@russ-b/nestjs-common-tools/dist/logger/logger-builder.js

NestJS utility tools

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.LoggerBuilder = void 0;
const transport_factory_1 = require("./transport-factory");
const nest_winston_1 = require("nest-winston");
class LoggerBuilder {
    constructor(appName = 'NestApp', level = 'debug') {
        this.appName = appName;
        this.level = level;
        this.transports = [];
    }
    setLevel(level) {
        this.level = level;
        return this;
    }
    setAppName(appName) {
        this.appName = appName;
        return this;
    }
    addTransport(transportType, options) {
        const transport = this.createTransport(transportType, options);
        this.transports.push(transport);
        return this;
    }
    build() {
        if (!this.transports.length) {
            throw new Error('Should be at least one transport specified.');
        }
        return nest_winston_1.WinstonModule.createLogger({
            level: this.level,
            transports: this.transports,
        });
    }
    createTransport(type, options) {
        switch (type) {
            case 'json':
                return new transport_factory_1.JsonTransportFactory(this.level).createTransport();
            case 'loki':
                if (!options?.lokiUrl) {
                    throw new Error('lokiUrl is required for Loki transport');
                }
                return new transport_factory_1.LokiTransportFactory(this.level, options.lokiUrl, options.labels || { service: this.appName }).createTransport();
            case 'nest':
                return new transport_factory_1.NestTransportFactory(this.level, this.appName).createTransport();
            default:
                throw new Error(`Unknown transport type: ${type}`);
        }
    }
}
exports.LoggerBuilder = LoggerBuilder;
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