sealed abstract class Watcher[F[_]] extends AnyRef
Allows watching the file system for changes to directories and files by using the platform's WatchService
.
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- Watcher.scala
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abstract
def
events(pollTimeout: FiniteDuration = 1.second): Stream[F, Event]
Stream of events for paths that have been registered or watched.
Stream of events for paths that have been registered or watched.
- pollTimeout
amount of time for which the underlying platform is polled for events
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abstract
def
register(path: Path, types: Seq[EventType] = Nil, modifiers: Seq[Modifier] = Nil): F[F[Unit]]
Registers for events on the specified path.
Registers for events on the specified path.
This is a low-level abstraction on the platform's
Path#register
. The supplied path must be a directory and events are raised for only direct descendants of the path. Use watch for a higher level API.Returns a cancellation task that unregisters the path for events. Unregistration is optional - the
Watcher
will free all resources when it is finalized. Unregistration is only needed when aWatcher
will continue to be used after unregistration.- path
directory to watch for events
- types
event types to register for; if
Nil
, all standard event types are registered- modifiers
modifiers to pass to the underlying
WatchService
when registering- returns
unregistration task
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abstract
def
watch(path: Path, types: Seq[EventType] = Nil, modifiers: Seq[Modifier] = Nil): F[F[Unit]]
Registers for events on the specified path.
Registers for events on the specified path.
This is more feature-rich than the platform's
Path#register
. The supplied path may be a file or directory and events may raised for all descendants of the path. Use register for a lower-level API.Returns a cancellation task that unregisters the path for events. Unregistration is optional - the
Watcher
will free all resources when it is finalized. Unregistration is only needed when aWatcher
will continue to be used after unregistration.- path
file or directory to watch for events
- types
event types to register for; if
Nil
, all standard event types are registered- modifiers
modifiers to pass to the underlying
WatchService
when registering- returns
unregistration task
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(Since version ) see corresponding Javadoc for more information.