ThomasV
11 years ago
10 changed files with 332 additions and 258 deletions
@ -0,0 +1,187 @@ |
|||
#!/usr/bin/env python |
|||
# |
|||
# Electrum - lightweight Bitcoin client |
|||
# Copyright (C) 2014 Thomas Voegtlin |
|||
# |
|||
# This program is free software: you can redistribute it and/or modify |
|||
# it under the terms of the GNU General Public License as published by |
|||
# the Free Software Foundation, either version 3 of the License, or |
|||
# (at your option) any later version. |
|||
# |
|||
# This program is distributed in the hope that it will be useful, |
|||
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
|||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
# GNU General Public License for more details. |
|||
# |
|||
# You should have received a copy of the GNU General Public License |
|||
# along with this program. If not, see <http://www.gnu.org/licenses/>. |
|||
|
|||
import socket |
|||
import time |
|||
import sys |
|||
import os |
|||
import threading |
|||
import traceback |
|||
import json |
|||
import Queue |
|||
from network import Network |
|||
from util import print_error, print_stderr |
|||
from simple_config import SimpleConfig |
|||
|
|||
from daemon import parse_json, NetworkServer, DAEMON_PORT |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
class NetworkProxy(threading.Thread): |
|||
|
|||
def __init__(self, socket, config=None): |
|||
if config is None: |
|||
config = {} # Do not use mutables as default arguments! |
|||
threading.Thread.__init__(self) |
|||
self.config = SimpleConfig(config) if type(config) == type({}) else config |
|||
self.socket = socket |
|||
self.socket.settimeout(0.1) |
|||
self.message_id = 0 |
|||
self.unanswered_requests = {} |
|||
self.subscriptions = {} |
|||
self.debug = False |
|||
self.lock = threading.Lock() |
|||
self.pending_transactions_for_notifications = [] |
|||
self.banner = '' |
|||
self.callbacks = {} |
|||
self.running = True |
|||
self.daemon = True |
|||
|
|||
def is_running(self): |
|||
return self.running |
|||
|
|||
def run(self): |
|||
# read responses and trigger callbacks |
|||
message = '' |
|||
while self.is_running(): |
|||
try: |
|||
data = self.socket.recv(1024) |
|||
except socket.timeout: |
|||
continue |
|||
except: |
|||
data = '' |
|||
if not data: |
|||
break |
|||
message += data |
|||
while True: |
|||
response, message = parse_json(message) |
|||
if response is not None: |
|||
self.process(response) |
|||
else: |
|||
break |
|||
# fixme: server does not detect if we don't call shutdown |
|||
self.socket.shutdown(2) |
|||
self.socket.close() |
|||
print_error("NetworkProxy thread terminating") |
|||
|
|||
def process(self, response): |
|||
if self.debug: |
|||
print_error("<--", response) |
|||
|
|||
if response.get('method') == 'network.subscribe': |
|||
status = response.get('status') |
|||
self.trigger_callback(status) |
|||
return |
|||
|
|||
msg_id = response.get('id') |
|||
with self.lock: |
|||
method, params, callback = self.unanswered_requests.pop(msg_id) |
|||
|
|||
result = response.get('result') |
|||
callback(None, {'method':method, 'params':params, 'result':result, 'id':msg_id}) |
|||
|
|||
|
|||
def subscribe(self, messages, callback): |
|||
# detect if it is a subscription |
|||
with self.lock: |
|||
if self.subscriptions.get(callback) is None: |
|||
self.subscriptions[callback] = [] |
|||
for message in messages: |
|||
if message not in self.subscriptions[callback]: |
|||
self.subscriptions[callback].append(message) |
|||
|
|||
self.send( messages, callback ) |
|||
|
|||
|
|||
def send(self, messages, callback): |
|||
"""return the ids of the requests that we sent""" |
|||
with self.lock: |
|||
out = '' |
|||
ids = [] |
|||
for m in messages: |
|||
method, params = m |
|||
request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } ) |
|||
self.unanswered_requests[self.message_id] = method, params, callback |
|||
ids.append(self.message_id) |
|||
if self.debug: |
|||
print_error("-->", request) |
|||
self.message_id += 1 |
|||
out += request + '\n' |
|||
while out: |
|||
sent = self.socket.send( out ) |
|||
out = out[sent:] |
|||
return ids |
|||
|
|||
|
|||
def synchronous_get(self, requests, timeout=100000000): |
|||
queue = Queue.Queue() |
|||
ids = self.send(requests, lambda i,x: queue.put(x)) |
|||
id2 = ids[:] |
|||
res = {} |
|||
while ids: |
|||
r = queue.get(True, timeout) |
|||
_id = r.get('id') |
|||
if _id in ids: |
|||
ids.remove(_id) |
|||
res[_id] = r.get('result') |
|||
else: |
|||
raise |
|||
out = [] |
|||
for _id in id2: |
|||
out.append(res[_id]) |
|||
return out |
|||
|
|||
|
|||
def get_servers(self): |
|||
return self.synchronous_get([('network.get_servers',[])])[0] |
|||
|
|||
def get_header(self, height): |
|||
return self.synchronous_get([('network.get_header',[height])])[0] |
|||
|
|||
def get_local_height(self): |
|||
return self.synchronous_get([('network.get_local_height',[])])[0] |
|||
|
|||
def is_connected(self): |
|||
return self.synchronous_get([('network.is_connected',[])])[0] |
|||
|
|||
def is_up_to_date(self): |
|||
return self.synchronous_get([('network.is_up_to_date',[])])[0] |
|||
|
|||
def main_server(self): |
|||
return self.synchronous_get([('network.main_server',[])])[0] |
|||
|
|||
def stop(self): |
|||
self.running = False |
|||
|
|||
|
|||
def register_callback(self, event, callback): |
|||
with self.lock: |
|||
if not self.callbacks.get(event): |
|||
self.callbacks[event] = [] |
|||
self.callbacks[event].append(callback) |
|||
|
|||
|
|||
def trigger_callback(self, event): |
|||
with self.lock: |
|||
callbacks = self.callbacks.get(event,[])[:] |
|||
if callbacks: |
|||
[callback() for callback in callbacks] |
|||
|
|||
print_error("trigger_callback", event, len(callbacks)) |
|||
Loading…
Reference in new issue