tigase.server

## Class MessageRouter

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

- All Implemented Interfaces:
    ClusteredComponentIfc, Configurable, XMPPService, MessageReceiver, MessageRouterIfc, ServerComponent, StatisticsContainer, StatisticsContainerIfc, VHostListener

      public class MessageRouter
      extends AbstractMessageReceiver
      implements MessageRouterIfc

  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_SRECV_NAME, DEF_SSEND_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, SRECV_COMP_CLASS_NAME, SSEND_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)` Method description
    `void` | `addRegistrator(ComponentRegistrator registr)` Method description
    `void` | `addRouter(MessageReceiver receiver)` Method description
    `Map<String,Object>` | `getDefaults(Map<String,Object> params)` Returns default configuration settings for the component as a `Map` with keys as configuration property IDs and values as the configuration property values.
    `String` | `getDiscoCategoryType()` Method description
    `String` | `getDiscoDescription()` Method description
    `protected Integer` | `getMaxQueueSize(int def)` Method description
    `void` | `getStatistics(StatisticsList list)` Method returns component statistics.
    `int` | `hashCodeForPacket(Packet packet)` This method decides how incoming packets are distributed among processing threads.
    `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)` Method description
    `void` | `removeComponent(ServerComponent component)` Method description
    `void` | `removeRegistrator(ComponentRegistrator registr)`
    `void` | `removeRouter(MessageReceiver receiver)` Method description
    `void` | `setConfig(ConfiguratorAbstract config)`
    `void` | `setProperties(Map<String,Object> props)` Sets all configuration properties for the object.
    `void` | `start()`
    `void` | `stop()` Method description

    - ### 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, setMaxQueueSize, setName, setParent`

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

      `addComponentDomain, canCallCommand, checkCommandAcl, getComponentId, getComponentInfo, getDefHostName, getDefVHostItem, getDiscoCategory, getDiscoFeatures, getDiscoFeatures, getDiscoInfo, getDiscoInfo, getDiscoItems, getDiscoItems, getName, getNodesConnected, getNodesConnectedWithLocal, getScriptCommands, getScriptItems, getServiceEntity, getVHostItem, handlesLocalDomains, handlesNameSubdomains, handlesNonLocalDomains, initBindings, initializationCompleted, isAdmin, isInitializationComplete, isLocalDomain, isLocalDomainOrComponent, isNonAdminCommands, isSubdomain, isTrusted, isTrusted, nodeConnected, nodeDisconnected, onNodeConnected, onNodeDisconnected, processScriptCommand, removeComponentDomain, removeServiceDiscoveryItem, setClusterController, 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

    - #### addComponent

          public void addComponent(ServerComponent component)
                            throws ConfigurationException

      Method description
      Parameters:
        `component` -
      Throws:
        `ConfigurationException`

    - #### addRegistrator

          public void addRegistrator(ComponentRegistrator registr)
                              throws ConfigurationException

      Method description
      Parameters:
        `registr` -
      Throws:
        `ConfigurationException`

    - #### addRouter

          public void addRouter(MessageReceiver receiver)
                         throws ConfigurationException

      Method description
      Parameters:
        `receiver` -
      Throws:
        `ConfigurationException`

    - #### 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.

    - #### 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)

      Method description
      Parameters:
        `packet` -
        `results` -

    - #### removeComponent

          public void removeComponent(ServerComponent component)

      Method description
      Parameters:
        `component` -

    - #### removeRegistrator

          public void removeRegistrator(ComponentRegistrator registr)

    - #### removeRouter

          public void removeRouter(MessageReceiver receiver)

      Method description
      Parameters:
        `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()

      Description copied from class: `AbstractMessageReceiver`
      Method description
      Overrides:
        `stop` in class `AbstractMessageReceiver`

    - #### getDefaults

          public Map<String,Object> getDefaults(Map<String,Object> params)

      Description copied from class: `AbstractMessageReceiver`
      Returns default configuration settings for the component as a `Map` with keys as configuration property IDs and values as the configuration property values. All the default parameters returned from this method are later passed to the `setProperties(...)` method. Some of them may have changed value if they have been overwritten in the server configuration. The configuration property value can be of any of the basic types: `int`, `long`, `boolean`, `String`.
      Specified by:
        `getDefaults` in interface `Configurable`
      Overrides:
        `getDefaults` in class `AbstractMessageReceiver`
      Parameters:
        `params` - is a `Map` with some initial properties set for the starting up server. These parameters can be used as a hints to generate component's default configuration.
      Returns:
        a `Map` with the component default configuration.

    - #### getDiscoCategoryType

          public String getDiscoCategoryType()

      Description copied from class: `BasicComponent`
      Method description
      Overrides:
        `getDiscoCategoryType` in class `BasicComponent`
      Returns:
        a value of `String`

    - #### getDiscoDescription

          public String getDiscoDescription()

      Description copied from class: `BasicComponent`
      Method description
      Overrides:
        `getDiscoDescription` in class `BasicComponent`
      Returns:
        a value of `String`

    - #### 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`

    - #### setProperties

          public void setProperties(Map<String,Object> props)
                             throws ConfigurationException

      Description copied from interface: `Configurable`
      Sets all configuration properties for the object.
      Specified by:
        `setProperties` in interface `Configurable`
      Overrides:
        `setProperties` in class `AbstractMessageReceiver`
      Parameters:
        `props` - `Map` with the configuration
      Throws:
        `ConfigurationException` - - if setting configuration will fail which will make it unable to work

    - #### getMaxQueueSize

          protected Integer getMaxQueueSize(int def)

      Description copied from class: `AbstractMessageReceiver`
      Method description
      Overrides:
        `getMaxQueueSize` in class `AbstractMessageReceiver`
      Returns:
        a value of `Integer`

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