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Subscribe & Presence Event Engine (#152)
feat(subscribe & presence): introducing Subscribe & Presence EventEngine
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@@ -19,4 +19,4 @@ SPEC CHECKSUMS: | |
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| PODFILE CHECKSUM: 61a40240486621bb01f596fdd5bc632504940fab | ||
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| COCOAPODS: 1.12.1 | ||
| COCOAPODS: 1.14.3 | ||
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| @@ -1,6 +1,6 @@ | ||
| Pod::Spec.new do |s| | ||
| s.name = 'PubNubSwift' | ||
| s.version = '6.2.3' | ||
| s.version = '6.3.0' | ||
| s.homepage = 'https://github.com/pubnub/swift' | ||
| s.documentation_url = 'https://www.pubnub.com/docs/swift-native/pubnub-swift-sdk' | ||
| s.authors = { 'PubNub, Inc.' => '[email protected]' } | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,113 @@ | ||
| // | ||
| // Dispatcher.swift | ||
| // | ||
| // Copyright (c) PubNub Inc. | ||
| // All rights reserved. | ||
| // | ||
| // This source code is licensed under the license found in the | ||
| // LICENSE file in the root directory of this source tree. | ||
| // | ||
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| import Foundation | ||
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| // MARK: - DispatcherListener | ||
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| struct DispatcherListener<Event> { | ||
| let onAnyInvocationCompleted: (([Event]) -> Void) | ||
| } | ||
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| // MARK: - Dispatcher | ||
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| protocol Dispatcher<Invocation, Event, Dependencies> { | ||
| associatedtype Invocation: AnyEffectInvocation | ||
| associatedtype Event | ||
| associatedtype Dependencies | ||
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| func dispatch( | ||
| invocations: [EffectInvocation<Invocation>], | ||
| with dependencies: EventEngineDependencies<Dependencies>, | ||
| notify listener: DispatcherListener<Event> | ||
| ) | ||
| } | ||
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| // MARK: - EffectDispatcher | ||
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| class EffectDispatcher<Invocation: AnyEffectInvocation, Event, Dependencies>: Dispatcher { | ||
| private let factory: any EffectHandlerFactory<Invocation, Event, Dependencies> | ||
| private let effectsCache = EffectsCache<Event>() | ||
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| init(factory: some EffectHandlerFactory<Invocation, Event, Dependencies>) { | ||
| self.factory = factory | ||
| } | ||
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| func hasPendingInvocation(_ invocation: Invocation) -> Bool { | ||
| effectsCache.hasPendingEffect(with: invocation.id) | ||
| } | ||
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| func dispatch( | ||
| invocations: [EffectInvocation<Invocation>], | ||
| with dependencies: EventEngineDependencies<Dependencies>, | ||
| notify listener: DispatcherListener<Event> | ||
| ) { | ||
| invocations.forEach { | ||
| switch $0 { | ||
| case .managed(let invocation): | ||
| executeEffect( | ||
| effect: factory.effect(for: invocation, with: dependencies), | ||
| storageId: invocation.id, | ||
| notify: listener | ||
| ) | ||
| case .regular(let invocation): | ||
| executeEffect( | ||
| effect: factory.effect(for: invocation, with: dependencies), | ||
| storageId: UUID().uuidString, | ||
| notify: listener | ||
| ) | ||
| case .cancel(let cancelInvocation): | ||
| effectsCache.getEffect(with: cancelInvocation.id)?.cancelTask() | ||
| effectsCache.removeEffect(id: cancelInvocation.id) | ||
| } | ||
| } | ||
| } | ||
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| private func executeEffect( | ||
| effect: some EffectHandler<Event>, | ||
| storageId id: String, | ||
| notify listener: DispatcherListener<Event> | ||
| ) { | ||
| effectsCache.put(effect: effect, with: id) | ||
| effect.performTask { [weak effectsCache] results in | ||
| effectsCache?.removeEffect(id: id) | ||
| listener.onAnyInvocationCompleted(results) | ||
| } | ||
| } | ||
| } | ||
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| // MARK: - EffectsCache | ||
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| fileprivate class EffectsCache<Event> { | ||
| private var managedEffects: Atomic<[String: EffectWrapper<Event>]> = Atomic([:]) | ||
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| func hasPendingEffect(with id: String) -> Bool { | ||
| managedEffects.lockedRead { $0[id] } != nil | ||
| } | ||
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| func put(effect: some EffectHandler<Event>, with id: String) { | ||
| managedEffects.lockedWrite { $0[id] = EffectWrapper<Event>(id: id, effect: effect) } | ||
| } | ||
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| func getEffect(with id: String) -> (any EffectHandler<Event>)? { | ||
| managedEffects.lockedRead() { $0[id] }?.effect | ||
| } | ||
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| func removeEffect(id: String) { | ||
| managedEffects.lockedWrite { $0[id] = nil } | ||
| } | ||
| } | ||
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| // MARK: - EffectWrapper | ||
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| fileprivate struct EffectWrapper<Action> { | ||
| let id: String | ||
| let effect: any EffectHandler<Action> | ||
| } |
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