`cfn generate` - TypeError: unhashable type: 'OrderedSet'

[x6j8x]

Hi,

we have a "oneOf" entry in our model and I suspect this to be culprit (but I don't know for sure).

With older versions of cfn-cli and the go-plugin this is generated just fine. But it breaks for 2.0.4 with the error above.

Complete stacktrace:

[2021-03-24T10:24:47Z] DEBUG    - Unhandled exception
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/rpdk/core/cli.py", line 100, in main
    args.command(args)
  File "/usr/local/lib/python3.9/site-packages/rpdk/core/generate.py", line 15, in generate
    project.generate()
  File "/usr/local/lib/python3.9/site-packages/rpdk/core/project.py", line 408, in generate
    self._plugin.generate(self)
  File "/usr/local/lib/python3.9/site-packages/rpdk/go/codegen.py", line 171, in generate
    contents = template.render(models=models)
  File "/usr/local/lib/python3.9/site-packages/jinja2/environment.py", line 1090, in render
    self.environment.handle_exception()
  File "/usr/local/lib/python3.9/site-packages/jinja2/environment.py", line 832, in handle_exception
    reraise(*rewrite_traceback_stack(source=source))
  File "/usr/local/lib/python3.9/site-packages/jinja2/_compat.py", line 28, in reraise
    raise value.with_traceback(tb)
  File "/usr/local/lib/python3.9/site-packages/rpdk/go/templates/types.go.tple", line 15, in top-level template code
    {{ name|uppercase_first_letter }} {{ type|translate_type }} `json:",omitempty"`
  File "/usr/local/lib/python3.9/site-packages/rpdk/go/resolver.py", line 40, in translate_type
    return "*" + PRIMITIVE_TYPES[resolved_type.type]
TypeError: unhashable type: 'OrderedSet'

[SuperMohit]

@x6j8x Were you able to fix this issue?

[x6j8x]

@SuperMohit Kind of… We pinned 2.0.3 and as this repo is more dead than alive, that’s not the worst solution. ymmv 🤷‍♂️

[SuperMohit]

@SuperMohit Thanks for the reply.

[SuperMohit]

@x6j8x You mean 1.0.3 right?

[x6j8x]

I can’t remember the exact circumstances (it’s been a long time), but we actually pin 2.0.3.

pip3 install -q --upgrade cloudformation-cli-go-plugin==2.0.3

[SuperMohit]

@x6j8x Thanks it works with 2.0.3.

[FlorianSW]

Just tried out 2.0.4 with the latest cloudformation-cli version (0.2.28 I believe), and this error seems to magically have disappeared. (I just checked that out to get rid of the invalid_create contract test from https://github.com/aws-cloudformation/cloudformation-cli/pull/734).

[SuperMohit]

actually for my case, even with 2.0.3, although contract test passed but on deploying template it would throw extraneous key all over. So had to remove polymorphic props.