Improving pS-PS Service Architecture , perfSONAR-PS Developers Meeting Aaron Brown, Andrew Lake, Eric Pouyoul

Problems – It’s difficult to add new metrics, or build new services using the existing architecture. – There is duplication of effort between service implementations which can lead to inconsistency between services. Goal – Improve Code Reuse – Increase modularity – Cordon off outside dependencies – Ease development of new services, or new metrics for existing services – Improve performance, or minimize the performance impact 2 – 10/22/2015, © 2009 Internet2 pS-PS Service Architecture

Short Term Tasks – Develop a list of services to support, and document the commonalities between them – Look to existing projects (e.g. OSCARS) for ideas on how to better modularize the codebase – Begin design of new service architecture 3 – 10/22/2015, © 2009 Internet2 pS-PS Service Architecture

Measurement Archives – Registers metadata with a lookup service – Accepts requests Retrieve metadata Retrieve data Store metadata Store data – Allows for authentication/authorization Measurement Points – Registers its presence with a lookup service, and possibly where it can test to – Accepts requests Request measurement Initiate measurement Retrieve results of measurement – Allows for authentication/authorization 4 – 10/22/2015, © 2009 Internet2 Types Of Services

Global Lookup Service – Exchanges summaries with other gLSes – Accepts requests Retrieve lookup service containing information on IP, domain, keyword. Retrieve a summary of all lookup services known to the gLS – Allows for authentication/authorization(?) Home Lookup Service – Registers its presence with gLSes – Accepts requests Request a service containing some metadata Request metadata from a given service Store a service’s metadata – Allows for authentication/authorization Transformation Service Others? 5 – 10/22/2015, © 2009 Internet2 Types Of Services

New Measurement Metrics – Highly likely New Measurement Points – If we have AA, highly likely New Transformation Services – Unknown Lookup Service? – It is unlikely that we would have a variety of lookup services in the same way we support a variety of metrics or a variety of measurement points 6 – 10/22/2015, © 2009 Internet2 Likely New Functionality

Authentication/Authorization Lookup service registration (and maintenance) Schema parsing Message handling Response construction Others? 7 – 10/22/2015, © 2009 Internet2 Common Components

8 – 10/22/2015, © 2009 Internet2 OSCARS Notification Broker Forward Notifications AuthN Authentication Path Setup Network Element Interface Coordinator Workflow Coordinator PCE Constrained Path Computations Topology Bridge Topology Service WS API Manages External WS Communications Resource Manager Manage Reservations Auditing Lookup Lookup service AuthZ* Authorization Costing Web Browser User Interface

Expect research projects may replace some modules – PCE – Path Setup Libraries provided by OSCARS – Currently only have Java – CXF based classes for message parsing – Threading of asynchronous requests – Business logic up to developer Still a work in progress 9 – 10/22/2015, © 2009 Internet2 Developing New OSCARS Services

10 – 10/22/2015, © 2009 Internet2 Sample Component Breakout Authentication Measurement Point Service Coordinator Metric Database Measurement Archive WS API Manages External Communication Lookup Service Registration Authorization Tool Backend Lookup Service Backend

Integration of Authentication/Authorization Backward compatibility Self-update functionality 11 – 10/22/2015, © 2009 Internet2 Other Open Design Questions

Improving pS-PS Service Architecture , perfSONAR-PS Developers Meeting Aaron Brown, Andrew Lake, Eric Pouyoul For more information, visit 12 – 10/22/2015, © 2009 Internet2