Transaction Routing

Transaction Routing

Transaction routing is a process that allows cooperative flow data to be routed from a Distributed Process Client (DPC) to a Distributed Process Server (DPS). The selection of the target environment hosting the DPS can be programmatically selected.

In a CA Gen Distributed Processing environment the Client Manager supports and implements an optional transaction routing facility implemented using a Directory Services user exit. The name of the user exit dll and the associated transaction code data file are configurable by using the Client Manager File – Setup dialog.

The following terms are used when discussing transaction routing:

• Directory Services DLL—An optional Client Manager user exit dll that implements the transaction routing routines (described in detail within this chapter).
• Transaction code—A character string assigned to a procedure step and associated with a transaction request.

  Note: For information about defining and the usage of Transaction codes, see the Workstation Construction User Guide and the Client Server Design Guide.

• NEXTLOCATION—An attribute defined in a Procedure Action Diagram (PrAD) and used in conjunction with the Directory Services user exit.

  Note: For more information about the setting and usage of the NEXTLOCATION attribute, see the Action Diagram User Guide.

• Default Server—A configured target server that identifies a specific server configuration entry that operates as the default destination server. The setting of a Default Server plays a role in transaction routing, however, it is not required that a Default Server be specified.

A DPC application has the option of using the Client Manager to process a cooperative flow request. The cooperative flow data contains a destination transaction code, the value of NEXTLOCATION, control data, and application view data. Client Manager transaction routing can make use of the transaction code and NEXTLOCATION values to determine which server should receive the current cooperative flow request.

More information:

User Exits

General Configuration