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aws-cdkaws-samaws-sam-cli

AWS cdk running locally using sam

I have a CDK app which I generate template.yml file using:

cdk synth --no-staging > ./template.yml

and then run sam local:

sam local start-api

but I get the following error:

Traceback (most recent call last):
  File "/usr/local/bin/sam", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/decorators.py", line 73, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/telemetry/metric.py", line 166, in wrapped
    raise exception  # pylint: disable=raising-bad-type
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/telemetry/metric.py", line 124, in wrapped
    return_value = func(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/utils/version_checker.py", line 41, in wrapped
    actual_result = func(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/cli/main.py", line 87, in wrapper
    return func(*args, **kwargs)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/commands/local/start_api/cli.py", line 94, in cli
    do_cli(
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/commands/local/start_api/cli.py", line 192, in do_cli
    service = LocalApiService(lambda_invoke_context=invoke_context, port=port, host=host, static_dir=static_dir)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/commands/local/lib/local_api_service.py", line 37, in __init__
    self.api_provider = ApiProvider(lambda_invoke_context.stacks, cwd=self.cwd)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/providers/api_provider.py", line 37, in __init__
    self.api = self._extract_api()
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/providers/api_provider.py", line 64, in _extract_api
    provider.extract_resources(self.stacks, collector, cwd=self.cwd)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/providers/cfn_api_provider.py", line 73, in extract_resources
    self._extract_cfn_gateway_v2_route(stack.stack_path, resources, logical_id, resource, collector)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/providers/cfn_api_provider.py", line 315, in _extract_cfn_gateway_v2_route
    method, path = self._parse_route_key(route_key)
  File "/usr/local/Cellar/aws-sam-cli/1.37.0/libexec/lib/python3.8/site-packages/samcli/lib/providers/cfn_api_provider.py", line 488, in _parse_route_key
    [method, path] = route_key.split()
ValueError: not enough values to unpack (expected 2, got 1)

and ideas what's the issue?

Solution

  • It might be that you have an older version of AWS SAM. I have multiple projects that implement AWS CDK and use AWS SAM for local testing and they work without any issues!

    Your AWS SAM version seems to be 1.37.0, try to upgrade to the latest version and see if that allows you to use the two together.

    As a reference point: one of my projects uses AWS CDK version 2.53.0 with AWS SAM version 1.78.0.