specified by:
        process in interface org.apache.zookeeper.Watcher

      • getData

        protected byte[] getData​(java.lang.String nodePath)
                  throws java.lang.InterruptedException,
                         org.apache.zookeeper.KeeperException,
                         RetryException,
                         java.io.FileNotFoundException,
                         java.io.IOException
        Retrieve the data stored in the specified ZooKeeper node specified by `primaryPath`. If the `primaryPath` does not exist, try the other paths if provided, in the order they are provided
        Parameters:
        primaryPath - The primary ZooKeeper node path from which to read data from
        nodePaths - Array of alternate paths to try
        Returns:
        binary data stored in the ZooKeeper node.
        Throws:
        RetryException - if a retry-able exception occurs
        java.io.FileNotFoundException - if none of the specified nodes exist
        java.io.IOException - if a non-retry-able exception occurs
        java.lang.InterruptedException
        org.apache.zookeeper.KeeperException.ConnectionLossException
        org.apache.zookeeper.KeeperException.SessionExpiredException
        org.apache.zookeeper.KeeperException.SessionMovedException
        org.apache.zookeeper.KeeperException

      • delete

        protected java.lang.Void delete​(java.lang.String path)
                         throws java.lang.InterruptedException,
                                org.apache.zookeeper.KeeperException,
                                RetryException,
                                java.io.FileNotFoundException,
                                java.io.IOException
        Throws:
        java.lang.InterruptedException
        org.apache.zookeeper.KeeperException
        RetryException
        java.io.FileNotFoundException
        java.io.IOException

      • create

        protected java.lang.String create​(java.lang.String path,
                                  byte[] data,
                                  java.util.List<org.apache.zookeeper.data.ACL> acl,
                                  org.apache.zookeeper.CreateMode createMode)
                           throws java.lang.InterruptedException,
                                  org.apache.zookeeper.KeeperException,
                                  RetryException,
                                  java.io.FileNotFoundException,
                                  java.io.IOException
        Throws:
        java.lang.InterruptedException
        org.apache.zookeeper.KeeperException
        RetryException
        java.io.FileNotFoundException
        java.io.IOException

      • getChildren

        protected java.util.List<java.lang.String> getChildren​(java.lang.String nodePath)
                                                throws RetryException,
                                                       java.io.FileNotFoundException,
                                                       java.io.IOException,
                                                       java.lang.InterruptedException,
                                                       org.apache.zookeeper.KeeperException
        Throws:
        RetryException
        java.io.FileNotFoundException
        java.io.IOException
        java.lang.InterruptedException
        org.apache.zookeeper.KeeperException