booking-app

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Booking

booking-app 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# booking-app
Building an online booking application to sell their
products.

#### Context Diagram
---
![Alt text](https://raw.githubusercontent.com/nguyenhuuca/booking-app/main/doc/image/Booking-Context.png)

#### Container Diagram
---
![Alt text](https://raw.githubusercontent.com/nguyenhuuca/booking-app/main/doc/image/Booking-Container.png)

#### Component Diagram
----
![Alt text](https://raw.githubusercontent.com/nguyenhuuca/booking-app/main/doc/image/Booking-component.png)

![Alt text](https://raw.githubusercontent.com/nguyenhuuca/booking-app/main/doc/image/Booking-component-audit.png)

#### Structure project
---

```
├───audit-service
│   ├───api // handler incoming request
│   ├───config
│   ├───db
│   ├───dto
│   ├───logic
│   ├───storage // maping entity
│   └───utils
├───booking-service
│   ├───api
│   ├───config
│   ├───db
│   │   └───migrations
│   ├───dto
│   ├───logic
│   ├───repo
│   ├───restclient
│   ├───storage
│   └───utils
├───doc
│   ├───image
│   └───planuml
└───webapp
    ├───assets
    ├───css
    └───js

```
#### Database diagram
---
![Alt text](https://raw.githubusercontent.com/nguyenhuuca/booking-app/main/doc/image/diagram.png)

In current solution. I only use single database for 2 service: booking-service and audit-service.
For best practice, We should split to 2 database independenly:
- bookingdb: branchs, product table.
- auditdb: audits.

#### Set up & Installation
---
##### Installation:
- Golang >= 1.20
- PostgresSQL
- Golang Migration CLI 
    ```
    go install -tags 'postgres' github.com/golang-migrate/migrate/v4/cmd/migrate@latest
    ```

- Creat database with name **bookingdb**
- Download all package for **booking service**
     ```
    cd booking-service
    go mod tidy
    ```
- Run migration data, change database server info on your machine.
    ```
    migrate -database postgres://{user}:{pass}@{host}/bookingdb?sslmode=disable -path db/migrations up
    ```
    *In case You do not use migration cli, please run manualy all script in db/migrations*
    
- Download all package for **audit service**
    ```
    cd audit-service
    go mod tidy
    ```

##### Running App on LocalHost:
1. **Booking-service**
- Change file booking-service/.env.example to booking-service/.env and change database info for postgres sql:
    ```
    DATABASE_URL=postgres://{user}:{pass}@{host}:5432/bookingdb
    AUDIT_SERVICE=http://localhost:8081
    PORT=8080
    ```
    *Note that: In case we do not config AUDIT_SERVICE enviroiment parameter, the booking-savice will save audit info to database directly without call audit-service api*.

- Start booking-service:
    ```
    go run main.go 
    ```
2. **Audit-service**
- Change file booking-service/.env.example to booking-service/.env and change database info for postgres sql:
    ```
    DATABASE_URL=postgres://{user}:{pass}@{host}:5432/bookingdb
    ```
- Start audit-service:
    ```
    go run main.go 
    ```

3. **Run web**
   - Open webapp/index.html
   - Result:
  ![Alt text](https://raw.githubusercontent.com/nguyenhuuca/booking-app/main/doc/image/web.png)

4. **Unit test**
   - Some test case was implemented in booking-service/logic:
    ```
    cd booking-service/logic
    go test -v
    ```

#### Technical sumamry
---

1. **Database**
   - Using PostgresSQL for reason: 
     - It was used popular
     - Support dynamic type as json, can query with json format
     - Relational database.
2. **Arch**
   - Apply micro-service arch for easy to scale, and easy to maintaince, and also we are clearly the boundary context: booking and audit.
3. **Application**
   - Only focus one thing: make the application/service become abstraction as much as posiple:
     - Follow SOLID principle to implement service
     - Apply DI for easy to maintain and testing

#### Open source lib to use:
---
    Gorm: MIT License
    Gin: MIT License
    DotEnv: MIT License

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