distributed account management middleware
DESCRIPTION
Distributed Account Management Middleware. Glenn Bresnahan (PI), Boston University Steve Quinn (CoPI), NCSA Aaron Fuegi, Boston University Chris Pond, NCSA Michael Shapiro, NCSA Ester Soriano, NCSA. Objective. - PowerPoint PPT PresentationTRANSCRIPT
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Distributed Account Management Distributed Account Management MiddlewareMiddleware
Glenn Bresnahan (PI), Boston University
Steve Quinn (CoPI), NCSA
Aaron Fuegi, Boston University
Chris Pond, NCSA
Michael Shapiro, NCSA
Ester Soriano, NCSA
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ObjectiveObjective
Provide mechanisms to allow for the automated management of resource allocations, resource access control, user information, user login accounts, and usage reporting in a grid environment spanning multiple administrative domains
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BackgroundBackground
Alliance partnership (PACI)– NCSA, Boston, Kentucky, New Mexico,
Wisconsin, MauiNSF PACI Allocation Peer Review
(NRAC and AAB) Manage accounts, allocations and
reporting across Alliance resources
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RequirementsRequirements
Compatible with current practices (e.g. PACI)
Independent of local account management system
Heterogeneous environmentMultiple administration domains Economic model neutral
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StrategyStrategy
Provide grid services to exchange and manipulate shared accounting objects– Resource requests– Resources allocations– User information – Project/group information– Access permissions– Usage reports
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AMIE Data RepresentationAMIE Data Representation
XML schema for Accounting Objects–Machines– Users– Accounts– Allocations– Usage
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AMIE ArchitectureAMIE Architecture Transaction-based exchange mechanism
– Transaction comprised of sequence of packets (messages) and acknowledgements
Sites send Requests and Notifications– Site A requests site B to perform an action– Site B notifies site A of actions taken
• Independently or as the result of a request Set of objects and states
– Well defined state change sequences Robust error detection and recovery Asynchronous or real-time communication
– No transport reliability assumptions “Glue” modules to interface to site-specific
accounting system
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Configuration: Star Configuration: Star
Central AccountData Base
Central AccountData Base
RemoteSite
RemoteSite
RemoteSite
RemoteSite
RemoteSite
RemoteSite
RemoteSite
RemoteSite
AMIEAMIE
AMIEAMIE AMIEAMIE
AMIEAMIE
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Configuration: Peer to Peer Configuration: Peer to Peer
Site ASite A Site BSite BAMIEAMIE
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Current ImplementationsCurrent Implementations
Alliance Partner Sites (Version 1) Alliance Grid Testbed (Version 1) Teragrid (Version 2 – NMI) NEES Grid (Version 2 – NMI)
(implementation in progress)
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Transaction Example 1Transaction Example 1Account CreationAccount Creation
Local Site Central Databaserequest_account_createrequest_account_create
inform_transaction_completeinform_transaction_complete
acknowledgeacknowledge
notify_account_createnotify_account_createacknowledgeacknowledge
data_account_createdata_account_createacknowledgeacknowledge
acknowledgeacknowledge
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Transaction Example 2Transaction Example 2Modify User InformationModify User Information
Local Site Central Databaserequest_user_modifyrequest_user_modify
acknowledgeacknowledge
notify_user_modifynotify_user_modifyacknowledgeacknowledge
inform_transaction_completeinform_transaction_completeacknowledgeacknowledge
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Transaction Example 3Transaction Example 3Usage ReportingUsage Reporting
Local Site Central Databasenotify_project_usagenotify_project_usage
acknowledgeacknowledge
inform_transaction_completeinform_transaction_completeacknowledgeacknowledge
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Transaction StatesTransaction States
Four possible states1. On-holdOn-hold - Waiting for another event. No
further action should be taken until state changes.
2. In-progressIn-progress – processing is underway3. CompletedCompleted – processing completed4. ErrorError – processing failed. More
information is available via the packet state
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Transaction Packet States Transaction Packet States Incoming PacketsIncoming Packets
ConstructConstruct – Message being assembled ReceivedReceived – Complete and ready to be
processed ValidateValidate – Waiting for XML validation InboxInbox – Waiting to be put into AMIE DB DoneDone – All processing sucessfully
completed ErrorError – Awaiting error notification to be
issued FailedFailed – Completed with failure
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Transaction Packet States Transaction Packet States Outgoing PacketsOutgoing Packets ConstructConstruct – Message being assembled ValidateValidate – Waiting for XML validation OutboxOutbox – Waiting to be transmitted SentSent – Sucessfully sent to remote site WaitWait – Waiting for a reply DoneDone – All processing sucessfully
completed ErrorError – Awaiting error notification to be
issued FailedFailed – Completed with failure
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AMIE Reference Implementation AMIE Reference Implementation
Site ASite A
Account ManagementData Base A
Account ManagementData Base A
AMIE Data BaseAMIE Data Base
TransactionsTransactions
Account ManagementSystem A
Account ManagementSystem A
AMIE MethodsAMIE Methods
Site BSite B
Account ManagementData Base B
Account ManagementData Base B
AMIE Data BaseAMIE Data Base
TransactionsTransactions
Account ManagementSystem B
Account ManagementSystem B
AMIE MethodsAMIE Methods
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Current StatusCurrent StatusItems CompleteItems Complete
Core AMIE systemXML SchemaXML validationMethod call interface specificationTransport/processing engineState trackingError handlingTestbed Implementation
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Current StatusCurrent StatusReference ImplementationReference Implementation
Reference implementation of AMIE method call interface
Relational "intermediate DB" schema (Oracle, Postgres, Sybase support) to interface AMIE to local AM system
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Current StatusCurrent StatusIn DevelopmentIn Development
Reference implementation of Account Management system– fully functional AM DB Schema–method call implementation– glue between AM system and AMIE
implementation– Should be "drop in" AM system with grid
capability through AMIE
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Current StatusCurrent StatusPackagingPackaging
Core implementationReference implementation of method
call interfaceReference AM implementationDocumentation
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Distributed Account Management Distributed Account Management
Questions?