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[FEATURE] allow "Json-Path expression yielded no results" to default to an empty string parameter #209

@nsgcynera

Description

@nsgcynera

Is your feature request related to a problem? Please describe.
If my REST endpoint returns an empty list - which in my case is a valid response - I get an error when starting the build.

Describe the solution you'd like
I would like to be able to have an empty list returned and start the build with no value (or an empty string) in this field. I would like this to be a configurable permission per variable.

Describe alternatives you've considered
I have considered always returning at least 1 item, an empty string, in the response array from my REST endpoint.

Additional context
Here is the message indicated by the REST List Parameter before hitting Build. In my case, no results is 🟢OK
image

And here is the resulting error:

2024-09-10 20:19:53.036+0000 [id=27]        WARNING h.i.i.InstallUncaughtExceptionHandler#handleException: Caught unhandled exception with ID adda3c65-7286-4ff0-ab12-92db31575e55
java.lang.IllegalArgumentException: Illegal value for parameter deployTarget: 
    at io.jenkins.plugins.restlistparam.RestListParameterDefinition.checkValue(RestListParameterDefinition.java:252)
    at io.jenkins.plugins.restlistparam.RestListParameterDefinition.createValue(RestListParameterDefinition.java:246)
    at hudson.model.ParametersDefinitionProperty._doBuild(ParametersDefinitionProperty.java:167)
    at jenkins.model.ParameterizedJobMixIn.doBuild(ParameterizedJobMixIn.java:214)
    at jenkins.model.ParameterizedJobMixIn$ParameterizedJob.doBuild(ParameterizedJobMixIn.java:404)
    at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(Unknown Source)
    at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:397)
    at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:409)
    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:207)
    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:140)
    at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:558)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:770)
Caused: javax.servlet.ServletException
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:818)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900)
    at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:289)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:770)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900)
    at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:289)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:770)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:900)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:698)
    at org.kohsuke.stapler.Stapler.service(Stapler.java:248)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:590)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)
    at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:163)
    at org.jenkinsci.plugins.corsfilter.AccessControlsFilter.doFilter(AccessControlsFilter.java:79)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160)
    at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:248)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160)
    at io.jenkins.blueocean.ResourceCacheControl.doFilter(ResourceCacheControl.java:134)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160)
    at io.jenkins.blueocean.auth.jwt.impl.JwtAuthenticationFilter.doFilter(JwtAuthenticationFilter.java:60)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160)
    at jenkins.util.HttpServletFilter$1.doFilter(HttpServletFilter.java:76)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:160)
    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:166)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at jenkins.ErrorAttributeFilter.doFilter(ErrorAttributeFilter.java:29)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:154)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:94)
    at jenkins.security.AcegiSecurityExceptionFilter.doFilter(AcegiSecurityExceptionFilter.java:52)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:54)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:110)
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:101)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:227)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:221)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:97)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:117)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:63)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:111)
    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:172)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:53)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:86)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at jenkins.security.SuspiciousRequestFilter.doFilter(SuspiciousRequestFilter.java:38)
    at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
    at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:569)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1580)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1553)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
    at org.eclipse.jetty.server.Server.handle(Server.java:563)
    at org.eclipse.jetty.server.HttpChannel$RequestDispatchable.dispatch(HttpChannel.java:1598)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:753)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:501)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:287)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
    at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:421)
    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:390)
    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:277)
    at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:199)
    at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)
    at java.base/java.lang.Thread.run(Unknown Source)
    ```

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