vulcain-corejs/dist/commands/command/semaphore.js

Vulcain micro-service framework

"use strict";
class Semaphore {
    constructor(maxExecution, maxFallback) {
        this.maxExecution = maxExecution;
        this.maxFallback = maxFallback;
        this.currentExecution = 0;
        this.currentFallback = 0;
    }
    canExecuteCommand() {
        if (this.maxExecution !== 0 && this.currentExecution > this.maxExecution) {
            return false;
        }
        this.currentExecution++;
        return true;
    }
    releaseExecutionCommand() {
        this.currentExecution--;
    }
    canExecuteFallback() {
        if (this.maxFallback !== 0 && this.currentFallback > this.maxFallback) {
            return false;
        }
        this.currentFallback++;
        return true;
    }
    releaseFallback() {
        this.currentFallback--;
    }
}
exports.Semaphore = Semaphore;
class SemaphoreFactory {
    static getOrCreate(info) {
        let previouslyCached = SemaphoreFactory.semaphores.get(info.commandName);
        if (previouslyCached) {
            return previouslyCached;
        }
        let semaphore = new Semaphore(info.executionIsolationSemaphoreMaxConcurrentRequests.value, info.fallbackIsolationSemaphoreMaxConcurrentRequests.value);
        SemaphoreFactory.semaphores.set(info.commandName, semaphore);
        return semaphore;
    }
    static resetCache() {
        SemaphoreFactory.semaphores.clear();
    }
}
SemaphoreFactory.semaphores = new Map();
exports.SemaphoreFactory = SemaphoreFactory;

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