tfk8s crashes when piped a kube-promethes ServiceMonitor

[Juan Felipe Lujan]

Greetings.

i have a fresh installation of kube-prometheus
It generates a CRD called ServiceMonitor.

When I pipe one of those CR into tfk8s it crashes gracefully.
Stack below

 k describe ServiceMonitor grafana -n monitoring | tfk8s  
panic: not a string

goroutine 1 [running]:
runtime/debug.Stack()
        /usr/local/go/src/runtime/debug/stack.go:24 +0x65
main.capturePanic()
        /Users/felipe/go/pkg/mod/github.com/jrhouston/tfk8s@v0.1.7/tfk8s.go:219 +0x39
panic({0x1173480, 0x11d9710})
        /usr/local/go/src/runtime/panic.go:1038 +0x215
github.com/zclconf/go-cty/cty.Value.AsString({{{0x0, 0x0}}, {0x0, 0x0}})
        /Users/felipe/go/pkg/mod/github.com/zclconf/go-cty@v1.8.0/cty/value_ops.go:1251 +0x138
main.yamlToHCL({{{0x11de128, 0xc0001ca220}}, {0x117adc0, 0xc0001ab2c0}}, {0x0, 0x0}, 0x0, 0x0)
        /Users/felipe/go/pkg/mod/github.com/jrhouston/tfk8s@v0.1.7/tfk8s.go:101 +0x11c
main.YAMLToTerraformResources({0x11daba0, 0xc000126000}, {0x0, 0x0}, 0x0, 0x0)
        /Users/felipe/go/pkg/mod/github.com/jrhouston/tfk8s@v0.1.7/tfk8s.go:194 +0x2d7
main.main()
        /Users/felipe/go/pkg/mod/github.com/jrhouston/tfk8s@v0.1.7/tfk8s.go:251 +0x334


⚠️  Oh no! Looks like your manifest caused tfk8s to crash.

Please open a GitHub issue and include your manifest YAML with the stack trace above,
or ping me on slack and I'll try and fix it!

GitHub: https://github.com/jrhouston/tfk8s/issues
Slack: #terraform-providers on https://kubernetes.slack.com

- Thanks, @jrhouston

[John Houston]

I just tried this and it worked for me (using the helm chart to install the prometheus stack):

kubctl get servicemonitor prometheus-kube-prometheus-grafana -o yaml | tfk8s
resource "kubernetes_manifest" "servicemonitor_prometheus_kube_prometheus_grafana" {
  manifest = {
    "apiVersion" = "monitoring.coreos.com/v1"
    "kind" = "ServiceMonitor"
    "metadata" = {
      "annotations" = {
        "meta.helm.sh/release-name" = "prometheus"
        "meta.helm.sh/release-namespace" = "default"
      }
      "creationTimestamp" = "2021-10-16T09:08:48Z"
      "generation" = 1
      "labels" = {
        "app" = "kube-prometheus-stack-grafana"
        "app.kubernetes.io/instance" = "prometheus"
        "app.kubernetes.io/managed-by" = "Helm"
        "app.kubernetes.io/part-of" = "kube-prometheus-stack"
        "app.kubernetes.io/version" = "19.1.0"
        "chart" = "kube-prometheus-stack-19.1.0"
        "heritage" = "Helm"
        "release" = "prometheus"
      }
      "name" = "prometheus-kube-prometheus-grafana"
      "namespace" = "default"
      "resourceVersion" = "96148"
      "uid" = "45ade0f2-4b33-499f-89d0-fccb73ab74f9"
    }
    "spec" = {
      "endpoints" = [
        {
          "path" = "/metrics"
          "port" = "service"
        },
      ]
      "selector" = {
        "matchLabels" = {
          "app.kubernetes.io/instance" = "prometheus"
          "app.kubernetes.io/name" = "grafana"
        }
      }
    }
  }
}

I noticed here you used kubectl describe:

k describe ServiceMonitor grafana -n monitoring | tfk8s

which wont work because the output of describe is not YAML – although I see a different error from you when I try it.