Web Services without JEE

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Mark Snow
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1 Web Services without JEE (WSAS, Open Source Web Services Framework) Sanjaya Karunasena Director of Services, WSO2

2 About me Have been in the industry for more than 10 years Have architected many enterprise applications At WSO2 while contributing to a variety of projects, responsible for successful execution of all client services Previously, has lead a 300+ engineering team, providing strategic direction to improve software engineering productivity and software quality Visiting University of Moratuwa, Sri Lanka Interested in: Distributed Computing, Software Architecture, and Service Oriented Architecture 2

3 Outline Service Oriented Architecture Web Services QoS in Enterprise Applications Traditional Web Services Containers Thinking Out of the Box POJO Web Services Container 3

4 Service Oriented Architecture SOA is an architecture style Handles challenges of distributed computing Enables dynamic service discovery Enables loose coupling Enables integration and inter-operation between different businesses Promotes open standards 4

5 Web Services SOA is not Web Services Web Service is not SOA Web Services can be used to implement a SOA based solution XML based wire protocol enables interoperability Set of widely accepted open standards 5

6 Web Services: Service Discovery Service Broker WSDL WSDL Service Requester SOAP/POX Service Provider 6

7 Web Services: Open Standards HTTP XML SOAP WS-Addressing Communication (Transport) WSDL WS-Policy WS-Metadata Exchange Service Description WS-Security WS-Secure Conversation WS-Trust WS-Reliable Messaging WS-Atomic Transactions QoS 7

8 QoS in Enterprise Applications Availability Accessibility Aesthetics Consistency Accuracy Recoverability Recovery time Response time Shutdown time Startup time Throughput Adaptability Auditability Compatibility Configurability Installability Localizability Maintainability Reusability/Composability Scalability Testability 8

9 Availability Accessibility Aesthetics Response time Shutdown Throttling time Startup time QoS in Enterprise Applications Usability Reliability Throughput Security Adaptability Performance Auditability Consistency Compatibility Accuracy Concurrency Configurability (Transaction Handling) Scalability Recoverability Installability Recovery Fault Tolerance time Localizability Configuration Management Maintainability Clustering Load Balancing Reusability/Composability Scalability Monitoring Testability 9

10 Traditional Web Services Containers JEE Application Servers provides these QoS Add a layer to process Web Service requests while benefiting from containers QoS capabilities Web Services are implemented as EJBs Note: EJB 3.0 has improved things pertaining to the EJB container ESBs are implemented using JMS Web Services protocols are abstracted using some sort of an adapter pattern 10

11 Traditional Web Services Containers 75% of the use cases only use 25% of the functionality Large scope to be catered hinders the flexibility to improve Design is far from actual implementation Difficult to resolve integration and interoperability issues Large footprint 11

12 Thinking Out of the Box A POJO Container Web Services are the primary citizens Directly handles the wire level protocols Use real Web Services standards to provide QoS Agile, flexible, modular design Small footprint True Web Services Application Server 12

13 POJO Web Services Container WSAS Completely Open Source License under Apache License 2.0 Powered by Apache Axis2 Web Services Engine Comprehensive WS-* support Supports POJOs, EJBs (via Proxy Services), and Scripts as services Good QoS Coverage and improving Current Version Eclipse IDE integration and tooling support 13

14 WSAS: High Level Architecture 14

15 WSAS: Standards Support SOAP 1.1/1.2 WSDL 1.1, WSDL 2.0 MTOM, XOP & SwA WS-Addressing WS-Security WS-Trust WS-SecureConverstation WS-SecurityPolicy WS-ReliableMessaging WS-Policy WS-PolicyAttachment WS-MetadataExchange 15

16 WSAS: Transports HTTP/S (including NIO) Mail (SMTP, POP3, IMAP) TCP XMPP JMS File (s/ftp, file, zip/tar/gz,...) 16

17 WSAS: Messaging SOAP Inbuilt support for REST and POX Note: HTTP Binding generation for WSDL 1.1 and WSDL 2.0 REST Support Include POST GET PUT DELETE JSON serialization XML binary serialization (Fast Infoset) 17

18 WSAS: Tooling Plugin for Eclipse 18

19 WSAS: Tooling Java2WSDL, Java2WSDL2 WSDL2Code tool (WSDL2Java, WSLD2PHP ect..) 19

20 WSAS: QoS Security Security Token Service (STS) WS-Security WS-SecureConversation 20

21 WSAS: QoS Reliability:Reliable Messaging WS-RelaibleMessaging WSO2 Mercury 21

22 WSAS: QoS Reliability:Fault Tolerance => Throttling 22

23 WSAS: QoS Reliability:Fault Tolerance => Clustering (HA) 23

24 WSAS: QoS Performance:Scalability => Clustering (HS) 24

25 WSAS: QoS Monitoring 25

26 WSAS: QoS Monitoring 26

27 WSAS: QoS Monitoring 27

28 WSAS: QoS Configuration Management 28

29 WSAS: QoS Configuration Management 29

30 WSAS: QoS Configuration Management 30

31 WSAS: QoS Configuration Management 31

32 Summary SOA is a good architectural style for enterprise application development SOA can be implemented using Web Services Tradition JEE based Web Services containers has many problems WO2 Web Services Application Server (WSAS) has taken a new approach WSAS provides most of the QoS attributes required by the enterprise applications WSAS is truly a Web Services Application Server 32

33 References Web Services Platform Architecture, Weerawarana, Cubera, Leymann, Ferguson, ISBN Apache Axis2/Java Documentation, WSAS Documentation, WSAS HOWTO Series, 33

34 Thank You! Questions? 34

Composable Web Services Using Interoperable Technologies From Sun s Project Tango

Composable Web Services Using Interoperable Technologies From Sun s Project Tango Nicholas Kassem Technology Director Harold Carr Lead Architect TS-4661 Copyright 2006, Sun Microsystems, Inc., All rights