no default value causes remote jobs to fail

[jmatzdorff-cpi]

not sure how out-of-the-box this is, but i am using this to have an "optional" file to pass in (a user can pass in a file, or all the parameters can be filled out when the job is executed). i use this mainly for an remote jenkins server to call this job (in this way, the calling jenkins server does not pass in a base64file)

in essence, in my job, the base64file is optional to pass in. and this works fine when calling it locally from the GUI (I don't have to choose a file). however, when the job is called via the remote jenkins server (remoteTrigger) it seems that the job is (in essence) requiring the file, as the jenkins server logs show:

2021-02-15 08:02:22.540+0000 [id=1546]	WARNING	h.i.i.InstallUncaughtExceptionHandler#handleException: Caught unhandled exception with ID 9a702ccb-ee2e-4156-8cc6-a60f0a393d72
org.apache.commons.fileupload.FileUploadBase$InvalidContentTypeException: the request doesn't contain a multipart/form-data or multipart/mixed stream, content type header is application/x-www-form-urlencoded

this same job works fine being called from the remoteTrigger if the base64file parameter isn't part of the config.

i am unsure if this is a jenkins issue or this plugin issue, but figured i would start here since the job will in fact launch fine w/o this file-parameter.

[jglick]

Not sure what remoteTrigger is.

[jmatzdorff-cpi]

it's a pipeline command that allows you to trigger a remote jenkins job (a different jenkins server).

https://plugins.jenkins.io/Parameterized-Remote-Trigger/

[jglick]

Never used that plugin. Also the issue description does not include a stack trace, or any indication of exactly how the upstream and downstream jobs are configured (such as Pipeline script text). Please provide complete, minimal steps to reproduce from scratch.

[jglick]

org.apache.commons.fileupload.FileUploadBase$InvalidContentTypeException: the request doesn't contain a multipart/form-data or multipart/mixed stream, content type header is application/x-www-form-urlencoded
	at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:948)
	at org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:310)
	at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:334)
	at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:115)
	at org.kohsuke.stapler.RequestImpl.parseMultipartFormData(RequestImpl.java:965)
	at org.kohsuke.stapler.RequestImpl.getFileItem(RequestImpl.java:1043)
	at io.jenkins.plugins.file_parameters.AbstractFileParameterDefinition.createValue(AbstractFileParameterDefinition.java:81)
	at io.jenkins.plugins.file_parameters.Base64FileParameterDefinition.createValue(Base64FileParameterDefinition.java:34)
	at hudson.model.ParametersDefinitionProperty.buildWithParameters(ParametersDefinitionProperty.java:182)
	at jenkins.model.ParameterizedJobMixIn.doBuildWithParameters(ParameterizedJobMixIn.java:236)
	at jenkins.model.ParameterizedJobMixIn$ParameterizedJob.doBuildWithParameters(ParameterizedJobMixIn.java:416)
	at …
Caused: javax.servlet.ServletException
	at org.kohsuke.stapler.RequestImpl.parseMultipartFormData(RequestImpl.java:972)
	at org.kohsuke.stapler.RequestImpl.getFileItem(RequestImpl.java:1043)
	at io.jenkins.plugins.file_parameters.AbstractFileParameterDefinition.createValue(AbstractFileParameterDefinition.java:81)
Caused: java.lang.RuntimeException
	at io.jenkins.plugins.file_parameters.AbstractFileParameterDefinition.createValue(AbstractFileParameterDefinition.java:94)
	at io.jenkins.plugins.file_parameters.Base64FileParameterDefinition.createValue(Base64FileParameterDefinition.java:34)
	at hudson.model.ParametersDefinitionProperty.buildWithParameters(ParametersDefinitionProperty.java:182)
	at jenkins.model.ParameterizedJobMixIn.doBuildWithParameters(ParameterizedJobMixIn.java:236)
	at jenkins.model.ParameterizedJobMixIn$ParameterizedJob.doBuildWithParameters(ParameterizedJobMixIn.java:416)
	at …