📚 GoBookAPI 📚

GoBookAPI is a sample RESTful JSON API written in Go, designed to manage books, provide user authentication/authorization using tokens, and execute various operations including adding, deleting, viewing, and updating books. The API utilizes a PostgreSQL database for data storage and retrieval.

Table of Contents

• Features
• File Structure
• Run Project Without Docker
• Run Project With Docker
• Usage Examples
• License

Features

• System Monitoring:

  • Logging
  • Metrics
  • Alerts
  • Healthcheck
  • Tracing
  • Error Handling

• Security:

  • CORS avoidance
  • IP-based rate limiting

• Authentication/Authorization:

  • Stateful token-based approach for secure authentication and authorization

• Data Management:

  • Book addition
  • Book deletion
  • Book updating
    • Partial data updates
  • Book retrieval
    • Parsing and validating query string parameters
    • Listing data
    • Filtering and full-text search
    • Sorting and paginating
    • Returning pagination metadata
  • Optimistic concurrency control

• Other:

  • Continuous integration (CI)
  • Docker (Containerization)

File Structure

GoBookAPI
├── Dockerfile
├── Makefile
├── README.md
├── cmd
│   └── api
│       ├── books.go
│       ├── context.go
│       ├── errors.go
│       ├── healthcheck.go
│       ├── helpers.go
│       ├── main.go
│       ├── middleware.go
│       ├── routes.go
│       ├── server.go
│       ├── tokens.go
│       └── users.go
├── docker-compose.yaml
├── go.mod
├── go.sum
├── internal
│   ├── data
│   │   ├── books.go
│   │   ├── filters.go
│   │   ├── models.go
│   │   ├── pages.go
│   │   ├── tokens.go
│   │   └── users.go
│   ├── jsonlog
│   │   └── jsonlog.go
│   └── validator
│       └── validator.go
└── migrations
    ├── 000001_create_books_table.down.sql
    ├── 000001_create_books_table.up.sql
    ├── 000002_add_books_check_constraints.down.sql
    ├── 000002_add_books_check_constraints.up.sql
    ├── 000003_add_books_indexes.down.sql
    ├── 000003_add_books_indexes.up.sql
    ├── 000004_create_users_table.down.sql
    ├── 000004_create_users_table.up.sql
    ├── 000005_create_tokens_table.down.sql
    └── 000005_create_tokens_table.up.sql

Instructions

There are two options:

1. You can run the project without docker.
2. You can run the project with docker.

1. Run Project Without Docker

Requirements

• Go
• PostgreSQL
• make
• go-migrate
• git
• Code Editor

Steps

• First, clone the repository:

git clone https://github.com/barantoraman/GoBookAPI.git

• Move into the directory:

cd GoBookAPI

• Create a PostgreSQL database with a named gobookapi.
• Create a POSTGRESQL superuser with named gobookapi.
• Set the password.
• Create the environment variables for databases:

export DB_DSN=YOUR_DATABASE_USER:YOUR_USER_PASS@/YOUR_DATABASE_NAME

• Edit the specified field in the Makefile that is related to the data source name, as per your requirement.

• Run the project:

make setup

• 🎉 Now you can test the endpoints as demonstrated in the Usage Examples section. 🎉

2. Run Project With Docker

Requirements

• Docker
• make
• make (for windows)
• git

Steps

• First, clone the repository:

git clone https://github.com/barantoraman/GoBookAPI.git

• Move into the directory:

cd GoBookAPI

• Build the containers using the configuration in docker-compose.yaml:

make docker/build

• Start the containers using the configuration in docker-compose.yaml:

make docker/run

• Stop the containers:

make docker/stop

Usage Examples

• Healthcheck:
  • Endpoint to perform a health check and ensure the application is running smoothly.

curl localhost:4000/v1/healthcheck

• Metrics:
  • Endpoint to retrieve application metrics for monitoring and analysis.

curl localhost:4000/debug/vars 

• Signup:
  • If you wish to use the other functionalities of the application and test its additional endpoints, you need to sign up. Otherwise, you'll receive a (HTTP) 401 Unauthorized response.

curl -d '{
  "name": "Eliza Thornberry",
  "email": "ethornberry@example.com",
  "password": "random-password123"
}' localhost:4000/v1/users

• Login:

curl -d '{
  "email": "ethornberry@example.com",
  "password": "random-password123"
}' localhost:4000/v1/tokens/authentication

• Add a Book:

curl -d '{
  "isbn": "0000000000001",
  "title": "Book1",
  "author": "Author1",
  "genres": ["genre1", "genre2", "genre3"],
  "pages": "100 pages",
  "language": "English",
  "publisher": "Publisher 1",
  "year": 1900
}' -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books"

• Update a Book:
  • Update all details of the book in the database.

curl -X PATCH -d '{
  "isbn": "0000000000001",
  "title": "Book1",
  "author": "Author1",
  "genres": ["genre1", "genre2", "genre3"],
  "pages": "100 pages",
  "language": "English",
  "publisher": "Publisher 1",
  "year": 1966
}' -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books/1"

• Partial Update: -Updating specific fields of the book's information.

curl -X PATCH -d '{
  "year": 1902
}' -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books/1"

• Delete a Book by id:

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
-X DELETE "localhost:4000/v1/books/4"

• Get All Book:

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books"

• Get All Book:
  • For example, in this scenario, there will be a single results page with 2 results on that page.

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?cursor=1&cursor_size=2"

• Searching example:
  • Searching for the desired book based on its features(Title + Author).

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?title=Book1&author=Author1"

• Searching example:
  • Searching for the desired book based on its features(Title).

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?title=Book1" 

• Searching example:
  • Searching for the desired book based on its features(ISBN + Title + Author).

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?isbn=0000000000001&title=Book1&author=Author1"

• Searching example:
  • Searching for the desired book based on its features(ISBN).

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?isbn=0000000000001"      

• Searching example:
  • Searching for the desired book based on its features(Genres).

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?genres=genre1"

• Searching example:
  • Searching for the desired book based on its features(Title).

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?title=new+book"

• Full Text Search (enough to contain the word):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?title=new"  

• Sort by ID (ASC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=id"

• Sort by ID (DESC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=-id"

• Sort by Title (ASC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=title"

• Sort by Title (DESC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=-title"

• Sort by Year (ASC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=year"

• Sort by Year (DESC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=-year"

• Sort by Author (ASC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=author"

• Sort by Author (DESC):

curl -H "Authorization: Bearer UPXA2GVIOIE6KWUWDTT5NG4SH4" \
"localhost:4000/v1/books?sort=-author"