Hi all,
I'm attempting to update to Camel 4.10.4 but having issues generating routes
and models some open api schemas on recent versions of the
camel-restdsl-openapi-plugin.
Here is a simple example schema that I put together that is failing for me.
openapi: 3.0.4
info:
title: Sales API
version: 1.0.1
description: Sales API
paths:
/sales:
delete:
summary: Delete Sales
responses:
"200":
description: OK
If I switch the response to 202, it works.
If I add content to the 200 response it works.
As far as I can tell 200 with no specified content definition is valid.
These are not my API's so I'd prefer not to have to modify them all.
Maven snippet:
<plugin>
<groupId>org.apache.camel</groupId>
<artifactId>camel-restdsl-openapi-plugin</artifactId>
<version>4.10.4</version>
<executions>
<execution>
<id>example</id>
<goals>
<!--goal>generate</goal>-->
<goal>generate-with-dto</goal>
</goals>
<configuration>
<specificationUri>
${project.basedir}/src/main/resources/openapi_input/example.yaml</specificationUri>
<restConfiguration>false</restConfiguration>
<destinationGenerator></destinationGenerator>
<modelPackage>com.example</modelPackage>
<packageName>com.example.routes.gen</packageName>
<className>ExampleRestRoute</className>
<outputDirectory>
${project.build.directory}/generated-sources/routes</outputDirectory>
<configOptions>
<library>jersey2</library>
<swaggerAnnotations>false</swaggerAnnotations>
<additional-properties>
generateModelBuilders=yes,useJackson=true,sortParamsByRequiredFlag=false,useJacksonJsonIgnoreUnknownProperties=false</additional-properties>
<dateLibrary>java8</dateLibrary>
</configOptions>
</configuration>
</execution>
</executions>
</plugin>
I get the error:
[INFO] Generating Camel DSL source in directory:
D:\workspaces\functions\EIPCTM\guild-eip\target\generated-sources\routes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.995 s
[INFO] Finished at: 2025-05-02T08:49:04+10:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.camel:camel-restdsl-openapi-plugin:4.10.4:generate-with-dto
(example) on project eip: Execution example of goal
org.apache.camel:camel-restdsl-openapi-plugin:4.10.4:generate-with-dto failed:
Cannot invoke "io.swagger.v3.oas.models.media.Content.entrySet()" because the
return value of "io.swagger.v3.oas.models.responses.ApiResponse.getContent()"
is null -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.apache.camel:camel-restdsl-openapi-plugin:4.10.4:generate-with-dto
(example) on project guild-eip: Execution example of goal
org.apache.camel:camel-restdsl-openapi-plugin:4.10.4:generate-with-dto failed:
Cannot invoke "io.swagger.v3.oas.models.media.Content.entrySet()" because the
return value of "io.swagger.v3.oas.models.responses.ApiResponse.getContent()"
is null
at
org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2(MojoExecutor.java:333)
at
org.apache.maven.lifecycle.internal.MojoExecutor.doExecute(MojoExecutor.java:316)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:174)
at
org.apache.maven.lifecycle.internal.MojoExecutor.access$000(MojoExecutor.java:75)
at
org.apache.maven.lifecycle.internal.MojoExecutor$1.run(MojoExecutor.java:162)
at
org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute(DefaultMojosExecutionStrategy.java:39)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:159)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:105)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:73)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:53)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:118)
at
org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:261)
at
org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:173)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:101)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:906)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:283)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:206)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:255)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:201)
at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:361)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:314)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution example
of goal org.apache.camel:camel-restdsl-openapi-plugin:4.10.4:generate-with-dto
failed: Cannot invoke "io.swagger.v3.oas.models.media.Content.entrySet()"
because the return value of
"io.swagger.v3.oas.models.responses.ApiResponse.getContent()" is null
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:133)
at
org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2(MojoExecutor.java:328)
... 25 more
Caused by: java.lang.NullPointerException: Cannot invoke
"io.swagger.v3.oas.models.media.Content.entrySet()" because the return value of
"io.swagger.v3.oas.models.responses.ApiResponse.getContent()" is null
at
org.apache.camel.generator.openapi.OperationVisitor.emitOperation(OperationVisitor.java:229)
at
org.apache.camel.generator.openapi.OperationVisitor.visit(OperationVisitor.java:171)
at
org.apache.camel.generator.openapi.PathVisitor.lambda$visit$0(PathVisitor.java:46)
at
java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:721)
at
org.apache.camel.generator.openapi.PathVisitor.visit(PathVisitor.java:46)
at
org.apache.camel.generator.openapi.RestDslSourceCodeGenerator.generateConfigureMethod(RestDslSourceCodeGenerator.java:142)
at
org.apache.camel.generator.openapi.RestDslSourceCodeGenerator.generateSourceCode(RestDslSourceCodeGenerator.java:155)
at
org.apache.camel.generator.openapi.PathGenerator.generate(PathGenerator.java:33)
at
org.apache.camel.generator.openapi.PathGenerator.generate(PathGenerator.java:25)
at
org.apache.camel.maven.generator.openapi.GenerateMojo.execute(GenerateMojo.java:145)
at
org.apache.camel.maven.generator.openapi.GenerateWithDtoMojo.execute(GenerateWithDtoMojo.java:41)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:126)
... 26 more
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Solutions Architect - Software Engineer
Level 1, 132 Leichhardt Street, Spring Hill, QLD 4000
p: +61 3 7000 0405
w: guildgroup.com.au<https://www.guildgroup.com.au>
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