Neil Booth
10 years ago
14 changed files with 160 additions and 321 deletions
@ -1,235 +0,0 @@ |
|||
#!/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 sys |
|||
import traceback |
|||
import threading |
|||
import Queue |
|||
|
|||
import util |
|||
from network import Network, serialize_proxy, serialize_server |
|||
from simple_config import SimpleConfig |
|||
|
|||
|
|||
class NetworkProxy(util.DaemonThread): |
|||
|
|||
def __init__(self, socket, config=None): |
|||
|
|||
if config is None: |
|||
config = {} # Do not use mutables as default arguments! |
|||
util.DaemonThread.__init__(self) |
|||
self.config = SimpleConfig(config) if type(config) == type({}) else config |
|||
self.message_id = 0 |
|||
self.unanswered_requests = {} |
|||
self.subscriptions = {} |
|||
self.debug = False |
|||
self.lock = threading.Lock() |
|||
self.callbacks = {} |
|||
|
|||
if socket: |
|||
self.pipe = util.SocketPipe(socket) |
|||
self.network = None |
|||
else: |
|||
self.pipe = util.QueuePipe() |
|||
self.network = Network(self.pipe, config) |
|||
self.network.start() |
|||
for key in ['fee','status','banner','updated','servers','interfaces']: |
|||
value = self.network.get_status_value(key) |
|||
self.pipe.get_queue.put({'method':'network.status', 'params':[key, value]}) |
|||
|
|||
# status variables |
|||
self.status = 'unknown' |
|||
self.servers = {} |
|||
self.banner = '' |
|||
self.blockchain_height = 0 |
|||
self.server_height = 0 |
|||
self.interfaces = [] |
|||
# value returned by estimatefee |
|||
self.fee = None |
|||
|
|||
|
|||
def run(self): |
|||
while self.is_running(): |
|||
self.run_jobs() # Synchronizer and Verifier |
|||
try: |
|||
response = self.pipe.get() |
|||
except util.timeout: |
|||
continue |
|||
if response is None: |
|||
break |
|||
# Protect against ill-formed or malicious server responses |
|||
try: |
|||
self.process(response) |
|||
except: |
|||
traceback.print_exc(file=sys.stderr) |
|||
self.trigger_callback('stop') |
|||
if self.network: |
|||
self.network.stop() |
|||
self.print_error("stopped") |
|||
|
|||
def process(self, response): |
|||
if self.debug: |
|||
self.print_error("<--", response) |
|||
|
|||
if response.get('method') == 'network.status': |
|||
key, value = response.get('params') |
|||
if key == 'status': |
|||
self.status = value |
|||
elif key == 'banner': |
|||
self.banner = value |
|||
elif key == 'fee': |
|||
self.fee = value |
|||
elif key == 'updated': |
|||
self.blockchain_height, self.server_height = value |
|||
elif key == 'servers': |
|||
self.servers = value |
|||
elif key == 'interfaces': |
|||
self.interfaces = value |
|||
if key in ['status', 'updated']: |
|||
self.trigger_callback(key) |
|||
else: |
|||
self.trigger_callback(key, (value,)) |
|||
return |
|||
|
|||
msg_id = response.get('id') |
|||
result = response.get('result') |
|||
error = response.get('error') |
|||
if msg_id is not None: |
|||
with self.lock: |
|||
method, params, callback = self.unanswered_requests.pop(msg_id) |
|||
else: |
|||
method = response.get('method') |
|||
params = response.get('params') |
|||
with self.lock: |
|||
for k,v in self.subscriptions.items(): |
|||
if (method, params) in v: |
|||
callback = k |
|||
break |
|||
else: |
|||
self.print_error("received unexpected notification", |
|||
method, params) |
|||
return |
|||
|
|||
r = {'method':method, 'params':params, 'result':result, |
|||
'id':msg_id, 'error':error} |
|||
callback(r) |
|||
|
|||
|
|||
def send(self, messages, callback): |
|||
"""return the ids of the requests that we sent""" |
|||
|
|||
# detect subscriptions |
|||
sub = [] |
|||
for message in messages: |
|||
m, v = message |
|||
if m[-10:] == '.subscribe': |
|||
sub.append(message) |
|||
if sub: |
|||
with self.lock: |
|||
if self.subscriptions.get(callback) is None: |
|||
self.subscriptions[callback] = [] |
|||
for message in sub: |
|||
if message not in self.subscriptions[callback]: |
|||
self.subscriptions[callback].append(message) |
|||
|
|||
with self.lock: |
|||
requests = [] |
|||
ids = [] |
|||
for m in messages: |
|||
method, params = m |
|||
request = { 'id':self.message_id, 'method':method, 'params':params } |
|||
self.unanswered_requests[self.message_id] = method, params, callback |
|||
ids.append(self.message_id) |
|||
requests.append(request) |
|||
if self.debug: |
|||
self.print_error("-->", request) |
|||
self.message_id += 1 |
|||
|
|||
self.pipe.send_all(requests) |
|||
return ids |
|||
|
|||
|
|||
def synchronous_get(self, requests, timeout=100000000): |
|||
queue = Queue.Queue() |
|||
ids = self.send(requests, queue.put) |
|||
id2 = ids[:] |
|||
res = {} |
|||
while ids: |
|||
r = queue.get(True, timeout) |
|||
_id = r.get('id') |
|||
ids.remove(_id) |
|||
if r.get('error'): |
|||
raise BaseException(r.get('error')) |
|||
result = r.get('result') |
|||
res[_id] = r.get('result') |
|||
out = [] |
|||
for _id in id2: |
|||
out.append(res[_id]) |
|||
return out |
|||
|
|||
|
|||
def get_servers(self): |
|||
return self.servers |
|||
|
|||
def get_interfaces(self): |
|||
return self.interfaces |
|||
|
|||
def get_local_height(self): |
|||
return self.blockchain_height |
|||
|
|||
def get_server_height(self): |
|||
return self.server_height |
|||
|
|||
def is_connected(self): |
|||
return self.status == 'connected' |
|||
|
|||
def is_connecting(self): |
|||
return self.status == 'connecting' |
|||
|
|||
def is_up_to_date(self): |
|||
return self.unanswered_requests == {} |
|||
|
|||
def get_parameters(self): |
|||
return self.synchronous_get([('network.get_parameters', [])])[0] |
|||
|
|||
def set_parameters(self, host, port, protocol, proxy, auto_connect): |
|||
proxy_str = serialize_proxy(proxy) |
|||
server_str = serialize_server(host, port, protocol) |
|||
self.config.set_key('auto_connect', auto_connect, False) |
|||
self.config.set_key("proxy", proxy_str, False) |
|||
self.config.set_key("server", server_str, True) |
|||
# abort if changes were not allowed by config |
|||
if self.config.get('server') != server_str or self.config.get('proxy') != proxy_str: |
|||
return |
|||
|
|||
return self.synchronous_get([('network.set_parameters', (host, port, protocol, proxy, auto_connect))])[0] |
|||
|
|||
def stop_daemon(self): |
|||
return self.send([('daemon.stop',[])], None) |
|||
|
|||
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, params=()): |
|||
with self.lock: |
|||
callbacks = self.callbacks.get(event,[])[:] |
|||
if callbacks: |
|||
[callback(*params) for callback in callbacks] |
|||
Loading…
Reference in new issue