go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/logdog/client/coordinator/errors.go (about)

     1  // Copyright 2015 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package coordinator
    16  
    17  import (
    18  	"errors"
    19  
    20  	"google.golang.org/grpc/codes"
    21  	"google.golang.org/grpc/status"
    22  )
    23  
    24  var (
    25  	// ErrNoAccess is returned from methods to indicate that the requested
    26  	// operation could not be performed because the user does not have access
    27  	// to that data or function.
    28  	ErrNoAccess = errors.New("coordinator: no access")
    29  
    30  	// ErrNoSuchStream is returned when the requested strem path does not exist.
    31  	ErrNoSuchStream = errors.New("coordinator: no such stream")
    32  )
    33  
    34  func normalizeError(err error) error {
    35  	if err == nil {
    36  		return nil
    37  	}
    38  	switch status.Code(err) {
    39  	case codes.NotFound:
    40  		return ErrNoSuchStream
    41  
    42  	case codes.Unauthenticated, codes.PermissionDenied:
    43  		return ErrNoAccess
    44  
    45  	default:
    46  		return err
    47  	}
    48  }