PRAGMATIC BUSINESS VALUE OF USING SERVICE ORIENTATED ARCHITECTURE AND IMPLEMENTING AN ENTERPRISE
PRAGMATIC BUSINESS VALUE OF USING SERVICE ORIENTATED ARCHITECTURE AND IMPLEMENTING AN ENTERPRISE SERVICE BUS black marble the strategic IT asset for your organisation Robert Hogg FBCS, CEng Senior Architect Black Marble LTD black marble Agenda • • • • • What is SOA? Connecting Systems Demo Governance Getting the Return black marble black marble Key Business System Drivers Businesses need: • Flexibility • • • • Agile Systems Rapid Development Cycle Extensibility Collaboration – local/national/global • Rigidity • • • • black marble Reliability Concrete Guarantees and Risk Management Compliance with governance SOA Terminology Two Definitions of SOA • Service Oriented Architecture: a software design approach in which key functions are built as reusable components which implement industry standards for interoperable communications. • Service Oriented Architecture: enables loose coupling, interoperability, management of change, and operation of business services in a governable environment. Business Services operating in a well run SOA can be composed into business process that align IT with the business. black marble State of SOA • Perceptions – SOA = IT centralization/standardization – “SOA is dead” (Anne Thomas Manes, Burton Group; January 2009) – Cloud computing will replace SOA • Reality – – – – SOA does not solve all enterprise IT issues SOA is complex, and difficult Core value of SOA is agility, but needs vary SOA demands change, but organizational resistance is often the biggest impediment – Need to focus on architecture, not technology black marble SOA Manifesto Service orientation is a paradigm that frames what you do. Service-oriented architecture (SOA) is a type of architecture that results from applying service orientation. Business value over technical strategy Strategic goals over project-specific benefits Intrinsic interoperability over custom integration Shared services over specific-purpose implementations Flexibility over optimization Evolutionary refinement over pursuit of initial perfection . black marble The Benefits of SOA • Align Business and IT • Increase Agility • Reduce Costs BUSINESS BUSINESS R&D Focus on document Focus exchange on Processes service Business Business model model Service model Technology model Soft boundaries (process and services) Technology model IIS Siebel Outward Inward businesstechnology driven driven viewview black marble Requirements Business and solutions siloed by IT closely aligned TECHNOLOGY TECHNOLOGY Services Tandem AS400 Solutions Focus impose on constraints contract Applications Source: Dr Arvindra Sehmi Common Myths about SOA Myths Facts 1. SOA is a technology 1. SOA is a design philosophy independent of any product technology or industry trend. 2. SOAs require web services 2. SOAs may be realized via web services but using web services will not necessarily result in a SOA. 3. SOA is new and revolutionary. 3. EDI, CORBA, and DCOM were conceptual examples of SOA. 4. SOA ensures the alignment of IT and business 4. SOA is not a methodology 5. A SOA Reference Architecture reduces implementation risk 5. SOAs are like snowflakes, not two are the same. 6. SOA requires a complete technology and business process overhaul black marble 7. We need to build a SOA 6. SOA should be incremental and built on your current investments. 7. SOA is a means, not an end. Common Myths about SOA #2 Myths Facts SOA begins at the firewall SOA begins at the firewall SOA Aligns the Business With IT People Align Business With IT SOA Governance Fixes Everything Governance needs to span all of IT, not just SOA black marble CONNECTING SYSTEMS black marble the strategic IT asset for your organisation Connecting Application is Not Enough Point-to-Point Integration Inhibits Agility Java Appl. Service • Point-to-Point – – – – Complex Interface Redundant Logic Doesn’t Scale Lacks Visibility • Business Impact – Delays Response to changing business needs black marble .Net Appl. Service SAP Service Oracle Service JD Edwards Service MS CRM Service CICS Service AS/400 Service “End Point/Service Oriented Spaghetti” Even a few dozens of services pose quite a plumbing challenge! Guess how many Service Providers and Consumers black are in this Spaghetti? marble 15 Service Providers 22 Service Consumers Introduction to ESB “A Web-services-capable infrastructure that supports intelligently directed communication and mediated relationships among loosely coupled and decoupled biz components.” - Gartner Group black marble Enterprise Service Bus (ESB) BizTalk was positioned as a Hub and spoke Static Schema Static Receive Port made and Most decisions are Hard Coded Map Name locked in at Design time or at Deployment not at Run time! Any change is a re-development or a system re-configuration! We’ve allowed the easy to use Static Send Port CRM tools to define our architecture Static Schema black marble Now we’re saying it can be an Enterprise Service Bus? We need to agree on what an Enterprise Service Bus is and what it does. • • • • • Message Broker Message Transformation Message Validation Adaption Message-Oriented Middleware Service Orchestration black marble ESB Core • Configurable, reusable architecture • Addresses common concerns generically - Routing, Transformation, Exception Handling, Monitoring etc. • Enforces Consistency and Unification • Leverages modern Standards (WS-*), still supports Legacy • Central point for Service Monitoring and Administration • Increases agility (through added Abstraction, Loose coupling) • Faster implementation times (through Configuration vs. Coding) black marble Agility thru Service Composition Enterprise Service Bus Service Consumer Service Consumer Service Consumer Location & Version Transparency Transport Protocol Conversion Data Format Transformation Invocation & Orchestration Error Handling & Repair Service Provider Service Provider black marble Message Interactions Support Service Provider Relevant Pattern Implementation ESB Guidance ESB Usage Patterns Message Routing Message Transformation Message Router Perimeter Service Router Content Enricher Message Broker Content-Based Router Data Model Transformation Data Format Transformation Scatter-Gather Recipient List Routing Slip Repair and Resubmit black marble ? Architectural Design Patterns Metadata Centralization Policy Centralization Rules Centralization Event-Driven Messaging Gateway Reply ? Forward VETO/VETRO Protocol Bridge Legacy Wrapper ESB Toolkit - New Abstraction Layer on Top of BizTalk Declarative, Meta-data, Policy and Configuration –Driven. 1. 2. 3. 4. Transform my message Determine which endpoint I need Route my message Route the response to a second service 5. Return the final result to me Transform my message Routing Transform Service Process Orchestration On Ramp Service Consumers Off Ramp Protocol Adaptation Pub/Sub Service Resolve a service end point address for me black marble End Point Resolution Service Providers Microsoft ESB Guidance Architecture Web Services On-ramps BizTalk black marble Exception Itinerary Services Resolvers Adapters Management Portal Off-ramps BizTalk ESB Toolkit Architecture ESB Management Portal Core Web Services Transformation Web Service Resolver Web Service Provisioning Framework ESB Toolkit Core Itinerary Services Exception Web Service Operations Web Service UDDI Web Service Transform Service Generic SOAP Receive Pipeline Generic WCF Receive Pipeline Generic JMS Receive Pipeline Custom Receive Custom Pipeline Custom Service Resolver-Adapter Provider Framework Adapter Providers(…) Exception Management Framework Exception Logger On-Ramps Alerts Route Service Resolvers (…) BizTalk Receive Ports Reports Fault Processor UDDI 3.0 Exception Handler BAM Business Rules Engine Exception Management Store BizTalk Send Ports Off-Ramps Pipeline Generic SOAP Send Pipeline Generic WCF Send Pipeline Generic JMS Send Custom Pipeline Custom Send Transformation Engine Orchestration Engine black marble Itinerary Store BizTalk Pub/Sub Engine The Core ESB Toolkit Components Itinerary Services: Message Processor Itinerary Mediation Policy Resolvers: Context Finder black marble Adapter Providers: Adapter Properties Itinerary Concept • This is the heart of ESBG – Allows us to implement the ESB pattern as opposed to a Hub/Spoke pattern • It provides the runtime flexibility that BizTalk doesn’t have by default black marble Itinerary Concept Logical overview Itinerary Message body Generic OnRamps Itinerary Mechanism Itinerary Processing Route Route Transfor m Messaging Base ESB Services Orchestration Based ESB Services MessageBox black marble Transf orm Itinerary Cache Three Ways to Assign Itineraries Advanced Service Client Adaptive Service Client Service Proxy black marble Client sends an itinerary in a WCF/SOAP Header request Client resolves itinerary via resolver service and then sends it in a WCF/SOAP Header request Itinerary is resolved on the server’s ESB On-Ramp receiving port via configurable resolver Itinerary Based Routing & Processing The “heart” of the ESB Toolkit • Light-weight service sequencing & composition – Invokes itinerary (internal) and external services – Dynamic service context resolution at runtime • Maps internal service invocation to BizTalk service containers – pipelines in ports and orchestrations. black marble BizTalk Receive Port On Ramp Receive Pipeline Pub/Sub Engine BizTalk Orchestration Routing Service ItineraryService1 Resolver Resolver1 Resolver1 Adapter Provider Pub/Sub Engine BizTalk Dynamic Send Port Pipeline Off Ramp Send Itineraries Deployment Design Time Test/Run Time Message OnRamp Itinerary Itinerary Selector XML File Itinerary Repository black marble BizTalk Deployment Tools Itinerary & Message Itinerary Repository ESB Processing Resolvers For runtime flexibility services are not hardcoded to specific endpoints or maps Service end-point metadata can be determined at runtime Resolvers are called by services to set an artifact (map , itinerary) or endpoint metadata black marble ESB Toolkit Resolver • Can resolve: – – – – – Message delivery endpoints Maps for transformations Endpoint configuration Custom service metadata Itinerary to be associated with a message • Endpoint/Map resolution with: • • • • UDDI 2.0/3.0 XPATH Static Business Rules Engine (BRE) • Itinerary resolution with: • Itinerary (BRE) • Itinerary Static black marble Resolver Mechanism Rules Engine Service Registry Static SQL Database UDDI BRE XPath WSMEX A resolver configuration string contained within the itinerary is provided to the resolver manager ESB Services Resolver Manager Resolver Mechanism black marble The resolver mechanism is able to load different resolvers based on where the runtime data is stored ESB Resolvers ESB Resolvers Endpoint Resolution Artifact Resolution UDDI 2.0 Static Static BRE XPATH BRE Itinerary - BRE Itinerary - Static UDDI 3.0 ESB Guidance V1 ESB Toolkit V2 black marble ESB Adapter Provider • The following Adapter Providers supplied: – WCF-BasicHTTP – WCF-WsHTTP – WCF-Custom • WCF-SQL – – – – FTP WebSphere MQ File SMTP • Custom – any BizTalk adapter (that support dynamic ports) can be exposed as an adapter provider black marble ESB Adapter Providers ESB Adapter Providers FTP WCF-BasicHTTP WCF-Custom WebSphere MQ WCF-WsHTTP SMTP WCF-SQL File Custom ESB Guidance V1 ESB Toolkit V2 black marble ESB Exception Management Portal black marble DEMO black marble GOVERNANCE black marble SOA Governance Architecture IIS Web Service On-ramp ESB Core Services Management Point Publish/Subscribe Infrastructure Off-ramp Virtualize d Service Governance Server Security Enforcement Service Registry Service Metrics Collection SLA Enforcement Governance Portal black marble Service Configuration Metrics Reporting Metrics Reporting Service Lifecycle Management Physical Service ESB Governance Integration • Integrated with governance solutions from AmberPoint and SOA Software • Specific functionality varies by governance provider, but typically include: – Service metrics – Policy-driven security – Policy-driven service-level agreement – Alerting black marble Defining Solutions As A Set Of Capabilities Service Consumer black marble 1. 2. 3. 4. Transform my message Determine which endpoint I need Route my message Route the response to a second service 5. Return the final result to me WSDL Schema Routing Mapping Service Process Orchestration Protocol Adaptation Pub/Sub Service End Point Resolution WSDL Schema GETTING THE RETURN black marble the strategic IT asset for your organisation Business Value • Broaden availability of Information and Capability • Exception based processing • Shorten business process cycles • Regulatory compliance • Alignment of systems with the business black marble Limitations • Not all Capabilities are modular • Issues over Transfer of Control and Ownership • Modelled process do not implement all activities, e.g. Human intervention • Difference between managing documents and business processes black marble Road to failure about for Implementing SOA • Typically a one or more of: – Lack of Comprehension of Business needs. – IT first Design. – Poor Management. – Poor implementation. – No Need for SOA black marble Key Lessons • Critical to have a single shared vision by business and IT • Enterprise logging and monitoring critical for finding and resolving problems • Apply Solid change management – Test Change Management before initial rollout • Governance, Governance, Governance • Consider an Agile rollout but do it well. • After Rollout keep talking to the business and keep the value of the investment visible by showing agility. black marble Enterprise Service Bus - Summary What it gives you… Loosely coupled messaging environment Policy driven message level routing and mediation Itinerary based processing Why you want it… Higher levels of reuse Lower operational costs Dynamic business changes Business and exception analytics Business requirements in the drivers seat black marble Where Next? • Online content – http://www.msdn.com/esb – http://www.codeplex.com/esb – http://www.soa-manifesto.org/ black marble How to Contact Us 01274 841305 www.blackmarble.com [email protected] @blackmarble black marble APPENDIX black marble the strategic IT asset for your organisation Endpoint Metadata Version Policy Schema Metadata black marble UDDI Repository Endpoint A Intelligent Routing Endpoint C black marble UDDI Repository Endpoint B Endpoint A Transformation Endpoint C black marble UDDI Repository Endpoint B Endpoint A Orchestration Endpoint C black marble UDDI Repository Endpoint D Endpoint B Endpoint A Adaption .NET Application black marble Mainframe Application Web Service Endpoint Database J2EE Application Vertical Market Application Message Exchange Patterns Synchronous Service black marble Publishing/Subscribe Service Service Consumer Asynchronous Service
© Copyright 2024