Each of these technologies has implemented a Stock trader application with Business Service, Order Processor and Trader Client components. You will be able to assemble the application by mixing components from any of the above implementations.
It provides you a great sample on using basic web services features (SOAP, WSDL etc..) and WS-Security across the above platforms.
Are you curious What SOA is? Or How SOA revolutionize Enterprise technologies in recent times? Here is a great opportunity to you.
WSO2 is hosting a SOA Summer School for Free, starting from 18th June. It will enlighten you on different aspects of SOA like SOA in Enterprise, Scalable SOA, SOA with Security, SOA Governance, SOA in ESBS, BPMs and many more.
For more details visit the official page for the WSO2 SOA Summer School in here, http://wso2.org/training.
Early this year, WSO2 released a complete SOA platform, introducing a revolutionary solution to adapt SOA in more flexible and cost-effective manner. It is developed based on the OSGI technology, which allow users to get only the desired components to their requirements and implement their SOA infrastructure. As the requirements grow or change, they can add/upgrade/drop only the relevant component(s) to adjust to their new requirements.
In fact rather than releasing each components separately, WSO2 released few products, pre-bundling some of these components.Those are,
WSO2 WSAS – Allows you to consume create and host web services.
WSO2 ESB – Complete ESB functionality including message routing, mediation
WSO2 BPS – Orchestrate business processes with WS-BPEL
Note that you can always start from one of above and then mix and match among these components until you get the desired features, as explained in my previous blog The Composable SOA Platform.
One of the common component bundled in all of these is the “Registry Core”. It acts as a unified repository for all the storage requirement of the SOA platform. It stores,
Service descriptions, policies
Configurations of modules (e.g. Security module, Reliable Messaging module, etc..)
Configurations of transports
Configurations of data sources, event sources, connections
Proxy Services, Sequences, Endpoints +Â the keys (xslts, schemas) needed in mediator configurations.
In order to deal with these requirements Registry provides functionalities to
Store/Retrieve resources.
Organize resources in to collections(collections are also considered as resources) in hierarchical manner. (Like directories in a file system)
Search resources. (content based search or using custom queries)
Tagging, commenting and rating resources
Keeps associations, dependencies among resources
Support for resource versioning.
Monitors activities.
So how you going to use the registry. In fact you can access a registry in different ways. It has
Nice web based GUI to explore/add/remove/update resources
APIs to embed the Registry to your java program.
APIs to access Registry remotely using Atom/pub and web services. Atom clients are also available in C and PHP to access registry.
The another very important aspect of the registry is that who has the permission to view/add/delete resources. For that, registry uses ‘User Manager’ component which allows you to handles the permission in user based and role based schema.
In addition to all of these functionalities, it provides you two different ways to extend the functionalities of the registry.
Handlers
Aspects
Please look at this article on “Extending WSO2 Registry” for a comprehensive guide on this subject.
The capabilities of the registry are not just limited to act as a repository, but also it can be used as the base for govern the entire SOA platform. The following aspects of the SOA governance can be solved based on a Registry.
Service discovery
Service policy enforcement and validation
Service Life Cycle Management
Promote or Demote services with a proper criteria (e.g using a checklist)
Service association and dependency management
Service Monitoring
Service Access Control
Service Versioning
You can read how to implement SOA Governance with the Registry 1.1 (An Older version of Registry) in more detail, from this article “SOA Governance with Registry 1.1“.
WSO2 is preparing to release the WSO2 Governance Server that provide a solution to all of these SOA Governance requirements. It will extend the registry features and UI by introducing more views towards SOA Governance.
So you can use WSO2 Registry for all your repository requirements + as a tool to help you govern your SOA in your enterprise.
The release of WSO2 SOA platform – Carbon has unified the process of development to deployment of SOA in several aspects. Here is a list of 5 aspects unified across all the components of the SOA platform namely WSAS (The App Server), ESB (Enterprise Service Bus) and BPS (Business Process Server)
1. Unified QoS configurations – Allows you to add/drop modules for security, reliability, etc of your services + edit their policies in a unified view.
2. Unified Registry Storage – Provides a unified view over the governance of the SOA platform.
3. Unified Trackers – Availability of logs, statistics, graphs and message tracers making it easy to debug and test your system.
4. Unified User Experience – Well designed unified User interfaces allowing admins/users to get familiar with each of the components very quickly and easily.
5. Unified Extensibility – The underline OSGI environment and the design of the carbon platform itself make it possible to add new OSGI bundles as extensions to fit equally across all the products.
Application Server (WSO2 WSAS) – Enables you to provide and consume web services
Enterprise Service Bus (WSO2 ESB) – Enables you to mediate web service interactions
Business Process Service (WSO2 BPS) – Enables you to orchestrate services for your business process.
Registry (WSO2 Registry) Enables you to store and govern your resources.
The uniqueness of WSO2 platform is that it provides you the freedom to mix and match these components according to your requirements. Paul Fremantle, CTO of WSO2 describes this as a Composable SOA platform. You can drop ESB component to BPS instance to add mediation capabilities to your business process server or the other way around.
In the following screencast Ruwan Linton – Product Manger of WSO2 ESB explains how to get the mediation capabilities inside a web service application server, putting ESB component in to WSO2 WSAS and demonstrating their integrated operations.
WSO2 has announced the release of WSO2 Mashup Server 1.5.2. This release introduced the support for Data Services (Exposing Database, Excel sheet, CSV as a service), Open ID Logins and personalized dashboards to manage mashups and some security improvements. Just have a look at the release note for all the details about the new features, fixes of the release.
WSO2 Mashup Server enables you to develop your enterprise mashups very easily. You will write your code for the mashups in javascript with the full help of integrated javascript objects to consume Web services or Atom feeds, manage sessions, scrape web pages and manipulate storage. Once your put your .js file in to the mashup server repository, your services automatically will have the WSDLs, ‘Try It’ functionality and SOAP, REST interfaces.
If you are new to Mashup Server or to develop Mashups, just have a look at the series of screenshots released by WSO2 sometime ago. That will no doubt take you from zero knowledge to a comfortable state to write full-fledged mashups.
In this case study “ PHP Data Services Extract Content from Drupal Database“, I intended to present how Data Service concepts can be applied to extract data with marketing value from a CMS database and publish it as web services. I used the drupal instance deployed at http://wso2.org as the CMS for the use case. And as the data service framework, I used WSF/PHP data services library, as it requires minimum changes to the existing infrastructure (the LAMP stack).
The case study also talks about how to consume the data service by any third party mashup to present textual/ graphical views of analyzed data. These mashups can be extended up to intergreate with social networks like facebook, twitter and etc to communicate back and forth a wider community and may be it can be used to track the distribution of active users using Google maps. Simply it makes easier to analyze business data + engagement with the community.
WSO2announced the release of the revolutionary series of products introducing a componentized design to implement SOA in cost effective and simple manner.
Data services support – Expose you enterprise data as a services in a jiffy
WSAS IDE – Eclipse IDE integration
Clustering support for High Availability & High Scalability
Full support for WS-Security, WS-Trust, WS-Policy and WS-Secure Conversation and XKMS
EJB service provider support – Expose your EJBs as services
Axis1 backward compatibility – Deploy Axis1 services on WSAS & Engage advanced WS-* protocols in front of legacy services
JMX & Web interface based monitoring and management
WS-* & REST support
GUI, command line & IDE based tools for Web service development
WSO2 Enterprise Service Bus (ESB)- WSO2 ESB is a lightweight and easy-to-use Open Source Enterprise Service Bus based on Apache Synapse. Here is the listing of some of key features,
Proxy services – facilitating transport, interface (WSDL/Schema/Policy), message format (SOAP 1.1/1.2, POX/REST, Text, Binary), QoS (WS-Addressing/WS-Security/WS-RM) and optimization switching (MTOM/SwA).
Non-blocking HTTP/S transports based on Apache HttpCore for ultrafast execution and support for thousands of connections at high concurreny with constant memory usage.
Built in Registry/Repository, facilitating dynamic updating and reloading of the configuration and associated resources (e.g. XSLTs, XSD, JS, ..)
Easily extended via custom Java class (mediator and command)/Spring mediators, or BSF Scripting languages (Javascript, Ruby, Groovy, etc.)
Built in support for scheduling tasks using the Quartz scheduler.
Load-balancing (with or without sticky sessions) /Fail-over, and clustered Throttling and Caching support
WS-Security, WS-Reliable Messaging, Caching and Throttling configurable via (message/operation/service level) WS-Policies
Lightweight, XML and Web services centric messaging model
Support for industrial standards (Hessian binary web service protocol/Financial information exchange protocol)
Enhanced support for the VFS/JMS/Mail transports
Support for message splitting and aggregation using the EIP
Database lookup and store support with DBMediators with reusable database connection pools
JMX monitoring support
WSO2 Registry – WSO2 Registry is a user-friendly, but comprehensive enterprise resource / metadata management solution. It is capable of
Storing and managing arbitrary resources and collections
Tagging, commenting and rating
Managing users and roles
Authentication and authorization on all resources and actions
Resource / collection versioning and rollback
Advanced search capabilities – tags, users, etc.
Built in media type support for common types (WSDL, XSD)
Dependency management – maintain relationships between dependent resources
Pluggable media type handlers for handling custom media types
Support for processing custom URL patterns via pluggable URL handlers
Support for custom query languages via pluggable query processors
Activity log and filtering support for the activity logs
Atom Publishing Protocol (APP) support for reading/writing the data store remotely
Subscribe to directories, comments, tags, etc. with any standard feed reader (Bloglines, Google Reader, etc)
Java client for remote access via APP
Embedded and WAR deployments
Web based user interface with Web 2.0 look and feel
WSO2 Business Process Server (BPS) – WSO2 Business Process Server (BPS) is an easy-to-use open source business process server that executes business processes written using the WS-BPEL standard and it’s powered by Apache ODE (Orchestration Director Engine). It provides you the following features,
Deploying Business Processes written in compliance with WS-BPEL 2.0 Standard and BPEL4WS 1.1 standard.
Managing BPEL packages, processes and process instances.
Data Sources support.
External Database support for BPEL engine.
WS-Security support for business processes.
WS-RM support for business processes.
Caching support for business processes.
Throttling support for business processes.
Transport management.
Internationalized web based management console.
System monitoring.
Try-it for business processes.
SOAP Message Tracing.
Web Services tooling support such as WSDL2Java, Java2WSDL and WSDL Converter.
Customizable server – You can customize the BPS to fit into your exact requirements, by removing certain features or by adding new optional features.
All these products are pre-bundled components built on top of WSO2 Carbon framework which is based on the OSGI technology. In fact you can bundle the components to suite your enterprise architecture as all the major features have been developed as pluggable Carbon components.
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