Examples of net.kuujo.vertigo.network.NetworkContext.status()

Class net.kuujo.vertigo.network.NetworkContext

Examples of net.kuujo.vertigo.network.NetworkContext.status()

net.kuujo.vertigo.network.NetworkContext.status()
Returns the network status address.
This is the address of a shared-data key that is monitored by all component instances in the cluster. When the key is set, components know that the network is considered stable. During a network configuration change, the network manager will unset the status address, notifying components that the network is no longer stable until the key is reset. This is the mechanism used by Vertigo to perform coordination between components. @return The network status address.

      if (managers.containsKey(context.address())) {
        // Now that we have the network's context we need to watch the network's
        // status key before we begin undeploying the network. Once we unset the
        // network's configuration key the network's manager will automatically
        // begin undeploying the network.
        data.watch(context.status(), MapEvent.Type.CHANGE, new Handler<MapEvent<String, String>>() {
          @Override
          public void handle(MapEvent<String, String> event) {
            // When the network's status key is set to an empty string, that indicates
            // that the network's manager has completely undeployed all components and
            // connections within the network. The manager is the only element of the

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            // connections within the network. The manager is the only element of the
            // network left running, so we can go ahead and undeploy it.
            if (event.value() != null && event.value().equals("")) {
              // First, stop watching the status key so this handler doesn't accidentally
              // get called again for some reason.
              data.unwatch(context.status(), MapEvent.Type.CHANGE, this, new Handler<AsyncResult<Void>>() {
                @Override
                public void handle(AsyncResult<Void> result) {
                  // Now undeploy the manager from the context cluster. Once the manager
                  // has been undeployed the undeployment of the network is complete.
                  platform.undeployVerticle(managers.remove(context.address()), new Handler<AsyncResult<Void>>() {

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                        // We can be nice and unset the status key since the manager was undeployed :-)
                        DefaultNodeManager.this.context.execute(new Action<Void>() {
                          @Override
                          public Void perform() {
                            networks.remove(context.address());
                            data.remove(context.status());
                            return null;
                          }
                        }, new Handler<AsyncResult<Void>>() {
                          @Override
                          public void handle(AsyncResult<Void> result) {

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        // If the new configuration has no components then undeploy the entire network.
        if (context.components().isEmpty()) {
          // We need to watch the network's status key to determine when the network's
          // components have been completely undeployed. Once that happens it's okay
          // to then undeploy the network's manager.
          data.watch(context.status(), MapEvent.Type.CHANGE, new Handler<MapEvent<String, String>>() {
            @Override
            public void handle(MapEvent<String, String> event) {
              // When the network's status key is set to an empty string, that indicates
              // that the network's manager has completely undeployed all components and
              // connections within the network. The manager is the only element of the

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              // connections within the network. The manager is the only element of the
              // network left running, so we can go ahead and undeploy it.
              if (event.value() != null && event.value().equals("")) {
                // First, stop watching the status key so this handler doesn't accidentally
                // get called again for some reason.
                data.unwatch(context.status(), MapEvent.Type.CHANGE, this, new Handler<AsyncResult<Void>>() {
                  @Override
                  public void handle(AsyncResult<Void> result) {
                    // Now undeploy the manager from the context cluster. Once the manager
                    // has been undeployed the undeployment of the network is complete.
                    platform.undeployVerticle(managers.remove(context.address()), new Handler<AsyncResult<Void>>() {

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                          // We can be nice and unset the status key since the manager was undeployed :-)
                          DefaultNodeManager.this.context.execute(new Action<Void>() {
                            @Override
                            public Void perform() {
                              networks.remove(context.address());
                              data.remove(context.status());
                              return null;
                            }
                          }, new Handler<AsyncResult<Void>>() {
                            @Override
                            public void handle(AsyncResult<Void> result) {

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          });
        } else {
          // If only a portion of the running network is being undeployed, we need
          // to watch the network's status key for notification once the configuration
          // change is complete.
          data.watch(context.status(), MapEvent.Type.CHANGE, new Handler<MapEvent<String, String>>() {
            @Override
            public void handle(MapEvent<String, String> event) {
              if (event.value() != null && event.value().equals(context.version())) {
                // The network's configuration has been completely updated. Stop watching
                // the network's status key and call the async handler.

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            @Override
            public void handle(MapEvent<String, String> event) {
              if (event.value() != null && event.value().equals(context.version())) {
                // The network's configuration has been completely updated. Stop watching
                // the network's status key and call the async handler.
                data.unwatch(context.status(), null, this, new Handler<AsyncResult<Void>>() {
                  @Override
                  public void handle(AsyncResult<Void> result) {
                    message.reply(new JsonObject().putString("status", "ok").putObject("context", Contexts.serialize(context)));
                  }
                });

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                  } else {
                    testComplete();
                  }
                }
              });
              data.put(context.status(), "ready");
            }
          }
        });
      }
    });

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                      @Override
                      public void handle(Void _) {
                        testComplete();
                      }
                    });
                    data.remove(context.status());
                  }
                }
              });
              data.put(context.status(), "ready");
            }

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