awscc_apigateway_method permanent diff within integration_responses block

[breathingdust]

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Terraform CLI and Terraform AWS Cloud Control Provider Version

Affected Resource(s)

• awscc_apigateway_method

Terraform Configuration Files

Please include all Terraform configurations required to reproduce the bug. Bug reports without a functional reproduction may be closed without investigation.

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 4.38"
    }

    awscc = {
      source  = "hashicorp/awscc"
      version = "~> 0.38"
    }
  }
}

provider "awscc" {
  region = "us-west-2"
}

provider "aws" {
  region = "us-west-2"
}

data "aws_region" "current" {}

resource "aws_api_gateway_rest_api" "repro" {
  name = "repro"
  endpoint_configuration {
    types = ["EDGE"]
  }  
}

resource "awscc_apigateway_method" "post" {
  rest_api_id = aws_api_gateway_rest_api.repro.id
  resource_id = aws_api_gateway_rest_api.repro.root_resource_id
  http_method = "POST"
  authorization_type = "NONE"

  integration = {
    type = "AWS"
    integration_http_method = "POST"
    uri                     = "arn:aws:apigateway:${data.aws_region.current.name}:lambda:path/2015-03-31/functions/${awscc_lambda_function.function.arn}/invocations"
    integration_responses = [
      {
        status_code = "200"    
        response_parameters = {
          "method.response.header.Access-Control-Allow-Origin" = "'*'"
        }
      }
    ]
  }

  method_responses = [
    {
      status_code = "200"
      response_models = {
        "application/json" = "Empty"
      }
      response_parameters = {
          "method.response.header.Access-Control-Allow-Headers" = true,
          "method.response.header.Access-Control-Allow-Methods" = true,
          "method.response.header.Access-Control-Allow-Origin" = true
      }
    }
  ]
}

resource "awscc_lambda_function" "function" {
    function_name = "foo"
    runtime = "python3.8"
    code = {
        zip_file = <<EOT
import boto3

    return {
        'statusCode': 200,
        'body': json.dumps('Hello from Lambda', ' + name')
    }
EOT
    }
    role = awscc_iam_role.role.arn
    handler = "index.lambda_handler"
}

resource "awscc_iam_role" "role" {
    assume_role_policy_document = jsonencode({
      "Version": "2012-10-17",
      "Statement": [
        {
          "Action": "sts:AssumeRole",
          "Principal": {
            "Service": "lambda.amazonaws.com"
          },
          "Effect": "Allow",
          "Sid": ""
        }
      ]
    })
}

Debug Output

Panic Output

Expected Behavior

No changes detected and no plan generated

Actual Behavior

Plan generated:

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # awscc_apigateway_method.post will be updated in-place
  ~ resource "awscc_apigateway_method" "post" {
      + authorization_scopes = (known after apply)
      + authorizer_id        = (known after apply)
        id                   = "e9h31f2rfj|t7ly4shwy6|POST"
      ~ integration          = {
          + cache_key_parameters    = (known after apply)
          + connection_id           = (known after apply)
          + connection_type         = (known after apply)
          + content_handling        = (known after apply)
          + credentials             = (known after apply)
          ~ integration_responses   = [
              ~ {
                  + content_handling    = (known after apply)
                  + response_templates  = (known after apply)
                  + selection_pattern   = (known after apply)
                    # (2 unchanged attributes hidden)
                },
            ]
          + request_parameters      = (known after apply)
          + request_templates       = (known after apply)
            # (6 unchanged attributes hidden)
        }
      + operation_name       = (known after apply)
      + request_models       = (known after apply)
      + request_parameters   = (known after apply)
      + request_validator_id = (known after apply)
        # (6 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Steps to Reproduce

1. terraform apply
2. terraform plan

Important Factoids

References

Potentially related to: hashicorp/terraform#31887