smart-saga-pattern/dist/core/Transaction.js

A library implementing the Saga pattern for microservice architecture

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Transaction = void 0;
const types_1 = require("../types");
/**
 * Represents a transaction step in a Saga
 */
class Transaction {
    /**
     * Creates a new Transaction
     * @param id Transaction ID
     * @param name Transaction name
     * @param action Function to execute for this transaction
     */
    constructor(id, name, action) {
        this.result = null;
        this.error = null;
        this.id = id;
        this.name = name;
        this.status = types_1.TransactionStatus.PENDING;
        this.action = action;
    }
    /**
     * Gets the ID of the transaction
     */
    getId() {
        return this.id;
    }
    /**
     * Gets the name of the transaction
     */
    getName() {
        return this.name;
    }
    /**
     * Gets the status of the transaction
     */
    getStatus() {
        return this.status;
    }
    /**
     * Gets the result of the transaction
     */
    getResult() {
        return this.result;
    }
    /**
     * Gets the error of the transaction if it failed
     */
    getError() {
        return this.error;
    }
    /**
     * Executes the transaction
     * @param context Context to pass to the transaction function
     * @param requiresCompensation Whether this transaction requires compensation in case of failure
     */
    async execute(context, requiresCompensation = true) {
        try {
            this.status = types_1.TransactionStatus.EXECUTING;
            // Create metadata for the transaction
            const metadata = {
                id: this.id,
                name: this.name,
                startTime: Date.now(),
                requiresCompensation,
            };
            // Execute the transaction with metadata
            this.result = await this.action(context, metadata);
            // Update metadata with end time
            metadata.endTime = Date.now();
            this.status = types_1.TransactionStatus.COMPLETED;
            return this.result;
        }
        catch (error) {
            this.status = types_1.TransactionStatus.FAILED;
            this.error = error instanceof Error ? error : new Error(String(error));
            throw this.error;
        }
    }
    /**
     * Resets the transaction to its initial state
     */
    reset() {
        this.status = types_1.TransactionStatus.PENDING;
        this.result = null;
        this.error = null;
    }
}
exports.Transaction = Transaction;