milvus/internal/util/grpcclient/errors.go
congqixia de8f2f76c5
Fix shardLeader cache with ErrConnect check (#17402)
Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
2022-06-07 12:20:06 +08:00

51 lines
1.5 KiB
Go

// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 grpcclient
import (
"errors"
"fmt"
)
// ErrConnect is the instance for errors.Is target usage.
var ErrConnect errConnect
// make sure ErrConnect implements error.
var _ error = errConnect{}
// errConnect error instance returned when dial error returned.
type errConnect struct {
addr string
err error
}
// Error implements error interface.
func (e errConnect) Error() string {
return fmt.Sprintf("failed to connect %s, reason: %s", e.addr, e.err.Error())
}
// Is checks err is ErrConnect to make errors.Is work.
func (e errConnect) Is(err error) bool {
var ce errConnect
return errors.As(err, &ce)
}
// wrapErrConnect wrap connection error and related address to ErrConnect.
func wrapErrConnect(addr string, err error) error {
return errConnect{addr: addr, err: err}
}