1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.
import jinja2
import json
import logging
import netifaces as ni
import os
import subprocess
import threading
import time
import urllib3
from odoo import http
from odoo.addons.hw_drivers.connection_manager import connection_manager
from odoo.addons.hw_drivers.driver import Driver
from odoo.addons.hw_drivers.event_manager import event_manager
from odoo.addons.hw_drivers.main import iot_devices
from odoo.addons.hw_drivers.tools import helpers
path = os.path.realpath(os.path.join(os.path.dirname(__file__), '../../views'))
loader = jinja2.FileSystemLoader(path)
jinja_env = jinja2.Environment(loader=loader, autoescape=True)
jinja_env.filters["json"] = json.dumps
pos_display_template = jinja_env.get_template('pos_display.html')
_logger = logging.getLogger(__name__)
class DisplayDriver(Driver):
connection_type = 'display'
def __init__(self, identifier, device):
super(DisplayDriver, self).__init__(identifier, device)
self.device_type = 'display'
self.device_connection = 'hdmi'
self.device_name = device['name']
self.event_data = threading.Event()
self.owner = False
self.rendered_html = ''
if self.device_identifier != 'distant_display':
self._x_screen = device.get('x_screen', '0')
self.load_url()
@classmethod
def supported(cls, device):
return True # All devices with connection_type == 'display' are supported
@classmethod
def get_default_display(cls):
displays = list(filter(lambda d: iot_devices[d].device_type == 'display', iot_devices))
return len(displays) and iot_devices[displays[0]]
def action(self, data):
if data.get('action') == "update_url" and self.device_identifier != 'distant_display':
self.update_url(data.get('url'))
elif data.get('action') == "display_refresh" and self.device_identifier != 'distant_display':
self.call_xdotools('F5')
elif data.get('action') == "take_control":
self.take_control(self.data['owner'], data.get('html'))
elif data.get('action') == "customer_facing_display":
self.update_customer_facing_display(self.data['owner'], data.get('html'))
elif data.get('action') == "get_owner":
self.data = {
'value': '',
'owner': self.owner,
}
event_manager.device_changed(self)
def run(self):
while self.device_identifier != 'distant_display' and not self._stopped.isSet():
time.sleep(60)
if self.url != 'http://localhost:8069/point_of_sale/display/' + self.device_identifier:
# Refresh the page every minute
self.call_xdotools('F5')
def update_url(self, url=None):
os.environ['DISPLAY'] = ":0." + self._x_screen
os.environ['XAUTHORITY'] = '/run/lightdm/pi/xauthority'
firefox_env = os.environ.copy()
firefox_env['HOME'] = '/tmp/' + self._x_screen
self.url = url or 'http://localhost:8069/point_of_sale/display/' + self.device_identifier
new_window = subprocess.call(['xdotool', 'search', '--onlyvisible', '--screen', self._x_screen, '--class', 'Firefox'])
subprocess.Popen(['firefox', self.url], env=firefox_env)
if new_window:
self.call_xdotools('F11')
def load_url(self):
url = None
if helpers.get_odoo_server_url():
# disable certifiacte verification
urllib3.disable_warnings()
http = urllib3.PoolManager(cert_reqs='CERT_NONE')
try:
response = http.request('GET', "%s/iot/box/%s/display_url" % (helpers.get_odoo_server_url(), helpers.get_mac_address()))
if response.status == 200:
data = json.loads(response.data.decode('utf8'))
url = data[self.device_identifier]
except json.decoder.JSONDecodeError:
url = response.data.decode('utf8')
except Exception:
pass
return self.update_url(url)
def call_xdotools(self, keystroke):
os.environ['DISPLAY'] = ":0." + self._x_screen
os.environ['XAUTHORITY'] = "/run/lightdm/pi/xauthority"
try:
subprocess.call(['xdotool', 'search', '--sync', '--onlyvisible', '--screen', self._x_screen, '--class', 'Firefox', 'key', keystroke])
return "xdotool succeeded in stroking " + keystroke
except:
return "xdotool threw an error, maybe it is not installed on the IoTBox"
def update_customer_facing_display(self, origin, html=None):
if origin == self.owner:
self.rendered_html = html
self.event_data.set()
def get_serialized_order(self):
# IMPLEMENTATION OF LONGPOLLING
# Times out 2 seconds before the JS request does
if self.event_data.wait(28):
self.event_data.clear()
return {'rendered_html': self.rendered_html}
return {'rendered_html': False}
def take_control(self, new_owner, html=None):
# ALLOW A CASHIER TO TAKE CONTROL OVER THE POSBOX, IN CASE OF MULTIPLE CASHIER PER DISPLAY
self.owner = new_owner
self.rendered_html = html
self.data = {
'value': '',
'owner': self.owner,
}
event_manager.device_changed(self)
self.event_data.set()
class DisplayController(http.Controller):
@http.route('/hw_proxy/display_refresh', type='json', auth='none', cors='*')
def display_refresh(self):
display = DisplayDriver.get_default_display()
if display and display.device_identifier != 'distant_display':
return display.call_xdotools('F5')
@http.route('/hw_proxy/customer_facing_display', type='json', auth='none', cors='*')
def customer_facing_display(self, html=None):
display = DisplayDriver.get_default_display()
if display:
display.update_customer_facing_display(http.request.httprequest.remote_addr, html)
return {'status': 'updated'}
return {'status': 'failed'}
@http.route('/hw_proxy/take_control', type='json', auth='none', cors='*')
def take_control(self, html=None):
display = DisplayDriver.get_default_display()
if display:
display.take_control(http.request.httprequest.remote_addr, html)
return {
'status': 'success',
'message': 'You now have access to the display',
}
@http.route('/hw_proxy/test_ownership', type='json', auth='none', cors='*')
def test_ownership(self):
display = DisplayDriver.get_default_display()
if display and display.owner == http.request.httprequest.remote_addr:
return {'status': 'OWNER'}
return {'status': 'NOWNER'}
@http.route(['/point_of_sale/get_serialized_order', '/point_of_sale/get_serialized_order/<string:display_identifier>'], type='json', auth='none')
def get_serialized_order(self, display_identifier=None):
if display_identifier:
display = iot_devices.get(display_identifier)
else:
display = DisplayDriver.get_default_display()
if display:
return display.get_serialized_order()
return {
'rendered_html': False,
'error': "No display found",
}
@http.route(['/point_of_sale/display', '/point_of_sale/display/<string:display_identifier>'], type='http', auth='none')
def display(self, display_identifier=None):
cust_js = None
interfaces = ni.interfaces()
with open(os.path.join(os.path.dirname(__file__), "../../static/src/js/worker.js")) as js:
cust_js = js.read()
display_ifaces = []
for iface_id in interfaces:
if 'wlan' in iface_id or 'eth' in iface_id:
iface_obj = ni.ifaddresses(iface_id)
ifconfigs = iface_obj.get(ni.AF_INET, [])
essid = helpers.get_ssid()
for conf in ifconfigs:
if conf.get('addr'):
display_ifaces.append({
'iface_id': iface_id,
'essid': essid,
'addr': conf.get('addr'),
'icon': 'sitemap' if 'eth' in iface_id else 'wifi',
})
if not display_identifier:
display_identifier = DisplayDriver.get_default_display().device_identifier
return pos_display_template.render({
'title': "Odoo -- Point of Sale",
'breadcrumb': 'POS Client display',
'cust_js': cust_js,
'display_ifaces': display_ifaces,
'display_identifier': display_identifier,
'pairing_code': connection_manager.pairing_code,
})
|
