soa with c, c++, php and more

SOA with C, C++, PHP …Samisa AbeysingheDirector, EngineeringWSO2, Inc

SOA is about

Architectural Design

And

We need implementation techniques & tools to build it

Language of your Choice

You should have freedom to chooseYou might also have reasons to choose

Why C?

Because it is the most portable

And bunch of other reasonslike

Many interesting applications written in Chttpd, PHP, Ruby, MySQL

Why C++?

Widely used (and some legacy)Financial, Banking, Telco, DBMS, Embedded

And like C it offers:Performance, Flexibility, Control

Why PHP?

Installed on over 20 million websites and

1 million web servers

http://www.php.net/usage.php

Chances

Your other application (legacy or green-field) can be C, C++, PHP or the like

Can we get them on the SOA?

SOA in a Heterogeneous World

Expectations

Tooling for WSDL Security

Interoperability

Binary AttachmentsReliability

Interoperability - PHP

PHP Web Services Frameworks

Package Written in WSDL Security Attachments Reliability

PHP5 SOAP Ext C Partial No No No

PHP Yes No No No

SCA with PHP(IBM) PHP Yes No No No

WSO2 WSF/PHP C Yes Yes Yes Yes

NuSOAP

Framework that improves PHP user’s ability to provide and consume Web services

Capable of dealing with secure and relabel messaging even with binary data, the only PHP software package to

offer those features

The framework is inter-operable with non-PHP imple-mentations, allowing it to be integrated with enterprise

applications seamlessly

PHP Example – Secure Service

1. function echoFunction($inMessage) {2. $returnMessage = new WSMessage($inMessage->str);3. return $returnMessage;4. }5.6. $pub_key = ws_get_cert_from_file("../keys/alice_cert.cert");7. $pvt_key = ws_get_key_from_file("../keys/bob_key.pem");8.9. $operations = array("echoString" => "echoFunction");10.11. $sec_array = array("encrypt" => TRUE, "algorithmSuite" => "Basic256Rsa15",12. "securityTokenReference" => "IssuerSerial");13.14. $actions = array("http://php.axis2.org/samples/echoString" => "echoString");15.16. $policy = new WSPolicy(array("security"=>$sec_array));17. $sec_token = new WSSecurityToken(array("privateKey" => $pvt_key, 18. "receiverCertificate" =>$pub_key));19.20. $service = new WSService(array("actions" => $actions, 21. "operations" => $operations, 22. "policy" => $policy, "securityToken" => $sec_token)); 23.24. $service->reply();

PHP Example – Secure Client

1.$rec_cert = ws_get_cert_from_file("../keys/bob_cert.cert");2.$pvt_key = ws_get_key_from_file("../keys/alice_key.pem");3.4.$reqMessage = new WSMessage($reqPayloadString, array("to"=>5. "http://localhost/samples/security/encryption/encrypt_service.php",6. "action" => "http://php.axis2.org/samples/echoString"));7.8.$sec_array = array("encrypt"=>TRUE, "algorithmSuite" => "Basic256Rsa15",9. "securityTokenReference" => "IssuerSerial");10.11.$policy = new WSPolicy(array("security"=>$sec_array));12.$sec_token = new WSSecurityToken(array("privateKey" => $pvt_key, 13. "receiverCertificate" => $rec_cert));14.15.$client = new WSClient(array("useWSA" => TRUE, "policy" => $policy, 16. "securityToken" => $sec_token));17.18.$resMessage = $client->request($reqMessage);19.20.printf("Response = %s \n", $resMessage->str);

How to adapt a C++ Application as Web Services

C/C++ Web Services Frame-works

Package WSDL Security Attachments Reliability

Partial No Partial No

Yes Partial Yes No

WSO2 WSF/C Partial Yes Yes Yes

WSO2 WSF/C++ Partial Yes Yes Yes

HydraExpress

gSOAP

Designed for embedding within C or C++ soft-ware stacks to enable Web services

All-in-one solution for the building and deploy-ing of Web services

Widest range of WS-* specifications imple-mentations

WS-Addressing, WS-Policy, WS-Security, WS-SecurityPolicy, WS-Reliable Messaging, MTOM

and WS-eventing

C++ Example - Service1.#include <ServiceSkeleton.h>2.3.using namespace wso2wsf;4.5.class Echo: public ServiceSkeleton 6.{7. public:8. WSF_EXTERN WSF_CALL Echo(){};9.10. OMElement* WSF_CALL invoke(OMElement *message, MessageContext *msgCtx);11.12. OMElement* WSF_CALL onFault(OMElement *message);13.14. void WSF_CALL init(){};15.};1.OMElement* Echo::invoke(OMElement *element, MessageContext *msgCtx)2.{3. OMElement *echoElement = new OMElement(element->getLocalname(), 4. new OMNamespace(element->getNamespace(false)->getURI(),5. element->getNamespace(false)->getPrefix()));6. OMElement *textElement = new OMElement("messsage");7. echoElement->addChild(textElement);8. textElement->setText("Hello World");9. return echoElement;10.}

C++ Example - Client1.ServiceClient serviceClient(client_repo, end_point);2.3.OMNamespace * ns = new OMNamespace("http://ws.apache.org/rampart/c/samples", "ns1");4.OMElement * payload = new OMElement(NULL, "echoIn", ns);5.OMElement * child = new OMElement(payload, "message", NULL);6.child->setText("Hello Service!");7.8.try9.{10. OMElement* response = serviceClient.request(payload, 11. "http://example.com/ws/2004/09/policy/Test/EchoRequest");12. if (response)13. {14. cout << endl << "Response: " << response << endl;15. }16.}17.catch (AxisFault & e)18.{19. if (serviceClient.getLastSOAPFault())20. {21. cout << endl << "Fault: " << serviceClient.getLastSOAPFault() << endl;22. }23. else24. {25. cout << endl << "Error: " << e << endl;26. }27.}28.delete payload;

Web Services are Fast

Web Services are Faster

Web Services are Still Faster

For secure services

10K messages C implementation x10 – x15 times faster than Java

100k messages C implementation x6 – x8 times faster than Java

WSF/C++ Features SOAP 1.1 and SOAP 1.2 WS-Addressing

1.0 submission

MTOM and SwA Support for caching large attachments

WS-Security Base security standards mean that messages can be protected

using Encryption, Authentication and Signature Including WS-SecureConversation and WS-Trust

WSDL2CPP Code Generation tool Supports generating client stubs, service skeletons, build

scripts and deployment scripts

WSF/C++ Features WS-Policy and WS-Security Policy

Enables using industry standard XML to configure security

SSL Enabled Transport Layer WS-Reliable Messaging 1.0, 1.1 and WS-RMPolicy

Enables reliability between platforms including message resending, duplicate detec-tion and persistence

Full REST support (GET, PUT, DELETE, POST) with custom URI Mapping

Enables mapping a REST API easily and naturally

Useful tools Tcpmon wsclient

ReferencesVarious Web Services Frameworks

http://wso2.org/projects/wsfSharePoint Web Services

http://msdn.microsoft.com/en-us/library/bb862916.aspxApache Axis2/C Web Services Performance

http://wso2.org/library/3532Example applications for SOA

http://incubator.apache.org/stonehenge/ PHP Web Services Blog

http://phpwebservices.blogspot.com/

Q & A