Documentation
¶
Overview ¶
Package watcher provides file update notification functionality as a module.
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
View Source
var ( ErrMissingWithTarget = fmt.Errorf("watcher.Watcher missing or empty WithTarget option") ErrMissingWithFunc = fmt.Errorf("watcher.Watcher missing WithFunc option") )
Functions ¶
This section is empty.
Types ¶
type Opt ¶
func WithTarget ¶
type Watcher ¶
type Watcher struct {
// contains filtered or unexported fields
}
func New ¶
New creates watcher with given options. WithTarget and WithFunc options are mandatory.
Example ¶
tmpFile, err := os.CreateTemp("", testFilePattern)
if err != nil {
fmt.Println(err)
return
}
defer os.Remove(tmpFile.Name())
t := ticker.New(
ticker.WithInterval(time.Second),
ticker.WithFunc(func() error {
_, err = tmpFile.Write([]byte("updated"))
if err != nil {
return err
}
return nil
}),
)
w := watcher.New(
watcher.WithTarget(tmpFile.Name()),
watcher.WithFunc(func() error {
slog.Info("Hello from watcher")
return errors.New("watcher error")
}),
)
err = service.Run(service.Modules{t, w})
if err != nil {
fmt.Println(err)
}
Output: 1 error occurred: * failed to run module watcher.Watcher: watcher error
Source Files
Click to show internal directories.
Click to hide internal directories.