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CASSO EIDE Overview - Western Electricity Coordinating …

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Overview of CASSO’s EIDE
Solution
Randy House
CASSO Corporation
Project Goals

Needed to replace WEIC X.25-based data links
– Low cost implementation
– An XML-based solution
– Retained PID functionality

Wanted to leverage work done on E-Tag project
– Known technology
– Quicker results

Target System
– CASSO’s Legacy system
CASSO’s EIDE Solution..

Our solution is comprised of three
main applicatioins…
– EIDE SoapServer
– EIDE Authority
– EIDE Sender
CASSO’s EIDE Solution

EIDE SoapServer Process
– Listener to receive inbound traffic
– Validates message against current EIDE
XML Schema (using MS XML Parser 4.0)
• If not “well-formed” then reject and send
error response.
• If “well-formed” then
– Send back OK response
– Determine EIDE method-type being requested.
– Dispatch message to EIDE Authority
CASSO’s EIDE Solution (cont.)

EIDE Authority Process
– Child process (a.k.a. “in-process server”) of
EIDE SoapServer process.
– Parses contents of received XML message into
appropriate “in-memory” structure for the
method being requested (For example: the
PutSchedule structure)
– Reads memory structure and
• Creates a flat file or,
• Redirects the XML message or,
• Populates directly into any ODBC-compliant
database.
CASSO EIDE Solution (cont.)

EIDE Sender process
– Handles all outbound EIDE traffic
– Parses data from flat file into appropriate “inmemory” structure.
• Data could come directly from a database.
– Formulates outbound XML message
– Places SMXP wrapper around XML message.
– Posts message request to appropriate URL
• URL determined from EIDE Registry lookup
– Waits for response message.
Data Flow Diagram…
The whole picture..
CASSO's
EIDE Data Link
Dataflow Diagram
Private
Private
Private
IP IP
Networks
Networks
IP Networks
Public
Internet
FTP SERVER
EIDE_SENDER
EIDE_SOAPSERVER
FTP get
EIDE_SERVER
IIS FTP SERVER
EIDE_AUTHORITY
FTP put
FTP put
SYS_EIDE Folder
EIDE_SENDER
EIDE_SENDER
CASSO's
Legacy System
(Batch Process)
Process)
(Batch
EIDE_WATCH
SYS_EIDE_SEND Folder
Various Interactive &
Detached
Processes
MWH
Data
MWH
Databases
The Guts of our EIDE solution…

The EIDE DLL (Dynamic Linked Library)
– Library of routines to create EIDE applications
with a few lines of code.

EIDE-specific parsing routine for
– EIDE XML Document creation
– In-memory data population and retrieval
– SMXP inbound/outbound message handling to
deliver EIDE contents to remote servers.
EIDE DLL (cont.)

May reference the EIDE DLL from any
visual language to create XML methods
and custom solutions.
 Contains EIDE registry object so you can
lookup entity URLs.
 Don’t need to know XML or SMXP
messaging.
 Could save several man-months
development time!
EIDE DLL (cont.)

EIDE DLL will…
– Validate inbound and outbound XML
message
– Determine and dispatch to appropriate
method handler.
– Parse and load “in-memory” structure
of ALL EIDE methods.
– Can write to DB or whatever.
– Formulate responses to caller.
EIDE DLL (cont.)
Has built-in FTP functions
 Written in MS VB 6
 Used in all EIDE applications
 Started to write EIDE SoapServer as
ASP.net Web Service.

– Current EIDE DLL worked fine.
EIDE DLL example..

Simple example using the PutSched
object:
–
–
–
–
–
–
PutSched.AccountCode = ‘5047028123’
PutSched.StartTime = ’2004-11-01T07:00:00z’
PutSched.StopTime = ’2004-11-01T08:00:00z’
PutSched.Quantity(1) = -25
PutSched.URL = ‘http://eide.cassocorp.com’
PutSched.Send
Questions????
For more information:
Randy House
CASSO Corporation
(509) 444-3557
rhouse@cassocorp.com
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