electrum-obelisk

Electrum server using libbitcoin as its backend
git clone https://git.parazyd.org/electrum-obelisk
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bx.py (2124B)

      1 #!/usr/bin/env python3
      2 # electrum-obelisk
      3 # Copyright (C) 2020-2021 Ivan J. <parazyd@dyne.org>
      4 #
      5 # This program is free software: you can redistribute it and/or modify
      6 # it under the terms of the GNU Affero General Public License as published by
      7 # the Free Software Foundation, either version 3 of the License, or
      8 # (at your option) any later version.
      9 #
     10 # This program is distributed in the hope that it will be useful,
     11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13 # GNU Affero General Public License for more details.
     14 #
     15 # You should have received a copy of the GNU Affero General Public License
     16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
     17 """ Module for interfacing with the bx/bs command """
     18 import sys
     19 from subprocess import run, CalledProcessError
     20 from logging import getLogger
     21 from json import loads
     22 from json.decoder import JSONDecodeError
     23 
     24 
     25 def bx_json(args):
     26     """ Get JSON data using bx """
     27     cmd = ['bx', args[0], '--format', 'json']
     28     cmd.extend(args[1:])
     29     try:
     30         output = run(cmd, check=True, capture_output=True)
     31     except CalledProcessError:
     32         log = getLogger('electrum-obelisk')
     33         log.warning('bx_json (%s) failed', cmd)
     34         return None
     35     try:
     36         return loads(output.stdout)
     37     except JSONDecodeError:
     38         return None
     39 
     40 
     41 def bx_raw(args):
     42     """ Get raw data using bx """
     43     cmd = ['bx']
     44     cmd.extend(args)
     45     try:
     46         output = run(cmd, check=True, capture_output=True)
     47     except CalledProcessError:
     48         log = getLogger('electrum-obelisk')
     49         log.warning('bx_raw (%s) failed', cmd)
     50         return None
     51     if output.stdout:
     52         return output.stdout[:-1]
     53     return None
     54 
     55 
     56 def bs_version():
     57     """ Get output of bs -v """
     58     try:
     59         output = run(['bs', '-v'], capture_output=True, check=False)
     60         return output.stdout.decode()[:-1]
     61     except FileNotFoundError:
     62         log = getLogger('electrum-obelisk')
     63         log.error('Error: bs is not installed.')
     64         # TODO: Reenable this
     65         #sys.exit(1)
     66     return ""