Add warning about non retriable error during init (#644)

Signed-off-by: Daniel Weiße <dw@edgeless.systems>

cli/internal/cmd/init.go

@@ -9,6 +9,7 @@ package cmd
 import (
 	"context"
 	"encoding/hex"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -141,6 +142,11 @@ func initialize(cmd *cobra.Command, newDialer func(validator *cloudcmd.Validator
 	resp, err := initCall(cmd.Context(), newDialer(validator), idFile.IP, req)
 	spinner.Stop()
 	if err != nil {
+		var nonRetriable *nonRetriableError
+		if errors.As(err, &nonRetriable) {
+			cmd.PrintErrln("Cluster initialization failed. This error is not recoverable.")
+			cmd.PrintErrln("Terminate your cluster and try again.")
+		}
 		return err
 	}
 
@@ -181,7 +187,7 @@ func (d *initDoer) Do(ctx context.Context) error {
 	protoClient := initproto.NewAPIClient(conn)
 	resp, err := protoClient.Init(ctx, d.req)
 	if err != nil {
-		return fmt.Errorf("init call: %w", err)
+		return &nonRetriableError{fmt.Errorf("init call: %w", err)}
 	}
 	d.resp = resp
 	return nil
@@ -339,3 +345,17 @@ func getMarshaledServiceAccountURI(provider cloudprovider.Provider, config *conf
 type grpcDialer interface {
 	Dial(ctx context.Context, target string) (*grpc.ClientConn, error)
 }
+
+type nonRetriableError struct {
+	err error
+}
+
+// Error returns the error message.
+func (e *nonRetriableError) Error() string {
+	return e.err.Error()
+}
+
+// Unwrap returns the wrapped error.
+func (e *nonRetriableError) Unwrap() error {
+	return e.err
+}

cli/internal/cmd/init_test.go

@@ -65,6 +65,7 @@ func TestInitialize(t *testing.T) {
 		configMutator           func(*config.Config)
 		serviceAccKey           *gcpshared.ServiceAccountKey
 		initServerAPI           *stubInitServer
+		retriable               bool
 		masterSecretShouldExist bool
 		wantErr                 bool
 	}{
@@ -85,20 +86,31 @@ func TestInitialize(t *testing.T) {
 			idFile:        &clusterid.File{IP: "192.0.2.1"},
 			initServerAPI: &stubInitServer{initResp: testInitResp},
 		},
+		"non retriable error": {
+			provider:                cloudprovider.QEMU,
+			idFile:                  &clusterid.File{IP: "192.0.2.1"},
+			initServerAPI:           &stubInitServer{initErr: &nonRetriableError{someErr}},
+			retriable:               false,
+			masterSecretShouldExist: true,
+			wantErr:                 true,
+		},
 		"empty id file": {
 			provider:      cloudprovider.GCP,
 			idFile:        &clusterid.File{},
 			initServerAPI: &stubInitServer{},
+			retriable:     true,
 			wantErr:       true,
 		},
 		"no id file": {
 			provider:  cloudprovider.GCP,
+			retriable: true,
 			wantErr:   true,
 		},
 		"init call fails": {
 			provider:      cloudprovider.GCP,
 			idFile:        &clusterid.File{IP: "192.0.2.1"},
 			initServerAPI: &stubInitServer{initErr: someErr},
+			retriable:     true,
 			wantErr:       true,
 		},
 	}
@@ -156,6 +168,11 @@ func TestInitialize(t *testing.T) {
 
 			if tc.wantErr {
 				assert.Error(err)
+				if !tc.retriable {
+					assert.Contains(errOut.String(), "This error is not recoverable")
+				} else {
+					assert.Empty(errOut.String())
+				}
 				if !tc.masterSecretShouldExist {
 					_, err = fileHandler.Stat(constants.MasterSecretFilename)
 					assert.Error(err)