Examples of ZKDiscoveryService

org.apache.twill.discovery.ZKDiscoveryService
Zookeeper implementation of {@link DiscoveryService} and {@link DiscoveryServiceClient}.
Discoverable services are registered within Zookeeper under the namespace 'discoverable' by default. If you would like to change the namespace under which the services are registered then you can pass in the namespace during construction of {@link ZKDiscoveryService}.

Following is a simple example of how {@link ZKDiscoveryService} can be used for registering servicesand also for discovering the registered services.
```
 {@code DiscoveryService service = new ZKDiscoveryService(zkClient);}service.register(new Discoverable()  @Override public String getName() { return 'service-name'; } @Override public InetSocketAddress getSocketAddress() { return new InetSocketAddress(hostname, port); } }); ... ... ServiceDiscovered services = service.discovery("service-name"); ... } 
```

Examples of org.apache.twill.discovery.ZKDiscoveryService

      @Override
      public DiscoveryServiceClient load(String key) throws Exception {
        int idx = key.indexOf('.');  // It must be found as checked in the discover method
        String ns = String.format("%s/%s%s", twillNamespace, key.substring(0, idx), key.substring(idx));
        LOG.debug("Create ZKDiscoveryClient for " + ns);
        return new ZKDiscoveryService(ZKClients.namespace(zkClient, ns));
      }
    };
  }

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Examples of org.apache.twill.discovery.ZKDiscoveryService

    }


    @Provides
    @Singleton
    private ZKDiscoveryService providesDiscoveryService(ZKClient zkClient) {
      return new ZKDiscoveryService(zkClient);
    }

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Examples of org.apache.twill.discovery.ZKDiscoveryService

    }


    @Provides
    @Singleton
    private ZKDiscoveryService providesZKDiscoveryService(ZKClientService zkClient) {
      return new ZKDiscoveryService(zkClient);
    }

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Examples of org.apache.twill.discovery.ZKDiscoveryService

      @Override
      public DiscoveryServiceClient load(String key) throws Exception {
        int idx = key.indexOf('.');  // It must be found as checked in the discover method
        String ns = String.format("%s/%s%s", twillNamespace, key.substring(0, idx), key.substring(idx));
        LOG.debug("Create ZKDiscoveryClient for " + ns);
        return new ZKDiscoveryService(ZKClients.namespace(zkClient, ns));
      }
    };
  }

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Examples of org.apache.twill.discovery.ZKDiscoveryService

    }


    @Provides
    @Singleton
    private ZKDiscoveryService providesDiscoveryService(ZKClient zkClient) {
      return new ZKDiscoveryService(zkClient);
    }

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Examples of org.apache.twill.discovery.ZKDiscoveryService


  public AbstractTwillController(RunId runId, ZKClient zkClient, Iterable<LogHandler> logHandlers) {
    super(runId, zkClient);
    this.logHandlers = new ConcurrentLinkedQueue<LogHandler>();
    this.kafkaClient = new ZKKafkaClientService(ZKClients.namespace(zkClient, "/" + runId.getId() + "/kafka"));
    this.discoveryServiceClient = new ZKDiscoveryService(zkClient);
    Iterables.addAll(this.logHandlers, logHandlers);
  }

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Examples of org.apache.twill.discovery.ZKDiscoveryService

    ZKClientService zkClientService = ZKClientServices.delegate(
      ZKClients.reWatchOnExpire(
        ZKClients.retryOnFailure(ZKClientService.Builder.of(zkConnectStr).build(),
                                 RetryStrategies.fixDelay(1, TimeUnit.SECONDS))));


    ZKDiscoveryService discoveryService = new ZKDiscoveryService(zkClientService);


    TwillSpecification twillSpec = loadTwillSpec(twillSpecFile);
    renameLocalFiles(twillSpec.getRunnables().get(runnableName));
    
    TwillRunnableSpecification runnableSpec = twillSpec.getRunnables().get(runnableName).getRunnableSpecification();

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Examples of org.apache.twill.discovery.ZKDiscoveryService

    ZKClientService zkClientService = ZKClientServices.delegate(
      ZKClients.reWatchOnExpire(
        ZKClients.retryOnFailure(ZKClientService.Builder.of(zkConnectStr).build(),
                                 RetryStrategies.fixDelay(1, TimeUnit.SECONDS))));


    DiscoveryService discoveryService = new ZKDiscoveryService(zkClientService);


    TwillSpecification twillSpec = loadTwillSpec(twillSpecFile);
    renameLocalFiles(twillSpec.getRunnables().get(runnableName));
    
    TwillRunnableSpecification runnableSpec = twillSpec.getRunnables().get(runnableName).getRunnableSpecification();

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Examples of org.apache.twill.discovery.ZKDiscoveryService


  public AbstractTwillController(RunId runId, ZKClient zkClient, Iterable<LogHandler> logHandlers) {
    super(runId, zkClient);
    this.logHandlers = new ConcurrentLinkedQueue<LogHandler>();
    this.kafkaClient = new ZKKafkaClientService(ZKClients.namespace(zkClient, "/" + runId.getId() + "/kafka"));
    this.discoveryServiceClient = new ZKDiscoveryService(zkClient);
    Iterables.addAll(this.logHandlers, logHandlers);
  }

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Examples of org.apache.twill.discovery.ZKDiscoveryService

    }


    @Provides
    @Singleton
    private ZKDiscoveryService providesZKDiscoveryService(ZKClientService zkClient) {
      return new ZKDiscoveryService(zkClient);
    }

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