abstract class RefreshRef[F[_], V] extends AnyRef
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- new RefreshRef()
Abstract Value Members
- abstract def cancel: F[Boolean]
Cancel polling and remove data from memory
Cancel polling and remove data from memory
- returns
true if there was data and polling, false if it's empty
- abstract def get(period: FiniteDuration, staleTimeoutO: Option[FiniteDuration])(fetch: F[V])(errorHandler: PartialFunction[Throwable, F[Unit]]): F[V]
- Attributes
- protected
- abstract def get: F[Option[V]]
Simply gets the data from memory
Simply gets the data from memory
- returns
Some(v) if exists, None if not
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- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
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- @native() @HotSpotIntrinsicCandidate()
- def getOrFetch(period: FiniteDuration, staleTimeout: FiniteDuration)(fetch: F[V])(errorHandler: PartialFunction[Throwable, F[Unit]]): F[V]
Like
getOrFetch(period: FiniteDuration)(fetch: F[V])but with added resilency against failures infetch.Like
getOrFetch(period: FiniteDuration)(fetch: F[V])but with added resilency against failures infetch.After
staleTimeoutof continuous polling failures, the polling will stop and data removed. A successfetchresets the timer.- period
if set to zero will simply return
fetch- staleTimeout
timeout after the last successful
fetchRepeatingSuite.scala
- def getOrFetch(period: FiniteDuration)(fetch: F[V]): F[V]
Either gets the data from the memory if available, or use the
fetchto retrieve the data, and setup a polling everyperiodto update the data in memory usingfetch.Either gets the data from the memory if available, or use the
fetchto retrieve the data, and setup a polling everyperiodto update the data in memory usingfetch. Hence the first call toref.getOrFetchwill take longer to actually load the data from upstream to memory. Subsequent call will always return the data from memory.When any exception occurs during
getDataFromUpstream, the refresh stops, and the data is removed from the memory. All subsequent requests will incure effect infetch, whose failure will be surfaced, until it succeeds.- period
if set to zero will simply return
fetch
- def hashCode(): Int
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- final def wait(arg0: Long, arg1: Int): Unit
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- final def wait(arg0: Long): Unit
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- final def wait(): Unit
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