Examples of net.spy.memcached.config.ClusterConfiguration

net.spy.memcached.config.ClusterConfiguration
A type to capture the configuration version number and the server list contained the response for getConfig API for "cluster" configuration type.

        isConfigurationProtocolSupported = false;
      }
      
      if(configResult != null && ! configResult.trim().isEmpty()){
        //Parse configuration to get the list of cache servers.
        ClusterConfiguration clusterConfiguration = AddrUtil.parseClusterTypeConfiguration(configResult);
        
        //Initialize client with the actual set of endpoints.
        mconn.notifyUpdate(clusterConfiguration);
        isConfigurationInitialized = true;
      }

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      NodeEndPoint endPoint = new NodeEndPoint(hostName, ipAddress, port);
      endPoints.add(endPoint);
    }
    assert !endPoints.isEmpty() : "No endpoints found";
    
    ClusterConfiguration config = new ClusterConfiguration(versionNumber, endPoints);
    
    return config;
  }

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  public ConfigurationPoller(final MemcachedClient client, long pollingInterval){
    this.client = client;
    
    //The explicit typed emptyList assignment avoids type warning.
    List<NodeEndPoint> emptyList = Collections.emptyList();
    this.currentClusterConfiguration = new ClusterConfiguration(-1, emptyList);
    
    //Keep the initial delay to few seconds to begin polling quickly. This is useful if the config API call timed out in Client constructor 
    //and did not initialize the set of nodes in the cluster. The poller takes over the responsibility of configuring the client with the 
    //nodes in the cluster.  
    scheduledExecutor.scheduleAtFixedRate(this, INITIAL_DELAY, pollingInterval, TimeUnit.MILLISECONDS);

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      }
      
      getLogger().debug("Retrieved configuration value:" + newConfigResponse);
      
      if(newConfigResponse != null && !newConfigResponse.equals(currentClusterConfigResponse)){
        ClusterConfiguration newClusterConfiguration = AddrUtil.parseClusterTypeConfiguration(newConfigResponse);
        getLogger().warn("Change in configuration - Existing configuration: " + currentClusterConfiguration + "\n New configuration:" +  newClusterConfiguration);
        if(newClusterConfiguration.getConfigVersion() > currentClusterConfiguration.getConfigVersion()){
          currentClusterConfigResponse = newConfigResponse;
          currentClusterConfiguration = newClusterConfiguration;
          for(ClusterConfigurationObserver observer : clusterConfigObservers){
            getLogger().info("Notifying observers about configuration change.");
            observer.notifyUpdate(newClusterConfiguration);
          }
          if(!client.isConfigurationInitialized()){
            client.setIsConfigurtionInitialized(true);
          }
        } else if(newClusterConfiguration.getConfigVersion() < currentClusterConfiguration.getConfigVersion()){
          getLogger().info("Ignoring stale configuration - Existing configuration: " + currentClusterConfigResponse + "\n Stale configuration:" +  newConfigResponse);
          trackPollingError();
          return;
        }
      }

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Related Classes of net.spy.memcached.config.ClusterConfiguration

net.spy.memcached.AddrUtil

net.spy.memcached.ConfigurationPoller

net.spy.memcached.MemcachedClient

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