1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package jsonrpc2
import (
"encoding/json"
"log"
"time"
)
// Logger is an option you can pass to NewConn which is invoked for
// all messages flowing through a Conn.
// direction indicates if the message being recieved or sent
// id is the message id, if not set it was a notification
// elapsed is the time between a call being seen and the response, and is
// negative for anything that is not a response.
// method is the method name specified in the message
// payload is the parameters for a call or notification, and the result for a
// response
type Logger = func(direction Direction, id *ID, elapsed time.Duration, method string, payload *json.RawMessage, err *Error)
// Direction is used to indicate to a logger whether the logged message was being
// sent or received.
type Direction bool
const (
// Send indicates the message is outgoing.
Send = Direction(true)
// Receive indicates the message is incoming.
Receive = Direction(false)
)
func (d Direction) String() string {
switch d {
case Send:
return "send"
case Receive:
return "receive"
default:
panic("unreachable")
}
}
// Log is an implementation of Logger that outputs using log.Print
// It is not used by default, but is provided for easy logging in users code.
func Log(direction Direction, id *ID, elapsed time.Duration, method string, payload *json.RawMessage, err *Error) {
switch {
case err != nil:
log.Printf("%v failure [%v] %s %v", direction, id, method, err)
case id == nil:
log.Printf("%v notification %s %s", direction, method, *payload)
case elapsed >= 0:
log.Printf("%v response in %v [%v] %s %s", direction, elapsed, id, method, *payload)
default:
log.Printf("%v call [%v] %s %s", direction, id, method, *payload)
}
}
|
