Logger for Node Applications

Create logger

import { createMBLogger, ILoggerOptions } from "mb-logger"

const loggerOptions: ILoggerOptions = {
    serviceName: "service_name",
    env: "development",
    transports: {}
};

const logger = createMBLogger(loggerOptions);

Usage

import { ICustomAttributes, sessionMiddleware, loggerMiddleware } from "mb-logger"

/* Custom logging fields can be added to the logger. These are field that are intercepted from request object and added to each log. The middleware needs to be added to application. */

const customOptions : ICustomAttributes = {
  include: {
    headers: ["user-agent"],
    body: [],
    meta: ["originalUrl", "baseUrl", "url",],
    resMeta: []
  },
  exclude: {
    params: ["emailID"],
    endPoints: ["/health"]
  }
}

// terminal logs
app.use(sessionMiddleware())

// request response logs
app.use(loggerMiddleware(logger))

implementation

https://docsapp.atlassian.net/wiki/spaces/LABS/pages/2722988037/LoggerService+node+Implementation+mb-logger

Output

error: service_name: 01-Dec-2022 01:41:24: Cannot read properties of null (reading 'a') :: {"stack":["TypeError: Cannot read properties of null (reading 'a')\n    at AppController.getOrders (/Users/shanawarhasnain/Documents/workspace/service_name/src/app.controller.ts:20:18)\n    at processTicksAndRejections (node:internal/process/task_queues:96:5)"],"user-agent":"PostmanRuntime/7.29.2","originalUrl":"/app/orders","url":"/app/orders","params":{},"method":"GET","hostname":"localhost","ip":"::1","x-mb-rid":"ba653089-f6c6-42a8-9678-fc31108a6445","customMessage":"Error message"}