@message-in-the-middle/core/dist/cjs/middlewares/metrics.middleware.js

Framework-agnostic middleware pattern for message queue processing. Core package with all middlewares.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MetricsOutboundMiddleware = exports.MetricsInboundMiddleware = void 0;
class MetricsInboundMiddleware {
    metricsCollector;
    prefix;
    constructor(metricsCollector, options = {}) {
        this.metricsCollector = metricsCollector;
        this.prefix = options.prefix ?? 'sqs.inbound';
    }
    async process(context, next) {
        const startTime = Date.now();
        this.metricsCollector.increment(`${this.prefix}.received`);
        try {
            await next();
            const duration = Date.now() - startTime;
            this.metricsCollector.timing(`${this.prefix}.processing_time`, duration);
            this.metricsCollector.increment(`${this.prefix}.success`);
            context.metadata.processingTime = duration;
        }
        catch (error) {
            const duration = Date.now() - startTime;
            this.metricsCollector.timing(`${this.prefix}.processing_time`, duration);
            this.metricsCollector.increment(`${this.prefix}.error`, {
                error_type: error.name,
            });
            throw error;
        }
    }
}
exports.MetricsInboundMiddleware = MetricsInboundMiddleware;
class MetricsOutboundMiddleware {
    metricsCollector;
    prefix;
    constructor(metricsCollector, options = {}) {
        this.metricsCollector = metricsCollector;
        this.prefix = options.prefix ?? 'sqs.outbound';
    }
    async processOutbound(context, next) {
        const startTime = Date.now();
        const messageSize = JSON.stringify(context.message).length;
        this.metricsCollector.increment(`${this.prefix}.sent`);
        this.metricsCollector.gauge(`${this.prefix}.message_size`, messageSize);
        try {
            await next();
            const duration = Date.now() - startTime;
            this.metricsCollector.timing(`${this.prefix}.send_time`, duration);
            this.metricsCollector.increment(`${this.prefix}.success`);
        }
        catch (error) {
            this.metricsCollector.increment(`${this.prefix}.error`, {
                error_type: error.name,
            });
            throw error;
        }
    }
}
exports.MetricsOutboundMiddleware = MetricsOutboundMiddleware;
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