How to make ref files changes invalidate cache when running GenerateSwaggerCode?

[galargh]

Question

I'm running GenerateSwaggerCode task on input yaml that contains multiple $refs. With such a setup, gradle doesn't pick up referenced files as input files for the task. Hence, it caches the task output and doesn't rerun the task on content changes in any of the referenced files.

What's the correct approach to both keep using gradle cache and rerun generation on ref changes?

As a workaround, I've added the directory which contains the referenced files as templateDir. So now my codegen task definition looks like that:

devCodegen {
  inputFile = file("${projectDir}/src/main/swagger/schema/api.yml")
    code {
      language = "java"
      outputDir = file("${buildDir}/swagger/codegen/api")
      additionalProperties = [...]
      wipeOutputDir = false
      templateDir = file("${projectDir}/src/main/swagger/schema")
    }
  }

Environment

Plugin version: 2.15.0
Swagger Codegen version: 2.2.3
Gradle version: 5.1.1
Java version: 8
OS: OSX

[galargh]

I think I got it. Specifying code.input.files seems to do the trick :)

devCodegen {
  inputFile = file("${projectDir}/src/main/swagger/schema/api.yml")
  code {
    input.files "${projectDir}/src/main/swagger/schema"
    language = "java"
    outputDir = file("${buildDir}/swagger/codegen/api")
    additionalProperties = [...]
    wipeOutputDir = false
  }
}

[anascotti]

input.files is not recognized by GenerateSwaggerCode task

> Could not get unknown property 'input' for task ':acquiring-core:generateSwaggerCode' of type org.hidetake.gradle.swagger.generator.GenerateSwaggerCode.

Plugin version: 2.18.2
Swagger Codegen version: 2.4.18
Gradle version: 6.8.3

[galargh]

input.files is not recognized by GenerateSwaggerCode task

> Could not get unknown property 'input' for task ':acquiring-core:generateSwaggerCode' of type org.hidetake.gradle.swagger.generator.GenerateSwaggerCode.

Plugin version: 2.18.2
Swagger Codegen version: 2.4.18
Gradle version: 6.8.3

@anascotti I probably missed a trailing s in my workaround. You can try inputs.files instead. Because it's getInputs on DefaultTask, not getInput (https://docs.gradle.org/current/javadoc/org/gradle/api/Task.html#getInputs--).