printer_bridge/controllers/main.py

# -*- coding: utf-8 -*-
from openerp import http
from openerp.http import request
from werkzeug.wrappers import Response
from werkzeug.datastructures import Headers
from werkzeug.utils import redirect
from gzip import GzipFile
from StringIO import StringIO as IO
import json
import logging

LOGGER = logging.getLogger(__name__)
GZIP_COMPRESSION_LEVEL = 9

class PrintEngineController(http.Controller):

    '''
    '''
    def make_info_log(self, log):
        LOGGER.info('[INFO] {}'.format(log))

    '''
        Make GZIP to JSON response
    '''
    def make_gzip_response(self, data=None, status=200):
        gzip_buffer = IO()
        with GzipFile(mode='wb', compresslevel=GZIP_COMPRESSION_LEVEL, fileobj=gzip_buffer) as gzip_file:
            gzip_file.write(json.dumps(data))
        
        contents = gzip_buffer.getvalue()
        gzip_buffer.close()

        headers = Headers()
        headers.add('Content-Encoding', 'gzip')
        headers.add('Vary', 'Accept-Encoding')
        headers.add('Content-Length', len(contents))

        return Response(contents, status=status, headers=headers, content_type='application/json')
 
    '''
    '''
    @http.route('/print_engine/update', auth='user', type='json', methods=['POST'], cors='*')
    def printers_update(self, **kw):
        printer_obj = request.env['print.engine.printer']

        for printer in request.env.user.socket_ids.printer_ids:
            printer.unlink()

        for printer_name in json.loads(kw.get('data'))['printers']:
            printer_obj.create({
                'name': printer_name,
                'socket_id': request.env.user.socket_ids.id
            })

        return True

    '''
    '''
    def get_sockets(self):
        socket_obj = request.env['print.engine.socket']

        return [{
            'protocol': socket.protocol,
            'host': socket.host,
            'port': socket.port,
            'path': socket.path
        } for socket in socket_obj.search([('active', '=', True)])]

    '''
    '''
    @http.route('/print_engine/sockets', auth='user', methods=['GET'], cors='*')
    def printers_get_sockets(self, **kw):
        return self.make_gzip_response({
            'sockets': self.get_sockets()
        })