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Index ¶
Constants ¶
This section is empty.
Variables ¶
var NewINotifyWatcher = newWatcher
NewInotifyWatcher returns a new INotifyWatcher.
Functions ¶
func Manifold ¶
func Manifold(config ManifoldConfig) dependency.Manifold
Manifold returns a dependency manifold that runs the filenotifywatcher worker, using the resource names defined in the supplied config.
Types ¶
type FileNotifyWatcher ¶
type FileNotifyWatcher interface {
// Changes returns a channel for the given file name that will contain
// if a file was created or deleted.
// TODO (stickupkid): We could further advance this to return a channel
// of ints that represents the number of changes we want to advance per
// step.
Changes(fileName string) (<-chan bool, error)
}
FileNotifyWatcher represents a way to watch for changes in a namespace folder directory.
type FileWatcher ¶
type FileWatcher interface {
worker.Worker
// Changes returns a channel that will receive a value whenever the
// watched file changes.
Changes() <-chan bool
}
FileWatcher is an interface that allows a worker to watch a file for changes.
func NewWatcher ¶
func NewWatcher(fileName string, opts ...Option) (FileWatcher, error)
type INotifyWatcher ¶
type INotifyWatcher interface {
// Watch adds the given file or directory (non-recursively) to the watch.
Watch(path string) error
// Events returns the next event.
Events() <-chan *inotify.Event
// Errors returns the next error.
Errors() <-chan error
// Close removes all watches and closes the events channel.
Close() error
}
INotifyWatcher is an interface that allows a worker to watch a file for changes using inotify.
type Logger ¶
type Logger interface {
Errorf(message string, args ...interface{})
Warningf(message string, args ...interface{})
Infof(message string, args ...interface{})
Debugf(message string, args ...interface{})
Tracef(message string, args ...interface{})
IsTraceEnabled() bool
}
Logger represents the logging methods called.
type ManifoldConfig ¶
type ManifoldConfig struct {
Clock clock.Clock
Logger Logger
NewWatcher WatcherFn
NewINotifyWatcher func() (INotifyWatcher, error)
}
ManifoldConfig defines the names of the manifolds on which a Manifold will depend.
func (ManifoldConfig) Validate ¶
func (cfg ManifoldConfig) Validate() error
type Option ¶
type Option func(*option)
func WithINotifyWatcherFn ¶
func WithINotifyWatcherFn(watcherFn func() (INotifyWatcher, error)) Option
WithINotifyWatcherFn is an option for NewWatcher that specifies the inotify watcher to use.
func WithLogger ¶
WithLogger is an option for NewWatcher that specifies the logger to use.
type Watcher ¶
type Watcher struct {
// contains filtered or unexported fields
}
type WatcherFn ¶
type WatcherFn = func(string, ...Option) (FileWatcher, error)
WatcherFn is a function that returns a new Watcher.
type WorkerConfig ¶
type WorkerConfig struct {
Clock clock.Clock
Logger Logger
NewWatcher WatcherFn
NewINotifyWatcher func() (INotifyWatcher, error)
}
WorkerConfig encapsulates the configuration options for the changestream worker.
func (*WorkerConfig) Validate ¶
func (c *WorkerConfig) Validate() error
Validate ensures that the config values are valid.
Source Files