tigase.server

## Class MessageRouter

- java.lang.Object
- - tigase.server.BasicComponent
  - - tigase.server.AbstractMessageReceiver
    - - tigase.server.MessageRouter

- All Implemented Interfaces:
    ClusteredComponentIfc, Configurable, XMPPService, ConfigurationChangedAware, Initializable, RegistrarBean, UnregisterAware, MessageReceiver, MessageRouterIfc, ServerComponent, StatisticsContainer, StatisticsContainerIfc, VHostListener

      @Bean(name="message-router",
            parent=Kernel.class,
            active=true)
      public class MessageRouter
      extends AbstractMessageReceiver
      implements MessageRouterIfc, RegistrarBean, UnregisterAware

  Class MessageRouter
  Created: Tue Nov 22 07:07:11 2005
  Version:
    $Rev$
  Author:
    Artur Hefczyc

- - ### Field Summary

    - ### Fields inherited from class tigase.server.AbstractMessageReceiver

      `HOUR, INCOMING_FILTERS_PROP_KEY, INCOMING_FILTERS_PROP_VAL, MAX_QUEUE_SIZE_PROP_KEY, MAX_QUEUE_SIZE_PROP_VAL, maxInQueueSize, maxOutQueueSize, maxQueueSize, MINUTE, OUTGOING_FILTERS_PROP_KEY, OUTGOING_FILTERS_PROP_VAL, PACKET_DELIVERY_RETRY_COUNT_PROP_KEY, SCHEDULER_THREADS_PROP_KEY, SECOND`

    - ### Fields inherited from class tigase.server.BasicComponent

      `admins, ALL_PROP_KEY, COMMAND_PROP_NODE, scriptCommands, SCRIPTS_DIR_PROP_DEF, SCRIPTS_DIR_PROP_KEY, trusted, vHostManager`

    - ### Fields inherited from interface tigase.conf.Configurable

      `ADMINS_PROP_KEY, AMP_CLASS_NAME, AMP_CLUST_CLASS_NAME, AUTH_DOMAIN_POOL_CLASS, AUTH_REPO_DOMAINS_PROP_KEY, AUTH_REPO_PARAMS_NODE, AUTH_REPO_POOL_CLASS, AUTH_REPO_URL_PROP_KEY, BOSH_CLUST_COMP_CLASS_NAME, BOSH_COMP_CLASS_NAME, C2S_CLUST_COMP_CLASS_NAME, C2S_COMP_CLASS_NAME, CL_COMP_CLASS_NAME, CLUSTER_CONECT, CLUSTER_CONTR_CLASS_NAME, CLUSTER_LISTEN, CLUSTER_MODE, CLUSTER_NODES, CLUSTER_NODES_PROP_KEY, COMP_PROT_CLASS_NAME, COMPONENT_ID_PROP_KEY, DEF_AMP_NAME, DEF_BOSH_NAME, DEF_C2S_NAME, DEF_CL_COMP_NAME, DEF_CLUST_CONTR_NAME, DEF_COMP_PROT_NAME, DEF_EVENTBUS_NAME, DEF_EXT_COMP_NAME, DEF_HOSTNAME_PROP_KEY, DEF_MONITOR_NAME, DEF_S2S_NAME, DEF_SM_NAME, DEF_STATS_NAME, DEF_VHOST_MAN_NAME, DEF_WS2S_NAME, DERBY_REPO_CLASS_PROP_VAL, DERBY_REPO_URL_PROP_VAL, DRUPAL_REPO_URL_PROP_VAL, DRUPALWP_REPO_CLASS_PROP_VAL, DUMMY_REPO_CLASS_PROP_VAL, EVENTBUS_CLASS_NAME, EXT_COMP_CLASS_NAME, GEN_ADMINS, GEN_AUTH_DB, GEN_AUTH_DB_URI, GEN_COMP_CLASS, GEN_COMP_NAME, GEN_CONF, GEN_CONFIG, GEN_CONFIG_ALL, GEN_CONFIG_COMP, GEN_CONFIG_CS, GEN_CONFIG_DEF, GEN_CONFIG_SM, GEN_DEBUG, GEN_DEBUG_PACKAGES, GEN_EXT_COMP, GEN_MAX_QUEUE_SIZE, GEN_SCRIPT_DIR, GEN_SM_PLUGINS, GEN_SREC_ADMINS, GEN_SREC_DB, GEN_SREC_DB_URI, GEN_TEST, GEN_TRUSTED, GEN_USER_DB, GEN_USER_DB_URI, GEN_USER_DB_URI_PROP_KEY, GEN_VIRT_HOSTS, HOSTNAMES_PROP_KEY, LIBRESOURCE_REPO_CLASS_PROP_VAL, LIBRESOURCE_REPO_URL_PROP_VAL, MONITOR_CLASS_NAME, MONITOR_CLUST_CLASS_NAME, MONITORING, MYSQL_REPO_CLASS_PROP_VAL, MYSQL_REPO_URL_PROP_VAL, PGSQL_REPO_CLASS_PROP_VAL, PGSQL_REPO_URL_PROP_VAL, ROUTER_COMP_CLASS_NAME, S2S_CLUST_COMP_CLASS_NAME, S2S_COMP_CLASS_NAME, SHARED_AUTH_REPO_PARAMS_PROP_KEY, SHARED_AUTH_REPO_PROP_KEY, SHARED_USER_REPO_PARAMS_PROP_KEY, SHARED_USER_REPO_PROP_KEY, SM_CLUST_COMP_CLASS_NAME, SM_COMP_CLASS_NAME, STANZA_WHITE_CHAR_ACK, STANZA_XMPP_ACK, STATS_CLASS_NAME, STRINGPREP_PROCESSOR, TIGASE_AUTH_REPO_CLASS_PROP_VAL, TIGASE_AUTH_REPO_URL_PROP_VAL, TIGASE_CUSTOM_AUTH_REPO_CLASS_PROP_VAL, TRUSTED_PROP_KEY, USER_DOMAIN_POOL_CLASS, USER_REPO_DOMAINS_PROP_KEY, USER_REPO_PARAMS_NODE, USER_REPO_POOL_CLASS, USER_REPO_POOL_SIZE, USER_REPO_POOL_SIZE_PROP_KEY, USER_REPO_URL_PROP_KEY, VHOST_MAN_CLASS_NAME, VHOST_MAN_CLUST_CLASS_NAME, WS2S_CLASS_NAME, WS2S_CLUST_CLASS_NAME, XML_REPO_CLASS_PROP_VAL, XML_REPO_URL_PROP_VAL, XMPP_STANZA_ACK`

    - ### Fields inherited from interface tigase.disco.XMPPService

      `CMD_FEATURES, DEF_FEATURES, INFO_XMLNS, ITEMS_XMLNS`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `MessageRouter()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addComponent(ServerComponent component)`
    `void` | `addRegistrator(ComponentRegistrator registr)`
    `void` | `addRouter(MessageReceiver receiver)`
    `void` | `beanConfigurationChanged(Collection<String> changedFields)` Method called when configuration was applied to bean.
    `void` | `beforeUnregister()` Method called before bean unregister.
    `String` | `getDiscoCategoryType()` Method returns component category type used for service discovery responses.
    `String` | `getDiscoDescription()` Method returns description used for service discovery responses.
    `protected Integer` | `getMaxQueueSize(int def)`
    `void` | `getStatistics(StatisticsList list)` Method returns component statistics.
    `int` | `hashCodeForPacket(Packet packet)` This method decides how incoming packets are distributed among processing threads.
    `void` | `initBindings(Bindings binds)` Initialize a mapping of key/value pairs which can be used in scripts loaded by the server
    `void` | `initialize()` Method will be called, when bean will be created, configured and ready to use.
    `int` | `processingInThreads()` Concurrency control method.
    `int` | `processingOutThreads()` Concurrency control method.
    `void` | `processPacket(Packet packet)` This is the main `Packet` processing method.
    `void` | `processPacketMR(Packet packet, Queue<Packet> results)`
    `void` | `register(Kernel kernel)` Method called when bean is being registered allowing developer to programatically register other beans.
    `void` | `removeComponent(ServerComponent component)`
    `void` | `removeRegistrator(ComponentRegistrator registr)`
    `void` | `removeRouter(MessageReceiver receiver)`
    `void` | `setComponentsAll(Set<ServerComponent> components)`
    `void` | `setConfig(ConfiguratorAbstract config)`
    `void` | `start()`
    `void` | `stop()`
    `void` | `unregister(Kernel kernel)` Method called while bean is being unregistered.

    - ### Methods inherited from class tigase.server.AbstractMessageReceiver

      `addOutPacket, addOutPacketNB, addOutPackets, addOutPacketWithTimeout, addPacket, addPacketNB, addPackets, addRegexRouting, addTimerTask, addTimerTask, addTimerTask, addTimerTask, addTimerTask, addTimerTaskWithTimeout, addTimerTaskWithTimeout, clearRegexRoutings, everyHour, everyMinute, everySecond, getRegexRoutings, isInRegexRoutings, newPacketId, processingThreads, processOutPacket, processPacket, release, removeRegexRouting, schedulerThreads, setIncomingFilters, setName, setOutogingFilters, setParent, setSchedulerThreads_size`

    - ### Methods inherited from class tigase.server.BasicComponent

      `addComponentDomain, canCallCommand, canCallCommand, checkCommandAcl, checkCommandAcl, createScriptEngineManager, getComponentId, getComponentInfo, getDefaults, getDefHostName, getDefVHostItem, getDiscoCategory, getDiscoFeatures, getDiscoFeatures, getDiscoInfo, getDiscoItems, getName, getNodesConnected, getNodesConnectedWithLocal, getScriptCommands, getScriptItems, getServiceEntity, getVHostItem, handlesLocalDomains, handlesNameSubdomains, handlesNonLocalDomains, initializationCompleted, isAdmin, isInitializationComplete, isLocalDomain, isLocalDomainOrComponent, isNonAdminCommands, isSubdomain, isTrusted, isTrusted, nodeConnected, nodeDisconnected, onNodeConnected, onNodeDisconnected, processScriptCommand, removeComponentDomain, removeServiceDiscoveryItem, setAdmins, setClusterController, setCommandsACL, setProperties, setScriptsBaseDir, setVHostManager, updateServiceDiscoveryItem, updateServiceDiscoveryItem, updateServiceDiscoveryItem, updateServiceEntity`

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface tigase.server.ServerComponent

      `getComponentId, getComponentInfo, getName, initializationCompleted, isInitializationComplete, processPacket, release, setName`

    - ### Methods inherited from interface tigase.stats.StatisticsContainerIfc

      `getName`

    - ### Methods inherited from interface tigase.server.MessageReceiver

      `getDefHostName`

- - ### Constructor Detail

    - #### MessageRouter

          public MessageRouter()

  - ### Method Detail

    - #### register

          public void register(Kernel kernel)

      Description copied from interface: `RegistrarBean`
      Method called when bean is being registered allowing developer to programatically register other beans.
      Specified by:
        `register` in interface `RegistrarBean`
      Parameters:
        `kernel` - - instance from local scope

    - #### unregister

          public void unregister(Kernel kernel)

      Description copied from interface: `RegistrarBean`
      Method called while bean is being unregistered.
      Specified by:
        `unregister` in interface `RegistrarBean`
      Parameters:
        `kernel` - - instance from local scope

    - #### setComponentsAll

          public void setComponentsAll(Set<ServerComponent> components)

    - #### addComponent

          public void addComponent(ServerComponent component)
                            throws ConfigurationException

      Throws:
        `ConfigurationException`

    - #### addRegistrator

          public void addRegistrator(ComponentRegistrator registr)
                              throws ConfigurationException

      Throws:
        `ConfigurationException`

    - #### addRouter

          public void addRouter(MessageReceiver receiver)
                         throws ConfigurationException

      Throws:
        `ConfigurationException`

    - #### beanConfigurationChanged

          public void beanConfigurationChanged(Collection<String> changedFields)

      Description copied from interface: `ConfigurationChangedAware`
      Method called when configuration was applied to bean.
      Specified by:
        `beanConfigurationChanged` in interface `ConfigurationChangedAware`
      Overrides:
        `beanConfigurationChanged` in class `AbstractMessageReceiver`
      Parameters:
        `changedFields` - collection of field names which were changed

    - #### hashCodeForPacket

          public int hashCodeForPacket(Packet packet)

      Description copied from class: `AbstractMessageReceiver`
      This method decides how incoming packets are distributed among processing threads. Different components needs different distribution to efficient use all threads and avoid packets re-ordering.
      If there are N processing threads, packets are distributed among threads using following code:

           int threadNo = Math.abs(hashCodeForPacket(packet) % N);

      For a PubSub component, for example, a better packets distribution would be based on the PubSub channel name, for SM a better distribution is based on the destination address, etc....
      Overrides:
        `hashCodeForPacket` in class `AbstractMessageReceiver`
      Parameters:
        `packet` - is a `Packet` which needs to be processed by some thread.
      Returns:
        a hash code generated for the input thread.

    - #### initialize

          public void initialize()

      Description copied from interface: `Initializable`
      Method will be called, when bean will be created, configured and ready to use.
      Specified by:
        `initialize` in interface `Initializable`
      Overrides:
        `initialize` in class `BasicComponent`

    - #### initBindings

          public void initBindings(Bindings binds)

      Description copied from class: `BasicComponent`
      Initialize a mapping of key/value pairs which can be used in scripts loaded by the server
      Overrides:
        `initBindings` in class `BasicComponent`
      Parameters:
        `binds` - A mapping of key/value pairs, all of whose keys are Strings.

    - #### processingInThreads

          public int processingInThreads()

      Description copied from class: `AbstractMessageReceiver`
      Concurrency control method. Returns preferable number of threads set for this component.
      Overrides:
        `processingInThreads` in class `AbstractMessageReceiver`
      Returns:
        preferable number of threads set for this component.

    - #### processingOutThreads

          public int processingOutThreads()

      Description copied from class: `AbstractMessageReceiver`
      Concurrency control method. Returns preferable number of threads set for this component.
      Overrides:
        `processingOutThreads` in class `AbstractMessageReceiver`
      Returns:
        preferable number of threads set for this component.

    - #### processPacket

          public void processPacket(Packet packet)

      Description copied from class: `AbstractMessageReceiver`
      This is the main `Packet` processing method. It is called concurrently from many threads so implementing it in thread save manner is essential. The method is called for each packet addressed to the component.
      Please note, the `Packet` instance may be processed by different parts of the server, different components or plugins at the same time. Therefore this is very important to tread the `Packet` instance as unmodifiable object.
      Processing in this method is asynchronous, therefore there is no result value. If there are some 'result' packets generated during processing, they should be passed back using `addOutPacket(Packet)` method.
      Specified by:
        `processPacket` in class `AbstractMessageReceiver`
      Parameters:
        `packet` - is an instance of the `Packet` class passed for processing.

    - #### processPacketMR

          public void processPacketMR(Packet packet,
                                      Queue<Packet> results)

    - #### removeComponent

          public void removeComponent(ServerComponent component)

    - #### removeRegistrator

          public void removeRegistrator(ComponentRegistrator registr)

    - #### removeRouter

          public void removeRouter(MessageReceiver receiver)

    - #### start

          public void start()

      Specified by:
        `start` in interface `MessageReceiver`
      Specified by:
        `start` in interface `MessageRouterIfc`
      Overrides:
        `start` in class `AbstractMessageReceiver`

    - #### stop

          public void stop()

      Overrides:
        `stop` in class `AbstractMessageReceiver`

    - #### getDiscoCategoryType

          public String getDiscoCategoryType()

      Description copied from class: `BasicComponent`
      Method returns component category type used for service discovery responses.
      Overrides:
        `getDiscoCategoryType` in class `BasicComponent`
      Returns:
        category type of a component

    - #### getDiscoDescription

          public String getDiscoDescription()

      Description copied from class: `BasicComponent`
      Method returns description used for service discovery responses.
      Overrides:
        `getDiscoDescription` in class `BasicComponent`
      Returns:
        description of a component

    - #### getStatistics

          public void getStatistics(StatisticsList list)

      Description copied from class: `AbstractMessageReceiver`
      Method returns component statistics. Please note, the method can be called every second by the server monitoring system therefore no extensive or lengthy calculations are allowed. If there are some statistics requiring lengthy operations like database access they must have `Level.FINEST` assigned and must be put inside the level guard to prevent generating them by the system monitor. The system monitor does not collect `FINEST` statistics.
      Level guard code looks like the example below:

           if (list.checkLevel(Level.FINEST)) {
             // Some CPU intensive calculations or lengthy operations
             list.add(getName(), "Statistic description", stat_value, Level.FINEST);
           }

      This way you make sure your extensive operation is not executed every second by the monitoring system and does not affect the server performance.
      Specified by:
        `getStatistics` in interface `StatisticsContainerIfc`
      Overrides:
        `getStatistics` in class `AbstractMessageReceiver`
      Parameters:
        `list` - is a `StatistcsList` where all statistics are stored.

    - #### setConfig

          public void setConfig(ConfiguratorAbstract config)
                         throws ConfigurationException

      Specified by:
        `setConfig` in interface `MessageRouterIfc`
      Throws:
        `ConfigurationException`

    - #### beforeUnregister

          public void beforeUnregister()

      Description copied from interface: `UnregisterAware`
      Method called before bean unregister.
      Specified by:
        `beforeUnregister` in interface `UnregisterAware`

    - #### getMaxQueueSize

          protected Integer getMaxQueueSize(int def)

      Overrides:
        `getMaxQueueSize` in class `AbstractMessageReceiver`

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