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Hamid,
Useful work.
We just went live this week at NIH with the Grants.gov interface using
ebXML Hermes and WSDL - very similar to Figure 4 pattern.
The PPT describing this system is here:
Subtle differences to Figure 4 - a remote http form entry client sends a
binary upload to GGov system, then GGov uses Java programs to disassemble that
and create a SOAP package containing XML and PDFs from the binary. Then
WSDL request to GGov via their API to retrieve list of available transactions -
then WSDL to pulldown those individually - then the Hermes ebMS takes over and
does the actual dispatch using staged delivery - so you can control the flow of
transactions to the backend processing. Once that is done - then
confirmation done to GGov.
It sounds complicated - but conceptually its like creating a reservoir for
the WSDL rivers to pour into. Then the ebMS acts like the dam and controls
the flow to the downstream systems. Its extremely flexible and allows you
to manage the exchanges so if any part fails the user is unaware - the
"reservoir" pools the transactions until the downstream system is able to
continue processing.
An alternative pattern is to have a Hermes client situated on the desktop
co-located with the http form client - and instead of uploading to GGov -
simply doing http via [localhost:8888] to the Hermes client - the client can
then do staged delivery to the main Hermes delivery server.
In this second model you can use the Registry to manage certificates issued
to the Hermes client for authentication.
This seems cleaner - especially as currently GGov has a complex 5 step
authentication process via third parties for participants. Using the
registry and certificates would make that just a one-step.
DW
----- Original Message -----
Sent: Friday, November 18, 2005 5:44
PM
Subject: [ebsoa] [ebsoa]: FW: the
Versatile B2B gateway
This is from
Jacques.
From: Jacques
Durand
Sent: Friday,
November 18, 2005 2:27 PM
To:
Hamid Ben Malek
Subject: FW: the Versatile B2B
gateway
Hamid:
Can you take care of
submitting this to ebSOA list? It appears it did not make it to their archive
– I did not have the right to post I guess.
-Jacques
From:
Jacques Durand
Sent: Tuesday, November 15, 2005 12:10
PM
To: 'John Hardin';
ebSOA
Subject: the Versatile
B2B gateway
Contribution to OASIS / ebSOA,
attached.
-Jacques
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