Parameterized-RestServer

how to use it

1. clone the repo
2. run the installation of node modules in your console it should install the dependencies in your root folder

npm i

3. starting the servers

node restServer configComputers.json

node restServer configBook

node restServer configPerson

you can run all 3 servers simultanuously

4. open the restTester.html in your browser

Then you have the option to check the route when you select "get" and press submit, you can see which server runs on the address localhost:xxxx/api/

when you write it to the route, and hit get again, it will show you all data of that route

computers runs on port:4000
persons runs on port:4001
books runs on port:4002

5. now you can test several methods for each server

hit get and copy one object to the JSON body field and try it with submit

put will update an object post will post a new object delete will delete an object

---

Study notes:

Parameterized version of the server

Rest Server:

copy all the storageLayer, server, and storage files from previous project, then modify

here update config json with storages and folders

{
    "port":4000,
    "host":"localhost",
    "engineFolder":"storageEngines",
    "storageFolder":"storages",
    "storageEngine":{
        "folder":"storageLayer",
        "dataStorageFile":"dataStorageLayer.js"
    },
        "storage":{
            "folder":"computerStorage",
            "storageConfigFile":"storageConfig.json"
        }
}

Filename: storageConfig.json needs to match the one in the config.json

{
    "storageFile":"computers.json",
    "adapterFile":"computerAdapter.js",
    "primaryKey":"id",
    "resource":"computers"
}

storage Layer

we need to create a class with a constructor, that takes the storageConfig.json values as parameters to use in the functions

I am taking that to the storageConfig

requiring that file to this adapt -- from the adapter function

// copied functions updated with this.# // replace storageFilePath with this.#storageFilePath

dataStorage

for the persons:

then create a new file: configPerson

{
    "port":4001,
    "host":"localhost",
    "engineFolder":"storageEngines",
    "storageFolder":"storages",
    "storageEngine":{
        "folder":"storageLayer",
        "dataStorageFile":"dataStorageLayer.js"
    },
        "storage":{
            "folder":"personStorage",
            "storageConfigFile":"storageConfig.json"
        }
}

create commandLineArguments

console.log(process);
console.log(process.argv);

contains operating system and lots of useful things

after running you can pass whatever ypou write in the command line:

 node commandLineArguments.js 1 2 3 4 5

node commandLineArguments.js 1 2 3 4 5
[
  '/usr/local/bin/node',
  '/Users/s2400789/Documents/BC_Studies/12_Node-Advanced/week4/param-Version/commandLineArguments.js',
  '1',
  '2',
  '3',
  '4',
  '5'

node commandLineArguments.js 12345
[
  '/usr/local/bin/node',
  '/Users/s2400789/Documents/BC_Studies/12_Node-Advanced/week4/param-Version/commandLineArguments.js',
  '12345'
]

 node commandLineArguments.js 1 2 3 jhkjhk "this is a
string"
[
  '/usr/local/bin/node',
  '/Users/s2400789/Documents/BC_Studies/12_Node-Advanced/week4/param-Version/commandLineArguments.js',
  '1',
  '2',
  '3',
  'jhkjhk',
  'this is a string'
]

console.log("length", process.argv.length);

 node commandLineArguments.js 1 2 3 jhkjhk "this is a string"
length 7

we get everything as a string and we can get rid of the first 2 arguments that contain: argv[0] => program name (node) argv[1] => filepath

const [, , ...values] = process.argv;
console.log(values);

node commandLineArguments.js 1 2 3 jhkjhk "this is a string"
[ '1', '2', '3', 'jhkjhk', 'this is a string' ]

console.log('+++++++++++++');
for (let i = 0; i < values.length; i++) {
    console.log(`argv[${i}] = ${process.argv[i]}`);
}

console.log('values');
for (let i = 0; i < values.length; i++) {
    console.log(`values[${i}] = ${values[i]}`);
}

creating a test server

"use strict";

const path = require("path");

const [, , configFileName] = process.argv;

if (process.argv.length < 3) {
  console.log("Please provide a parameter");
} else {
  const config = require(path.join(__dirname, configFileName));
  console.log(config); // if you dont giv the name it will not run
}

we pass the config to our server and we can use it in the server

use it

now we can see the files:

node testServer.js configPerson.json;

we need to change the restServer to run it from command line

but then you can provide your argument for starting the server via console. Cool!

then

put the testServer.js code to the restServer.js

This can now run several servers at a time from the same file

Not functioning: get keys computers keys : empty array