container.ts/modules/log/Log.js

Modular application framework

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const container_1 = require("../../container");
// TODO: Validation library.
exports.ENV_LOG_LEVEL = "LOG_LEVEL";
class Log extends container_1.ContainerModule {
    get level() { return this._level; }
    constructor(name, opts, depends) {
        super(name, opts, depends);
        // Get log level from environment or fall back on default.
        const rawLevel = this.environment.get(exports.ENV_LOG_LEVEL) || "info";
        this._level = this.parseLevel(rawLevel);
        this.debug(`level '${container_1.ELogLevel[this.level]}'`);
        // Subscribe to container log messages filtered by level.
        this.container.filterLogs(this.level)
            .subscribe((log) => this.handleLog(log));
    }
    /** Convert environment log level string to level index, defaults to warning. */
    parseLevel(level) {
        switch ((level || "").toLowerCase()) {
            case "emerg":
            case "emergency": {
                return container_1.ELogLevel.Emergency;
            }
            case "alert": {
                return container_1.ELogLevel.Alert;
            }
            case "crit":
            case "critical": {
                return container_1.ELogLevel.Critical;
            }
            case "err":
            case "error": {
                return container_1.ELogLevel.Error;
            }
            case "warn":
            case "warning": {
                return container_1.ELogLevel.Warning;
            }
            case "notice": {
                return container_1.ELogLevel.Notice;
            }
            case "info":
            case "information":
            case "informational": {
                return container_1.ELogLevel.Informational;
            }
            case "debug": {
                return container_1.ELogLevel.Debug;
            }
            default: {
                return container_1.ELogLevel.Warning;
            }
        }
    }
}
exports.Log = Log;
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