Mercurial > libervia-web

annotate libervia/pages/_browser/bridge.py @ 1513:ff95501abe74

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
server (websocket): don't crash when a force-close is failing
author Goffi <goffi@goffi.org>
date Mon, 22 May 2023 11:57:49 +0200
parents 5ea06e8b06ed
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1510
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
1 from browser import window, aio, timer, console as log
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
2 import time
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
3 import random
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
4 import json
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
5 import dialog
1297
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
6 import javascript
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
7
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
8
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
9 log.warning = log.warn
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
10 tab_id = random.randint(0, 2**64)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
11 log.info(f"TAB ID is {tab_id}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
12
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
13
1510
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
14 class BridgeException(Exception):
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
15 """An exception which has been raised from the backend and arrived to the frontend."""
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
16
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
17 def __init__(self, name, message="", condition=""):
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
18 """
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
19
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
20 @param name (str): full exception class name (with module)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
21 @param message (str): error message
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
22 @param condition (str) : error condition
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
23 """
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
24 Exception.__init__(self)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
25 self.fullname = str(name)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
26 self.message = str(message)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
27 self.condition = str(condition) if condition else ""
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
28 self.module, __, self.classname = str(self.fullname).rpartition(".")
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
29
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
30 def __str__(self):
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
31 return f"{self.classname}: {self.message or ''}"
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
32
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
33 def __eq__(self, other):
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
34 return self.classname == other
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
35
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
36
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
37 class WebSocket:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
38
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
39 def __init__(self, broadcast_channel):
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
40 self.broadcast_channel = broadcast_channel
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
41 self.token = window.ws_token
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
42 self.create_socket()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
43 self.retrying = False
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
44 self.network_error = False
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
45
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
46 @property
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
47 def profile(self):
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
48 return self.broadcast_channel.profile
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
49
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
50 def retry_connect(self) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
51 if self.retrying:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
52 return
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
53 self.retrying = True
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
54 try:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
55 notif = dialog.RetryNotification(self.create_socket)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
56 notif.show(
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
57 "Can't connect to server",
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
58 delay=random.randint(0, 30)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
59 )
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
60 except Exception as e:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
61 # for security reasons, browser don't give the reason of the error with
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
62 # WebSockets, thus we try to detect network error here, as if we can't show
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
63 # the retry dialog, that probably means that it's not reachable
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
64 try:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
65 name = e.name
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
66 except AttributeError:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
67 name = None
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
68 if name == "NetworkError":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
69 self.network_error = True
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
70 log.warning("network error detected, server may be down")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
71 log.error(f"Can't show retry dialog: {e}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
72 log.info("retrying in 30s")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
73 timer.set_timeout(self.create_socket, 30000)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
74 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
75 raise e
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
76 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
77 # if we can show the retry dialog, the network is fine
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
78 self.network_error = False
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
79
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
80 def create_socket(self) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
81 log.debug("creating socket")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
82 self.retrying = False
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
83 self.socket = window.WebSocket.new(window.ws_url, "libervia-page")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
84 self.socket_start = time.time()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
85 self.socket.bind("open", self.on_open)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
86 self.socket.bind("error", self.on_error)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
87 self.socket.bind("close", self.on_close)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
88 self.socket.bind("message", self.on_message)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
89
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
90 def send(self, data_type: str, data: dict) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
91 self.socket.send(json.dumps({
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
92 "type": data_type,
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
93 "data": data
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
94 }))
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
95
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
96 def close(self) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
97 log.debug("closing socket")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
98 self.broadcast_channel.ws = None
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
99 self.socket.close()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
100
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
101 def on_open(self, evt) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
102 log.info("websocket connection opened")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
103 self.send("init", {"profile": self.profile, "token": self.token})
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
104
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
105 def on_error(self, evt) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
106 if not self.network_error and time.time() - self.socket_start < 5:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
107 # disconnection is happening fast, we try to reload
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
108 log.warning("Reloading due to suspected session error")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
109 window.location.reload()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
110 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
111 self.retry_connect()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
112
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
113 def on_close(self, evt) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
114 log.warning(f"websocket is closed {evt.code=} {evt.reason=}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
115 if self.broadcast_channel.ws is None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
116 # this is a close requested locally
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
117 return
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
118 elif evt.code == 4401:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
119 log.info(
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
120 "no authorized, the session is probably not valid anymore, reloading"
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
121 )
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
122 window.location.reload()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
123 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
124 # close event may be due to normal tab closing, thus we try to reconnect only
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
125 # after a delay
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
126 timer.set_timeout(self.retry_connect, 5000)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
127
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
128 def on_message(self, message_evt):
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
129 msg_data = json.loads(message_evt.data)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
130 msg_type = msg_data.get("type")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
131 if msg_type == "bridge":
1506
ce879da7fcf7 server: fix `on_signal` callback
Goffi <goffi@goffi.org>
parents: 1504
diff changeset
132 log.debug(
ce879da7fcf7 server: fix `on_signal` callback
Goffi <goffi@goffi.org>
parents: 1504
diff changeset
133 f"==> bridge message: {msg_data=}"
ce879da7fcf7 server: fix `on_signal` callback
Goffi <goffi@goffi.org>
parents: 1504
diff changeset
134 )
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
135 self.broadcast_channel.post(
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
136 msg_type,
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
137 msg_data["data"]
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
138 )
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
139 elif msg_type == "force_close":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
140 log.warning(f"force closing connection: {msg_data.get('reason')}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
141 self.close()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
142 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
143 dialog.notification.show(
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
144 f"Unexpected message type {msg_type}"
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
145 "error"
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
146 )
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
147
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
148
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
149 class BroadcastChannel:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
150 handlers = {}
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
151
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
152 def __init__(self):
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
153 log.debug(f"BroadcastChannel init with profile {self.profile!r}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
154 self.start = time.time()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
155 self.bc = window.BroadcastChannel.new("libervia")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
156 self.bc.bind("message", self.on_message)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
157 # there is no way to check if there is already a connection in BroadcastChannel
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
158 # API, thus we wait a bit to see if somebody is answering. If not, we are probably
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
159 # the first tab.
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
160 self.check_connection_timer = timer.set_timeout(self.establish_connection, 20)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
161 self.ws = None
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
162 # set of all known tab ids
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
163 self.tabs_ids = {tab_id}
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
164 self.post("salut_a_vous", {
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
165 "id": tab_id,
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
166 "profile": self.profile
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
167 })
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
168 window.bind("unload", self.on_unload)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
169
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
170 @property
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
171 def profile(self):
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
172 return window.profile or ""
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
173
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
174 @property
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
175 def connecting_tab(self) -> bool:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
176 """True is this tab is the one establishing the websocket connection"""
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
177 return self.ws is not None
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
178
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
179 @connecting_tab.setter
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
180 def connecting_tab(self, connecting: bool) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
181 if connecting:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
182 if self.ws is None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
183 self.ws = WebSocket(self)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
184 self.post("connection", {
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
185 "tab_id": tab_id
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
186 })
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
187 elif self.ws is not None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
188 self.ws.close()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
189
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
190 def establish_connection(self) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
191 """Called when there is no existing connection"""
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
192 timer.clear_timeout(self.check_connection_timer)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
193 log.debug(f"Establishing connection {tab_id=}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
194 self.connecting_tab = True
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
195
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
196 def handle_bridge_signal(self, data: dict) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
197 """Forward bridge signals to registered handlers"""
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
198 signal = data["signal"]
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
199 handlers = self.handlers.get(signal, [])
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
200 for handler in handlers:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
201 handler(*data["args"])
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
202
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
203 def on_message(self, evt) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
204 data = json.loads(evt.data)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
205 if data["type"] == "bridge":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
206 self.handle_bridge_signal(data)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
207 elif data["type"] == "salut_a_toi":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
208 # this is a response from existing tabs
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
209 other_tab_id = data["id"]
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
210 if other_tab_id == tab_id:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
211 # in the unlikely case that this happens, we simply reload this tab to get
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
212 # a new ID
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
213 log.warning("duplicate tab id, we reload the page: {tab_id=}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
214 window.location.reload()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
215 return
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
216 self.tabs_ids.add(other_tab_id)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
217 if data["connecting_tab"] and self.check_connection_timer is not None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
218 # this tab has the websocket connection to server
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
219 log.info(f"there is already a connection to server at tab {other_tab_id}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
220 timer.clear_timeout(self.check_connection_timer)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
221 self.check_connection_timer = None
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
222 elif data["type"] == "salut_a_vous":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
223 # a new tab has just been created
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
224 if data["profile"] != self.profile:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
225 log.info(
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
226 f"we are now connected with the profile {data['profile']}, "
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
227 "reloading the page"
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
228 )
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
229 window.location.reload()
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
230 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
231 self.tabs_ids.add(data["id"])
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
232 self.post("salut_a_toi", {
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
233 "id": tab_id,
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
234 "connecting_tab": self.connecting_tab
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
235 })
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
236 elif data["type"] == "connection":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
237 log.info(f"tab {data['id']} is the new connecting tab")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
238 elif data["type"] == "salut_a_rantanplan":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
239 # a tab is being closed
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
240 other_tab_id = data["id"]
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
241 # it is unlikely that there is a collision, but just in case we check it
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
242 if other_tab_id != tab_id:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
243 self.tabs_ids.discard(other_tab_id)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
244 if data["connecting_tab"]:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
245 log.info(f"connecting tab with id {other_tab_id} has been closed")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
246 if max(self.tabs_ids) == tab_id:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
247 log.info("this is the new connecting tab, establish_connection")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
248 self.connecting_tab = True
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
249 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
250 log.info(f"tab with id {other_tab_id} has been closed")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
251 else:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
252 log.warning(f"unknown message type: {data}")
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
253
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
254 def post(self, data_type, data: dict):
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
255 data["type"] = data_type
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
256 data["id"] = tab_id
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
257 self.bc.postMessage(json.dumps(data))
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
258 if data_type == "bridge":
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
259 self.handle_bridge_signal(data)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
260
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
261 def on_unload(self, evt) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
262 """Send a message to indicate that the tab is being closed"""
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
263 self.post("salut_a_rantanplan", {
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
264 "id": tab_id,
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
265 "connecting_tab": self.connecting_tab
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
266 })
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
267
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
268
1510
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
269 class Bridge:
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
270 bc: BroadcastChannel | None = None
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
271
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
272 def __init__(self) -> None:
1510
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
273 if Bridge.bc is None:
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
274 Bridge.bc = BroadcastChannel()
1297
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
275
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
276 def __getattr__(self, attr):
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
277 return lambda *args, **kwargs: self.call(attr, *args, **kwargs)
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
278
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
279 def on_load(self, xhr, ev, callback, errback):
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
280 if xhr.status == 200:
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
281 ret = javascript.JSON.parse(xhr.response)
1314
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
282 if callback is not None:
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
283 if ret is None:
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
284 callback()
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
285 else:
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
286 callback(ret)
1297
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
287 elif xhr.status == 502:
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
288 # PROXY_ERROR is used for bridge error
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
289 ret = javascript.JSON.parse(xhr.response)
1314
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
290 if errback is not None:
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
291 errback(ret)
1297
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
292 else:
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
293 log.error(
1510
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
294 f"bridge call failed: code: {xhr.response}, text: {xhr.statusText}"
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
295 )
1314
8998f01088ac browser (bridge): handle case where `callback` or `errback` is None
Goffi <goffi@goffi.org>
parents: 1297
diff changeset
296 if errback is not None:
1477
b28025a7cc28 browser (bride): use `BridgeInternalError` for unmanaged errors:
Goffi <goffi@goffi.org>
parents: 1314
diff changeset
297 errback({"fullname": "BridgeInternalError", "message": xhr.statusText})
1297
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
298
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
299 def call(self, method_name, *args, callback, errback, **kwargs):
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
300 xhr = window.XMLHttpRequest.new()
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
301 xhr.bind('load', lambda ev: self.on_load(xhr, ev, callback, errback))
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
302 xhr.bind('error', lambda ev: errback(
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
303 {"fullname": "ConnectionError", "message": xhr.statusText}))
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
304 xhr.open("POST", f"/_bridge/{method_name}", True)
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
305 data = javascript.JSON.stringify({
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
306 "args": args,
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
307 "kwargs": kwargs,
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
308 })
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
309 xhr.setRequestHeader('X-Csrf-Token', window.csrf_token)
999dccf0093e browser: new bridge module to access restricted bridge from browser
Goffi <goffi@goffi.org>
parents:
diff changeset
310 xhr.send(data)
1504
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
311
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
312 def register_signal(self, signal: str, handler, iface=None) -> None:
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
313 BroadcastChannel.handlers.setdefault(signal, []).append(handler)
409d10211b20 server, browser: dynamic pages refactoring:
Goffi <goffi@goffi.org>
parents: 1477
diff changeset
314 log.debug(f"signal {signal} has been registered")
1510
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
315
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
316
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
317 class AsyncBridge:
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
318
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
319 def __getattr__(self, attr):
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
320 return lambda *args, **kwargs: self.call(attr, *args, **kwargs)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
321
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
322 async def call(self, method_name, *args, **kwargs):
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
323 print(f"calling {method_name}")
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
324 data = javascript.JSON.stringify({
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
325 "args": args,
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
326 "kwargs": kwargs,
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
327 })
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
328 url = f"/_bridge/{method_name}"
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
329 r = await aio.post(
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
330 url,
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
331 headers={
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
332 'X-Csrf-Token': window.csrf_token,
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
333 },
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
334 data=data,
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
335 )
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
336
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
337 if r.status == 200:
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
338 return javascript.JSON.parse(r.data)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
339 elif r.status == 502:
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
340 ret = javascript.JSON.parse(r.data)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
341 raise BridgeException(ret['fullname'], ret['message'], ret['condition'])
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
342 else:
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
343 print(f"bridge called failed: code: {r.status}, text: {r.statusText}")
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
344 raise BridgeException("InternalError", r.statusText)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
345
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
346 def register_signal(self, signal: str, handler, iface=None) -> None:
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
347 BroadcastChannel.handlers.setdefault(signal, []).append(handler)
5ea06e8b06ed browser: make bridge API closer to the one use with other frontends:
Goffi <goffi@goffi.org>
parents: 1509
diff changeset
348 log.debug(f"signal {signal} has been registered")