Simple Log Service:Install Simple Log Service SDK for Node.js

Usage notes

Simple Log Service SDK for Node.js is developed based on JavaScript. TypeScript is not supported.

Installation

1. Create a project directory and go to the directory.

2. Run the following initialization command:

   npm init

   Set the name parameter to sls_node and retain default values for other parameters. After the initialization is complete, a file named package.json is created. Example:

   {
     "name": "sls_node",
     "version": "1.0.0",
     "description": "",
     "main": "index.js",
     "scripts": {
       "test": "echo \"Error: no test specified\" && exit 1"
     },
     "author": "",
     "license": "ISC"
   }

3. Run the following command to install Simple Log Service SDK for Node.js:

   npm install @alicloud/log

   After the command is run, the package.json file is injected with @alicloud/log information. Example:

   {
     "name": "sls_node",
     "version": "1.0.0",
     "description": "",
     "main": "index.js",
     "scripts": {
       "test": "echo \"Error: no test specified\" && exit 1"
     },
     "author": "",
     "license": "ISC",
     "dependencies": {
       "@alicloud/log": "^1.2.5"
     }
   }

4. Create a project. In the following example, Express is used to create a project.

   1. Run the following command to install Express:

      npm install express

      For more information, see Installing.

   2. Run the following command to install morgan:

      npm install morgan

      For more information, see morgan.

   3. Create a file named app.js and add the following code to the file:

      var express = require('express')
      var morgan = require('morgan')
      var app = express()
      const logger = morgan(function (tokens, req, res) {
        return [
          tokens.method(req, res),
          tokens.url(req, res),
          tokens.status(req, res),
          tokens.res(req, res, 'content-length'), '-',
          tokens['response-time'](req, res), 'ms'
        ].join(' ')
      })
      app.use(logger)
      app.get('/', (req, res) => res.send('Hello World!'))
      app.listen(3000, () => console.log('Example app listening on port 3000!'))

   4. Run the following command to start the project:

      node app.js

   After the project is created, the following result is returned:

   Example app listening on port 3000!

FAQ

What do I do if the ../xx/jsSHA/src/sha.js file is not found?

The file of the dependent module is deleted. We recommend that you run the npm install aliyun-sdk command to reinstall the SDK. When you reinstall the SDK, the missing file is automatically retrieved.