Falcon REST API with PostgreSQL

Simple REST API using Falcon web framework.

Falcon is a high-performance Python framework for building cloud APIs, smart proxies, and app backends. More information can be found here.

Requirements

This project uses virtualenv as isolated Python environment for installation and running. Therefore, virtualenv must be installed. And you may need a related dependency library for a PostgreSQL database. See install.sh for details.

Installation

Install all the python module dependencies in requirements.txt

  ./install.sh

Start server

  ./bin/run.sh start

Deploy

You need to set APP_ENV environment variables before deployment. You can set LIVE mode in Linux/Heroku as follows.

Linux

In Linux, just set APP_ENV to run in live mode.

export APP_ENV=live
./bin/run.sh start

Heroku

In Heroku, use the command config:set. (See here for details)

heroku config:set APP_ENV=live

Usage

Create an user

• Request

curl -XPOST http://localhost:5000/v1/users -H "Content-Type: application/json" -d '{
 "username": "test1",
 "email": "test1@gmail.com",
 "password": "test1234"
}'

• Response

{
  "meta": {
    "code": 200,
    "message": "OK",
  },
  "data": null
}

Log in with email and password

• Request

curl -XGET http://localhost:5000/v1/users/self/login -H "Content-Type: application/json" -d '{
 "email": "test1@gmail.com",
 "password": "test1234"
}'

• Response

{
  "meta": {
    "code": 200,
    "message": "OK"
  },
  "data": {
    "username": "test1",
    "token": "gAAAAABV-TpG0Gk6LhU5437VmJwZwgkyDG9Jj-UMtRZ-EtnuDOkb5sc0LPLeHNBL4FLsIkTsi91rdMjDYVKRQ8OWJuHNsb5rKw==",
    "email": "test1@gmail.com",
    "created": 1442396742,
    "sid": "3595073989",
    "modified": 1442396742
  }
}

Check the validation of requested data

• Request

curl -XPOST http://localhost:5000/v1/users -H "Content-Type: application/json" -d '{
 "username": "t",
 "email": "test1@gmail.c",
 "password": "123"
}'

• Response

{
  "meta": {
    "code": 88,
    "message": "Invalid Parameter",
    "description": {
      "username": "min length is 4",
      "email": "value does not match regex '[a-zA-Z0-9._-]+@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,4}'",
      "password": [
        "value does not match regex '[0-9a-zA-Z]\\w{3,14}'",
        "min length is 8"
      ]
    }
  }
}

Get database rollback error in response for duplicated data

• Request

curl -XPOST http://localhost:5000/v1/users -H "Content-Type: application/json" -d '{
 "username": "test1",
 "email": "test1@gmail.com",
 "password": "test1234"
}'

• Response

{
  "meta": {
    "code": 77,
    "message": "Database Rollback Error",
    "description": {
      "details": "(psycopg2.IntegrityError) duplicate key value violates unique constraint \"user_email_key\"\nDETAIL:  Key (email)=(test1@gmail.com) already exists.\n",
      "params": "{'username': 'test1', 'token': 'gAAAAABV-UCq_DneJyz4DTuE6Fuw68JU7BN6fLdxHHIlu42R99sjWFFonrw3eZx7nr7ioIFSa7Akk1nWgGNmY3myJzqqbpOsJw==', 'sid': '6716985526', 'email': 'test1@gmail.com', 'password': '$2a$12$KNlGvL1CP..6VNjqQ0pcjukj/fC88sc1Zpzi0uphIUlG5MjyAp2fS'}"
    }
  }
}

Get a collection of users with auth token

• Request

curl -XGET http://localhost:5000/v1/users/100 -H "Authorization: gAAAAABV6Cxtz2qbcgOOzcjjyoBXBxJbjxwY2cSPdJB4gta07ZQXUU5NQ2BWAFIxSZlnlCl7wAwLe0RtBECUuV96RX9iiU63BP7wI1RQW-G3a1zilI3FHss="

• Response

{
  "meta": {
    "code": 200,
    "message": "OK"
  },
  "data": [
    {
      "username": "test1",
      "token": "gAAAAABV-UCAgRy-ee6t4YOLMW84tKr_eOiwgJO0QcAHL7yIxkf1fiMZfELkmJAPWnldptb3iQVzoZ2qJC6YlSioVDEUlLhG7w==",
      "sid": "2593953362",
      "modified": 1442398336,
      "email": "test1@gmail.com",
      "created": 1442398336
    },
    {
      "username": "test2",
      "token": "gAAAAABV-UCObi3qxcpb1XLV4GnCZKqt-5lDXX0YAOcME5bndZjjyzQWFRZKV1x54EzaY2-g5Bt47EE9-45UUooeiBM8QrpSjA==",
      "sid": "6952584295",
      "modified": 1442398350,
      "email": "test2@gmail.com",
      "created": 1442398350
    },
    {
      "username": "test3",
      "token": "gAAAAABV-UCccDCKuG28DbJrObEPUMV5eE-0sEg4jn57usBmIADJvkf3r5gP5F9rX5tSzcBhuBkDJwEJ1mIifEgnp5sxc3Z-pg==",
      "sid": "8972728004",
      "modified": 1442398364,
      "email": "test3@gmail.com",
      "created": 1442398364
    }
  ]
}