drone/gitrpc/internal/middleware/error.go

77 lines
2.3 KiB
Go

// Copyright 2022 Harness Inc. All rights reserved.
// Use of this source code is governed by the Polyform Free Trial License
// that can be found in the LICENSE.md file for this repository.
package middleware
import (
"context"
"errors"
"reflect"
"github.com/harness/gitness/gitrpc/internal/types"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
type ErrInterceptor struct {
}
func NewErrInterceptor() *ErrInterceptor {
return &ErrInterceptor{}
}
func (i *ErrInterceptor) UnaryInterceptor() grpc.UnaryServerInterceptor {
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler) (interface{}, error) {
value, err := handler(ctx, req)
if (value == nil || reflect.ValueOf(value).IsNil()) && err == nil {
return nil, status.Error(codes.Internal, "service returned no error and no object")
}
err = i.processError(err)
return value, err
}
}
func (i *ErrInterceptor) StreamInterceptor() grpc.StreamServerInterceptor {
return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo,
handler grpc.StreamHandler) error {
err := handler(srv, stream)
err = i.processError(err)
return err
}
}
func (i *ErrInterceptor) processError(err error) error {
if err == nil {
return nil
}
message := err.Error()
switch {
case errors.Is(err, context.DeadlineExceeded):
return status.Error(codes.DeadlineExceeded, message)
case errors.Is(err, types.ErrNotFound):
return status.Error(codes.NotFound, message)
case errors.Is(err, types.ErrAlreadyExists):
return status.Error(codes.AlreadyExists, message)
case errors.Is(err, types.ErrInvalidArgument):
return status.Error(codes.InvalidArgument, message)
case errors.Is(err, types.ErrInvalidPath):
return status.Error(codes.InvalidArgument, message)
case errors.Is(err, types.ErrUndefinedAction):
return status.Error(codes.InvalidArgument, message)
case errors.Is(err, types.ErrHeaderCannotBeEmpty):
return status.Error(codes.InvalidArgument, message)
case errors.Is(err, types.ErrActionListEmpty):
return status.Error(codes.FailedPrecondition, message)
case errors.Is(err, types.ErrContentSentBeforeAction):
return status.Error(codes.FailedPrecondition, message)
default:
return status.Errorf(codes.Unknown, message)
}
}