Cancel and wait for asyncstatemachine futures when stopping (#493)
* Simplify `.then` (promise api) and tests * Remove tracked future when cancelled. Add tracked future tests * Track and cancel statemachine futures The futures created in each asyncstatemachine instance are tracked, and each future is cancelled and waited in `stop`. Change `asyncstatemachine.stop` to be async so `machine.trackedFutures.cancelAndWait` could be called. Add a constructor for `asyncstatemachine` that initialises the `trackedFutures` instance, and call the constructor from derived class constructors.
This commit is contained in:
Eric
GitHub
parent
1d161d383e
commit
3e80de3454
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@ -31,13 +31,14 @@ func new*(
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clock: Clock
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): Purchase =
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## create a new instance of a Purchase
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##
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Purchase(
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future: Future[void].new(),
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requestId: requestId,
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market: market,
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clock: clock
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)
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##
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var purchase = Purchase.new()
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purchase.future = Future[void].new()
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purchase.requestId = requestId
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purchase.market = market
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purchase.clock = clock
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return purchase
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func new*(
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_: type Purchase,
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@ -15,10 +15,10 @@ import ./sales/salescontext
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import ./sales/salesagent
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import ./sales/statemachine
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import ./sales/slotqueue
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import ./sales/trackedfutures
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import ./sales/states/preparing
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import ./sales/states/unknown
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import ./utils/then
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import ./utils/trackedfutures
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## Sales holds a list of available storage that it may sell.
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##
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@ -32,12 +32,13 @@ proc newSalesAgent*(context: SalesContext,
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requestId: RequestId,
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slotIndex: UInt256,
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request: ?StorageRequest): SalesAgent =
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SalesAgent(
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context: context,
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data: SalesData(
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requestId: requestId,
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slotIndex: slotIndex,
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request: request))
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var agent = SalesAgent.new()
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agent.context = context
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agent.data = SalesData(
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requestId: requestId,
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slotIndex: slotIndex,
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request: request)
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return agent
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proc retrieveRequest*(agent: SalesAgent) {.async.} =
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let data = agent.data
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@ -96,5 +97,5 @@ proc unsubscribe*(agent: SalesAgent) {.async.} =
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agent.subscribed = false
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proc stop*(agent: SalesAgent) {.async.} =
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procCall Machine(agent).stop()
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await Machine(agent).stop()
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await agent.unsubscribe()
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@ -1,5 +1,4 @@
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import std/sequtils
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import std/sugar
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import std/tables
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import pkg/chronicles
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import pkg/chronos
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@ -7,13 +6,13 @@ import pkg/questionable
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import pkg/questionable/results
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import pkg/upraises
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import ./reservations
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import ./trackedfutures
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import ../errors
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import ../rng
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import ../utils
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import ../contracts/requests
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import ../utils/asyncheapqueue
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import ../utils/then
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import ../utils/trackedfutures
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logScope:
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topics = "marketplace slotqueue"
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@ -1,7 +1,10 @@
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import std/sugar
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import pkg/questionable
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import pkg/chronos
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import pkg/chronicles
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import pkg/upraises
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import ./trackedfutures
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import ./then
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push: {.upraises:[].}
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@ -10,8 +13,8 @@ type
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state: State
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running: Future[void]
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scheduled: AsyncQueue[Event]
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scheduling: Future[void]
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started: bool
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trackedFutures: TrackedFutures
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State* = ref object of RootObj
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Query*[T] = proc(state: State): T
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Event* = proc(state: State): ?State {.gcsafe, upraises:[].}
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@ -19,6 +22,9 @@ type
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logScope:
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topics = "statemachine"
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proc new*[T: Machine](_: type T): T =
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T(trackedFutures: TrackedFutures.new())
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method `$`*(state: State): string {.base.} =
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raiseAssert "not implemented"
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@ -60,21 +66,21 @@ proc run(machine: Machine, state: State) {.async.} =
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discard
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proc scheduler(machine: Machine) {.async.} =
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proc onRunComplete(udata: pointer) {.gcsafe.} =
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var fut = cast[FutureBase](udata)
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if fut.failed():
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machine.schedule(machine.onError(fut.error))
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var running: Future[void]
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try:
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while true:
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let event = await machine.scheduled.get()
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while machine.started:
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let event = await machine.scheduled.get().track(machine)
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if next =? event(machine.state):
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if not machine.running.isNil:
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await machine.running.cancelAndWait()
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if not running.isNil and not running.finished:
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await running.cancelAndWait()
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machine.state = next
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debug "enter state", state = machine.state
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machine.running = machine.run(machine.state)
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machine.running.addCallback(onRunComplete)
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running = machine.run(machine.state)
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running
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.track(machine)
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.catch((err: ref CatchableError) =>
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machine.schedule(machine.onError(err))
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)
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except CancelledError:
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discard
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@ -84,18 +90,20 @@ proc start*(machine: Machine, initialState: State) =
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if machine.scheduled.isNil:
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machine.scheduled = newAsyncQueue[Event]()
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machine.scheduling = machine.scheduler()
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machine.started = true
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machine.scheduler()
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.track(machine)
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.catch((err: ref CatchableError) =>
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error("Error in scheduler", error = err.msg)
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)
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machine.schedule(Event.transition(machine.state, initialState))
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proc stop*(machine: Machine) =
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proc stop*(machine: Machine) {.async.} =
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if not machine.started:
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return
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if not machine.scheduling.isNil:
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machine.scheduling.cancel()
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if not machine.running.isNil:
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machine.running.cancel()
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machine.started = false
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await machine.trackedFutures.cancelTracked()
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machine.state = nil
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machine.started = false
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@ -22,12 +22,11 @@ import pkg/upraises
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# `.catch` is called when the `Future` fails. In the case when the `Future`
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# returns a `Result[T, ref CatchableError` (or `?!T`), `.catch` will be called
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# if the `Result` contains an error. If the `Future` is already failed (or
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# `Future[?!T]` contains an error), the `.catch` callback will be excuted
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# `Future[?!T]` contains an error), the `.catch` callback will be executed
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# immediately.
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# NOTE: Cancelled `Futures` are discarded as bubbling the `CancelledError` to
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# the synchronous closure will likely cause an unintended and unhandled
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# exception.
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# `.cancelled` is called when the `Future` is cancelled. If the `Future` is
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# already cancelled, the `.cancelled` callback will be executed immediately.
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# More info on JavaScript's Promise API can be found at:
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# https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
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@ -56,44 +55,30 @@ runnableExamples:
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type
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OnSuccess*[T] = proc(val: T) {.gcsafe, upraises: [].}
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OnError* = proc(err: ref CatchableError) {.gcsafe, upraises: [].}
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OnCancelled* = proc() {.gcsafe, upraises: [].}
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proc ignoreError(err: ref CatchableError) = discard
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proc ignoreCancelled() = discard
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template handleFinished(future: FutureBase,
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onError: OnError,
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onCancelled: OnCancelled) =
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template returnOrError(future: FutureBase, onError: OnError) =
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if not future.finished:
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return
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if future.cancelled:
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# do not bubble as closure is synchronous
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onCancelled()
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return
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if future.failed:
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onError(future.error)
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return
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proc then*(future: Future[void],
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onError: OnError):
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Future[void] =
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proc then*(future: Future[void], onSuccess: OnSuccess[void]): Future[void] =
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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proc cancellation(udata: pointer) =
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if not future.finished():
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future.removeCallback(cb)
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future.addCallback(cb)
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future.cancelCallback = cancellation
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return future
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proc then*(future: Future[void],
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onSuccess: OnSuccess[void],
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onError: OnError = ignoreError):
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Future[void] =
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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future.handleFinished(ignoreError, ignoreCancelled)
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onSuccess()
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proc cancellation(udata: pointer) =
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@ -104,42 +89,13 @@ proc then*(future: Future[void],
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future.cancelCallback = cancellation
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return future
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proc then*[T](future: Future[T],
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onSuccess: OnSuccess[T],
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onError: OnError = ignoreError):
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Future[T] =
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proc then*[T](future: Future[T], onSuccess: OnSuccess[T]): Future[T] =
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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future.handleFinished(ignoreError, ignoreCancelled)
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without val =? future.read.catch, err:
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onError(err)
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return
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onSuccess(val)
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proc cancellation(udata: pointer) =
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if not future.finished():
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future.removeCallback(cb)
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future.addCallback(cb)
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future.cancelCallback = cancellation
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return future
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proc then*[T](future: Future[?!T],
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onSuccess: OnSuccess[T],
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onError: OnError = ignoreError):
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Future[?!T] =
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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try:
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without val =? future.read, err:
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onError(err)
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return
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if val =? future.read.catch:
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onSuccess(val)
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except CatchableError as e:
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onError(e)
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proc cancellation(udata: pointer) =
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if not future.finished():
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@ -149,18 +105,16 @@ proc then*[T](future: Future[?!T],
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future.cancelCallback = cancellation
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return future
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proc then*(future: Future[?!void],
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onError: OnError = ignoreError):
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Future[?!void] =
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proc then*[T](future: Future[?!T], onSuccess: OnSuccess[T]): Future[?!T] =
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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future.handleFinished(ignoreError, ignoreCancelled)
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try:
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if err =? future.read.errorOption:
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onError(err)
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if val =? future.read:
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onSuccess(val)
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except CatchableError as e:
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onError(e)
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ignoreError(e)
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proc cancellation(udata: pointer) =
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if not future.finished():
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@ -170,22 +124,17 @@ proc then*(future: Future[?!void],
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future.cancelCallback = cancellation
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return future
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proc then*(future: Future[?!void],
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onSuccess: OnSuccess[void],
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onError: OnError = ignoreError):
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Future[?!void] =
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proc then*(future: Future[?!void], onSuccess: OnSuccess[void]): Future[?!void] =
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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future.handleFinished(ignoreError, ignoreCancelled)
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try:
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if err =? future.read.errorOption:
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onError(err)
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return
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if future.read.isOk:
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onSuccess()
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except CatchableError as e:
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onError(e)
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ignoreError(e)
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return
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onSuccess()
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proc cancellation(udata: pointer) =
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if not future.finished():
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@ -197,8 +146,10 @@ proc then*(future: Future[?!void],
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proc catch*[T](future: Future[T], onError: OnError) =
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if future.isNil: return
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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future.handleFinished(onError, ignoreCancelled)
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proc cancellation(udata: pointer) =
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if not future.finished():
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@ -209,8 +160,10 @@ proc catch*[T](future: Future[T], onError: OnError) =
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proc catch*[T](future: Future[?!T], onError: OnError) =
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if future.isNil: return
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proc cb(udata: pointer) =
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future.returnOrError(onError)
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future.handleFinished(onError, ignoreCancelled)
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try:
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if err =? future.read.errorOption:
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@ -224,3 +177,31 @@ proc catch*[T](future: Future[?!T], onError: OnError) =
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future.addCallback(cb)
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future.cancelCallback = cancellation
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proc cancelled*[T](future: Future[T], onCancelled: OnCancelled): Future[T] =
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proc cb(udata: pointer) =
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future.handleFinished(ignoreError, onCancelled)
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proc cancellation(udata: pointer) =
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if not future.finished():
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future.removeCallback(cb)
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onCancelled()
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future.addCallback(cb)
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future.cancelCallback = cancellation
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return future
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proc cancelled*[T](future: Future[?!T], onCancelled: OnCancelled): Future[?!T] =
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proc cb(udata: pointer) =
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future.handleFinished(ignoreError, onCancelled)
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proc cancellation(udata: pointer) =
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if not future.finished():
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future.removeCallback(cb)
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onCancelled()
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future.addCallback(cb)
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future.cancelCallback = cancellation
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return future
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|
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@ -12,21 +12,25 @@ type
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logScope:
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topics = "trackable futures"
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proc track*[T](self: TrackedFutures, fut: Future[T]): Future[T] =
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logScope:
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id = fut.id
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proc len*(self: TrackedFutures): int = self.futures.len
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proc removeFuture() =
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if not self.cancelling and not fut.isNil:
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trace "removing tracked future"
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self.futures.del(fut.id)
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proc removeFuture(self: TrackedFutures, future: FutureBase) =
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if not self.cancelling and not future.isNil:
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trace "removing tracked future"
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self.futures.del(future.id)
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proc track*[T](self: TrackedFutures, fut: Future[T]): Future[T] =
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if self.cancelling:
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return fut
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trace "tracking future", id = fut.id
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self.futures[fut.id] = FutureBase(fut)
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fut
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.then((val: T) => removeFuture())
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.catch((e: ref CatchableError) => removeFuture())
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.then((val: T) => self.removeFuture(fut))
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.cancelled(() => self.removeFuture(fut))
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.catch((e: ref CatchableError) => self.removeFuture(fut))
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trace "tracking future"
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self.futures[fut.id] = FutureBase(fut)
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return fut
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proc track*[T, U](future: Future[T], self: U): Future[T] =
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@ -43,4 +47,5 @@ proc cancelTracked*(self: TrackedFutures) {.async.} =
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trace "cancelling tracked future", id = future.id
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await future.cancelAndWait()
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self.futures.clear()
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self.cancelling = false
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@ -10,6 +10,7 @@ import pkg/codex/proving
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import ../helpers/mockmarket
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import ../helpers/mockclock
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import ../helpers/eventually
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import ../helpers
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import ../examples
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|
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var onCancelCalled = false
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|
|
|
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|
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@ -3,5 +3,6 @@ import ./utils/testkeyutils
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import ./utils/testasyncstatemachine
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import ./utils/testtimer
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import ./utils/testthen
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import ./utils/testtrackedfutures
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|
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{.warning[UnusedImport]: off.}
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|
|
|
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|
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@ -99,7 +99,7 @@ asyncchecksuite "async state machines":
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test "stops scheduling and current state":
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machine.start(State2.new())
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await sleepAsync(1.millis)
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machine.stop()
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await machine.stop()
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machine.schedule(moveToNextStateEvent)
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await sleepAsync(1.millis)
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check runs == [0, 1, 0, 0]
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|
|
@ -130,5 +130,5 @@ asyncchecksuite "async state machines":
|
|||
|
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machine.start(State2.new())
|
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check eventually machine.query(description).isSome
|
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machine.stop()
|
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await machine.stop()
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check machine.query(description).isNone
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|
|
|
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|
|
@ -5,340 +5,409 @@ import pkg/questionable/results
|
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import codex/utils/then
|
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import ../helpers
|
||||
|
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proc newError(): ref CatchableError =
|
||||
(ref CatchableError)(msg: "some error")
|
||||
|
||||
asyncchecksuite "then - Future[void]":
|
||||
var returnsVoidWasRun: bool
|
||||
var error = (ref CatchableError)(msg: "some error")
|
||||
var error = newError()
|
||||
var future: Future[void]
|
||||
|
||||
setup:
|
||||
returnsVoidWasRun = false
|
||||
future = newFuture[void]("test void")
|
||||
|
||||
proc returnsVoid() {.async.} =
|
||||
await sleepAsync 1.millis
|
||||
returnsVoidWasRun = true
|
||||
teardown:
|
||||
if not future.finished:
|
||||
raiseAssert "test should finish future"
|
||||
|
||||
proc returnsVoidError() {.async.} =
|
||||
raise error
|
||||
test "then callback is fired when future is already finished":
|
||||
var firedImmediately = false
|
||||
future.complete()
|
||||
discard future.then(proc() = firedImmediately = true)
|
||||
check eventually firedImmediately
|
||||
|
||||
proc returnsVoidCancelled() {.async.} =
|
||||
await sleepAsync(1.seconds)
|
||||
test "then callback is fired after future is finished":
|
||||
var fired = false
|
||||
discard future.then(proc() = fired = true)
|
||||
future.complete()
|
||||
check eventually fired
|
||||
|
||||
proc wasCancelled(error: ref CancelledError): bool =
|
||||
not error.isNil and error.msg == "Future operation cancelled!"
|
||||
test "catch callback is fired when future is already failed":
|
||||
var actual: ref CatchableError
|
||||
future.fail(error)
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
check eventually actual == error
|
||||
|
||||
test "calls async proc when returns Future[void]":
|
||||
discard returnsVoid().then(
|
||||
proc(err: ref CatchableError) = discard
|
||||
)
|
||||
check eventually returnsVoidWasRun
|
||||
test "catch callback is fired after future is failed":
|
||||
var actual: ref CatchableError
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
future.fail(error)
|
||||
check eventually actual == error
|
||||
|
||||
test "calls onSuccess when Future[void] complete":
|
||||
test "cancelled callback is fired when future is already cancelled":
|
||||
var fired = false
|
||||
await future.cancelAndWait()
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
check eventually fired
|
||||
|
||||
test "cancelled callback is fired after future is cancelled":
|
||||
var fired = false
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
await future.cancelAndWait()
|
||||
check eventually fired
|
||||
|
||||
test "does not fire other callbacks when successful":
|
||||
var onSuccessCalled = false
|
||||
discard returnsVoid().then(
|
||||
proc() = onSuccessCalled = true,
|
||||
proc(err: ref CatchableError) = discard
|
||||
)
|
||||
check eventually returnsVoidWasRun
|
||||
check eventually onSuccessCalled
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
test "can pass only onSuccess for Future[void]":
|
||||
future
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
future.complete()
|
||||
|
||||
check eventually onSuccessCalled
|
||||
check always (not onCancelledCalled and not onCatchCalled)
|
||||
|
||||
test "does not fire other callbacks when fails":
|
||||
var onSuccessCalled = false
|
||||
discard returnsVoid().then(
|
||||
proc() = onSuccessCalled = true
|
||||
)
|
||||
check eventually returnsVoidWasRun
|
||||
check eventually onSuccessCalled
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
test "can chain onSuccess when Future[void] complete":
|
||||
future
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
future.fail(error)
|
||||
|
||||
check eventually onCatchCalled
|
||||
check always (not onCancelledCalled and not onSuccessCalled)
|
||||
|
||||
test "does not fire other callbacks when cancelled":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
future
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
await future.cancelAndWait()
|
||||
|
||||
check eventually onCancelledCalled
|
||||
check always (not onSuccessCalled and not onCatchCalled)
|
||||
|
||||
test "can chain onSuccess when future completes":
|
||||
var onSuccessCalledTimes = 0
|
||||
discard returnsVoid()
|
||||
discard future
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
future.complete()
|
||||
check eventually onSuccessCalledTimes == 3
|
||||
|
||||
test "calls onError when Future[void] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsVoidError().then(
|
||||
proc() = discard,
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "calls onError when Future[void] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsVoidError().then(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "catch callback fired when Future[void] fails":
|
||||
var errorActual: ref CatchableError
|
||||
returnsVoidError().catch(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "does not fire onSuccess callback when Future[void] fails":
|
||||
var onSuccessCalled = false
|
||||
|
||||
returnsVoidError()
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = discard)
|
||||
|
||||
check always (not onSuccessCalled)
|
||||
|
||||
asyncchecksuite "then - Future[T]":
|
||||
var returnsValWasRun: bool
|
||||
var error = (ref CatchableError)(msg: "some error")
|
||||
var error = newError()
|
||||
var future: Future[int]
|
||||
|
||||
setup:
|
||||
returnsValWasRun = false
|
||||
future = newFuture[int]("test void")
|
||||
|
||||
proc returnsVal(): Future[int] {.async.} =
|
||||
await sleepAsync 1.millis
|
||||
returnsValWasRun = true
|
||||
return 1
|
||||
teardown:
|
||||
if not future.finished:
|
||||
raiseAssert "test should finish future"
|
||||
|
||||
proc returnsValError(): Future[int] {.async.} =
|
||||
raise error
|
||||
test "then callback is fired when future is already finished":
|
||||
var cbVal = 0
|
||||
future.complete(1)
|
||||
discard future.then(proc(val: int) = cbVal = val)
|
||||
check eventually cbVal == 1
|
||||
|
||||
proc returnsValCancelled(): Future[int] {.async.} =
|
||||
await sleepAsync(1.seconds)
|
||||
test "then callback is fired after future is finished":
|
||||
var cbVal = 0
|
||||
discard future.then(proc(val: int) = cbVal = val)
|
||||
future.complete(1)
|
||||
check eventually cbVal == 1
|
||||
|
||||
proc wasCancelled(error: ref CancelledError): bool =
|
||||
not error.isNil and error.msg == "Future operation cancelled!"
|
||||
test "catch callback is fired when future is already failed":
|
||||
var actual: ref CatchableError
|
||||
future.fail(error)
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
check eventually actual == error
|
||||
|
||||
test "calls onSuccess when Future[T] complete":
|
||||
var returnedVal = 0
|
||||
discard returnsVal().then(
|
||||
proc(val: int) = returnedVal = val,
|
||||
proc(err: ref CatchableError) = discard
|
||||
)
|
||||
check eventually returnsValWasRun
|
||||
check eventually returnedVal == 1
|
||||
test "catch callback is fired after future is failed":
|
||||
var actual: ref CatchableError
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
future.fail(error)
|
||||
check eventually actual == error
|
||||
|
||||
test "can pass only onSuccess for Future[T]":
|
||||
var returnedVal = 0
|
||||
discard returnsVal().then(
|
||||
proc(val: int) = returnedVal = val
|
||||
)
|
||||
check eventually returnsValWasRun
|
||||
check eventually returnedVal == 1
|
||||
test "cancelled callback is fired when future is already cancelled":
|
||||
var fired = false
|
||||
await future.cancelAndWait()
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
check eventually fired
|
||||
|
||||
test "can chain onSuccess when Future[T] complete":
|
||||
var onSuccessCalledWith: seq[int] = @[]
|
||||
discard returnsVal()
|
||||
.then(proc(val: int) = onSuccessCalledWith.add(val))
|
||||
.then(proc(val: int) = onSuccessCalledWith.add(val))
|
||||
.then(proc(val: int) = onSuccessCalledWith.add(val))
|
||||
check eventually onSuccessCalledWith == @[1, 1, 1]
|
||||
test "cancelled callback is fired after future is cancelled":
|
||||
var fired = false
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
await future.cancelAndWait()
|
||||
check eventually fired
|
||||
|
||||
test "calls onError when Future[T] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsValError().then(
|
||||
proc(val: int) = discard,
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "catch callback fired when Future[T] fails":
|
||||
var errorActual: ref CatchableError
|
||||
returnsValError().catch(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "does not fire onSuccess callback when Future[T] fails":
|
||||
test "does not fire other callbacks when successful":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
returnsValError()
|
||||
future
|
||||
.then(proc(val: int) = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
future.complete(1)
|
||||
|
||||
check eventually onSuccessCalled
|
||||
check always (not onCancelledCalled and not onCatchCalled)
|
||||
|
||||
test "does not fire other callbacks when fails":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
future
|
||||
.then(proc(val: int) = onSuccessCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = discard)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
check always (not onSuccessCalled)
|
||||
future.fail(error)
|
||||
|
||||
asyncchecksuite "then - Future[?!void]":
|
||||
var returnsResultVoidWasRun: bool
|
||||
var error = (ref CatchableError)(msg: "some error")
|
||||
check eventually onCatchCalled
|
||||
check always (not onCancelledCalled and not onSuccessCalled)
|
||||
|
||||
setup:
|
||||
returnsResultVoidWasRun = false
|
||||
|
||||
proc returnsResultVoid(): Future[?!void] {.async.} =
|
||||
await sleepAsync 1.millis
|
||||
returnsResultVoidWasRun = true
|
||||
return success()
|
||||
|
||||
proc returnsResultVoidError(): Future[?!void] {.async.} =
|
||||
return failure(error)
|
||||
|
||||
|
||||
proc returnsResultVoidErrorUncaught(): Future[?!void] {.async.} =
|
||||
raise error
|
||||
|
||||
proc returnsResultVoidCancelled(): Future[?!void] {.async.} =
|
||||
await sleepAsync(1.seconds)
|
||||
return success()
|
||||
|
||||
proc wasCancelled(error: ref CancelledError): bool =
|
||||
not error.isNil and error.msg == "Future operation cancelled!"
|
||||
|
||||
test "calls onSuccess when Future[?!void] complete":
|
||||
test "does not fire other callbacks when cancelled":
|
||||
var onSuccessCalled = false
|
||||
discard returnsResultVoid().then(
|
||||
proc() = onSuccessCalled = true,
|
||||
proc(err: ref CatchableError) = discard
|
||||
)
|
||||
check eventually returnsResultVoidWasRun
|
||||
check eventually onSuccessCalled
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
test "can pass only onSuccess for Future[?!void]":
|
||||
var onSuccessCalled = false
|
||||
discard returnsResultVoid().then(
|
||||
proc() = onSuccessCalled = true
|
||||
)
|
||||
check eventually returnsResultVoidWasRun
|
||||
check eventually onSuccessCalled
|
||||
future
|
||||
.then(proc(val: int) = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
test "can chain onSuccess when Future[?!void] complete":
|
||||
await future.cancelAndWait()
|
||||
|
||||
check eventually onCancelledCalled
|
||||
check always (not onSuccessCalled and not onCatchCalled)
|
||||
|
||||
test "can chain onSuccess when future completes":
|
||||
var onSuccessCalledTimes = 0
|
||||
discard returnsResultVoid()
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
discard future
|
||||
.then(proc(val: int) = inc onSuccessCalledTimes)
|
||||
.then(proc(val: int) = inc onSuccessCalledTimes)
|
||||
.then(proc(val: int) = inc onSuccessCalledTimes)
|
||||
future.complete(1)
|
||||
check eventually onSuccessCalledTimes == 3
|
||||
|
||||
test "calls onError when Future[?!void] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsResultVoidError().then(
|
||||
proc() = discard,
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
await sleepAsync(10.millis)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "calls onError when Future[?!void] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsResultVoidError().then(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "catch callback fired when Future[?!void] fails":
|
||||
var errorActual: ref CatchableError
|
||||
returnsResultVoidError().catch(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "does not fire onSuccess callback when Future[?!void] fails":
|
||||
var onSuccessCalled = false
|
||||
|
||||
returnsResultVoidError()
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = discard)
|
||||
|
||||
check always (not onSuccessCalled)
|
||||
|
||||
test "catch callback fired when Future[?!void] fails with uncaught error":
|
||||
var errorActual: ref CatchableError
|
||||
returnsResultVoidErrorUncaught().catch(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
asyncchecksuite "then - Future[?!T]":
|
||||
var returnsResultValWasRun: bool
|
||||
var error = (ref CatchableError)(msg: "some error")
|
||||
asyncchecksuite "then - Future[?!void]":
|
||||
var error = newError()
|
||||
var future: Future[?!void]
|
||||
|
||||
setup:
|
||||
returnsResultValWasRun = false
|
||||
future = newFuture[?!void]("test void")
|
||||
|
||||
proc returnsResultVal(): Future[?!int] {.async.} =
|
||||
await sleepAsync 1.millis
|
||||
returnsResultValWasRun = true
|
||||
return success(2)
|
||||
teardown:
|
||||
if not future.finished:
|
||||
raiseAssert "test should finish future"
|
||||
|
||||
proc returnsResultValError(): Future[?!int] {.async.} =
|
||||
return failure(error)
|
||||
test "then callback is fired when future is already finished":
|
||||
var firedImmediately = false
|
||||
future.complete(success())
|
||||
discard future.then(proc() = firedImmediately = true)
|
||||
check eventually firedImmediately
|
||||
|
||||
proc returnsResultValErrorUncaught(): Future[?!int] {.async.} =
|
||||
raise error
|
||||
test "then callback is fired after future is finished":
|
||||
var fired = false
|
||||
discard future.then(proc() = fired = true)
|
||||
future.complete(success())
|
||||
check eventually fired
|
||||
|
||||
proc returnsResultValCancelled(): Future[?!int] {.async.} =
|
||||
await sleepAsync(1.seconds)
|
||||
return success(3)
|
||||
test "catch callback is fired when future is already failed":
|
||||
var actual: ref CatchableError
|
||||
future.fail(error)
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
check eventually actual == error
|
||||
|
||||
proc wasCancelled(error: ref CancelledError): bool =
|
||||
not error.isNil and error.msg == "Future operation cancelled!"
|
||||
test "catch callback is fired after future is failed":
|
||||
var actual: ref CatchableError
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
future.fail(error)
|
||||
check eventually actual == error
|
||||
|
||||
test "calls onSuccess when Future[?!T] completes":
|
||||
var actualVal = 0
|
||||
discard returnsResultVal().then(
|
||||
proc(val: int) = actualVal = val,
|
||||
proc(err: ref CatchableError) = discard
|
||||
)
|
||||
check eventually returnsResultValWasRun
|
||||
check eventually actualVal == 2
|
||||
test "cancelled callback is fired when future is already cancelled":
|
||||
var fired = false
|
||||
await future.cancelAndWait()
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
check eventually fired
|
||||
|
||||
test "can pass only onSuccess for Future[?!T]":
|
||||
var actualVal = 0
|
||||
discard returnsResultVal().then(
|
||||
proc(val: int) = actualVal = val
|
||||
)
|
||||
check eventually returnsResultValWasRun
|
||||
check eventually actualVal == 2
|
||||
test "cancelled callback is fired after future is cancelled":
|
||||
var fired = false
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
await future.cancelAndWait()
|
||||
check eventually fired
|
||||
|
||||
test "can chain onSuccess when Future[?!T] complete":
|
||||
var onSuccessCalledWith: seq[int] = @[]
|
||||
discard returnsResultVal()
|
||||
.then(proc(val: int) = onSuccessCalledWith.add val)
|
||||
.then(proc(val: int) = onSuccessCalledWith.add val)
|
||||
.then(proc(val: int) = onSuccessCalledWith.add val)
|
||||
check eventually onSuccessCalledWith == @[2, 2, 2]
|
||||
|
||||
test "calls onError when Future[?!T] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsResultValError().then(
|
||||
proc(val: int) = discard,
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "calls onError when Future[?!T] fails":
|
||||
var errorActual: ref CatchableError
|
||||
discard returnsResultValError().then(
|
||||
proc(val: int) = discard,
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "catch callback fired when Future[?!T] fails":
|
||||
var errorActual: ref CatchableError
|
||||
returnsResultValError().catch(
|
||||
proc(e: ref CatchableError) = errorActual = e
|
||||
)
|
||||
check eventually error == errorActual
|
||||
|
||||
test "does not fire onSuccess callback when Future[?!T] fails":
|
||||
test "does not fire other callbacks when successful":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
returnsResultValError()
|
||||
future
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
future.complete(success())
|
||||
|
||||
check eventually onSuccessCalled
|
||||
check always (not onCancelledCalled and not onCatchCalled)
|
||||
|
||||
test "does not fire other callbacks when fails":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
future
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
future.fail(error)
|
||||
|
||||
check eventually onCatchCalled
|
||||
check always (not onCancelledCalled and not onSuccessCalled)
|
||||
|
||||
test "does not fire other callbacks when cancelled":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
future
|
||||
.then(proc() = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
await future.cancelAndWait()
|
||||
|
||||
check eventually onCancelledCalled
|
||||
check always (not onSuccessCalled and not onCatchCalled)
|
||||
|
||||
test "can chain onSuccess when future completes":
|
||||
var onSuccessCalledTimes = 0
|
||||
discard future
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
.then(proc() = inc onSuccessCalledTimes)
|
||||
future.complete(success())
|
||||
check eventually onSuccessCalledTimes == 3
|
||||
|
||||
asyncchecksuite "then - Future[?!T]":
|
||||
var error = newError()
|
||||
var future: Future[?!int]
|
||||
|
||||
setup:
|
||||
future = newFuture[?!int]("test void")
|
||||
|
||||
teardown:
|
||||
if not future.finished:
|
||||
raiseAssert "test should finish future"
|
||||
|
||||
test "then callback is fired when future is already finished":
|
||||
var cbVal = 0
|
||||
future.complete(success(1))
|
||||
discard future.then(proc(val: int) = cbVal = val)
|
||||
check eventually cbVal == 1
|
||||
|
||||
test "then callback is fired after future is finished":
|
||||
var cbVal = 0
|
||||
discard future.then(proc(val: int) = cbVal = val)
|
||||
future.complete(success(1))
|
||||
check eventually cbVal == 1
|
||||
|
||||
test "catch callback is fired when future is already failed":
|
||||
var actual: ref CatchableError
|
||||
future.fail(error)
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
check eventually actual == error
|
||||
|
||||
test "catch callback is fired after future is failed":
|
||||
var actual: ref CatchableError
|
||||
future.catch(proc(err: ref CatchableError) = actual = err)
|
||||
future.fail(error)
|
||||
check eventually actual == error
|
||||
|
||||
test "cancelled callback is fired when future is already cancelled":
|
||||
var fired = false
|
||||
await future.cancelAndWait()
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
check eventually fired
|
||||
|
||||
test "cancelled callback is fired after future is cancelled":
|
||||
var fired = false
|
||||
discard future.cancelled(proc() = fired = true)
|
||||
await future.cancelAndWait()
|
||||
check eventually fired
|
||||
|
||||
test "does not fire other callbacks when successful":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
future
|
||||
.then(proc(val: int) = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
future.complete(success(1))
|
||||
|
||||
check eventually onSuccessCalled
|
||||
check always (not onCancelledCalled and not onCatchCalled)
|
||||
|
||||
test "does not fire other callbacks when fails":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
future
|
||||
.then(proc(val: int) = onSuccessCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = discard)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
check always (not onSuccessCalled)
|
||||
future.fail(error)
|
||||
|
||||
test "catch callback fired when Future[?!T] fails with uncaught error":
|
||||
var errorActual: ref CatchableError
|
||||
check eventually onCatchCalled
|
||||
check always (not onCancelledCalled and not onSuccessCalled)
|
||||
|
||||
returnsResultValErrorUncaught()
|
||||
.then(proc(val: int) = discard)
|
||||
.then(proc(val: int) = discard)
|
||||
.catch(proc(e: ref CatchableError) = errorActual = e)
|
||||
test "does not fire other callbacks when cancelled":
|
||||
var onSuccessCalled = false
|
||||
var onCancelledCalled = false
|
||||
var onCatchCalled = false
|
||||
|
||||
check eventually error == errorActual
|
||||
future
|
||||
.then(proc(val: int) = onSuccessCalled = true)
|
||||
.cancelled(proc() = onCancelledCalled = true)
|
||||
.catch(proc(e: ref CatchableError) = onCatchCalled = true)
|
||||
|
||||
await future.cancelAndWait()
|
||||
|
||||
check eventually onCancelledCalled
|
||||
check always (not onSuccessCalled and not onCatchCalled)
|
||||
|
||||
test "can chain onSuccess when future completes":
|
||||
var onSuccessCalledTimes = 0
|
||||
discard future
|
||||
.then(proc(val: int) = inc onSuccessCalledTimes)
|
||||
.then(proc(val: int) = inc onSuccessCalledTimes)
|
||||
.then(proc(val: int) = inc onSuccessCalledTimes)
|
||||
future.complete(success(1))
|
||||
check eventually onSuccessCalledTimes == 3
|
||||
|
|
|
|||
|
|
@ -0,0 +1,67 @@
|
|||
import pkg/asynctest
|
||||
import pkg/chronos
|
||||
import codex/utils/trackedfutures
|
||||
import ../helpers/eventually
|
||||
import ../helpers
|
||||
|
||||
type Module = object
|
||||
trackedFutures: TrackedFutures
|
||||
|
||||
asyncchecksuite "tracked futures":
|
||||
var module: Module
|
||||
|
||||
setup:
|
||||
module = Module(trackedFutures: TrackedFutures.new())
|
||||
|
||||
test "starts with zero tracked futures":
|
||||
check module.trackedFutures.len == 0
|
||||
|
||||
test "tracks unfinished futures":
|
||||
let fut = newFuture[void]("test")
|
||||
discard fut.track(module)
|
||||
check module.trackedFutures.len == 1
|
||||
|
||||
test "does not track completed futures":
|
||||
let fut = newFuture[void]("test")
|
||||
fut.complete()
|
||||
discard fut.track(module)
|
||||
check eventually module.trackedFutures.len == 0
|
||||
|
||||
test "does not track failed futures":
|
||||
let fut = newFuture[void]("test")
|
||||
fut.fail((ref CatchableError)(msg: "some error"))
|
||||
discard fut.track(module)
|
||||
check eventually module.trackedFutures.len == 0
|
||||
|
||||
test "does not track cancelled futures":
|
||||
let fut = newFuture[void]("test")
|
||||
await fut.cancelAndWait()
|
||||
discard fut.track(module)
|
||||
check eventually module.trackedFutures.len == 0
|
||||
|
||||
test "removes tracked future when finished":
|
||||
let fut = newFuture[void]("test")
|
||||
discard fut.track(module)
|
||||
fut.complete()
|
||||
check eventually module.trackedFutures.len == 0
|
||||
|
||||
test "removes tracked future when cancelled":
|
||||
let fut = newFuture[void]("test")
|
||||
discard fut.track(module)
|
||||
await fut.cancelAndWait()
|
||||
check eventually module.trackedFutures.len == 0
|
||||
|
||||
test "cancels and removes all tracked futures":
|
||||
let fut1 = newFuture[void]("test1")
|
||||
let fut2 = newFuture[void]("test2")
|
||||
let fut3 = newFuture[void]("test3")
|
||||
discard fut1.track(module)
|
||||
discard fut2.track(module)
|
||||
discard fut3.track(module)
|
||||
await module.trackedFutures.cancelTracked()
|
||||
check eventually fut1.cancelled
|
||||
check eventually fut2.cancelled
|
||||
check eventually fut3.cancelled
|
||||
check eventually module.trackedFutures.len == 0
|
||||
|
||||
|
||||
Loading…
Reference in New Issue