n8n/dist/concurrency/concurrency-queue.js

n8n Workflow Automation Tool

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConcurrencyQueue = void 0;
const di_1 = require("@n8n/di");
const typed_emitter_1 = require("../typed-emitter");
let ConcurrencyQueue = class ConcurrencyQueue extends typed_emitter_1.TypedEmitter {
    constructor(capacity) {
        super();
        this.capacity = capacity;
        this.queue = [];
    }
    async enqueue(executionId) {
        this.capacity--;
        this.debouncedEmit('concurrency-check', { capacity: this.capacity });
        if (this.capacity < 0) {
            this.emit('execution-throttled', { executionId });
            return new Promise((resolve) => this.queue.push({ executionId, resolve }));
        }
    }
    get currentCapacity() {
        return this.capacity;
    }
    dequeue() {
        this.capacity++;
        this.resolveNext();
    }
    remove(executionId) {
        const index = this.queue.findIndex((item) => item.executionId === executionId);
        if (index > -1) {
            this.queue.splice(index, 1);
            this.capacity++;
            this.resolveNext();
        }
    }
    getAll() {
        return new Set(this.queue.map((item) => item.executionId));
    }
    has(executionId) {
        return this.queue.some((item) => item.executionId === executionId);
    }
    resolveNext() {
        const item = this.queue.shift();
        if (!item)
            return;
        const { resolve, executionId } = item;
        this.emit('execution-released', executionId);
        resolve();
    }
};
exports.ConcurrencyQueue = ConcurrencyQueue;
exports.ConcurrencyQueue = ConcurrencyQueue = __decorate([
    (0, di_1.Service)(),
    __metadata("design:paramtypes", [Number])
], ConcurrencyQueue);
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