-
-
Notifications
You must be signed in to change notification settings - Fork 105
/
main.go
47 lines (43 loc) · 1.13 KB
/
main.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
// Copyright © 2023 Ory Corp
// SPDX-License-Identifier: Apache-2.0
package main
import (
"context"
"fmt"
"io"
"os"
"github.com/ory/x/watcherx"
)
func main() {
if len(os.Args) != 2 {
_, _ = fmt.Fprintf(os.Stderr, "expected 1 comand line argument but got %d\n", len(os.Args)-1)
os.Exit(1)
}
c := make(chan watcherx.Event)
ctx, cancel := context.WithCancel(context.Background())
_, err := watcherx.WatchFile(ctx, os.Args[1], c)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "could not initialize file watcher: %+v\n", err)
os.Exit(1)
}
fmt.Printf("watching file %s\n", os.Args[1])
defer cancel()
for {
switch e := (<-c).(type) {
case *watcherx.ChangeEvent:
var data []byte
data, err = io.ReadAll(e.Reader())
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "could not read data: %+v\n", err)
os.Exit(1)
}
fmt.Printf("got change event:\nData: %s,\nSrc: %s\n", data, e.Source())
case *watcherx.RemoveEvent:
fmt.Printf("got remove event:\nSrc: %s\n", e.Source())
case *watcherx.ErrorEvent:
fmt.Printf("got error event:\nError: %s\n", e.Error())
default:
fmt.Println("got unknown event")
}
}
}