[CONF] Apache ServiceMix > servicemix-xmpp

confluence Thu, 19 Aug 2010 12:41:25 -0700

servicemix-xmpp

Page edited by Jean-Baptiste Onofré

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ServiceMix XMPP

The ServiceMix XMPP component provides support for receiving and sending XMPP messages via the bus.

Maven Archetype

You can use Maven to create a XMPP service unit:

mvn archetype:create \
    -DarchetypeGroupId=org.apache.servicemix.tooling \
    -DarchetypeArtifactId=servicemix-xmpp-service-unit \
    -DarchetypeVersion=2010.01 \
    -DgroupId=com.mycompany.myproduct \
    -DartifactId=mycomponent.artifact \
    -Dversion=1.0-SNAPSHOT

Once you've customized the service unit, simply install the SU:

mvn install

Remember that to be deployable in ServiceMix, the ServiceUnit has to be embedded in a Service Assembly: only the Service Assembly zip file can be deployed in ServiceMix.
To add your SU in a SA, you need to define it in the dependency sets:

<dependency>
  <groupId>your.group.id</groupId>
  <artifactId>your.artifact.id</artifactId>
  <version>your-version</version>
</dependency>

Endpoints Configuation

Receiver Endpoint (Consumer)

The receiver endpoint connects to the XMPP server and waiting for incoming XMPP messages.
When it receives a XMPP message, it converts it to JBI message (using the marshaler) and send to the NMR.

Message Exchange Pattern
The receiver endpoint will only generate InOnly exchanges.

XMPP Receiver (consumer) Endpoint (General)

<xmpp:receiver service="test:myJabberService"
               endpoint="receiverEndpoint"
               targetService="test:myJabberProcessor"
               host="my.jabberserver.lan"
               port="5222"
               user="lhein"
               password="myPassword"
               createAccount="false"  />

XMPP Receiver (consumer) Endpoint (Chat Room Listener)

<xmpp:receiver service="test:myJabberService"
               endpoint="receiverEndpoint"
               targetService="test:myJabberProcessor"
               host="my.jabberserver.lan"
               port="5222"
               user="lhein"
               password="myPassword"
               createAccount="false"  
               room="[email protected]"/>

XMPP Receiver Endpoint Attributes

Name	Type	Description	Default
host	string	sets the host name or ip adress of the XMPP server	null (must be spec'd)
port	int	the port number of the XMPP service	5222
user	String	the user name of the XMPP account	null (must be spec'd)
password	String	the password of the XMPP account	null (must be spec'd)
resource	String	the name of the resource / client	null
room	String	full room name (for example [email protected]) or null	null (means no room)
proxyHost	String	the hostname of the proxy to use	null
proxyPort	String	the port of the proxy to use	3128
proxyUser	String	the user name for the proxy to use	null
proxyPass	String	the user password for the proxy to use	null
proxyType	String	the proxy type to use (NONE, HTTP, SOCKS4, SOCKS5)	null
login	boolean	a flag if the user should login to the XMPP account	true
createAccount	boolean	a flag if an account should be created for unknown users	false
filter	class	a class which implements org.jivesoftware.smack.filter.PacketFilter	null
marshaler	class	a marshaler class which converts XMPP to NMSG	DefaultXMPPMarshaler

Sender Endpoint (Provider)

The XMPP Sender endpoint expects messages coming from the NMR, converts it into a XMPP message (using the marshaler) and send to the XMPP server.

XMPP Sender (Provider) Endpoint (Single User Chat)

<xmpp:sender service="test:myJabberService" 
             endpoint="senderEndpoint"
             host="my.jabberserver.lan"
             port="5222"
             user="lhein"
             password="myPassword"
             createAccount="false" 
             participant="[email protected]" />

XMPP Sender (Provider) Endpoint (Multi User Chat Room)

<xmpp:sender service="test:myJabberService" 
             endpoint="senderEndpoint"
             host="my.jabberserver.lan"
             port="5222"
             user="lhein"
             password="myPassword"
             createAccount="false" 
             room="[email protected]" />

XMPP Sender Endpoint Attributes

Name	Type	Description	Default
host	string	sets the host name or ip adress of the XMPP server	null (must be spec'd)
port	int	the port number of the XMPP service	5222
user	String	the user name of the XMPP account	null (must be spec'd)
password	String	the password of the XMPP account	null (must be spec'd)
resource	String	the name of the resource / client	null
participant	String	the name of the person to chat with (if you specify this, leave room null)	null
room	String	full room name (if you specify this, leave participant null)	null
proxyHost	String	the hostname of the proxy to use	null
proxyPort	String	the port of the proxy to use	3128
proxyUser	String	the user name for the proxy to use	null
proxyPass	String	the user password for the proxy to use	null
proxyType	String	the proxy type to use (NONE, HTTP, SOCKS4, SOCKS5)	null
login	boolean	a flag if the user should login to the XMPP account	true
createAccount	boolean	a flag if an account should be created for unknown users	false
marshaler	class	a marshaler class which converts XMPP to NMSG	DefaultXMPPMarshaler

Marshalers

You can write your own marshalers for conversion between XMPP and normalized message and vice versa.
To do this you simply need to subclass the org.apache.servicemix.xmpp.marshaler.impl.DefaultXMPPMarshaler or start from scratch
by implementing the ** interface.

The marshaler interface methods

For providing your own marshaler you only need to implement two methods:

toJBI(...)

This method is responsible for translating a received XMPP message into a jbi compliant normalized message ready to be sent to the bus.

fromJBI(...)

This method is responsible for translating a received normalized message into a XMPP message ready to be sent to the mail server.

After finishing your marshaler you can simply configure your endpoints to use it:

Marshaler example

<xmpp:receiver service="test:myJabberService"
               endpoint="receiverEndpoint"
               targetService="test:myJabberProcessor"
               host="my.jabberserver.lan"
               port="5222"
               user="lhein"
               password="myPassword"
               createAccount="false"  
               room="[email protected]" >

    <property name="marshaler">
        <bean class="com.mycompany.MyXMPPMarshaler" />
    </property>

</xmpp:receiver>