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db.go
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db.go
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// Copyright 2018 The Nakama Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server
import (
"errors"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
const (
dbErrorUniqueViolation = "23505"
)
var ErrRowsAffectedCount = errors.New("rows_affected_count")
// A type that wraps an outgoing client-facing error together with an underlying cause error.
type statusError struct {
code codes.Code
status error
cause error
}
// Implement the error interface.
func (s *statusError) Error() string {
return s.status.Error()
}
// Implement the crdb.ErrorCauser interface to allow the crdb.ExecuteInTx wrapper to figure out whether to retry or not.
func (s *statusError) Cause() error {
return s.cause
}
func (s *statusError) Status() error {
return s.status
}
func (s *statusError) Code() codes.Code {
return s.code
}
// Helper function for creating status errors that wrap underlying causes, usually DB errors.
func StatusError(code codes.Code, msg string, cause error) error {
return &statusError{
code: code,
status: status.Error(code, msg),
cause: cause,
}
}