I'm trying to call a web service in tomcat through api resource in WSO2 ESB.
The resource is:
<resource methods="DELETE" url-mapping="/weight/delete">
<inSequence>
<log level="custom">
<property name="Access token value" expression="$trp:Authorization"/>
</log>
<oauthService remoteServiceUrl="https://host:port/services/" username="username" password="password"></oauthService>
<header name="Authorization" scope="transport" action="remove"></header>
<send>
<endpoint>
<address uri="http://host:8080/web-services/services/proyect1"></address>
</endpoint>
</send>
</inSequence>
It hasn't query params and path params.
But I have an 500 internal server error, and tomcat throw this exception:
Caused by: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input
The request is:
Method: Delete
http://host:8282/web-services/services/proyect1/weight/delete
Head: Authorization: Bearer 89712389712hd97861h
Payload: [{"id":"307"}]
All is correct sending request directly to tomcat.
According to REST, delete method in HTTP must not content payload. Then, http://host:8282/web-services/services/proyect1/weight/delete it's not correct.
But, to resolve this problem I can use a PayLoadFactory mediator in WSO2 to send JSON to endpoint.
Related
I need to add api service using wso2 api management or wso2 ei. i have a web api with ip:port format that have response via postman but when i add web api in api manager or wso2 ei in api menu and call published api via postman i get this error
method not allowed and in log i have this error : main sequence executed for call to non-existent = /CardTransfer/
my API Source :
<api xmlns="http://ws.apache.org/ns/synapse" name="NoorService" context="/CardTransfer" version="v1" version-type="url">
<resource methods="POST">
<inSequence>
<log level="full">
<property name="befor" value="befor"/>
</log>
<send>
<endpoint>
<http uri-template="http://x.x.x.x:9110/"/>
</endpoint>
</send>
<log level="full">
<property name="after" value="after"/>
</log>
</inSequence>
<outSequence>
<send/>
</outSequence>
</resource>
</api>
The request URL for the API resource you have created is:
https://<ip>:<port>/CardTransfer
the forward slash end of the API context should be omitted.
If the API resource contains a url-mapping="/", the request URL would be:
https://<ip>:<port>/CardTransfer/
We are running into an issue where a call to a WSO2 API REST endpoint fails with a "412 Precondition Failed" when the Content-Length exceeds 1068. Just adding a space to the request (increasing size to 1069) causes this failure. This issue can also happen when content length is less than 1069, if the API is called fast enough (using SOAPUI for testing). We have a theory that the header and body are split between packets and confuses the request. We tried turning off chunking and that didn't affect things. When the back end REST service is called directly it works fine.
You can turn off the chunking as below by using the property mediator if you are calling the SOAP endpoint. But you have to make sure that the SOAP endpoint is also expecting a non-chunked request.
<property name=”DISABLE_CHUNKING” value=”true” scope=”axis2″/>
But if you are using REST endpoint above property may not work sometimes. In that kind of situation, we need to make sure the Content-Length header is appended to the request. We can use below two properties to append the Content-Length header.
<property name="FORCE_HTTP_CONTENT_LENGTH" value="true" scope="axis2"></property>
<property name="COPY_CONTENT_LENGTH_FROM_INCOMING" value="true" scope="axis2"></property>
Sample proxy inSequence
<inSequence>
<log level="custom">
<property name="msg" value="Executing IN sequence"></property>
</log>
<property name="FORCE_HTTP_CONTENT_LENGTH" value="true" scope="axis2"></property>
<property name="COPY_CONTENT_LENGTH_FROM_INCOMING" value="true" scope="axis2"></property>
<send>
<endpoint>
<address uri="https://www.google.com" format="rest"></address>
</endpoint>
</send>
</inSequence>
I am using WSO2 API Manager 1.7.0 and am doing a simple payloadfactory attempting to convert a call from a GET to a POST passing in a json payload.
However when I look at the log files it appears that WSO2 is sending the json wrapped with {"jsonObject": [myjson] }
I am new to WSO2 and am not sure what cofiguration setting I need to use to stop this. I assume it is a config setting since in no examples or documentation that I have found does anyone else mention this.
My api looks like this:
"POST http://localhost:81/Service/ProcessRequest HTTP/1.1[\r][\n]"
"Authorization: Basic asdfadfadfadfadfadfadfa=[\r][\n]"
"Accept-Encoding: gzip,deflate[\r][\n]"
"Content-Type: application/json[\r][\n]"
"activityID: 2342342342342342342342342[\r][\n]"
"Transfer-Encoding: chunked[\r][\n]"
"Host: localhost:81[\r][\n]"
"Connection: Keep-Alive[\r][\n]"
"User-Agent: Synapse-PT-HttpComponents-NIO[\r][\n]"
"[\r][\n]"
I/O session http-outgoing-2-3 11.11.11.11:12345<->192.168.1.1:8080[ACTIVE][rw:w]: 0 bytes written
http-outgoing-2: Produce output
I/O session http-outgoing-2-3 11.11.11.11:12345<->192.168.1.1:8080[ACTIVE][rw:w]: 230 bytes written
"db[\r][\n]"
"{"jsonObject":{"UserType":"User"}}[\r][\n]"
"0[\r][\n]"
"[\r][\n]"
The log file part that seems to apply to the service call looks like this:
<api name="admin--JJJJJ" context="/jjjjj" version="v1.0" version-type="url">
<resource methods="GET" url-mapping="/documents">
<inSequence>
<payloadFactory media-type="json">
<format>{"UserType":"User"}</format>
<args/>
</payloadFactory>
<property name="Authorization" expression="fn:concat('Basic ', base64Encode('user:password'))" scope="transport"/>
<property name="HTTP_METHOD" value="POST" scope="axis2" type="STRING"/>
<property name="messageType" value="application/json" scope="axis2"/>
<property name="REST_URL_POSTFIX" scope="axis2" action="remove"/>
<log>
<property name="JSON-Payload" expression="json-eval($.)"/>
</log>
<send>
<endpoint name="admin--JJJJJ_APIproductionEndpoint_0">
<http trace="enable" method="post" uri-template="http://localhost:81/Service/ProcessRequest"></http>
</endpoint>
</send>
</inSequence>
<outSequence>
<send/>
</outSequence>
</resource>
<handlers>
...
</handlers>
</api>
I'm not sure where the db and 0 come from in the transmission but the error I get back from my service appears to be caused by the wrapping jsonObject.
Does anyone have any hints or ideas on how I can either prevent this wrapping or modify the payload just prior to sending it to remove it. Or I guess a better or even different way of transforming a GET request to a POST with a json payload.
Thank you for any hints on what I'm doing wrong.
change the messageformater in axi2.xml (/repository/conf/axis2/axis2.xml)file as
<messageFormatter contentType="application/json" class="org.apache.synapse.commons.json.JsonStreamFormatter"/>
and comment the default message formatter for json
<!--messageFormatter contentType="application/json" class="org.apache.axis2.json.JSONMessageFormatter"/-->
learn more on json support here[1]
https://docs.wso2.com/display/ESB480/JSON+Support
You can add an enrich mediator to api before send mediator to remove jsonObject wrapper from body like below.
<enrich>
<source clone="true" xpath="$body//jsonObject//UserType"/>
<target type="body"/>
</enrich>
You can add a log mediator after enrich mediator and check the changed body.
Hope this will help you.
I'm trying to call test Rest Api via Post request but ESB returns always empty response. For GET request response is sent correctly by ESB.
I have tried almost everything but still cannot make this work. My ultimate goal is to store message sent by client via Post request (large requests) and sent XML structured response to user that message is queued. Here's simple example what I have tried but for Post request empty response is sent by ESB.
<inSequence xmlns="http://ws.apache.org/ns/synapse">
<log>
<property name="text" value="IN Sequence"></property>
</log>
<header name="To" scope="default" action="remove"></header>
<property name="RESPONSE" value="true" scope="default" type="STRING"></property>
<payloadFactory media-type="xml">
<format>
<response xmlns="">Hello world</response>
</format>
</payloadFactory>
<send></send>
</inSequence>
Is this BUG In WSO2 ESB 4.0.8 or am I missing something ?
Thanks,
Kari
This is now resolved. Actually problem was that in Rest client I didn't specify Content-type. After adding Content-Type application/xml -header. The XML response worked fine for POST request. For GET Request this was working all the time.
how to use faultsequence of proxy in esb
i want to use faultsequence when occur a fault in EndPoint. for example i stop service1 using jconsole and want to route message to service2 when call proxy service. but when i call proxy using soapui it show fault this message : The system is attempting to access an inactive service..
<target>
<inSequence >
<send>
<endpoint name="cal" >
<address uri="http://localhost:9763/services/service1/"/>
</endpoint>
</send>
</inSequence>
<faultSequence>
<log level="custom">
<property name="text" value="An unexpected error occured for service"/>
<property name="message" expression="get-property('ERROR_MESSAGE')"/>
</log>
<send>
<endpoint>
<address uri="http://localhost:9763/services/service2/"/>
</endpoint>
</send>
</faultSequence>
please guide me!
When your endpoint 1 is inactive it returns a soap fault and you want it to go to the fault sequence. But at the moment that fault sequence is considered as a response and it is sent to the client (soap ui).
In WSO2 ESB 4.5.0 onwards, there is a new property FORCE_ERROR_ON_SOAP_FAULT added. By setting this property, soap faults will be directed to fault sequence. You can do your next logics when you are in the fault sequence (for example invoking another sequence).
Refer [1] for a sample proxy service.
[1] http://maharachchi.blogspot.com/2012/09/now-you-can-send-soapfaults-to-fault.html
I believe your exact scenario is apart of your main end point if it faild you need to route the message to secondary endpoint.
Correct approach to your implementation is not using the fault sequence right approach is using fail over endpoint. You can find reference document at [1][2].
For sample you can refer "Sample 53: Failover sending among 3 endpoints" [3].
[1].http://wso2.org/project/esb/java/3.0.1/docs/endpoint_guide.html#FoEp
[2].http://docs.wso2.org/wiki/display/ESB403/Failover+Endpoint
[3].http://wso2.org/project/esb/java/3.0.1/docs/samples/endpoint_mediation_samples.html
Thank You,
Dharshana.