104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
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import json
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import logging
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import time
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import urllib.parse
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import urllib3
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import websocket
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from threading import Thread
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from odoo.addons.hw_drivers import main
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from odoo.addons.hw_drivers.tools import helpers
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_logger = logging.getLogger(__name__)
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websocket.enableTrace(True, level=logging.getLevelName(_logger.getEffectiveLevel()))
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def send_to_controller(print_id, device_identifier):
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server = helpers.get_odoo_server_url()
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try:
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urllib3.disable_warnings()
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http = urllib3.PoolManager(cert_reqs='CERT_NONE')
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http.request(
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'POST',
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server + "/iot/printer/status",
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body=json.dumps(
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{'params': {
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'print_id': print_id,
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'device_identifier': device_identifier,
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}}).encode('utf8'),
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headers={
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'Content-type': 'application/json',
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'Accept': 'text/plain',
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},
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)
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except Exception:
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_logger.exception('Could not reach configured server: %s', server)
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def on_message(ws, messages):
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"""
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When a message is receive, this function is triggered
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The message is load and if its type is 'print', is sent to the printer
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"""
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messages = json.loads(messages)
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for document in messages:
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if (document['message']['type'] == 'print'):
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payload = document['message']['payload']
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if helpers.get_mac_address() in payload['iotDevice']['iotIdentifiers']:
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#send box confirmation
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for device in payload['iotDevice']['identifiers']:
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if device['identifier'] in main.iot_devices:
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main.iot_devices[device["identifier"]]._action_default(payload)
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send_to_controller(payload['print_id'], device['identifier'])
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def on_error(ws, error):
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_logger.error("websocket received an error: %s", error)
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def on_close(ws, close_status_code, close_msg):
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_logger.debug("websocket closed with status: %s", close_status_code)
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class WebsocketClient(Thread):
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iot_channel = ""
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def on_open(self, ws):
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"""
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When the client is setup, this function send a message to subscribe to the iot websocket channel
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"""
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ws.send(
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json.dumps({'event_name': 'subscribe', 'data': {'channels': [self.iot_channel], 'last': 0}})
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)
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def __init__(self, url):
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url_parsed = urllib.parse.urlsplit(url)
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scheme = url_parsed.scheme.replace("http", "ws", 1)
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self.url = urllib.parse.urlunsplit((scheme, url_parsed.netloc, 'websocket', '', ''))
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Thread.__init__(self)
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def run(self):
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self.ws = websocket.WebSocketApp(self.url,
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on_open=self.on_open, on_message=on_message,
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on_error=on_error, on_close=on_close)
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# The IoT synchronised servers can stop in 2 ways that we need to handle:
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# A. Gracefully:
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# In this case a disconnection signal is sent to the IoT-box
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# The websocket is properly closed, but it needs to be established a new connection when
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# the server will be back.
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#
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# B. Forced/killed:
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# In this case there is no disconnection signal received
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#
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# This will also happen with the graceful quit as `reconnect` will trigger if the server
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# is offline while attempting the new connection
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while True:
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try:
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run_res = self.ws.run_forever(reconnect=10)
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_logger.debug("websocket run_forever return with %s", run_res)
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except Exception:
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_logger.exception("An unexpected exception happened when running the websocket")
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_logger.debug('websocket will try to restart in 10 seconds')
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time.sleep(10)
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