Cannot perform any Terraform action (plan, apply) when TF state contains a computed element of type: schema.TypeMap with a key containing a dot

[dwalasek]

SDK version

v2.34.0

Relevant provider source code

The problem occurs if we have field defined as Computed and of Type: schema.TypeMap, like:

"test": {
				Type:        schema.TypeMap,
				Computed:    true,
				Elem: &schema.Schema{
					Type: schema.TypeInt,
				},
			}

And when key of this element contains dot and it's stored in state, like:

            "test": {
              "foo": 1000,
              "foo.bar": 1000
            },

Terraform Configuration Files

terraform {
  required_providers {
    signalfx = {
      source = "splunk-terraform/signalfx"
   }
  }
}


provider "signalfx" {
}

resource "signalfx_detector" "d" {
  name = "testing terraform"
  program_text = <<-EOT
detect(when(const(0) > const(1))).publish('foo')
detect(when(const(0) > const(1))).publish('foo.bar')
EOT

  rule {
    detect_label = "foo"
    parameterized_body = "#"
    severity = "Info"
  }
  rule {
    detect_label = "foo.bar"
    parameterized_body = "#"
    severity = "Info"
  }
}

Debug Output

Following exception is thrown:

goroutine 15 [running]:
github.com/hashicorp/terraform-plugin-sdk/v2/terraform.(*ResourceConfig).get(0x14000272cd0, {0x1400049c760, 0x1b}, 0x140000bbb60)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/terraform/resource.go:335 +0x7b0
github.com/hashicorp/terraform-plugin-sdk/v2/terraform.(*ResourceConfig).IsComputed(0x14000272cd0, {0x1400049c760, 0x1b})
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/terraform/resource.go:248 +0x50
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*ConfigFieldReader).readMap(0x140001de6f0, {0x10170fc85, 0x11}, 0x14000502000)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/field_reader_config.go:192 +0xa84
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*ConfigFieldReader).readField(0x140001de6f0, {0x14000409080, 0x1, 0x1}, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/field_reader_config.go:108 +0x91c
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*ConfigFieldReader).ReadField(0x140001de6f0, {0x14000409080, 0x1, 0x1})
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/field_reader_config.go:32 +0xa8
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*MultiLevelFieldReader).ReadFieldExact(0x1400029d6e0, {0x14000409080, 0x1, 0x1}, {0x101706390, 0x6})
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/field_reader_multi.go:34 +0xec
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*ResourceData).get(0x140003ef580, {0x14000409080, 0x1, 0x1}, 0x2)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/resource_data.go:551 +0x1a0
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*ResourceData).getChange(0x140003ef580, {0x10170fc85, 0x11}, 0x1, 0x12)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/resource_data.go:527 +0x11c
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*ResourceData).diffChange(0x140003ef580, {0x10170fc85, 0x11})
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/resource_data.go:504 +0x70
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.schemaMap.diffMap(0x140003d7b00, {0x10170fc85, 0x11}, 0x14000502000, 0x140003e17b8, {0x1019a1c78, 0x140003ef580}, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/schema.go:1302 +0x104
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.schemaMap.diff(0x140003d7b00, {0x10199f3a0, 0x140002cf0b0}, {0x10170fc85, 0x11}, 0x14000502000, 0x140003ef500, {0x1019a1c78, 0x140003ef580}, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/schema.go:1132 +0x1a0
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.schemaMap.Diff(0x140003d7b00, {0x10199f3a0, 0x140002cf0b0}, 0x140003d2c30, 0x14000272cd0, 0x1400045e960, {0x1018297c0, 0x140000a7e80}, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/schema.go:678 +0x408
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).SimpleDiff(0x140004736c0, {0x10199f3a0, 0x140002cf0b0}, 0x140003d2c30, 0x14000272cd0, {0x1018297c0, 0x140000a7e80})
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/resource.go:962 +0x8c
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*GRPCProviderServer).PlanResourceChange(0x140005b0000, {0x10199f3a0, 0x140002cf0b0}, 0x14000059130)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema/grpc_provider.go:792 +0xf54
github.com/hashicorp/terraform-plugin-go/tfprotov5/tf5server.(*server).PlanResourceChange(0x140005b4000, {0x10199f3a0, 0x140002cef30}, 0x140002a8ee0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-go/tfprotov5/tf5server/server.go:824 +0x584
github.com/hashicorp/terraform-plugin-go/tfprotov5/internal/tfplugin5._Provider_PlanResourceChange_Handler({0x101962440, 0x140005b4000}, {0x10199f3a0, 0x140002ce270}, 0x140002a8e70, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/github.com/hashicorp/terraform-plugin-go/tfprotov5/internal/tfplugin5/tfplugin5_grpc.pb.go:449 +0x28c
google.golang.org/grpc.(*Server).processUnaryRPC(0x140002921e0, {0x1019a29c0, 0x14000490d00}, 0x140003d8b40, 0x1400058e8a0, 0x101ef2a60, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/google.golang.org/grpc/server.go:1358 +0x1260
google.golang.org/grpc.(*Server).handleStream(0x140002921e0, {0x1019a29c0, 0x14000490d00}, 0x140003d8b40, 0x0)
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/google.golang.org/grpc/server.go:1735 +0x71c
google.golang.org/grpc.(*Server).serveStreams.func1.1()
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/google.golang.org/grpc/server.go:970 +0x118
created by google.golang.org/grpc.(*Server).serveStreams.func1 in goroutine 41
        /Users/dwalasek/go/src/github.com/splunk-terraform/terraform-provider-signalfx/vendor/google.golang.org/grpc/server.go:981 +0x1fc

Expected Behavior

Terraform SDK should be able to parse a state with element of schema.TypeMap with a key containing a dot

Actual Behavior

Terraform SDK is not able to parse a state with element of schema.TypeMap with a key containing a dot... and all subsequent call for plan, apply is failing

Steps to Reproduce

1. Use terraform code from section: Terraform Configuration Files
2. Terraform init
3. Terraform plan (it ends with success)
4. Terraform apply (it ends with success)
5. All subsequent action for terraform plan/apply end with failure like mentioned above

[austinvalle]

Quick drive-by comment 🚗 , this is a duplicate of a known issue (#658) and is fixed/fully supported in terraform-plugin-framework