[PPT]webMethods Architecture - · Web viewBasic Concepts Of Architecture Message Delivery...
Transcript of [PPT]webMethods Architecture - · Web viewBasic Concepts Of Architecture Message Delivery...
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webMethods Architecture
By webMethods_KB
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EAI Architecture Concepts • Introduction
EAI IT Landscape Integration Evolution
• Basic Concepts Messaging Message Processing Message Delivery Message Sharing
• Higher Concepts BPM BAM
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Landscape
• Intranets
• Value Chain• Extranets
• Data Sources
• Customers
• Transactions
• Internet
• Networks
• Legacy Systems• Packaged Apps• Bespoke Apps
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Evolution Of Integration
• Flat files• Screen Scraping• API based
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Evolution Of Integration
• Loosely coupled• Message Oriented• Business Logic Layer
• Intelligent routing• Transformation• Transactions
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Evolution Of Integration
• Platform Agnostic• Standards Based• Distributed
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Basic Concepts Of ArchitectureMessaging
•MOM (Message Oriented Middleware) shields the inherent complexities like OS, Network topology and protocol, programming language from the applications•Application Communicate with each other using a series of messages.•Applications deposits (publish/request) and retrieve (subscribe/response) the
messages from queues (a special message holding area)
Message Processing
•Synchronous Processing•Asynchronous Processing – enables applications to immediately return to normal
processing after generating request without having to wait for
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Basic Concepts Of ArchitectureMessage Delivery
• Volatile – fast–Messages are stored in memory–Messages are lost if the system shuts down
• Guaranteed – slower–Messages are stored in a persistent queue–Messages are guaranteed to reach to its destination regardless of
network reliability, target system’s availability, bandwidth limitations
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Basic Concepts Of ArchitectureMessage Sharing - Publish and Subscribe
• Sending documents out for potential subscription (do not need to know who receives them)
• Published documents are routed to the subscribed clients• When a client publishes a document, a “subscription pointer” to the
document will be placed in the inbound queues of all subscribers• Each subscriber uses its pointer to extract a copy of the document from
the queue• There can be multiple subscribers to single published message
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Bus Architecture• Components
– Bus – Message/Service Bus (Backbone)– Service Nodes - Enterprise Applications
• CRM• ERP • Mainframe/Unix Applications• B2B Partner Applications
• Bus – Real-time Message Transport• Adapter - Connectivity to Applications
• Characteristics– Minimize point-to-point integration– Complex administration & management– Better scalability and performance.
• Examples: SeeBeyond, webMethods and Tibco
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BPM• The Process designer must be an easy-to-use and intuitive tool for process/business
analysts to completely describe a Process.
• Process Simulator enables the process analyst to perform as-if scenarios and to find out the bottle-necks in the process before deploying the process.
• Process Executor is the Engine which manages the behavior ( persistency, integrity and flow ) of the Process at run-time.
• Process Facilitator is the work-portal and it provides the interface for human interaction
• Process Monitor collects data on each process instance and allows the Business Owners to keep an eye on the Business Processes.
• Process Analyzer enables the business process / function owners to create multi-dimensional enterprise dash-board.
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BPM
• Facilitator
• Analyzer
• Developer
• Designer
• Simulator
• Executor
• Monitor
• Discover
• Analyze
• Control
• Improve
• Implement
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How it works ?
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BAM“BAM defines the concept of providing real-time access to critical business
performance indicators to improve the speed and effectiveness of business operations.”
• BAM is largely born-of, and is reshaping, two previously distinct technology markets: – Analytics and decision making of Business intelligence market– Real-time and business process linkage of Enterprise Application
Integration (EAI)• BAM focuses more on what is happening than on what has happened or
might happen• BAM sits in-between the historical and analytical focus of BI and the
forward business planning of Corporate Performance Management
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webMethods Product Suite
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webMethods Product Suite• This diagram provides logical view of recommended B2B solution
architecture I.e. there is no co-relation to the physical machines.
• Reverse Proxy Server – Use only for routing inbound documents. No need to open internal firewall ports to DMZ.
• Send outbound documents directly to Partner location (or DMZ file server for partners to pick up)
• Reverse Proxy Server – No need for IS clustering as the reverse proxy servers only route the documents to internal IS. Use pseudo-clustering
• Internal DMZ Facing IS Servers – In IS Cluster with shared Repository Server Configuration. Hosts Trading Networks packages and connects to a Trading N/w database.
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webMethods Product Suite• Trading n/w database – configuration information
- Partner Profile - TN Document type definitions (representing XML, Flat file, EDI, SWIFT) - Processing Rules [Routing] - Certificates
- runtime information … transaction analysis logs used for document tracking.
• Integration Server for Enterprise Application – Acts as adapter run-time for integration with enterprise applications.
As best practice, this IS may be on same machine as enterprise application or on a separate server close to the application.
The IS performs - operations on the end-application via adapters
- enables data exchange between the enterprise application and integration messaging backbone (broker)
- provides transformation of data from application format to canonical (and vice-versa).
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webMethods Product Suite• Audit Log database and Trading Networks database will be setup on
Oracle/SQL Server database instance.• Audit log – used to track execution of the services such as adapter
services, flow services as well as business processes on the integration servers.
• Messaging Backbone comprises of multiple broker servers in hardware cluster for high availability.
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Details @ SAG
• To get more detail on triggers, dispatchers, queues, document stores, storages, document types , etc … refer SAG documents.