openapi-generator-maven-plugin:5.0.1:generate Unable to read location src/main/openapi/project.yaml

[u14183]

[INFO]
[INFO] --- openapi-generator-maven-plugin:5.0.1:generate (default) @ foo ---
[WARN] Exception while reading:
io.swagger.v3.parser.exception.ReadContentException: Unable to read location `src/main/openapi/foo.yaml`
        at io.swagger.v3.parser.OpenAPIV3Parser.readContentFromLocation(OpenAPIV3Parser.java:238)
        at io.swagger.v3.parser.OpenAPIV3Parser.readLocation(OpenAPIV3Parser.java:87)
        at io.swagger.parser.OpenAPIParser.readLocation(OpenAPIParser.java:16)
        at org.openapitools.codegen.config.CodegenConfigurator.toContext(CodegenConfigurator.java:518)
        at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:568)
        at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:717)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.RuntimeException: Could not find src/main/openapi/foo.yaml on the classpath
        at io.swagger.v3.parser.util.ClasspathHelper.loadFileFromClasspath(ClasspathHelper.java:31)
        at io.swagger.v3.parser.OpenAPIV3Parser.readContentFromLocation(OpenAPIV3Parser.java:229)
        ... 17 common frames omitted
[ERROR] failed to read resource listing
java.lang.RuntimeException: Could not find src/main/openapi/foo.yaml on the classpath
        at io.swagger.parser.util.ClasspathHelper.loadFileFromClasspath(ClasspathHelper.java:31)
        at io.swagger.parser.SwaggerCompatConverter.readResourceListing(SwaggerCompatConverter.java:207)
        at io.swagger.parser.SwaggerCompatConverter.read(SwaggerCompatConverter.java:123)
        at io.swagger.parser.SwaggerCompatConverter.readWithInfo(SwaggerCompatConverter.java:94)
        at io.swagger.parser.SwaggerParser.readWithInfo(SwaggerParser.java:44)
        at io.swagger.v3.parser.converter.SwaggerConverter.readLocation(SwaggerConverter.java:89)
        at io.swagger.parser.OpenAPIParser.readLocation(OpenAPIParser.java:16)
        at org.openapitools.codegen.config.CodegenConfigurator.toContext(CodegenConfigurator.java:518)
        at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:568)
        at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:717)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
[INFO] Generating with dryRun=false
[WARN] Output directory does not exist, or is inaccessible. No file (.openapi-generator-ignore) will be evaluated.
[WARN] Z:\Workspaces\hpf-ghost-observer\ROOT\src\main\openapi\foo.yaml [0:0]: unexpected error in Open-API generation
java.lang.RuntimeException: missing OpenAPI input!
        at org.openapitools.codegen.DefaultGenerator.generate(DefaultGenerator.java:837)
        at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:739)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
[ERROR]
java.lang.RuntimeException: missing OpenAPI input!
        at org.openapitools.codegen.DefaultGenerator.generate(DefaultGenerator.java:837)
        at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:739)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
        at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

mvnd native client 0.4.1-windows-amd64 (2336bde9192e9d0ccc3a5d2bf13abc9f295e21a7)
Terminal: org.jline.terminal.impl.PosixSysTerminal with pty org.jline.terminal.impl.ExecPty
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: C:\Users\SteffenFlemming\.sdkman\candidates\mvnd\current\mvn
Java version: 11.0.9.1, vendor: AdoptOpenJDK, runtime: C:\Users\SteffenFlemming\.sdkman\candidates\java\current
Default locale: en, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

while with maven wrapper it works

[INFO]
[INFO] --- openapi-generator-maven-plugin:5.0.1:generate (default) @ foo ---
[INFO] Generating with dryRun=false
[WARNING] Output directory does not exist, or is inaccessible. No file (.openapi-generator-ignore) will be evaluated.
[INFO] OpenAPI Generator: java (client)
[INFO] Generator 'java' is considered stable.
[INFO] Environment variable JAVA_POST_PROCESS_FILE not defined so the Java code may not be properly formatted. To define it, try 'export JAVA_POST_PROCESS_FILE="/usr/local/bin/clang-format -i"' (Linux/Mac)
[INFO] NOTE: To enable file post-processing, 'enablePostProcessFile' must be set to `true` (--enable-post-process-file for CLI).
[INFO] Invoker Package Name, originally not set, is now derived from api package name: de.openapi
[INFO] Processing operation getProjects
[INFO] Processing operation getProjectDetails

Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)
Maven home: C:\Users\SteffenFlemming\.m2\wrapper\dists\apache-maven-3.8.1-bin\2l5mhf2pq2clrde7f7qp1rdt5m\apache-maven-3.8.1
Java version: 11.0.9.1, vendor: AdoptOpenJDK, runtime: C:\Users\SteffenFlemming\.sdkman\candidates\java\current
Default locale: de_DE, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

[gnodet]

Could you set up a small project to reproduce the problem easily ?

[u14183]

I have set up first one sinmplest project, which was surprisingly working.
Coincidentally I was switching to an other project and noticed, that after switching back it was not longer working.
So I created a 2. simple project and run same mvnd clean compile command.
I am not sure if I can explain it.
Here is what I did:

cd mvndOpenApiOne/
mvnd clean compile >>runOne.log
cd ../mvndOpenApiTwo/
mvnd clean compile >>run.log
./mvnw clean compile >>mvnw-run.log

Logs are attached:
runOne.log
runTwo.log
mvnw-run.log

Workspaces.zip

[gnodet]

@u14183 could you make sure you're running the latest mvnd 0.4.3 ?
Also could you retry after modifying the pom to use:

<inputSpec>${project.basedir}/src/main/openapi/projectTwo.yaml</inputSpec>

in the plugin configuration ?

[u14183]

mvnd native client 0.4.3-windows-amd64 (e20989d)
was not helping

[u14183]

adding ${project.basedir} is changing something, but not working:

[INFO] --- openapi-generator-maven-plugin:5.0.1:generate (generate-openapi-client) @ hpf-dms ---
[ERROR] failed to read resource listing
com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'openapi': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false')
at [Source: (String)"openapi: 3.0.2
servers:

• url: /v3
  info:
  description: |-
  This is a sample Pet Store Server based on the OpenAPI 3.0 specification. You can find out more about
  Swagger at http://swagger.io. In the third iteration of the pet store, we've switched to the design first approach!
  You can now help us improve the API whether it's by making changes to the definition itself or to the code.
  That way, with time, we can improve the API in general, and expose "[truncated 22314 chars]; line: 1, column: 8]
  at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1840)
  at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:722)
  at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:2868)
  at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:1914)
  at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:773)
  at com.fasterxml.jackson.databind.ObjectMapper._readTreeAndClose(ObjectMapper.java:4511)
  at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:2940)
  at io.swagger.parser.SwaggerCompatConverter.readResourceListing(SwaggerCompatConverter.java:210)
  at io.swagger.parser.SwaggerCompatConverter.read(SwaggerCompatConverter.java:123)
  at io.swagger.parser.SwaggerCompatConverter.readWithInfo(SwaggerCompatConverter.java:94)
  at io.swagger.parser.SwaggerParser.readWithInfo(SwaggerParser.java:44)
  at io.swagger.v3.parser.converter.SwaggerConverter.readLocation(SwaggerConverter.java:89)
  at io.swagger.parser.OpenAPIParser.readLocation(OpenAPIParser.java:16)
  at org.openapitools.codegen.config.CodegenConfigurator.toContext(CodegenConfigurator.java:518)
  at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:568)
  at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:717)
  at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
  at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
  at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
  at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
  at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)
  [INFO] Generating with dryRun=false
  [WARN] Output directory does not exist, or is inaccessible. No file (.openapi-generator-ignore) will be evaluated.
  [WARN] T:\m\Workspaces\mvndOpenApiTwo\src\main\openapi\projectTwo.yaml [0:0]: unexpected error in Open-API generation
  java.lang.RuntimeException: missing OpenAPI input!
  at org.openapitools.codegen.DefaultGenerator.generate(DefaultGenerator.java:837)
  at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:739)
  at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
  at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
  at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
  at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
  at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)
  [ERROR]
  java.lang.RuntimeException: missing OpenAPI input!
  at org.openapitools.codegen.DefaultGenerator.generate(DefaultGenerator.java:837)
  at org.openapitools.codegen.plugin.CodeGenMojo.execute(CodeGenMojo.java:739)
  at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
  at org.mvndaemon.mvnd.builder.SmartBuilderImpl.buildProject(SmartBuilderImpl.java:178)
  at org.mvndaemon.mvnd.builder.SmartBuilderImpl$ProjectBuildTask.run(SmartBuilderImpl.java:198)
  at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
  at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 2.745 s (Wall Clock)
  [INFO] Finished at: 2021-05-12T10:31:49+02:00
  [INFO] ------------------------------------------------------------------------
  [ERROR] Failed to execute goal org.openapitools:openapi-generator-maven-plugin:5.0.1:generate (generate-openapi-client) on project hpf-dms: Code generation failed. See above for the full exception. -> [Help 1]
  [ERROR]
  [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  [ERROR]
  [ERROR] For more information about the errors and possible solutions, please read the following articles:
  [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

[gnodet]

On windows, the daemon does not change the current dir correctly, so that needs to be fixed.