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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 | 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 266x 12x 111x 110x 105x 104x 1x 90x 90x 4x 4x 4x 2x 2x 5x 1x 4x 4x 4x 4x 4x 4x 25x 3x 3x 1x 1x 4x 4x 4x 4x 118x 2x 2x 2x 2x 1x 1x 1x 1x 4x 1x 3x 3x 3x 3x 3x 3x 3x 2x 3x 6x 2x 2x 2x 2x 1x 1x 3x 3x 3x 3x 5x 4x 4x 4x 4x 4x 4x 4x 19x 8x 11x 5x 4x 4x 4x 4x 4x 4x 266x 266x 266x 9x 121x 121x 111x 111x 39x 104x 3x 5x 1x 266x 266x 266x | import { ConcurrencyException } from "@jonloucks/concurrency-ts/api/ConcurrencyException";
import { Duration, OptionalType, RequiredType } from "@jonloucks/concurrency-ts/api/Types";
import { Config, Waitable } from "@jonloucks/concurrency-ts/api/Waitable";
import { Consumer, fromType as consumerFromType, Type as ConsumerType } from "@jonloucks/concurrency-ts/auxiliary/Consumer";
import { Predicate, fromType as predicateFromType, Type as PredicateType } from "@jonloucks/concurrency-ts/auxiliary/Predicate";
import { Supplier, fromType as supplierFromType, Type as SupplierType } from "@jonloucks/concurrency-ts/auxiliary/Supplier";
import { AtomicBoolean, AtomicReference, createAtomicBoolean, createAtomicReference } from "@jonloucks/contracts-ts/auxiliary/Convenience";
import { IllegalStateException } from "@jonloucks/contracts-ts/auxiliary/IllegalStateException";
import { AutoClose, AUTO_CLOSE_NONE, Close, inlineAutoClose } from "@jonloucks/contracts-ts/api/AutoClose";
import { ExposedPromise } from "./ExposedPromise";
import { create as createExposedPromise } from "./ExposedPromise.impl";
import { Internal } from "./Internal.impl";
/**
* Create a new Waitable
*
* @return the new Waitable
*/
export function create<T>(config?: Config<T>): Waitable<T> {
return WaitableImpl.internalCreate(config);
}
// ---- Implementation details below ----
interface ValueObserver<T> extends Close {
observeValue(value: OptionalType<T>): void;
};
const CLOSED_EXCEPTION: ConcurrencyException = new ConcurrencyException("Waitable is closed.");
class WaitableImpl<T> implements Waitable<T> {
open(): AutoClose {
if (this.#isOpen.compareAndSet(false, true)) {
return inlineAutoClose((): void => {
if (this.#isOpen.compareAndSet(true, false)) {
this.closeAllListeners();
}
});
} else {
return AUTO_CLOSE_NONE;
}
};
// WaitableSupplier.supply implementations
supply(): T {
const value = this.#reference.get();
// if (value === undefined || value === null) {
// throw new IllegalStateException("No value is currently available in Waitable.");
// }
return value as T;
}
// WaitableSupplier.supplyIf implementation
supplyIf(predicate: PredicateType<T>): OptionalType<T> {
const validPredicate: Predicate<OptionalType<T>> = predicateFromType(predicate);
const currentValue: OptionalType<T> = this.#reference.get();
if (validPredicate.test(currentValue)) {
return currentValue;
} else {
return undefined;
}
}
// WaitableSupplier.supplyWhen implementation
async supplyWhen(predicate: RequiredType<PredicateType<T>>, timeout?: Duration): Promise<T> {
if (!this.isOpen()) {
return Promise.reject(CLOSED_EXCEPTION);
}
const validPredicate: Predicate<OptionalType<T>> = predicateFromType(predicate);
const firstNotify: AtomicBoolean = createAtomicBoolean(true);
const exposedPromise: ExposedPromise<T> = createExposedPromise();
const removeListener = (v: ValueObserver<T>): void => {
this.#valueObservers.delete(v);
};
const valueObserver: ValueObserver<T> = {
observeValue: function (value: T): void {
if (validPredicate.test(value) && firstNotify.getAndSet(false)) {
removeListener(this);
exposedPromise.resolve(value);
}
},
close: function (): void {
removeListener(this);
exposedPromise.reject(CLOSED_EXCEPTION);
}
};
// maybe have the timeout delete the observer as well
const returnPromise: Promise<T> = Internal.wrapPromiseWithTimeout<T>(
exposedPromise.getPromise(),
timeout
);
this.#valueObservers.add(valueObserver);
valueObserver.observeValue(this.supply());
return returnPromise;
}
// WaitableConsumer.consume implementations
consume(value: SupplierType<T>): void {
this.setValue(supplierFromType(value).supply());
}
// WaitableConsumer.consumeIf implementation
consumeIf(predicate: RequiredType<PredicateType<T>>, value: SupplierType<T>): OptionalType<T> {
const validPredicate: Predicate<OptionalType<T>> = predicateFromType(predicate);
const validValueSupplier: Supplier<T> = supplierFromType(value);
const currentValue: OptionalType<T> = this.#reference.get();
if (validPredicate.test(currentValue)) {
const newValue: T = validValueSupplier.supply();
this.setValue(newValue);
return newValue;
} else {
return undefined;
}
}
// WaitableConsumer.consumeWhen implementation
async consumeWhen(predicate: RequiredType<PredicateType<T>>, value: SupplierType<T>, timeout?: Duration): Promise<OptionalType<T>> {
if (!this.isOpen()) {
return Promise.reject(CLOSED_EXCEPTION);
}
const validPredicate: Predicate<OptionalType<T>> = predicateFromType(predicate);
const validValueSupplier: Supplier<T> = supplierFromType(value);
const firstNotify: AtomicBoolean = createAtomicBoolean(true);
const exposedPromise: ExposedPromise<OptionalType<T>> = createExposedPromise();
const removeListener = (v: ValueObserver<T>): void => {
this.#valueObservers.delete(v);
};
const setTheValue: (T: OptionalType<T>) => void = (v: OptionalType<T>): void => {
this.setValue(v);
};
const valueObserver: ValueObserver<T> = {
observeValue: function (value: T): void {
if (validPredicate.test(value) && firstNotify.getAndSet(false)) {
const suppliedValue: OptionalType<T> = validValueSupplier.supply();
setTheValue(suppliedValue);
removeListener(this);
exposedPromise.resolve(suppliedValue);
}
},
close: function (): void {
removeListener(this);
exposedPromise.reject(CLOSED_EXCEPTION);
}
};
const returnPromise: Promise<OptionalType<T>> = Internal.wrapPromiseWithTimeout<OptionalType<T>>(
exposedPromise.getPromise(),
timeout
);
this.#valueObservers.add(valueObserver);
valueObserver.observeValue(this.supply());
return returnPromise;
}
// WaitableNotify.notifyWhile implementation
notifyWhile(predicate: RequiredType<PredicateType<T>>, listener: RequiredType<ConsumerType<T>>): RequiredType<AutoClose> {
this.assertOpen();
const validPredicate: Predicate<OptionalType<T>> = predicateFromType(predicate);
const notifyCallback: Consumer<T> = consumerFromType(listener);
const firstClose: AtomicBoolean = createAtomicBoolean(true);
const isLive: AtomicBoolean = createAtomicBoolean(true);
const removeListener = (v: ValueObserver<T>): void => {
this.#valueObservers.delete(v);
};
const valueObserver: ValueObserver<T> = {
observeValue: function (value: T): void {
if (!isLive.get() || !validPredicate.test(value)) {
return;
}
notifyCallback.consume(value);
},
close: function (): void {
if (firstClose.compareAndSet(true, false)) {
isLive.set(false);
removeListener(this);
}
}
};
this.#valueObservers.add(valueObserver);
valueObserver.observeValue(this.supply());
return inlineAutoClose((): void => {
valueObserver.close();
});
}
static internalCreate<T>(config?: RequiredType<Config<T>>): RequiredType<Waitable<T>> {
return new WaitableImpl(config);
}
private constructor(config?: Config<T>) {
const actualConfig = config ? config : {};
this.#reference = createAtomicReference<OptionalType<T>>(actualConfig.initialValue);
}
private isOpen(): boolean {
return this.#isOpen.get();
}
private setValue(newValue: OptionalType<T>): void {
const oldValue: OptionalType<T> = this.#reference.getAndSet(newValue);
if (oldValue !== newValue) {
this.notifyListeners(newValue);
}
}
private notifyListeners(newValue: OptionalType<T>): void {
for (const valueObserver of this.#valueObservers) {
valueObserver.observeValue(newValue);
}
}
private closeAllListeners(): void {
for (const valueObserver of this.#valueObservers) {
valueObserver.close();
}
}
private assertOpen(): void {
if (!this.#isOpen.get()) {
throw new IllegalStateException("Waitable must be open.");
}
}
readonly #isOpen: AtomicBoolean = createAtomicBoolean(false)
readonly #reference: AtomicReference<OptionalType<T>>;
readonly #valueObservers: Set<ValueObserver<unknown>> = new Set<ValueObserver<unknown>>();
} |