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#!/usr/bin/env python3
#
# Copyright (c) 2016, Neil Booth
#
# All rights reserved.
#
# See the file "LICENCE" for information about the copyright
# and warranty status of this software.
'''Script to send RPC commands to a running ElectrumX server.'''
import argparse
import asyncio
import json
from functools import partial
from os import environ
class RPCClient(asyncio.Protocol):
def __init__(self, loop):
self.loop = loop
self.method = None
def connection_made(self, transport):
self.transport = transport
def connection_lost(self, exc):
self.loop.stop()
def send(self, method, params):
self.method = method
payload = {'method': method, 'params': params, 'id': 'RPC'}
data = json.dumps(payload) + '\n'
self.transport.write(data.encode())
def data_received(self, data):
payload = json.loads(data.decode())
self.transport.close()
result = payload['result']
error = payload['error']
if error:
print("ERROR: {}".format(error))
else:
def data_fmt(count, size):
return '{:,d}/{:,d}KB'.format(count, size // 1024)
def time_fmt(t):
t = int(t)
return ('{:3d}:{:02d}:{:02d}'
.format(t // 3600, (t % 3600) // 60, t % 60))
if self.method == 'sessions':
fmt = ('{:<4} {:>23} {:>15} {:>5} '
'{:>7} {:>7} {:>7} {:>7} {:>5} {:>9}')
print(fmt.format('Type', 'Peer', 'Client', 'Subs',
'Snt #', 'Snt MB', 'Rcv #', 'Rcv MB',
'Errs', 'Time'))
for (kind, peer, subs, client, recv_count, recv_size,
send_count, send_size, error_count, time) in result:
print(fmt.format(kind, peer, client, '{:,d}'.format(subs),
'{:,d}'.format(recv_count),
'{:,.1f}'.format(recv_size / 1048576),
'{:,d}'.format(send_count),
'{:,.1f}'.format(send_size / 1048576),
'{:,d}'.format(error_count),
time_fmt(time)))
else:
print(json.dumps(result, indent=4, sort_keys=True))
def main():
'''Send the RPC command to the server and print the result.'''
parser = argparse.ArgumentParser('Send electrumx an RPC command' )
parser.add_argument('-p', '--port', metavar='port_num', type=int,
help='RPC port number')
parser.add_argument('command', nargs=1, default=[],
help='command to send')
parser.add_argument('param', nargs='*', default=[],
help='params to send')
args = parser.parse_args()
if args.port is None:
args.port = int(environ.get('ELECTRUMX_RPC_PORT', 8000))
loop = asyncio.get_event_loop()
proto_factory = partial(RPCClient, loop)
coro = loop.create_connection(proto_factory, 'localhost', args.port)
try:
transport, protocol = loop.run_until_complete(coro)
protocol.send(args.command[0], args.param)
loop.run_forever()
except OSError:
print('error connecting - is ElectrumX catching up or not running?')
finally:
loop.close()
if __name__ == '__main__':
main()