Panic in resourceDigitalOceanAppRead

[nightvisi0n]

Bug Report

Today I tried to apply my terraform config, which ended in the following error:

Stack trace from the terraform-provider-digitalocean_v2.11.1 plugin:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xdfe531]

goroutine 72 [running]:
github.com/digitalocean/terraform-provider-digitalocean/digitalocean.resourceDigitalOceanAppRead(0x123ae98, 0xc0000ad620, 0xc00052a000, 0xf60860, 0xc0005af740, 0xc000437920, 0xc00062b908, 0x40e0f8)
        github.com/digitalocean/terraform-provider-digitalocean/digitalocean/resource_digitalocean_app.go:111 +0x471
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).read(0xc0001888c0, 0x123ae28, 0xc0003c7700, 0xc00052a000, 0xf60860, 0xc0005af740, 0x0, 0x0, 0x0)
        github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/schema/resource.go:347 +0x17f
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).RefreshWithoutUpgrade(0xc0001888c0, 0x123ae28, 0xc0003c7700, 0xc0003ac7e0, 0xf60860, 0xc0005af740, 0xc0004967a0, 0x0, 0x0, 0x0)
        github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/schema/resource.go:624 +0x1cb
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*GRPCProviderServer).ReadResource(0xc0000b0090, 0x123ae28, 0xc0003c7700, 0xc0003c7740, 0xc0003c7700, 0x40b965, 0x1007960)
        github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/schema/grpc_provider.go:575 +0x43b
github.com/hashicorp/terraform-plugin-go/tfprotov5/server.(*server).ReadResource(0xc0000ba380, 0x123aed0, 0xc0003c7700, 0xc0008923c0, 0xc0000ba380, 0xc000739620, 0xc000815ba0)
        github.com/hashicorp/[email protected]/tfprotov5/server/server.go:298 +0x105
github.com/hashicorp/terraform-plugin-go/tfprotov5/internal/tfplugin5._Provider_ReadResource_Handler(0x1049820, 0xc0000ba380, 0x123aed0, 0xc000739620, 0xc000892360, 0x0, 0x123aed0, 0xc000739620, 0xc00042ec00, 0x1065)
        github.com/hashicorp/[email protected]/tfprotov5/internal/tfplugin5/tfplugin5_grpc.pb.go:344 +0x214
google.golang.org/grpc.(*Server).processUnaryRPC(0xc0000d6540, 0x1244738, 0xc000642f00, 0xc000820000, 0xc0005ae120, 0x17d8b90, 0x0, 0x0, 0x0)
        google.golang.org/[email protected]/server.go:1194 +0x52b
google.golang.org/grpc.(*Server).handleStream(0xc0000d6540, 0x1244738, 0xc000642f00, 0xc000820000, 0x0)
        google.golang.org/[email protected]/server.go:1517 +0xd0c
google.golang.org/grpc.(*Server).serveStreams.func1.2(0xc0000b61c0, 0xc0000d6540, 0x1244738, 0xc000642f00, 0xc000820000)
        google.golang.org/[email protected]/server.go:859 +0xab
created by google.golang.org/grpc.(*Server).serveStreams.func1
        google.golang.org/[email protected]/server.go:857 +0x1fd

Error: The terraform-provider-digitalocean_v2.11.1 plugin crashed!

It seems this bug occurs in any operation where the current state from the DO App Platform has to be read.

The terraform config uses the following resources:

• digitalocean_database_cluster
• digitalocean_database_db
• digitalocean_database_user
• digitalocean_app

If you need any more info please let me know.

[danaelhe]

Hi there,

Would it be possible to include your terraform config file? Has this config file always been erroring out or has it ever been successful?

Thanks!

[nightvisi0n]

Hi, after further investigation it seems like this only happens if the initial deployment fails (e.g. due to a missing image in DOCR).
The same config worked after a manual (successful) deployment.
I think this bug is reproducible by deploying a minimal app with a non-existent DOCR image (which will fail).

[andrewsomething]

Thanks for the follow up @nightvisi0n. This is clearly an error state. We should be checking for the active deployment here and erroring out if it does not exist before trying to access its ID rather than panicking.

terraform-provider-digitalocean/digitalocean/resource_digitalocean_app.go

Line 111 in b18890c

d.Set("active_deployment_id", app.ActiveDeployment.ID)