vitess.io/vitess@v0.16.2/go/vt/vtctl/grpcvtctldserver/log.go (about)

     1  /*
     2  Copyright 2021 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8  	http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package grpcvtctldserver
    18  
    19  import (
    20  	"sync"
    21  
    22  	"vitess.io/vitess/go/vt/logutil"
    23  
    24  	logutilpb "vitess.io/vitess/go/vt/proto/logutil"
    25  )
    26  
    27  func eventStreamLogger() (logutil.Logger, func() []*logutilpb.Event) {
    28  	var (
    29  		m      sync.Mutex
    30  		events []*logutilpb.Event
    31  		logger = logutil.NewCallbackLogger(func(e *logutilpb.Event) {
    32  			m.Lock()
    33  			defer m.Unlock()
    34  			events = append(events, e)
    35  		})
    36  	)
    37  
    38  	return logger, func() []*logutilpb.Event {
    39  		m.Lock()
    40  		defer m.Unlock()
    41  		return events
    42  	}
    43  }