Terraform requires arguments that are optional when creating aws_iot_topic_rule

[jeandek]

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Terraform Version

Terraform v0.11.8

Affected Resource(s)

• aws_iot_topic_rule

Terraform Configuration Files

resource "aws_iot_topic_rule" "client_id_mapping" {
  name        = "${var.env_name}_client_id_mapping"
  enabled     = "true"

  sql = <<EOF
SELECT clientId, {"key": "value"} as mapping
FROM '$$aws/events/subscriptions/subscribed/#' 
EOF

  sql_version = "2016-03-23"

  dynamodb {
    hash_key_field  = "client_id"
    hash_key_value  = "$${clientId}"
    hash_key_type   = "STRING"
    range_key_field = ""
    range_key_value = ""
    payload_field   = "$${mapping}"
    table_name      = "${var.env_name}_client_id_mapping"
    role_arn        = "${aws_iam_role.client_id_mapping_role.arn}"
  }
}

Debug Output

>>> terraform apply --var-file=../../../variables/dev.tfvar
Error: aws_iot_topic_rule.client_id_mapping: "dynamodb.0.range_key_field": required field is not set
Error: aws_iot_topic_rule.client_id_mapping: "dynamodb.0.range_key_value": required field is not set

Expected Behavior

These range_key arguments of the DynamoDB action are optional according to the AWS API reference and the resource's TF documentation.

Actual Behavior

Both arguments are marked as required in the source code.

References

• iot_topic_rule TF docs
• CreateTopicRule API Reference
• DynamoDBAction API Reference

[jeandek]

The fix is probably to set "Optional: true" in the source code for both arguments, but I'm not comfortable enough with Go and Terraform to write tests for it...

[bflad]

The fix for this has been merged and will release with version 1.59.0 of the Terraform AWS Provider, likely in the next day or two. 👍

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!