Appendix A. FUSE Services Framework Message Processing Phases

Inbound phases

Table A.1, “Inbound Message Processing Phases” lists the phases available in inbound interceptor chains.

Table A.1. Inbound Message Processing Phases

Phase	Description
`RECEIVE`	Performs transport specific processing such as determining MIME boundaries for binary attachments.
`PRE_STREAM`	Processes the raw data stream received by the transport.
`USER_STREAM`
`POST_STREAM`
`READ`	Determines if a request is a SOAP or XML message and builds adds the proper interceptors. SOAP message headers are also processed in this phase.
`PRE_PROTOCOL`	Performs protocol level processing. This includes processing of WS-* headers and processing of the SOAP message properties.
`USER_PROTOCOL`
`POST_PROTOCOL`
`UNMARSHAL`	Unmarshals the message data into the objects used by the application level code.
`PRE_LOGICAL`	Processes the unmarshalled message data.
`USER_LOGICAL`
`POST_LOGICAL`
`PRE_INVOKE`
`INVOKE`	Passes the message to the application code. On the server side, the service implementation is invoked in this phase. On the client side, the response is handed back to the application.
`POST_INVOKE`	Invokes the outbound interceptor chain.

Outbound phases

Table A.2, “Inbound Message Processing Phases” lists the phases available in inbound interceptor chains.

Table A.2. Inbound Message Processing Phases

Phase	Description
`SETUP`	Performs any set up that is required by later phases in the chain.
`PRE_LOGICAL`	Performs processing on the unmarshalled data passed from the application level.
`USER_LOGICAL`
`POST_LOGICAL`
`PREPARE_SEND`	Opens the connection for writing the message on the wire.
`PRE_STREAM`	Performs processing required to prepare the message for entry into a data stream.
`PRE_PROTOCOL`	Begins processing protocol specific information.
`WRITE`	Writes the protocol message.
`PRE_MARSHAL`	Marshals the message.
`MARSHAL`
`POST_MARSHAL`
`USER_PROTOCOL`	Process the protocol message.
`POST_PROTOCOL`	Process the protocol message.
`USER_STREAM`	Process the byte-level message.
`POST_STREAM`	Process the byte-level message.
`SEND`	Sends the message and closes the transport stream.

Important

Outbound interceptor chains have a mirror set of ending phases whose names are appended with _ENDING. The ending phases are used interceptors that require some terminal action to occur before data is written on the wire.