Ive used sample 152 in the wso2 samples to proxy a remote REST service. I cant find any info on how to map the incoming soap request to the params of the uri so we can use the rest service.
Ie I would like the incoming soap request to be able to change the value of accessid=DEMO to accessid=FOO.
I can write a java client and expose it as a Axis2 proxy very easily, but thats not really using the wso2 esb..
Thanks for any pointers.
<definitions xmlns="http://ws.apache.org/ns/synapse">
<proxy name="QProxy" statistics="disable" trace="disable" transports="https">
<target>
<endpoint>
<address format="pox" statistics="disable"
trace="disable" uri="[SERVER]qml_rest.ReceiveMessage?accessid=DEMO">
<timeout>
<duration>0</duration>
<action>discard</action>
</timeout>
<markForSuspension>
<retriesBeforeSuspension>0</retriesBeforeSuspension>
<retryDelay>0</retryDelay>
</markForSuspension>
<suspendOnFailure>
<initialDuration>0</initialDuration>
<maximumDuration>0</maximumDuration>
<progressionFactor>1.0</progressionFactor>
</suspendOnFailure>
</address>
</endpoint>
<outSequence>
<send/>
</outSequence>
</target>
</proxy>
</definitions>
Related
I have created an api proxy to call my rest service, but when I send in a Mal formed XML request, I only receive an HTTP status code 202.
I have coded my service to handle this mal formed xml, and I just want the ESB to pass through the request.
Here is the code to my ESB API:
<?xml version="1.0" encoding="UTF-8"?>
<api xmlns="http://ws.apache.org/ns/synapse" name="myApi" context="/restService">
<resource methods="POST">
<inSequence>
<send>
<endpoint>
<address uri="http://myserver/MyRestService"/>
</endpoint>
</send>
</inSequence>
<outSequence>
<send/>
</outSequence>
<faultSequence/>
</resource>
</api>
Thanks
In this case, ESB should be able to successfully send the message to the backend. By enabling wire logs you can make sure message sending correctly to the backend.
If you are not expecting any response from your backend, Please set out_only property in your inseqeunce
How to invoke Soap proxy service from WSO2 ESB to BPEL workflow process. Any help can be really appreciated.
Please follow the steps below.
Deploy a BPEL process on WSO2 BPS Server. (Login to the BPS Management Console and go to Processes -> Add then select the BPEL Archive(zip) file and upload it. If your BPEL process has external web service invocations, you can be hosted those web services WSO2 App Server or axis2Server)
Create a proxy service with payload factory mediator as below. Here payload factory mediaor is used to transform the payload of incoming request to the appropriate format that allow by the request for the BPEL process invocation.
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="bpel_factory"
transports="https,http"
statistics="disable"
trace="disable"
startOnLoad="true">
<target>
<inSequence>
<payloadFactory media-type="xml">
<format>
<p:MultiOperatorServiceRequest xmlns:p="http://wso2.org/bps/operator"><!--Exactly 1 occurrence--><x xmlns="http://wso2.org/bps/operator">$1</x>
<!--Exactly 1 occurrence--><y xmlns="http://wso2.org/bps/operator">$2</y>
</p:MultiOperatorServiceRequest>
</format>
<args>
<arg xmlns:m="http://wso2.org/bps/operator"
evaluator="xml"
expression="//m:MultiOperatorServiceRequest/x"/>
<arg xmlns:m="http://wso2.org/bps/operator"
evaluator="xml"
expression="//m:MultiOperatorServiceRequest/y"/>
</args>
</payloadFactory>
<send>
<endpoint>
<address uri="http://10.100.7.75:9763/services/MultiOperatorService.MultiOperatorServicehttpMultiOperatorServiceBindingEndpoint/"/>
</endpoint>
</send>
</inSequence>
<outSequence>
<log level="full"/>
<respond/>
</outSequence>
</target>
<description/>
</proxy>
Next you can send a POST request with the payload to the proxy service through POSTMAN and test it.
For more information see http://wokis.blogspot.com/2016/05/invoke-bpel-workflow-from-wso2-esb.html
We are trying to implement basic SOAP-to-REST proxy service on WSO2 ESB. Our 3rd-party REST service accepts the requests in the following format:
http://<MYURL>/simpleQuery/16783484?oslc.select=value1
The problem is that operation name has numeric only format - "16783484" in our case. payloadFactory mediator does not allow having <16783484> as XML element, since XML spec restricts numeric-only element names.
<proxy xmlns="http://ws.apache.org/ns/synapse" name="CQProxy" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
<target>
<inSequence>
<payloadFactory>
<format>
<16783484>
<oslc.select>$1</oslc.select>
</16783484>
</format>
<args>
<arg value="myvalue1"/>
</args>
</payloadFactory>
<send>
<endpoint>
<address uri="http://<MYURL>/simpleQuery" format="get"/>
</endpoint>
</send>
<drop/>
</inSequence>
<outSequence>
<log level="full"/>
<send/>
</outSequence>
</target>
</proxy>
How can this be overcome?
Appreciate your help!
WSO2 support team suggested the following solution. Thank you Sandapa!
In that case, you have to set endpoint format as 'rest'. And if it's a GET request you have to set 'HTTP_METHOD' as as GET. Please refer the example given below.
Example:
<proxy xmlns="http://ws.apache.org/ns/synapse" name="CQProxy" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
<target>
<inSequence>
<property name="REST_URL_POSTFIX" value="/getSimpleQuote?symbol=IBM" scope="axis2" type="STRING"/>
<property name="HTTP_METHOD" value="GET" scope="axis2" type="STRING"/>
<send>
<endpoint>
<address uri="http://localhost:9000/services/SimpleStockQuoteService/" format="rest"/>
</endpoint>
</send>
<drop/>
</inSequence>
<outSequence>
<log level="full"/>
<send/>
</outSequence>
</target>
<description></description>
</proxy>
Although this comment is not going to suggest you a solution, I can say that this is a bad idea :-) You can try using XSLT instead of PayloadFactory to transform, but again that might choke up the XML parser. Problem is a lot of open source projects/libs that WSO2 products use and you might bump into elsewhere will honour the spec. In the long run, complying to the spec will give you less headaches when you integrate with other external tools/systems. Is it possible to change your rest service so that the service name at least have an underscore in front?
We want to proxy a RESTful web service with SOAP.
The REST service uses the GET method and accepts inputs via query parameters. It produces a resource of type application/csv.
Does WSO2 ESB/Synapse support such a scenario, and is there an example available?
Example Request
SOAP Proxy Request:
<request>
<fromDate>2012-01-01</fromDate>
<toDate>2012-12-31</toDate>
</request>
REST Endpoint Request:
http://localhost/person?fromDate=2012-01-01&toDate=2012-12-31
Example Response
REST Endpoint Response
"Name","Age","Sex"
"Geoff","22","Male"
SOAP Proxy Response
<person>
<name>Geoff</name>
<age>22</age>
<sex>Male</sex>
<person>
Many thanks.
If I understand you correctly, you want to expose a REST service as a SOAP service, so that SOAP clients can access your REST service through the ESB?
If that is the case, it is possible :) You should check out sample 152 from these: http://docs.wso2.org/wiki/display/ESB451/Proxy+Service+Samples
It'll explain how you take a SOAP request and pass it to a REST backend and then transform the REST response into a SOAP response.
EDIT: Here's a sample configuration on how to do what you asked in the comments, hopefully it will get you started :)
<proxy xmlns="http://ws.apache.org/ns/synapse" name="RESTProxy" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
<target>
<inSequence>
<!-- We set the HTTP Method we want to use to make the REST request here -->
<property name="HTTP_METHOD" value="GET" scope="axis2"/>
<!-- This is where the magic happens, for what you want i.e. mapping SOAP "params" to REST query param's -->
<property name="messageType" value="application/x-www-form-urlencoded" scope="axis2"/>
<send>
<endpoint>
<!-- This is the RESTful URL we are going to query, like the one in the ESB example 152 -->
<address uri="http://localhost/person" />
</endpoint>
</send>
</inSequence>
<outSequence>
<log level="full"/>
<property name="messageType" value="text/xml" scope="axis2"/>
<send/>
</outSequence>
</target>
<description></description>
</proxy>
Then the SOAP request you make to the ESB should be something like:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header/>
<soapenv:Body>
<person>
<fromDate>2012-01-01</fromDate>
<toDate>2012-12-31</toDate>
</person>
</soapenv:Body>
</soapenv:Envelope>
Hope that helps :)
Hope This will be very helpful you to understand of SOAP Client and REST Service communication
http://docs.wso2.org/display/ESB460/Using+REST+with+a+Proxy+Service#UsingRESTwithaProxyService-SOAPClientandRESTService
You can use class mediator to extract the SOAP parameters using XPATH. Than build the REST URL and send it back to IN sequence flow.
1. you need to get the value from SOAP PROXY
2. you need to store it in a local variable
3. you need to pass the value to the REST SERVICE using Query Parameters
4. you need to format the response from REST Service to an SOAP Format
The SOAP Request will be,
<request>
<fromDate>2012-01-01</fromDate>
<toDate>2012-12-31</toDate>
</request>
You can store the value from SOAP PROXY Request as,
<proxy xmlns="http://ws.apache.org/ns/synapse" name="RESTProxy" transports="https,http" statistics="disable" trace="disable" startOnLoad="true><target>
<inSequence>
<property name="fromDate" expression="//fromDate" scope="default" type="STRING"/>
<property name="toDate" expression="//toDate" scope="default" type="STRING"/>
Then you can pass the values to the REST Service by,
<send>
<endpoint>
<http method="GET" uri-template="http://localhost/person?fromDate=={get-property('fromDate')}&toDate={get-property('toDate')}"/>
</endpoint>
</send>
</inSequence>
Then You can Format the Response using PayloadFactory mediator,
<outSequence>
<payloadFactory media-type="xml">
<format>
<person>
<Name>$1</Name>
<Age>$2</Age>
<Sex>$3</Sex>
</person>
</format>
<args>
<arg evaluator="json" expression="$.Name"/>
<arg evaluator="json" expression="$.Age"/>
<arg evaluator="json" expression="$.Sex"/>
</args>
</payloadFactory>
<send/>
</outSequence>
</target>
<description/>
</proxy>
So the Response of Proxy will be,
<person>
<name>Geoff</name>
<age>22</age>
<sex>Male</sex>
<person>
I am struggling to make work my message flow in the wso2 esb so I would need some help to implement a basic communication:
Service1 wants to receive an integer number
Service2 Generates random numbers
Service1 has InSequence: log, send (to addresspoint specified). OutSequence: log, send
this looks like:
<proxy name="ClientAskNumber" transports="https http" startOnLoad="true"
trace="disable">
<target faultSequence="fault">
<inSequence>
<log level="full">
<property name="Insequence" value="***" />
</log>
<send>
<endpoint>
<address uri="http://localhost:8280/services/RandomNumbers" />
</endpoint>
</send>
</inSequence>
<outSequence>
<log level="full">
<property name="Outsequence" value="***" />
</log>
<send />
</outSequence>
</target>
</proxy>
I have this response: <faultstring>System.Web.Services.Protocols.SoapException: Server did not recognize the value of HTTP Header SOAPAction: urn:mediate. at System.Web.Services.Protocols.Soap11ServerProtocolHelper.RouteRequest()....etc
What it means? Am I missing something else? Please help. Thank you
EDIT:
I am studying the Wso2 ESB and I just need to understand how to make work a message communication, after it I will try to add different kind of mediation. I am just breaking down the problem, because I am new to this technology and as you can see I am really struggling to make it work...
EDIT2:*
<proxy xmlns="http://ws.apache.org/ns/synapse" name="ClientAskNumber" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
<target endpoint="RandomNumbers">
<inSequence>
<log>
<property name="CLIENTASKS" value="******C_ASKS" />
</log>
<send>
<endpoint key="RandomNumbers" />
</send>
</inSequence>
<outSequence>
<log>
<property name="CLIENTRECEIVES" value="*******C_RECEIVES" />
</log>
</outSequence>
</target>
</proxy>
In the case this helps someone else: the problem with "Server did not recognize the value of HTTP Header SOAPAction: urn:mediate..." is that I needed to add an Header mediator in order to call my webservice method "getNumbers", into my InSequence as follows:
<inSequence>
<log>
<property name="CLIENTASKS" value="******C_ASKS" />
</log>
<header name="Action" value="http://tempuri.org/getNumbers" />
<send>
<endpoint key="RandomNumbers" />
</send>
</inSequence>
and send this request via soapUI:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<Numbers xmlns="http://tempuri.org/" />
</soap:Body>
</soap:Envelope>
I hope this can be useful to other persons who are using .Net Solutions with WSO2ESB (unfortunately there are not many examples out there...)
P.S. thanks to Ratha for his help
This is the flow i can tell you..
You have to point your 2nd service as the endpoint of your fist service..In the above configuration
http://localhost:8280/services/RandomNumbers --->2nd service url
ClientAskNumber -->1st service..
Now you can send the request which is needed to execute the 2nd service(ie:to retrive the random number)
So the proxy will forwrad to that endpoint and return the response to the outsequence..You should see that in the console/log since you used a log mediator.
In the error response you are getting i hope you are getting that from your second service. Check whether you are sending correct request to your endpoint