Re: Activation related stack traces after upgrading to 4.2.15

[Łukasz Dywicki]

Hey Greg,
Looking at the stack trace it originates from an system dependency we 
have and not Karaf itself. Are you able to reproduce issue without Karaf 
(ie. running stock CXF), or it happens only when you deploy your service 
within our runtime?

BTW would your organization be interested in providing a story for 
https://karaf.apache.org/stories.html ?

Best,
Łukasz
--
Apache Karaf committer & PMC member
http://code-house.org

On 2.02.2022 17:15, Greg Logan wrote:
Hi all,

We are seeing null pointer exceptions[1] on requests after upgrading 
from 4.2.9 to 4.2.15.  The requests look like this (these are testing 
instances, passwords are public, feel free to copy and paste these 
commands):

curl -vvv 'https://stable.opencast.org/api/series/ 
<https://stable.opencast.org/api/series/>' \
   -u admin:opencast \
   -F 'metadata=[{"label":"Opencast Series 
Dublincore","flavor":"dublincore\/series","fields":[{"id":"title","value":"Test"}]}]' 
\
   -F 
'acl=[{"allow":true,"action":"write","role":"ROLE_ADMIN"},{"allow":true,"action":"read","role":"ROLE_ADMIN"}]'

A corrected request adds mimetypes to the acl and metadata fields:

curl -vvv 'https://stable.opencast.org/api/series/ 
<https://stable.opencast.org/api/series/>' \
   -u admin:opencast \
   -F 'metadata=[{"label":"Opencast Series 
Dublincore","flavor":"dublincore\/series","fields":[{"id":"title","value":"Test"}]}]; 
type=application/json' \
   -F 
'acl=[{"allow":true,"action":"write","role":"ROLE_ADMIN"},{"allow":true,"action":"read","role":"ROLE_ADMIN"}]; 
type=application/json'

Looking through the Karaf jira, 
https://issues.apache.org/jira/browse/KARAF-6703 
<https://issues.apache.org/jira/browse/KARAF-6703> caught one of our 
developer's eye, notably the comment with the same stack trace linking 
to https://issues.apache.org/jira/browse/CXF-8380 
<https://issues.apache.org/jira/browse/CXF-8380>.  Looking at the jars 
in our assemblies, it looks like we have CXF 3.4.3, but this behaviour 
is supposed to be resolved by 3.4.2.  Am I confused and this is still a 
known issue, or am I just unfamiliar with the inner workings of Karaf 
and CXF?

Thanks,
G

1: <h3>Caused by:</h3><pre>java.lang.NullPointerException: mimeType
         at 
java.datatransfer/java.awt.datatransfer.DataFlavor.&lt;init&gt;(DataFlavor.java:427)
         at 
javax.activation.ActivationDataFlavor.&lt;init&gt;(ActivationDataFlavor.java:113)
         at javax.activation.DataHandler.&lt;init&gt;(DataHandler.java:41)
         at 
org.apache.cxf.attachment.AttachmentUtil.createAttachment(AttachmentUtil.java:420)
         at 
org.apache.cxf.jaxrs.ext.MessageContextImpl.createAttachments(MessageContextImpl.java:291)
         at 
org.apache.cxf.jaxrs.ext.MessageContextImpl.get(MessageContextImpl.java:79)
         at 
org.apache.cxf.jaxrs.utils.multipart.AttachmentUtils.getMultipartBody(AttachmentUtils.java:84)
         at 
org.apache.cxf.jaxrs.utils.JAXRSUtils.processFormParam(JAXRSUtils.java:1044)
         at 
org.apache.cxf.jaxrs.utils.JAXRSUtils.createHttpParameterValue(JAXRSUtils.java:967)
         at 
org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(JAXRSUtils.java:927)
         at 
org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters(JAXRSUtils.java:842)
...