ServiceMix XMPP

The ServiceMix XMPP component provides support for receiving and sending XMPP messages via the enterprise service 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

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.

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"  />

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="smxchat@conference.my.jabberserver.lan"/>

The following table shows the additional configuration possibilities of the endpoint other than the configuration of the default ConsumerEndpoint class.

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 area51@conference.myserver.com) 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.

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="gertv@my.jabberserver.lan" />

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="smxchat@conference.my.jabberserver.lan" />

The following table shows the configuration possibilities of the endpoint.

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

For all xbean file endpoint configuration take a look at Xml schemas

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="smxchat@conference.my.jabberserver.lan" >

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

</xmpp:receiver>

Links

Smack API the client side XMPP API
OpenFire the GPL Jabber server

Child pages

servicemix-xmpp