...
WCF separates how service logic is written from how services communicate with clients. Bindings are used to specify the transport, encoding, and protocol details required for clients and services to communicate with each other. Qpid provide a WCF binding: org.apache.qpid.wcf.model.QpidBinding. WCF Services that use the Qpid binding communicate through queues that are dynamically created on a Qpid broker.
How to use Qpid binding
Service Implementation
WCF services are implemented using:
...
The following configuration file can be used to configure the a Hello Service:
Code Block |
---|
<configuration>
<system.serviceModel>
<services>
<!-- the service class -->
<service name="org.apache.qpid.wcf.demo.HelloService">
<host>
<baseAddresses>
<!-- Use SOAP over AMQP -->
<add baseAddress="soap.amqp:///" />
</baseAddresses>
</host>
<endpoint
address="Hello"
<!-- We use a Qpid Binding, see below def -->
binding="customBinding"
bindingConfiguration="QpidBinding"
<!-- The service contract -->
contract="org.apache.qpid.wcf.demo.IHelloContract"/>
</service>
</services>
<bindings>
<customBinding>
<!-- cf def of the qpid binding -->
<binding name="QpidBinding">
<textMessageEncoding />
<!-- specify the host and port number of the broker -->
<QpidTransport
host="192.168.1.14"
port="5673" />
</binding>
</customBinding>
</bindings>
<extensions>
<bindingElementExtensions>
<!-- use Qpid binding element: org.apache.qpid.wcf.model.QpidTransportElement -->
<add
name="QpidTransport"
type="org.apache.qpid.wcf.model.QpidTransportElement, qpidWCFModel"/>
</bindingElementExtensions>
</extensions>
</system.serviceModel>
</configuration>
|
Endpoints and bindings can also be set within the service code:
Code Block |
---|
/* set HostName, portNumber and MyService accordingly */
Binding binding = new QpidBinding("HostName", portNumber);
ServiceHost service = new ServiceHost(typeof(MyService), new Uri("soap.amqp:///"));
service.AddServiceEndpoint(typeof(IBooking), binding, "MyService");
service.Open();
....
|