> For the complete documentation index, see [llms.txt](https://tkssharma-devops.gitbook.io/devops-training/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tkssharma-devops.gitbook.io/devops-training/microservices/microservices-architecture/hand-on-or-building-microservices.md).

# Hand-on | Building Microservices

### Simple development of different microservices using Docker 

{% embed url="<https://github.com/tkssharma/e-CommerseHub>" %}

## Application for e-commerce Hub

REST API to support application features

* Express as web framework with Typescript
* Passport js for social authentication
* Express CORS enabled
* boom for error codes & Joi for Validation
* Winston for logging and express minitor for monitoring
* Mongoose as ODM driver
* eslint validation extending airbnb styleguide
* git hooks & CI/CD in place
* Typescript based compilation tsc compiler
* TDD in progress with Mocha
* JWT based authentication
* multiple Mongoose collection with referencing
* payment gateway Integration
* Heroku deployment
* Mini e-commerce platform

## Cart Application

"It's just simple application to provide REST APIs for mini e-commerce platform where individual can buy products and can pay the bills

* microservices architecture
* Client application in React
* User Auth microservices
* Cart services
* Admin Microservices

![](/files/-LmcerfLlUFxBY5bAzm9)

[![deividing services](https://github.com/tkssharma/e-CommerseHub/raw/master/screens/02.png)](https://github.com/tkssharma/e-CommerseHub/blob/master/screens/02.png)[![Micro services with Node JS](https://github.com/tkssharma/e-CommerseHub/raw/master/screens/03.png)](https://github.com/tkssharma/e-CommerseHub/blob/master/screens/03.png)

````
# Application Execution
```javascript
git clone  repo
npm install
npm run startdev
tsc -- watch
````

## Application configuration

```
env.sh need to be added locally 
export NODE_ENV="dev"
export PORT="3005"
export MONGOURL="mongodb://mongo/hello"
export EXPRESS_SESSION_SECRET="************************"
export F_CLIENTID="**************"
export F_CLIENTSECRET="**********************"
```

## update etc/hosts file

```
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1       localhost
255.255.255.255 broadcasthost
::1             localhost
127.0.0.1       mysql redis mongo
127.0.0.1       ms-commerce.com
```

## Sevices end-point

* <http://ms-commerce.com/api/v1> Auth services
* <http://ms-commerce.com/admin/v1> Admin APIs
* <http://ms-commerce.com/admin/v1> Cart APIs

## Application NPM Script

```
"start": "cd dist &&  nodemon server.js",
"prestart": "tsc && cp -r uploads dist/ && cp -r app/global dist/app/",
"clean" : "rm -rf dist",
"copy" : "cp -r uploads dist/ && cp -r app/global dist/app/"

```