z390 Service Oriented Architecture Application Generator Support
System Oriented Architecture (SOA) is a software design model to address the need to share and reuse application components across diverse applications and network users (see references). z390 now includes tools to enable users to generate low level SOA type z390 client server assembler applications which run on any platforms supporting J2SE and TCP/IP sockets. No other frameworks or languages such as XML or C are required.
Starting with v1.3, z390 includes a new TCPIO macro to support client and server TCP/IP messaging using sockets via SVC X'7C'. z390 servers can issue OPEN to listen for messages from clients on a specified port. z390 clients can issue OPEN for specific HOST port to connect and SEND and RECEIVE messages from the server.
A z390 demo application consisting of a main program DEMOMAIN.MLC which calls 2 subroutines DEMOSUB1.MLC and DEMOSUB2.MLC are included in new SOA directory. As a base line, the demo can be assembled, statically linked, and executed locally using the command SOA\DEMO\DEMOSTD.BAT. Then the demo can be converted to an SOA client server application, assembled, linked, and executed using the command SOA\DEMO\DEMOSOA.BAT. The demo SOA application generation is driven by the user defined SOAGEN macro call:
SOAGEN MAIN=DEMOMAIN, MAIN CLIENT APPLICATION PGM
The z390 SOA application generation macros create the following source files from the above:
The z390 SOA generated command DEMOBLD.BAT builds the following executables:
The demo SOA client server application has been run on single CPU, local LAN connected client and server PCs, and again on wireless LAN connected client and server PC's to generate initial z390 SOA Demo Timing Statistics showing that after initial transaction, the average overhead for the z390 SOA TCP/IP messaging is about 2-3 milliseconds. For complex services performing I/O to databases, this overhead is relatively negligible compared to the major benefit of simplifying the sharing and maintenance of services across diverse applications and users. Future plans for z390 enhancements will include support for XML and registry type services to provide unit test environment for higher level SOA type application components.
This page last updated
Tuesday May 20, 2008.
Copyright 2006 Automated Software Tools Corporation