test: refactor error syntax

Update README to have full, correct examples

plugin/attributes.go

@@ -7,9 +7,23 @@ import (
 	"time"
 
 	"github.com/mitchellh/mapstructure"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/types/known/structpb"
 )
 
+func invalidArgumentError(msg string, f map[string]string) error {
+	var fieldMsgs []string
+	for field, val := range f {
+		fieldMsgs = append(fieldMsgs, fmt.Sprintf("%s: %s", field, val))
+	}
+	if len(fieldMsgs) > 0 {
+		sort.Strings(fieldMsgs)
+		msg = fmt.Sprintf("%s: [%s]", msg, strings.Join(fieldMsgs, ", "))
+	}
+	return status.Error(codes.InvalidArgument, msg)
+}
+
 // CatalogAttributes is a Go-native representation of the Attributes
 // map.
 type CatalogAttributes struct {
@@ -20,22 +34,27 @@ type CatalogAttributes struct {
 func getCatalogAttributes(in *structpb.Struct) (*CatalogAttributes, error) {
 	unknownFields := structFields(in)
 	result := new(CatalogAttributes)
+	badFields := make(map[string]string)
 
 	var err error
 	result.Region, err = getStringValue(in, constRegion, true)
 	if err != nil {
-		return nil, err
+		badFields[fmt.Sprintf("attributes.%s", constRegion)] = err.Error()
 	}
 	delete(unknownFields, constRegion)
 
 	result.DisableCredentialRotation, err = getBoolValue(in, constDisableCredentialRotation, false)
 	if err != nil {
-		return nil, err
+		badFields[fmt.Sprintf("attributes.%s", constDisableCredentialRotation)] = err.Error()
 	}
 	delete(unknownFields, constDisableCredentialRotation)
 
-	if len(unknownFields) != 0 {
+	for s := range unknownFields {
-		return nil, fmt.Errorf("unknown catalog attribute fields provided: %s", keysAsString(unknownFields))
+		badFields[fmt.Sprintf("attributes.%s", s)] = "unrecognized field"
+	}
+
+	if len(badFields) > 0 {
+		return nil, invalidArgumentError("Invalid arguments in catalog attributes", badFields)
 	}
 
 	return result, nil
@@ -50,22 +69,27 @@ type CatalogSecrets struct {
 func getCatalogSecrets(in *structpb.Struct) (*CatalogSecrets, error) {
 	unknownFields := structFields(in)
 	result := new(CatalogSecrets)
+	badFields := make(map[string]string)
 
 	var err error
 	result.AccessKeyId, err = getStringValue(in, constAccessKeyId, true)
 	if err != nil {
-		return nil, err
+		badFields[fmt.Sprintf("secrets.%s", constAccessKeyId)] = err.Error()
 	}
 	delete(unknownFields, constAccessKeyId)
 
 	result.SecretAccessKey, err = getStringValue(in, constSecretAccessKey, true)
 	if err != nil {
-		return nil, err
+		badFields[fmt.Sprintf("secrets.%s", constSecretAccessKey)] = err.Error()
 	}
 	delete(unknownFields, constSecretAccessKey)
 
-	if len(unknownFields) != 0 {
+	for s := range unknownFields {
-		return nil, fmt.Errorf("unknown catalog secret fields provided: %s", keysAsString(unknownFields))
+		badFields[fmt.Sprintf("secrets.%s", s)] = "unrecognized field"
+	}
+
+	if len(badFields) > 0 {
+		return nil, invalidArgumentError("Error in the secrets provided", badFields)
 	}
 
 	return result, nil
@@ -84,9 +108,13 @@ func getSetAttributes(in *structpb.Struct) (*SetAttributes, error) {
 	// here for now. Make this more complex if we add more attributes
 	// to host sets.
 	unknownFields := structFields(in)
+	badFields := make(map[string]string)
 	delete(unknownFields, constDescribeInstancesFilters)
-	if len(unknownFields) != 0 {
+	for a := range unknownFields {
-		return nil, fmt.Errorf("unknown set attribute fields provided: %s", keysAsString(unknownFields))
+		badFields[fmt.Sprintf("attributes.%s", a)] = "unrecognized field"
+	}
+	if len(badFields) > 0 {
+		return nil, invalidArgumentError("Error in the attributes provided", badFields)
 	}
 
 	// Mapstructure complains if it expects a slice as output and sees a scalar
@@ -101,7 +129,7 @@ func getSetAttributes(in *structpb.Struct) (*SetAttributes, error) {
 	}
 
 	if err := mapstructure.Decode(inMap, &setAttrs); err != nil {
-		return nil, fmt.Errorf("error decoding set attributes: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error decoding set attributes: %s", err)
 	}
 
 	return &setAttrs, nil

plugin/attributes_test.go

@@ -5,6 +5,8 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/types/known/structpb"
 )
 
@@ -35,7 +37,7 @@ func TestGetCatalogAttributes(t *testing.T) {
 				"foo":       true,
 				"bar":       true,
 			}),
-			expectedErrContains: "unknown catalog attribute fields provided: bar, foo",
+			expectedErrContains: "attributes.bar: Unrecognized field, attributes.foo: Unrecognized field",
 		},
 		{
 			name: "default",
@@ -68,6 +70,7 @@ func TestGetCatalogAttributes(t *testing.T) {
 			if tc.expectedErrContains != "" {
 				require.Error(err)
 				require.Contains(err.Error(), tc.expectedErrContains)
+				require.Equal(status.Code(err), codes.InvalidArgument)
 				return
 			}
 
@@ -104,7 +107,7 @@ func TestGetCatalogSecrets(t *testing.T) {
 				"foo":                true,
 				"bar":                true,
 			}),
-			expectedErrContains: "unknown catalog secret fields provided: bar, foo",
+			expectedErrContains: "secrets.bar: Unrecognized field, secrets.foo: Unrecognized field",
 		},
 		{
 			name: "good",
@@ -127,6 +130,7 @@ func TestGetCatalogSecrets(t *testing.T) {
 			if tc.expectedErrContains != "" {
 				require.Error(err)
 				require.Contains(err.Error(), tc.expectedErrContains)
+				require.Equal(status.Code(err), codes.InvalidArgument)
 				return
 			}
 
@@ -170,7 +174,7 @@ func TestGetSetAttributes(t *testing.T) {
 				"foo": true,
 				"bar": true,
 			}),
-			expectedErrContains: "unknown set attribute fields provided: bar, foo",
+			expectedErrContains: "attributes.bar: Unrecognized field, attributes.foo: Unrecognized field",
 		},
 		{
 			name: "good",
@@ -194,6 +198,7 @@ func TestGetSetAttributes(t *testing.T) {
 			if tc.expectedErrContains != "" {
 				require.Error(err)
 				require.Contains(err.Error(), tc.expectedErrContains)
+				require.Equal(status.Code(err), codes.InvalidArgument)
 				return
 			}
 
@@ -413,7 +418,8 @@ func TestValidateRegion(t *testing.T) {
 			require := require.New(t)
 			err := validateRegion(tc.in)
 			if tc.expectedErr != "" {
-				require.EqualError(err, tc.expectedErr)
+				require.Contains(err.Error(), tc.expectedErr)
+				require.Equal(status.Code(err), codes.InvalidArgument)
 				return
 			}
 

plugin/plugin.go

@@ -12,6 +12,8 @@ import (
 	"github.com/aws/aws-sdk-go/aws/endpoints"
 	"github.com/aws/aws-sdk-go/service/ec2"
 	pb "github.com/hashicorp/boundary/sdk/pbs/plugin"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 )
 
 // rotationWaitTimeout controls the time we wait for credential rotation to
@@ -36,17 +38,17 @@ var (
 func (p *AwsPlugin) OnCreateCatalog(ctx context.Context, req *pb.OnCreateCatalogRequest) (*pb.OnCreateCatalogResponse, error) {
 	catalog := req.GetCatalog()
 	if catalog == nil {
-		return nil, errors.New("catalog is nil")
+		return nil, status.Error(codes.InvalidArgument, "catalog is nil")
 	}
 
 	secrets := catalog.GetSecrets()
 	if secrets == nil {
-		return nil, errors.New("secrets are required")
+		return nil, status.Error(codes.InvalidArgument, "secrets are required")
 	}
 
 	attrs := catalog.GetAttributes()
 	if attrs == nil {
-		return nil, errors.New("attributes are required")
+		return nil, status.Error(codes.InvalidArgument, "attributes are required")
 	}
 
 	catalogAttributes, err := getCatalogAttributes(attrs)
@@ -68,24 +70,24 @@ func (p *AwsPlugin) OnCreateCatalog(ctx context.Context, req *pb.OnCreateCatalog
 		withSecretAccessKey(catalogSecrets.SecretAccessKey),
 	}, p.testStateOpts...)...)
 	if err != nil {
-		return nil, fmt.Errorf("error setting up persisted state: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error setting up persisted state: %s", err)
 	}
 
 	// Try to rotate the credentials if we're not skipping them.
 	if !catalogAttributes.DisableCredentialRotation {
 		if err := state.RotateCreds(); err != nil {
-			return nil, fmt.Errorf("error during credential rotation: %w", err)
+			return nil, status.Errorf(codes.InvalidArgument, "error during credential rotation: %s", err)
 		}
 	} else {
 		// Simply validate if we aren't rotating.
 		if err := state.ValidateCreds(); err != nil {
-			return nil, fmt.Errorf("error during credential validation: %w", err)
+			return nil, status.Errorf(codes.InvalidArgument, "error during credential validation: %s", err)
 		}
 	}
 
 	persistedProto, err := state.ToProto()
 	if err != nil {
-		return nil, err
+		return nil, status.Error(codes.InvalidArgument, err.Error())
 	}
 
 	return &pb.OnCreateCatalogResponse{
@@ -99,7 +101,7 @@ func (p *AwsPlugin) OnUpdateCatalog(ctx context.Context, req *pb.OnUpdateCatalog
 	// fetching the new copy to keep things a little less messy.
 	catalog := req.GetNewCatalog()
 	if catalog == nil {
-		return nil, errors.New("new catalog is nil")
+		return nil, status.Error(codes.InvalidArgument, "new catalog is nil")
 	}
 
 	var updateSecrets bool
@@ -112,7 +114,7 @@ func (p *AwsPlugin) OnUpdateCatalog(ctx context.Context, req *pb.OnUpdateCatalog
 
 	attrs := catalog.GetAttributes()
 	if attrs == nil {
-		return nil, errors.New("new catalog missing attributes")
+		return nil, status.Error(codes.InvalidArgument, "new catalog missing attributes")
 	}
 
 	catalogAttributes, err := getCatalogAttributes(attrs)
@@ -134,7 +136,7 @@ func (p *AwsPlugin) OnUpdateCatalog(ctx context.Context, req *pb.OnUpdateCatalog
 	// is fine and important, but this may change in the future.
 	state, err := awsCatalogPersistedStateFromProto(req.GetPersisted(), p.testStateOpts...)
 	if err != nil {
-		return nil, fmt.Errorf("error loading persisted state: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error loading persisted state: %s", err)
 	}
 
 	if catalogAttributes.DisableCredentialRotation && !updateSecrets {
@@ -142,7 +144,7 @@ func (p *AwsPlugin) OnUpdateCatalog(ctx context.Context, req *pb.OnUpdateCatalog
 		// rotation for credentials currently being managed by rotation.
 		// This is not allowed.
 		if !state.CredsLastRotatedTime.IsZero() {
-			return nil, errors.New("cannot disable rotation for already-rotated credentials")
+			return nil, status.Error(codes.FailedPrecondition, "cannot disable rotation for already-rotated credentials")
 		}
 	}
 
@@ -156,7 +158,7 @@ func (p *AwsPlugin) OnUpdateCatalog(ctx context.Context, req *pb.OnUpdateCatalog
 		// rotation time as well and deletes the credentials if we are
 		// managing them (ie: if we've rotated them before).
 		if err := state.ReplaceCreds(catalogSecrets.AccessKeyId, catalogSecrets.SecretAccessKey); err != nil {
-			return nil, fmt.Errorf("error attempting to replace credentials: %w", err)
+			return nil, status.Errorf(codes.InvalidArgument, "error attempting to replace credentials: %s", err)
 		}
 	}
 
@@ -164,14 +166,14 @@ func (p *AwsPlugin) OnUpdateCatalog(ctx context.Context, req *pb.OnUpdateCatalog
 		// If we're enabling rotation now but didn't before, or have
 		// freshly replaced credentials, we can rotate here.
 		if err := state.RotateCreds(); err != nil {
-			return nil, fmt.Errorf("error during credential rotation: %w", err)
+			return nil, status.Errorf(codes.InvalidArgument, "error during credential rotation: %s", err)
 		}
 	}
 
 	// That's it!
 	persistedProto, err := state.ToProto()
 	if err != nil {
-		return nil, err
+		return nil, status.Error(codes.InvalidArgument, err.Error())
 	}
 
 	return &pb.OnUpdateCatalogResponse{
@@ -188,7 +190,7 @@ func (p *AwsPlugin) OnDeleteCatalog(ctx context.Context, req *pb.OnDeleteCatalog
 	// may be corrupt/and or legitimately missing.
 	state, err := awsCatalogPersistedStateFromProto(req.GetPersisted(), p.testStateOpts...)
 	if err != nil {
-		return nil, fmt.Errorf("error loading persisted state: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error loading persisted state: %s", err)
 	}
 
 	if !state.CredsLastRotatedTime.IsZero() {
@@ -196,7 +198,7 @@ func (p *AwsPlugin) OnDeleteCatalog(ctx context.Context, req *pb.OnDeleteCatalog
 		// credentials to ensure that it has the proper permissions to do
 		// it.
 		if err := state.DeleteCreds(); err != nil {
-			return nil, fmt.Errorf("error removing rotated credentials during catalog deletion: %w", err)
+			return nil, status.Errorf(codes.Aborted, "error removing rotated credentials during catalog deletion: %s", err)
 		}
 	}
 
@@ -206,54 +208,54 @@ func (p *AwsPlugin) OnDeleteCatalog(ctx context.Context, req *pb.OnDeleteCatalog
 func (p *AwsPlugin) OnCreateSet(ctx context.Context, req *pb.OnCreateSetRequest) (*pb.OnCreateSetResponse, error) {
 	catalog := req.GetCatalog()
 	if catalog == nil {
-		return nil, errors.New("catalog is nil")
+		return nil, status.Error(codes.InvalidArgument, "catalog is nil")
 	}
 
 	catalogAttrsRaw := catalog.GetAttributes()
 	if catalogAttrsRaw == nil {
-		return nil, errors.New("catalog missing attributes")
+		return nil, status.Error(codes.InvalidArgument, "catalog missing attributes")
 	}
 
 	catalogAttributes, err := getCatalogAttributes(catalogAttrsRaw)
 	if err != nil {
-		return nil, fmt.Errorf("integrity error in host catalog attributes: %w", err)
+		return nil, err
 	}
 
 	if err := validateRegion(catalogAttributes.Region); err != nil {
-		return nil, fmt.Errorf("integrity error in host catalog attributes: %w", err)
+		return nil, err
 	}
 
 	state, err := awsCatalogPersistedStateFromProto(req.GetPersisted(), p.testStateOpts...)
 	if err != nil {
-		return nil, fmt.Errorf("error loading persisted state: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error loading persisted state: %s", err)
 	}
 
 	set := req.GetSet()
 	if set == nil {
-		return nil, errors.New("set is nil")
+		return nil, status.Error(codes.InvalidArgument, "set is nil")
 	}
 
 	if set.GetAttributes() == nil {
-		return nil, errors.New("set missing attributes")
+		return nil, status.Error(codes.InvalidArgument, "set missing attributes")
 	}
 	setAttrs, err := getSetAttributes(set.GetAttributes())
 	if err != nil {
-		return nil, fmt.Errorf("error parsing set attributes: %w", err)
+		return nil, err
 	}
 
 	ec2Client, err := state.EC2Client(catalogAttributes.Region)
 	if err != nil {
-		return nil, fmt.Errorf("error getting EC2 client: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error getting EC2 client: %s", err)
 	}
 
 	input, err := buildDescribeInstancesInput(setAttrs, true)
 	if err != nil {
-		return nil, fmt.Errorf("error building DescribeInstances parameters: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error building DescribeInstances parameters: %s", err)
 	}
 
 	_, err = ec2Client.DescribeInstances(input)
 	if err == nil {
-		return nil, errors.New("query error: DescribeInstances DryRun should have returned error, but none was found")
+		return nil, status.Error(codes.FailedPrecondition, "query error: DescribeInstances DryRun should have returned error, but none was found")
 	}
 
 	if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "DryRunOperation" {
@@ -261,62 +263,62 @@ func (p *AwsPlugin) OnCreateSet(ctx context.Context, req *pb.OnCreateSetRequest)
 		return &pb.OnCreateSetResponse{}, nil
 	}
 
-	return nil, fmt.Errorf("error performing dry run of DescribeInstances: %w", err)
+	return nil, status.Errorf(codes.InvalidArgument, "error performing dry run of DescribeInstances: %s", err)
 }
 
 func (p *AwsPlugin) OnUpdateSet(ctx context.Context, req *pb.OnUpdateSetRequest) (*pb.OnUpdateSetResponse, error) {
 	catalog := req.GetCatalog()
 	if catalog == nil {
-		return nil, errors.New("catalog is nil")
+		return nil, status.Error(codes.InvalidArgument, "catalog is nil")
 	}
 
 	catalogAttrsRaw := catalog.GetAttributes()
 	if catalogAttrsRaw == nil {
-		return nil, errors.New("catalog missing attributes")
+		return nil, status.Error(codes.InvalidArgument, "catalog missing attributes")
 	}
 
 	catalogAttributes, err := getCatalogAttributes(catalogAttrsRaw)
 	if err != nil {
-		return nil, fmt.Errorf("integrity error in host catalog attributes: %w", err)
+		return nil, err
 	}
 
 	if err := validateRegion(catalogAttributes.Region); err != nil {
-		return nil, fmt.Errorf("integrity error in host catalog attributes: %w", err)
+		return nil, err
 	}
 
 	state, err := awsCatalogPersistedStateFromProto(req.GetPersisted(), p.testStateOpts...)
 	if err != nil {
-		return nil, fmt.Errorf("error loading persisted state: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error loading persisted state: %s", err)
 	}
 
 	// As with catalog, we don't need to really look at the old host
 	// set here, just need to work off of/validate the new set config
 	set := req.GetNewSet()
 	if set == nil {
-		return nil, errors.New("new set is nil")
+		return nil, status.Error(codes.InvalidArgument, "new set is nil")
 	}
 
 	if set.GetAttributes() == nil {
-		return nil, errors.New("new set missing attributes")
+		return nil, status.Error(codes.InvalidArgument, "new set missing attributes")
 	}
 	setAttrs, err := getSetAttributes(set.GetAttributes())
 	if err != nil {
-		return nil, fmt.Errorf("error parsing set attributes: %w", err)
+		return nil, err
 	}
 
 	ec2Client, err := state.EC2Client(catalogAttributes.Region)
 	if err != nil {
-		return nil, fmt.Errorf("error getting EC2 client: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error getting EC2 client: %s", err)
 	}
 
 	input, err := buildDescribeInstancesInput(setAttrs, true)
 	if err != nil {
-		return nil, fmt.Errorf("error building DescribeInstances parameters: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error building DescribeInstances parameters: %s", err)
 	}
 
 	_, err = ec2Client.DescribeInstances(input)
 	if err == nil {
-		return nil, errors.New("query error: DescribeInstances DryRun should have returned error, but none was found")
+		return nil, status.Error(codes.FailedPrecondition, "query error: DescribeInstances DryRun should have returned error, but none was found")
 	}
 
 	if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "DryRunOperation" {
@@ -324,7 +326,7 @@ func (p *AwsPlugin) OnUpdateSet(ctx context.Context, req *pb.OnUpdateSetRequest)
 		return &pb.OnUpdateSetResponse{}, nil
 	}
 
-	return nil, fmt.Errorf("error performing dry run of DescribeInstances: %w", err)
+	return nil, status.Errorf(codes.InvalidArgument, "error performing dry run of DescribeInstances: %s", err)
 }
 
 func (p *AwsPlugin) OnDeleteSet(ctx context.Context, req *pb.OnDeleteSetRequest) (*pb.OnDeleteSetResponse, error) {
@@ -336,31 +338,31 @@ func (p *AwsPlugin) OnDeleteSet(ctx context.Context, req *pb.OnDeleteSetRequest)
 func (p *AwsPlugin) ListHosts(ctx context.Context, req *pb.ListHostsRequest) (*pb.ListHostsResponse, error) {
 	catalog := req.GetCatalog()
 	if catalog == nil {
-		return nil, errors.New("catalog is nil")
+		return nil, status.Error(codes.InvalidArgument, "catalog is nil")
 	}
 
 	catalogAttrsRaw := catalog.GetAttributes()
 	if catalogAttrsRaw == nil {
-		return nil, errors.New("catalog missing attributes")
+		return nil, status.Error(codes.InvalidArgument, "catalog missing attributes")
 	}
 
 	catalogAttributes, err := getCatalogAttributes(catalogAttrsRaw)
 	if err != nil {
-		return nil, fmt.Errorf("integrity error in host catalog attributes: %w", err)
+		return nil, err
 	}
 
 	if err := validateRegion(catalogAttributes.Region); err != nil {
-		return nil, fmt.Errorf("integrity error in host catalog attributes: %w", err)
+		return nil, err
 	}
 
 	state, err := awsCatalogPersistedStateFromProto(req.GetPersisted(), p.testStateOpts...)
 	if err != nil {
-		return nil, fmt.Errorf("error loading persisted state: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error loading persisted state: %s", err)
 	}
 
 	sets := req.GetSets()
 	if sets == nil {
-		return nil, errors.New("sets is nil")
+		return nil, status.Error(codes.InvalidArgument, "sets is nil")
 	}
 
 	// Build all the queries in advance.
@@ -375,20 +377,20 @@ func (p *AwsPlugin) ListHosts(ctx context.Context, req *pb.ListHostsRequest) (*p
 	for i, set := range sets {
 		// Validate Id since we use it in output
 		if set.GetId() == "" {
-			return nil, errors.New("set missing id")
+			return nil, status.Error(codes.InvalidArgument, "set missing id")
 		}
 
 		if set.GetAttributes() == nil {
-			return nil, errors.New("set missing attributes")
+			return nil, status.Error(codes.InvalidArgument, "set missing attributes")
 		}
 		setAttrs, err := getSetAttributes(set.GetAttributes())
 		if err != nil {
-			return nil, fmt.Errorf("error parsing set attributes: %w", err)
+			return nil, err
 		}
 
 		input, err := buildDescribeInstancesInput(setAttrs, false)
 		if err != nil {
-			return nil, fmt.Errorf("error building DescribeInstances parameters for host set id %q: %w", set.GetId(), err)
+			return nil, status.Errorf(codes.InvalidArgument, "error building DescribeInstances parameters for host set id %q: %s", set.GetId(), err)
 		}
 		queries[i] = hostSetQuery{
 			Id:    set.GetId(),
@@ -398,7 +400,7 @@ func (p *AwsPlugin) ListHosts(ctx context.Context, req *pb.ListHostsRequest) (*p
 
 	ec2Client, err := state.EC2Client(catalogAttributes.Region)
 	if err != nil {
-		return nil, fmt.Errorf("error getting EC2 client: %w", err)
+		return nil, status.Errorf(codes.InvalidArgument, "error getting EC2 client: %s", err)
 	}
 
 	// Run all queries now and assemble output.
@@ -406,7 +408,7 @@ func (p *AwsPlugin) ListHosts(ctx context.Context, req *pb.ListHostsRequest) (*p
 	for i, query := range queries {
 		output, err := ec2Client.DescribeInstances(query.Input)
 		if err != nil {
-			return nil, fmt.Errorf("error running DescribeInstances for host set id %q: %w", query.Id, err)
+			return nil, status.Errorf(codes.InvalidArgument, "error running DescribeInstances for host set id %q: %s", query.Id, err)
 		}
 
 		queries[i].Output = output
@@ -417,7 +419,7 @@ func (p *AwsPlugin) ListHosts(ctx context.Context, req *pb.ListHostsRequest) (*p
 			for _, instance := range reservation.Instances {
 				host, err := awsInstanceToHost(instance)
 				if err != nil {
-					return nil, fmt.Errorf("error processing host results for host set id %q: %w", query.Id, err)
+					return nil, status.Errorf(codes.InvalidArgument, "error processing host results for host set id %q: %s", query.Id, err)
 				}
 
 				queries[i].OutputHosts = append(queries[i].OutputHosts, host)
@@ -461,7 +463,7 @@ func (p *AwsPlugin) ListHosts(ctx context.Context, req *pb.ListHostsRequest) (*p
 func validateRegion(region string) error {
 	_, found := endpoints.PartitionForRegion(endpoints.DefaultPartitions(), region)
 	if !found {
-		return fmt.Errorf("not a valid region: %s", region)
+		return status.Errorf(codes.InvalidArgument, "not a valid region: %s", region)
 	}
 
 	return nil

plugin/plugin_test.go

@@ -14,6 +14,8 @@ import (
 	pb "github.com/hashicorp/boundary/sdk/pbs/plugin"
 	"github.com/hashicorp/go-secure-stdlib/awsutil"
 	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/types/known/structpb"
 )
 
@@ -22,19 +24,22 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 		name                string
 		req                 *pb.OnCreateCatalogRequest
 		opts                []awsCatalogPersistedStateOption
-		expectedErr string
+		expectedErrContains string
+		expectedErrCode     codes.Code
 	}{
 		{
 			name:                "nil catalog",
 			req:                 &pb.OnCreateCatalogRequest{},
-			expectedErr: "catalog is nil",
+			expectedErrContains: "catalog is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil secrets",
 			req: &pb.OnCreateCatalogRequest{
 				Catalog: &hostcatalogs.HostCatalog{},
 			},
-			expectedErr: "secrets are required",
+			expectedErrContains: "secrets are required",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil attributes",
@@ -43,7 +48,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					Secrets: new(structpb.Struct),
 				},
 			},
-			expectedErr: "attributes are required",
+			expectedErrContains: "attributes are required",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "error reading attributes",
@@ -53,7 +59,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					Attributes: new(structpb.Struct),
 				},
 			},
-			expectedErr: "missing required value \"region\"",
+			expectedErrContains: "missing required value \"region\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "error reading secrets",
@@ -65,7 +72,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "missing required value \"access_key_id\"",
+			expectedErrContains: "missing required value \"access_key_id\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "invalid region",
@@ -80,7 +88,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "not a valid region: foobar",
+			expectedErrContains: "not a valid region: foobar",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "persisted state setup error",
@@ -100,7 +109,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					return errors.New(testOptionErr)
 				},
 			},
-			expectedErr: fmt.Sprintf("error setting up persisted state: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error setting up persisted state: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "rotation error",
@@ -124,7 +134,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error during credential rotation: error rotating credentials: error calling CreateAccessKey: error calling aws.GetUser: %s", testGetUserErr),
+			expectedErrContains: fmt.Sprintf("error during credential rotation: error rotating credentials: error calling CreateAccessKey: error calling aws.GetUser: %s", testGetUserErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "validation error",
@@ -149,7 +160,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 					),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error during credential validation: error validating credentials: %s", testGetCallerIdentityErr),
+			expectedErrContains: fmt.Sprintf("error during credential validation: error validating credentials: %s", testGetCallerIdentityErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 	}
 
@@ -161,7 +173,8 @@ func TestPluginOnCreateCatalogErr(t *testing.T) {
 				testStateOpts: tc.opts,
 			}
 			_, err := p.OnCreateCatalog(context.Background(), tc.req)
-			require.EqualError(err, tc.expectedErr)
+			require.Contains(err.Error(), tc.expectedErrContains)
+			require.Equal(status.Code(err).String(), tc.expectedErrCode.String())
 		})
 	}
 }
@@ -171,12 +184,14 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 		name                string
 		req                 *pb.OnUpdateCatalogRequest
 		opts                []awsCatalogPersistedStateOption
-		expectedErr string
+		expectedErrContains string
+		expectedErrCode     codes.Code
 	}{
 		{
 			name:                "nil new catalog",
 			req:                 &pb.OnUpdateCatalogRequest{},
-			expectedErr: "new catalog is nil",
+			expectedErrContains: "new catalog is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil new attributes",
@@ -185,7 +200,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					Secrets: new(structpb.Struct),
 				},
 			},
-			expectedErr: "new catalog missing attributes",
+			expectedErrContains: "new catalog missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "error reading attributes",
@@ -195,7 +211,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					Attributes: new(structpb.Struct),
 				},
 			},
-			expectedErr: "missing required value \"region\"",
+			expectedErrContains: "missing required value \"region\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "invalid region",
@@ -206,7 +223,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "not a valid region: foobar",
+			expectedErrContains: "not a valid region: foobar",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "persisted state setup error",
@@ -229,7 +247,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					return errors.New(testOptionErr)
 				},
 			},
-			expectedErr: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "cannot disable rotation for already rotated credentials",
@@ -248,7 +267,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "cannot disable rotation for already-rotated credentials",
+			expectedErrContains: "cannot disable rotation for already-rotated credentials",
+			expectedErrCode:     codes.FailedPrecondition,
 		},
 		{
 			name: "error reading secrets",
@@ -267,7 +287,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "missing required value \"access_key_id\"",
+			expectedErrContains: "missing required value \"access_key_id\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "updating secrets, replace error",
@@ -299,7 +320,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error attempting to replace credentials: error deleting old access key: %s", testDeleteAccessKeyErr),
+			expectedErrContains: fmt.Sprintf("error attempting to replace credentials: error deleting old access key: %s", testDeleteAccessKeyErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "rotation error",
@@ -325,7 +347,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 					),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error during credential rotation: error rotating credentials: error calling CreateAccessKey: error calling aws.GetUser: %s", testGetUserErr),
+			expectedErrContains: fmt.Sprintf("error during credential rotation: error rotating credentials: error calling CreateAccessKey: error calling aws.GetUser: %s", testGetUserErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 	}
 
@@ -337,7 +360,8 @@ func TestPluginOnUpdateCatalogErr(t *testing.T) {
 				testStateOpts: tc.opts,
 			}
 			_, err := p.OnUpdateCatalog(context.Background(), tc.req)
-			require.EqualError(err, tc.expectedErr)
+			require.Contains(err.Error(), tc.expectedErrContains)
+			require.Equal(status.Code(err).String(), tc.expectedErrCode.String())
 		})
 	}
 }
@@ -347,7 +371,8 @@ func TestPluginOnDeleteCatalogErr(t *testing.T) {
 		name                string
 		req                 *pb.OnDeleteCatalogRequest
 		opts                []awsCatalogPersistedStateOption
-		expectedErr string
+		expectedErrContains string
+		expectedErrCode     codes.Code
 	}{
 		{
 			name: "persisted state setup error",
@@ -370,7 +395,8 @@ func TestPluginOnDeleteCatalogErr(t *testing.T) {
 					return errors.New(testOptionErr)
 				},
 			},
-			expectedErr: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "delete error",
@@ -397,7 +423,8 @@ func TestPluginOnDeleteCatalogErr(t *testing.T) {
 					),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error removing rotated credentials during catalog deletion: error deleting old access key: %s", testDeleteAccessKeyErr),
+			expectedErrContains: fmt.Sprintf("error removing rotated credentials during catalog deletion: error deleting old access key: %s", testDeleteAccessKeyErr),
+			expectedErrCode:     codes.Aborted,
 		},
 	}
 
@@ -409,7 +436,8 @@ func TestPluginOnDeleteCatalogErr(t *testing.T) {
 				testStateOpts: tc.opts,
 			}
 			_, err := p.OnDeleteCatalog(context.Background(), tc.req)
-			require.EqualError(err, tc.expectedErr)
+			require.Contains(err.Error(), tc.expectedErrContains)
+			require.Equal(status.Code(err).String(), tc.expectedErrCode.String())
 		})
 	}
 }
@@ -419,12 +447,14 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 		name                string
 		req                 *pb.OnCreateSetRequest
 		opts                []awsCatalogPersistedStateOption
-		expectedErr string
+		expectedErrContains string
+		expectedErrCode     codes.Code
 	}{
 		{
 			name:                "nil catalog",
 			req:                 &pb.OnCreateSetRequest{},
-			expectedErr: "catalog is nil",
+			expectedErrContains: "catalog is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil catalog attributes",
@@ -433,7 +463,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					Secrets: new(structpb.Struct),
 				},
 			},
-			expectedErr: "catalog missing attributes",
+			expectedErrContains: "catalog missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "error reading catalog attributes",
@@ -443,7 +474,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					Attributes: new(structpb.Struct),
 				},
 			},
-			expectedErr: "integrity error in host catalog attributes: missing required value \"region\"",
+			expectedErrContains: "missing required value \"region\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "invalid region",
@@ -454,7 +486,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "integrity error in host catalog attributes: not a valid region: foobar",
+			expectedErrContains: "not a valid region: foobar",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "persisted state setup error",
@@ -477,7 +510,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					return errors.New(testOptionErr)
 				},
 			},
-			expectedErr: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil set",
@@ -495,7 +529,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "set is nil",
+			expectedErrContains: "set is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil attributes in set",
@@ -514,7 +549,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 				},
 				Set: &hostsets.HostSet{},
 			},
-			expectedErr: "set missing attributes",
+			expectedErrContains: "set missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "set attribute load error",
@@ -538,7 +574,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "error parsing set attributes: unknown set attribute fields provided: bar, foo",
+			expectedErrContains: "attributes.bar: Unrecognized field, attributes.foo: Unrecognized field",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "client load error",
@@ -566,7 +603,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					awsutil.MockOptionErr(errors.New(testOptionErr)),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error getting EC2 client: error getting AWS session: error reading options in NewCredentialsConfig: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error getting EC2 client: error getting AWS session: error reading options in NewCredentialsConfig: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "DescribeInstances error",
@@ -595,7 +633,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					testMockEC2WithDescribeInstancesError(errors.New(testDescribeInstancesError)),
 				)),
 			},
-			expectedErr: fmt.Sprintf("error performing dry run of DescribeInstances: %s", testDescribeInstancesError),
+			expectedErrContains: fmt.Sprintf("error performing dry run of DescribeInstances: %s", testDescribeInstancesError),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "DescribeInstances non-error array filter",
@@ -623,7 +662,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					nil,
 				)),
 			},
-			expectedErr: "query error: DescribeInstances DryRun should have returned error, but none was found",
+			expectedErrContains: "query error: DescribeInstances DryRun should have returned error, but none was found",
+			expectedErrCode:     codes.FailedPrecondition,
 		},
 		{
 			name: "DescribeInstances non-error string filter",
@@ -651,7 +691,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 					nil,
 				)),
 			},
-			expectedErr: "query error: DescribeInstances DryRun should have returned error, but none was found",
+			expectedErrContains: "query error: DescribeInstances DryRun should have returned error, but none was found",
+			expectedErrCode:     codes.FailedPrecondition,
 		},
 	}
 
@@ -663,7 +704,8 @@ func TestPluginOnCreateSetErr(t *testing.T) {
 				testStateOpts: tc.opts,
 			}
 			_, err := p.OnCreateSet(context.Background(), tc.req)
-			require.EqualError(err, tc.expectedErr)
+			require.Contains(err.Error(), tc.expectedErrContains)
+			require.Equal(status.Code(err).String(), tc.expectedErrCode.String())
 		})
 	}
 }
@@ -673,12 +715,14 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 		name                string
 		req                 *pb.OnUpdateSetRequest
 		opts                []awsCatalogPersistedStateOption
-		expectedErr string
+		expectedErrContains string
+		expectedErrCode     codes.Code
 	}{
 		{
 			name:                "nil catalog",
 			req:                 &pb.OnUpdateSetRequest{},
-			expectedErr: "catalog is nil",
+			expectedErrContains: "catalog is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil catalog attributes",
@@ -687,7 +731,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					Secrets: new(structpb.Struct),
 				},
 			},
-			expectedErr: "catalog missing attributes",
+			expectedErrContains: "catalog missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "catalog attribute load error",
@@ -697,7 +742,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					Attributes: new(structpb.Struct),
 				},
 			},
-			expectedErr: "integrity error in host catalog attributes: missing required value \"region\"",
+			expectedErrContains: "missing required value \"region\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "invalid region",
@@ -709,7 +755,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "integrity error in host catalog attributes: not a valid region: foobar",
+			expectedErrContains: "not a valid region: foobar",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "persisted state setup error",
@@ -732,7 +779,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					return errors.New(testOptionErr)
 				},
 			},
-			expectedErr: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil set",
@@ -750,7 +798,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "new set is nil",
+			expectedErrContains: "new set is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil attributes in set",
@@ -769,7 +818,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 				},
 				NewSet: &hostsets.HostSet{},
 			},
-			expectedErr: "new set missing attributes",
+			expectedErrContains: "new set missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "set attribute load error",
@@ -793,7 +843,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "error parsing set attributes: unknown set attribute fields provided: bar, foo",
+			expectedErrContains: "attributes.bar: Unrecognized field, attributes.foo: Unrecognized field",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "client load error",
@@ -821,7 +872,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					awsutil.MockOptionErr(errors.New(testOptionErr)),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error getting EC2 client: error getting AWS session: error reading options in NewCredentialsConfig: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error getting EC2 client: error getting AWS session: error reading options in NewCredentialsConfig: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "DescribeInstances error",
@@ -850,7 +902,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					testMockEC2WithDescribeInstancesError(errors.New(testDescribeInstancesError)),
 				)),
 			},
-			expectedErr: fmt.Sprintf("error performing dry run of DescribeInstances: %s", testDescribeInstancesError),
+			expectedErrContains: fmt.Sprintf("error performing dry run of DescribeInstances: %s", testDescribeInstancesError),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "DescribeInstances non-error",
@@ -878,7 +931,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 					nil,
 				)),
 			},
-			expectedErr: "query error: DescribeInstances DryRun should have returned error, but none was found",
+			expectedErrContains: "query error: DescribeInstances DryRun should have returned error, but none was found",
+			expectedErrCode:     codes.FailedPrecondition,
 		},
 	}
 
@@ -890,7 +944,8 @@ func TestPluginOnUpdateSetErr(t *testing.T) {
 				testStateOpts: tc.opts,
 			}
 			_, err := p.OnUpdateSet(context.Background(), tc.req)
-			require.EqualError(err, tc.expectedErr)
+			require.Contains(err.Error(), tc.expectedErrContains)
+			require.Equal(status.Code(err).String(), tc.expectedErrCode.String())
 		})
 	}
 }
@@ -900,12 +955,14 @@ func TestPluginListHostsErr(t *testing.T) {
 		name                string
 		req                 *pb.ListHostsRequest
 		opts                []awsCatalogPersistedStateOption
-		expectedErr string
+		expectedErrContains string
+		expectedErrCode     codes.Code
 	}{
 		{
 			name:                "nil catalog",
 			req:                 &pb.ListHostsRequest{},
-			expectedErr: "catalog is nil",
+			expectedErrContains: "catalog is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil catalog attributes",
@@ -914,7 +971,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					Secrets: new(structpb.Struct),
 				},
 			},
-			expectedErr: "catalog missing attributes",
+			expectedErrContains: "catalog missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "error reading catalog attributes",
@@ -924,7 +982,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					Attributes: new(structpb.Struct),
 				},
 			},
-			expectedErr: "integrity error in host catalog attributes: missing required value \"region\"",
+			expectedErrContains: "attributes.region: missing required value \"region\"",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "invalid region",
@@ -936,7 +995,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "integrity error in host catalog attributes: not a valid region: foobar",
+			expectedErrContains: "not a valid region: ",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "persisted state setup error",
@@ -959,7 +1019,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					return errors.New(testOptionErr)
 				},
 			},
-			expectedErr: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error loading persisted state: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "nil sets",
@@ -977,7 +1038,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					}),
 				},
 			},
-			expectedErr: "sets is nil",
+			expectedErrContains: "sets is nil",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "set missing id",
@@ -996,7 +1058,8 @@ func TestPluginListHostsErr(t *testing.T) {
 				},
 				Sets: []*hostsets.HostSet{&hostsets.HostSet{}},
 			},
-			expectedErr: "set missing id",
+			expectedErrContains: "set missing id",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "set missing attributes",
@@ -1019,7 +1082,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					},
 				},
 			},
-			expectedErr: "set missing attributes",
+			expectedErrContains: "set missing attributes",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "set attribute load error",
@@ -1046,7 +1110,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					},
 				},
 			},
-			expectedErr: "error parsing set attributes: unknown set attribute fields provided: bar, foo",
+			expectedErrContains: "attributes.bar: Unrecognized field, attributes.foo: Unrecognized field",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "client load error",
@@ -1077,7 +1142,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					awsutil.MockOptionErr(errors.New(testOptionErr)),
 				}),
 			},
-			expectedErr: fmt.Sprintf("error getting EC2 client: error getting AWS session: error reading options in NewCredentialsConfig: %s", testOptionErr),
+			expectedErrContains: fmt.Sprintf("error getting EC2 client: error getting AWS session: error reading options in NewCredentialsConfig: %s", testOptionErr),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "DescribeInstances error",
@@ -1109,7 +1175,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					testMockEC2WithDescribeInstancesError(errors.New(testDescribeInstancesError)),
 				)),
 			},
-			expectedErr: fmt.Sprintf("error running DescribeInstances for host set id \"foobar\": %s", testDescribeInstancesError),
+			expectedErrContains: fmt.Sprintf("error running DescribeInstances for host set id \"foobar\": %s", testDescribeInstancesError),
+			expectedErrCode:     codes.InvalidArgument,
 		},
 		{
 			name: "awsInstanceToHost error",
@@ -1153,7 +1220,8 @@ func TestPluginListHostsErr(t *testing.T) {
 					),
 				)),
 			},
-			expectedErr: "error processing host results for host set id \"foobar\": response integrity error: missing instance id",
+			expectedErrContains: "error processing host results for host set id \"foobar\": response integrity error: missing instance id",
+			expectedErrCode:     codes.InvalidArgument,
 		},
 	}
 
@@ -1165,7 +1233,8 @@ func TestPluginListHostsErr(t *testing.T) {
 				testStateOpts: tc.opts,
 			}
 			_, err := p.ListHosts(context.Background(), tc.req)
-			require.EqualError(err, tc.expectedErr)
+			require.Contains(err.Error(), tc.expectedErrContains)
+			require.Equal(status.Code(err).String(), tc.expectedErrCode.String())
 		})
 	}
 }