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
- 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
Watcherwill free all resources when it is finalized. Unregistration is only needed when aWatcherwill 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
WatchServicewhen registering- returns
unregistration task
- 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
Watcherwill free all resources when it is finalized. Unregistration is only needed when aWatcherwill 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
WatchServicewhen registering- returns
unregistration task
Concrete Value Members
- final def !=(arg0: Any): Boolean
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- final def ##: Int
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- def +(other: String): String
- def ->[B](y: B): (Watcher[F], B)
- final def ==(arg0: Any): Boolean
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- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
- def ensuring(cond: (Watcher[F]) => Boolean, msg: => Any): Watcher[F]
- def ensuring(cond: (Watcher[F]) => Boolean): Watcher[F]
- def ensuring(cond: Boolean, msg: => Any): Watcher[F]
- def ensuring(cond: Boolean): Watcher[F]
- final def eq(arg0: AnyRef): Boolean
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- def equals(arg0: AnyRef): Boolean
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- def formatted(fmtstr: String): String
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- final def synchronized[T0](arg0: => T0): T0
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- def toString(): String
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- final def wait(arg0: Long, arg1: Int): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
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- def finalize(): Unit
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- @throws(classOf[java.lang.Throwable]) @Deprecated @deprecated
- Deprecated
(Since version ) see corresponding Javadoc for more information.
- def →[B](y: B): (Watcher[F], B)
- Implicit
- This member is added by an implicit conversion from Watcher[F] toArrowAssoc[Watcher[F]] performed by method ArrowAssoc in scala.Predef.
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- @deprecated
- Deprecated
(Since version 2.13.0) Use
->instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.