REST: POST /deployment/create - NullPointer 7.2-alpha5

Gareth

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Nov 13, 2014, 3:25:05 AM11/13/14

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Hi

I am deploying the following into Camunda 7.2-Alpha5 via the rest call /deployment/create but get a null pointer exception will calling isBpmnResource.

If looks like resourceName isn't being set for some reason. ( same code in Alpha 9 ). Is there something wrong with my payload or is this a bug ? ( It looks like its trying to validate the resource name ends with bpmn20.xml or bpmn - but as this is a REST call I cant see where this is set - it feels like a hangover from file deploys? )

protected boolean isBpmnResource(String resourceName) {
for (String suffix : BPMN_RESOURCE_SUFFIXES) {
if (resourceName.endsWith(suffix)) {
return true;
}
}
return false;
}

Is there a guide to setup remote debuging for Camunda ?

Thanks

Gareth

Log:
13 Nov 2014 08:07:47,248 - main - DEBUG - org.springframework.http.client.support.HttpAccessor.createRequest(HttpAccessor.java:78) - Created POST request for "http://localhost:8081/engine-rest/deployment/create"
13 Nov 2014 08:07:47,251 - main - DEBUG - org.springframework.web.client.RestTemplate$AcceptHeaderRequestCallback.doWithRequest(RestTemplate.java:579) - Setting request Accept header to [text/plain, application/json, application/*+json, */*]
13 Nov 2014 08:07:47,251 - main - DEBUG - org.springframework.web.client.RestTemplate$HttpEntityRequestCallback.doWithRequest(RestTemplate.java:653) - Writing [{deployment-name=[UnitTestProcess], enable-duplicate-filtering=[true], deploy-changed-only=[true], *=[<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:camunda="http://activiti.org/bpmn" id="federos-definition" targetNamespace="http://activiti.org/bpmn">
<process id="federos-0A02003677BB227AF1DBD1B533C849CA" isExecutable="true" name="PT1">
<laneSet id="laneSet_4bd7ccdd-98f8-4f90-889b-f9407a808d5b">
<lane id="lane_a93ac62b-4437-45a3-9fc9-dff01766e4b5" name="admin">
<flowNodeRef>GUID-0A02004943714A3EFC0D3E1E49D84F27</flowNodeRef>
<flowNodeRef>GUID-0A02004943714A3E7EA6C5F117D14F7A</flowNodeRef>
<flowNodeRef>GUID-0A02004943714A3E96AEC9D00D534F06</flowNodeRef>
</lane>
</laneSet>
<endEvent id="GUID-0A02004943714A3EFC0D3E1E49D84F27" name="Silent end">
<incoming>GUID-7F0000013D0B754553B2316E7BD14DCD</incoming>
</endEvent>
<task id="GUID-0A02004943714A3E7EA6C5F117D14F7A" name="Demo Abstract task">
<incoming>GUID-0A02004943714A3EFA24B46354624470</incoming>
<outgoing>GUID-7F0000013D0B754553B2316E7BD14DCD</outgoing>
</task>
<startEvent camunda:async="true" id="GUID-0A02004943714A3E96AEC9D00D534F06" name="Manual start">
<outgoing>GUID-0A02004943714A3EFA24B46354624470</outgoing>
</startEvent>
<sequenceFlow id="GUID-0A02004943714A3EFA24B46354624470" sourceRef="GUID-0A02004943714A3E96AEC9D00D534F06" targetRef="GUID-0A02004943714A3E7EA6C5F117D14F7A"/>
<sequenceFlow id="GUID-7F0000013D0B754553B2316E7BD14DCD" sourceRef="GUID-0A02004943714A3E7EA6C5F117D14F7A" targetRef="GUID-0A02004943714A3EFC0D3E1E49D84F27"/>
</process>
<collaboration id="collaboration_2131955d-e2ff-41e9-92cf-9a765cf771a7">
<participant id="participant_93dfc05f-cbc7-4f41-8e9b-8f68c8375662" name="admin" processRef="federos-0A02003677BB227AF1DBD1B533C849CA"/>
</collaboration>
</definitions>]}] as "multipart/form-data" using [org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter@6d3b4609]
13 Nov 2014 08:07:47,269 - main - WARN - org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:529) - POST request for "http://localhost:8081/engine-rest/deployment/create" resulted in 500 (Internal Server Error); invoking error handler
13 Nov 2014 08:07:47,270 - main - ERROR - com.tdbfusion.bpm.services.CamundaEngineService.loadProcessDefinitionFromByteArray(CamundaEngineService.java:368) - Error unable to start Process. <html><head><title>Apache Tomcat/7.0.50 - Error report</title><style></style> </head><body><h1>HTTP Status 500 - java.lang.NullPointerException</h1><HR size="1" noshade="noshade">type Exception reportmessage java.lang.NullPointerExceptiondescription The server encountered an internal error that prevented it from fulfilling this request.exception <pre>org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:365)
org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:233)
org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:209)
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:557)
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:524)
org.jboss.resteasy.core.SynchronousDispatcher.invokePropagateNotFound(SynchronousDispatcher.java:169)
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:212)
org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.doFilter(FilterDispatcher.java:59)
org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:47)
</pre>root cause <pre>java.lang.NullPointerException
org.camunda.bpm.engine.impl.bpmn.deployer.BpmnDeployer.isBpmnResource(BpmnDeployer.java:468)
org.camunda.bpm.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:90)
org.camunda.bpm.engine.impl.persistence.deploy.DeploymentCache.deploy(DeploymentCache.java:58)
org.camunda.bpm.engine.impl.persistence.entity.DeploymentManager.insertDeployment(DeploymentManager.java:44)
org.camunda.bpm.engine.impl.cmd.DeployCmd.deploy(DeployCmd.java:166)
org.camunda.bpm.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:84)
org.camunda.bpm.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:61)
org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:97)
org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:32)
org.camunda.bpm.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:82)
org.camunda.bpm.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:125)
org.camunda.bpm.engine.rest.impl.DeploymentRestServiceImpl.createDeployment(DeploymentRestServiceImpl.java:126)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:167)
org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:257)
org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:222)
org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:211)
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:542)
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:524)
org.jboss.resteasy.core.SynchronousDispatcher.invokePropagateNotFound(SynchronousDispatcher.java:169)
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:212)
org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.doFilter(FilterDispatcher.java:59)
org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:47)
</pre>note The full stack trace of the root cause is available in the Apache Tomcat/7.0.50 logs.<HR size="1" noshade="noshade"><h3>Apache Tomcat/7.0.50</h3></body></html>
org.springframework.web.client.HttpServerErrorException: 500 Internal Server Error
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Sebastian Menski

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Nov 13, 2014, 3:32:36 AM11/13/14

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Hi Gareth,

could you show us your your POST request? As shown in the example of the rest docs [1] the part with the bpmn

should have a filename set which is then used as resource name. So we can distinguish between

bpmn, cmmn and other files.

Cheers,

Sebastian

[1] http://docs.camunda.org/latest/api-references/rest/#deployment-post-deployment-example

gar...@tdbfusion.com

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Nov 13, 2014, 3:58:09 AM11/13/14

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Hi Sebastian

Thanks for your response ( again :) ).

The body is included in the log ( its in a slightly different format, i'm trying to work out how to get it dumped in the same format as shown in the manual. ) However it is passing Camunda validation. Is there an integration test suite for the REST functionality I could look at ? Or a payload that you know works ?

Ill work on trying to capture the raw request ( even if its with fiddler - http://www.telerik.com/fiddler )

Kind Regards

Gareth

gar...@tdbfusion.com

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Nov 13, 2014, 4:01:53 AM11/13/14

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As requested ( Raw request )

--38gBZ7QRQdTjv3aRqUiajRpCmsxkw-y_VY8
Content-Disposition: form-data; name="deployment-name"
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 15

UnitTestProcess
--38gBZ7QRQdTjv3aRqUiajRpCmsxkw-y_VY8
Content-Disposition: form-data; name="enable-duplicate-filtering"
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 4

true
--38gBZ7QRQdTjv3aRqUiajRpCmsxkw-y_VY8
Content-Disposition: form-data; name="deploy-changed-only"
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 4

true
--38gBZ7QRQdTjv3aRqUiajRpCmsxkw-y_VY8
Content-Disposition: form-data; name="*"
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 1836

--38gBZ7QRQdTjv3aRqUiajRpCmsxkw-y_VY8--

gar...@tdbfusion.com

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Nov 13, 2014, 4:08:41 AM11/13/14

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It looks like the payload is incorrect :(

Manual:
--28319d96a8c54b529aa9159ad75edef9
Content-Disposition: form-data; name="data"; filename="test.bpmn"

<?xml version="1.0" encoding="UTF-8"?>

Mine:

--38gBZ7QRQdTjv3aRqUiajRpCmsxkw-y_VY8
Content-Disposition: form-data; name="*"
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 1836

<?xml version="1.0" encoding="UTF-8"?>

I'm missing the filename attribute and took the '*' in the manual literally. Now to work out how to set the filename attribute ....

MultiValueMap<String, Object> formData = new LinkedMultiValueMap<String, Object>();
formData.add( "deployment-name", processId );
formData.add( "enable-duplicate-filtering", "true" );
formData.add( "deploy-changed-only", "true" );
formData.add( "*", new String( bpmn2ByteArray ) );

Sebastian Menski

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Nov 13, 2014, 4:28:25 AM11/13/14

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Hi Gareth,

what do you use to post the request? Apache HTTP Client?

Cheers,

Sebastian

gar...@tdbfusion.com

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Nov 13, 2014, 4:56:27 AM11/13/14

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Im using Springs RestTemplate ( its awesome - not serialisation / deserialisation of json - just strongly typed objects ).

I've figure out how to add the additional parameter and it now says its successful, however its not showing in the Tasklist :(

<200 OK,{"links":[{"method":"GET","href":"http://localhost:8081/engine-rest/deployment/d2cf4177-6b19-11e4-b5f8-92f79dfe1272","rel":"self"}],"id":"d2cf4177-6b19-11e4-b5f8-92f79dfe1272","name":"UnitTestProcess","deploymentTime":"2014-11-13T09:45:38"},{Server=[Apache-Coyote/1.1], Content-Type=[application/json], Transfer-Encoding=[chunked], Date=[Thu, 13 Nov 2014 09:47:23 GMT]}>

gar...@tdbfusion.com

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Nov 13, 2014, 5:37:15 AM11/13/14

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It's working now. You have to set the filename parameter to end "bpmn20.xml" or "bpmn"

Sebastian Menski

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Nov 13, 2014, 7:23:21 AM11/13/14

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Hi Garteh,

nice to hear that it works now. We use the file extension to determine the file type. So if you add bpmn or bpmn20.xml as file extension

the engine will know it is BPMN. Otherwise the engine thinks it is another deployment resource which is saved but not processed.