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capture stderr from tf init and send it back to the controller
Signed-off-by: Chanwit Kaewkasi <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| package runner | ||
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| import ( | ||
| "bytes" | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| "io" | ||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "os" | ||
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| "github.com/hashicorp/terraform-exec/tfexec" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| ) | ||
|
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| func (r *TerraformRunnerServer) tfInit(ctx context.Context, opts ...tfexec.InitOption) error { | ||
| log := ctrl.LoggerFrom(ctx, "instance-id", r.InstanceID).WithName(loggerName) | ||
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| // This is the only place where we disable the logger | ||
| r.tf.SetStdout(io.Discard) | ||
| errBuf := &bytes.Buffer{} | ||
| r.tf.SetStderr(errBuf) | ||
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| defer r.initLogger(log) | ||
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| err := r.tf.Init(ctx, opts...) | ||
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| var sl *tfexec.ErrStateLocked | ||
| if err != nil && errors.As(err, &sl) == false { | ||
| fmt.Fprint(os.Stderr, errBuf.String()) | ||
| err = errors.New(errBuf.String()) | ||
| } | ||
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| return err | ||
| } | ||
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| func (r *TerraformRunnerServer) Init(ctx context.Context, req *InitRequest) (*InitReply, error) { | ||
| log := ctrl.LoggerFrom(ctx, "instance-id", r.InstanceID).WithName(loggerName) | ||
| log.Info("initializing") | ||
| if req.TfInstance != r.InstanceID { | ||
| err := fmt.Errorf("no TF instance found") | ||
| log.Error(err, "no terraform") | ||
| return nil, err | ||
| } | ||
|
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| terraform := r.terraform | ||
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| log.Info("mapping the Spec.BackendConfigsFrom") | ||
| backendConfigsOpts := []tfexec.InitOption{} | ||
| for _, bf := range terraform.Spec.BackendConfigsFrom { | ||
| objectKey := types.NamespacedName{ | ||
| Namespace: terraform.Namespace, | ||
| Name: bf.Name, | ||
| } | ||
| if bf.Kind == "Secret" { | ||
| var s corev1.Secret | ||
| err := r.Get(ctx, objectKey, &s) | ||
| if err != nil && bf.Optional == false { | ||
| log.Error(err, "unable to get object key", "objectKey", objectKey, "secret", s.ObjectMeta.Name) | ||
| return nil, err | ||
| } | ||
| // if VarsKeys is null, use all | ||
| if bf.Keys == nil { | ||
| for key, val := range s.Data { | ||
| backendConfigsOpts = append(backendConfigsOpts, tfexec.BackendConfig(key+"="+string(val))) | ||
| } | ||
| } else { | ||
| for _, key := range bf.Keys { | ||
| backendConfigsOpts = append(backendConfigsOpts, tfexec.BackendConfig(key+"="+string(s.Data[key]))) | ||
| } | ||
| } | ||
| } else if bf.Kind == "ConfigMap" { | ||
| var cm corev1.ConfigMap | ||
| err := r.Get(ctx, objectKey, &cm) | ||
| if err != nil && bf.Optional == false { | ||
| log.Error(err, "unable to get object key", "objectKey", objectKey, "configmap", cm.ObjectMeta.Name) | ||
| return nil, err | ||
| } | ||
|
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| // if Keys is null, use all | ||
| if bf.Keys == nil { | ||
| for key, val := range cm.Data { | ||
| backendConfigsOpts = append(backendConfigsOpts, tfexec.BackendConfig(key+"="+val)) | ||
| } | ||
| for key, val := range cm.BinaryData { | ||
| backendConfigsOpts = append(backendConfigsOpts, tfexec.BackendConfig(key+"="+string(val))) | ||
| } | ||
| } else { | ||
| for _, key := range bf.Keys { | ||
| if val, ok := cm.Data[key]; ok { | ||
| backendConfigsOpts = append(backendConfigsOpts, tfexec.BackendConfig(key+"="+val)) | ||
| } | ||
| if val, ok := cm.BinaryData[key]; ok { | ||
| backendConfigsOpts = append(backendConfigsOpts, tfexec.BackendConfig(key+"="+string(val))) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| initOpts := []tfexec.InitOption{tfexec.Upgrade(req.Upgrade), tfexec.ForceCopy(req.ForceCopy)} | ||
| initOpts = append(initOpts, backendConfigsOpts...) | ||
| if err := r.tfInit(ctx, initOpts...); err != nil { | ||
| st := status.New(codes.Internal, err.Error()) | ||
| var stateErr *tfexec.ErrStateLocked | ||
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| if errors.As(err, &stateErr) { | ||
| st, err = st.WithDetails(&InitReply{Message: "not ok", StateLockIdentifier: stateErr.ID}) | ||
|
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| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
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| log.Error(err, "unable to initialize") | ||
| return nil, st.Err() | ||
| } | ||
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| return &InitReply{Message: "ok"}, nil | ||
| } |