1. OGSA information services
Hiro Kishimoto
GGF11

2. Big Picture for OGSA information services
Supply side
Resource
Manager
Logging
Service
Scheduler
Message
Broker
Metering
Service
Directory
Service
OGSA
Services
Platform
Services
Platform
information
services
Producer
Consumer
OGSI / WSRF
extent
use

3. Platform Information Services
There are common producer and consumer interface
Core proposal from GMA group
Requirements listed in Abdeslem’s doc
Common interfaces which are extended (inherited) by higher level services
Platform
Services
Platform
information
services
Producer
Consumer
OGSI / WSRF

4. OGSA service extents platform information services
Service A extents supplier service
Service C extents consumer service
Service B extents both supplier and consumer service A B C
OGSA
Services
extent
use
Platform
Services
Platform
information
services
Supplier
Consumer
OGSI / WSRF

5. Intermediary service (= OGSA information Service)
OGSA information services
Intermediary service has both supplier and consumer interface
Each service has different semantics (pattern) described in Bill’s slides
Each service has different QoS
Logging
Service
Message
Broker
Directory
Service
OGSA
Services
Platform
Services
Platform
information
services
Supplier
Consumer

6. Use relations between OGSA services
“Resource manager” registers resource information into “directory service”
“Scheduler” retrieves available resource information from “directory service”
“Resource manager” logs usage records into “logging service”
“Metering service” collects usage records from “logging service” for billing
(3)
Supply side
Resource
Manager
Logging
Service
Scheduler
(4)
Message
Broker
Metering
Service
(1)
(2)
Directory
Service

7. Logging service Logging service is fully defined by Bill’s document
Logging service extends both supplier and consumer interface
Logging service has its special requirements and interfaces

8. Event OGSA Standard event schema is necessary to define
Based on the event schema defined by WSDM-TC and CMM-WG
Logging service and message broker use OGSA event
No “event service”

9. Message plumbing Message service has two aspect
Plumbing include reliable delivery is binding (transport) issue and is not OGSA service
Additional messaging semantics is provided by “message broker” and is one of OGSA information service