Provider produced inconsistent final plan error when importing a schema into terraform state

[ismaila96]

Hi,

We are facing an issue when importing a schema that is created through confluent cloud platform into terraform.

Terraform Version : latest
Confluent Provider Version : 1.74.0

Steps to reproduce the error:

1. Create a a new schema test-import-topic in a schema registry either by creating a new one without a topic or setting a schema to an existing topic
2. Download the created schema file test-import-topic.avsc and set it in schemas directory where the IaC terraform project is located
3. Run the following code:

`topics = [
{
name = "test-import-topic"
partitions = 2
schema_file_name = "test-import-topic.avsc"
}
]

locals {
topics = merge({ for topic in var.topics : topic.name => topic })
}

variable "topics" {
type = any
}

resource "confluent_schema_registry_cluster" "this" {
package = data.confluent_schema_registry_region.this.package
environment {
id = confluent_environment.this.id
}
region {
id = data.confluent_schema_registry_region.this.id
}
lifecycle {
prevent_destroy = true
}
}

resource "confluent_schema" "this" {
for_each = local.topics
schema_registry_cluster {
id = confluent_schema_registry_cluster.this.id
}
rest_endpoint = confluent_schema_registry_cluster.this.rest_endpoint
subject_name = "${each.value.name}-value"
format = "AVRO"
schema = file("${var.SCHEMAS_DIRECTORY}/${each.value.schema_file_name}")
credentials {
key = confluent_api_key.schema_registry_api_key.id
secret = confluent_api_key.schema_registry_api_key.secret
}
lifecycle {
prevent_destroy = true
}
}

import {
for_each = local.topics
id = "${var.config.schema_registry.id}/${each.value.name}-value/latest"
to = confluent_schema.this[each.key]
}`

Error

Error: Provider produced inconsistent final plan │ │ When expanding the plan for confluent_schema.this["test-import-topic"] to │ include new values learned so far during apply, provider │ "registry.terraform.io/confluentinc/confluent" produced an invalid new │ value for .schema: was cty.StringVal("{\n \"doc\": \"Sample schema to │ help you get started.\",\n \"fields\": [\n {\n \"doc\": │ \"The id of the order.\",\n \"name\": \"orderId\",\n │ \"type\": \"int\"\n },\n {\n \"doc\": \"Timestamp of the │ order.\",\n \"name\": \"orderTime\",\n \"type\": \"int\"\n │ },\n {\n \"doc\": \"The address of the order.\",\n │ \"name\": \"orderAddress\",\n \"type\": \"string\"\n }\n │ ],\n \"name\": \"sampleRecord\",\n \"namespace\": │ \"com.mycorp.mynamespace\",\n \"type\": \"record\"\n}"), but now │ cty.StringVal("{\"type\":\"record\",\"name\":\"sampleRecord\",\"namespace\":\"com.mycorp.mynamespace\",\"doc\":\"Sample │ schema to help you get │ started.\",\"fields\":[{\"name\":\"orderId\",\"type\":\"int\",\"doc\":\"The │ id of the │ order.\"},{\"name\":\"orderTime\",\"type\":\"int\",\"doc\":\"Timestamp of │ the order.\"},{\"name\":\"orderAddress\",\"type\":\"string\",\"doc\":\"The │ address of the order.\"}]}"). │ │ This is a bug in the provider, which should be reported in the provider's │ own issue tracker.

[linouk23]

Thanks for creating the issue @ismaila96!

As a quick way to mitigate the issue, could you update test-import-topic.avsc to match its response / formatting from Get Schema API request?

We'll track the long term fix separately.

[ismaila96]

Hi @linouk23

Thanks for your quick response. I have tried your suggested solution but the same error is showing up.

I have already tried the following approaches:

• Copying the GET /schemas/ids//schema
• Downloading the schema from confluent platform
• Copying it manually
• Copying the expected value that is know during terraform apply