MqttDispatcher/dist/callchain.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const log = require("./log");
const events = require("events");
class LastChainItem {
    begin() {
    }
    send(message) {
        log.info(`Last chain item, final result ${JSON.stringify(message)}`);
    }
}
let lastChainItem = new LastChainItem();
class AChainItem extends events.EventEmitter {
    constructor(label) {
        super();
        this.label = label;
        this.next = lastChainItem;
    }
    toString() {
        return `<${this.label}>`;
    }
    registerNext(next) {
        this.next = next;
    }
    send(message) {
        this.emit('yourturn', message);
    }
}
exports.AChainItem = AChainItem;
class AAsyncBaseChainItem extends AChainItem {
    constructor(label) {
        super(label);
    }
    begin() {
        if (this.next != null) {
            this.next.begin();
        }
        this.addListener('yourturn', (message) => {
            log.info(`Calling ${this.toString()}`);
            this.func(message, this.next.send);
        });
    }
}
exports.AAsyncBaseChainItem = AAsyncBaseChainItem;
class ABaseChainItem extends AChainItem {
    constructor(label) {
        super(label);
    }
    begin() {
        if (this.next != null) {
            this.next.begin();
        }
        this.addListener('yourturn', (message) => {
            log.info(`Calling ${this.toString()}`);
            let result = this.func(message);
            this.next.send(result);
        });
    }
}
exports.ABaseChainItem = ABaseChainItem;
class ChainItem extends ABaseChainItem {
    toString() {
        let funcName = (this.chainItemFunc.name === "") ? "lambda" : this.chainItemFunc.name;
        return `<${funcName}, ${this.label}>`;
    }
    registerFunc(func) {
        this.chainItemFunc = func;
    }
    func(message) {
        return this.chainItemFunc(message);
    }
}
exports.ChainItem = ChainItem;
//# sourceMappingURL=callchain.js.map