Simple Server

data.json

{
    "error": "e200",
    "message": [
        {"code": 1, "message": "message number one"},
        {"code": 2, "message": "message number two"},
        {"code": 3, "message": "message number ..."},
        {"code": 4, "message": "message number ..."},
        {"code": 5, "message": "message number ..."}
    ]
}

Makefile

run:
	python simple_server.py

simple_server.py

import json
import socketserver
from http.server import SimpleHTTPRequestHandler
from pathlib import Path

cnx = ('0.0.0.0', 8000)

response = {
    'error': 'e100',
    'message': [
        {'code': 1, 'message': 'message number one'},
        {'code': 2, 'message': 'message number two'},
    ]
}

root = Path(__file__).parent
external_data = root.joinpath('data.json')


class SimpleRequest(SimpleHTTPRequestHandler):
    def do_GET(self):
        try:
            status = 200
            if external_data.is_file():
                with external_data.open('rb') as f:
                    output = f.read()
            else:
                output = response
        except Exception as e:
            status = 400
            output = {'error': str(e)}

        if isinstance(output, dict):
            output = json.dumps(output).encode()

        self.send_response(status)
        self.send_header('Content-type', 'application/javascript')
        self.end_headers()

        self.wfile.write(output)
        return


def main():
    print(f'Simple Server starting in {":".join([str(i) for i in cnx])}.')

    x = socketserver.TCPServer(cnx, SimpleRequest)
    x.allow_reuse_address = True

    try:
        x.serve_forever()

    except KeyboardInterrupt:
        pass

    except Exception as e:
        print(e)

    finally:
        print('Bye!')
        x.server_close()
        x.shutdown()


if __name__ == '__main__':
    main()