/
monitorutil.go
48 lines (42 loc) · 1.31 KB
/
monitorutil.go
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
// Copyright (c) 2018 Timo Savola. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package server
import (
"gate.computer/gate/server/event"
)
// MultiMonitor combines multiple event monitors.
func MultiMonitor(monitors ...func(*event.Event, error)) func(*event.Event, error) {
return func(ev *event.Event, err error) {
for _, f := range monitors {
f(ev, err)
}
}
}
// ErrorEventLogger creates an event monitor which prints log messages.
// Internal errors are printed to errorLog and other events to eventLog.
func ErrorEventLogger(errorLog, eventLog Logger) func(*event.Event, error) {
return func(ev *event.Event, err error) {
if ev.Type == event.TypeFailInternal {
printToLogger(errorLog, ev, err)
} else {
printToLogger(eventLog, ev, err)
}
}
}
// ErrorLogger creates an event monitor which prints log messages. Internal
// errors are printed to errorLog and other events are ignored.
func ErrorLogger(errorLog Logger) func(*event.Event, error) {
return func(ev *event.Event, err error) {
if ev.Type == event.TypeFailInternal {
printToLogger(errorLog, ev, err)
}
}
}
func printToLogger(l Logger, ev *event.Event, err error) {
if err == nil {
l.Printf("%v", ev)
} else {
l.Printf("%v error:%q", ev, err.Error())
}
}