mirror of
https://github.com/xcat2/confluent.git
synced 2024-11-23 01:53:28 +00:00
77284af60d
Before there was some awkward ambiguity between top level key names and node names. For example a node named 'error' would be tricky. Address that by allocating a 'databynode' top level container to clarify the namespace of keys is nodenames specifically. Use this to simplify code that tried to workaround the ambiguity.
676 lines
22 KiB
Python
Executable File
676 lines
22 KiB
Python
Executable File
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2014 IBM Corporation
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# Copyright 2015 Lenovo
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ultimately, this should provide an interactive cli for navigating confluent
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# tree and doing console with a socket. <ESC>]0;<string><BELL> can be used to
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# present info such as whether it is in a console or other mode and, if in
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# console, how many other connections are live and looking
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# this means 'wcons' simply needs to make a terminal run and we'll take care of
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# the title while providing more info
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# this also means the socket interface needs to have ways to convey more
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# interesting pieces of data (like concurrent connection count)
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# socket will probably switch to a TLV scheme:
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# 32 bit TL, 8 bits of type code and 24 bit size
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# type codes:
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# 0: string data
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# 1: json data
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# 24 bit size allows the peer to avoid having to do any particular parsing to
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# understand message boundaries (which is a significant burden on the xCAT
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# protocol)
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# When in a console client mode, will recognize two escape sequences by
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# default:
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# Ctrl-E, c, ?: mimic conserver behavior
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# ctrl-]: go to interactive prompt (telnet escape, but not telnet prompt)
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# esc-( would interfere with normal esc use too much
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# ~ I will not use for now...
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import fcntl
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import math
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import getpass
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import optparse
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import os
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import readline
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import select
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import shlex
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import socket
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import sys
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import termios
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import time
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import tty
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exitcode = 0
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consoleonly = False
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consolename = ""
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didconsole = False
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target = "/"
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path = os.path.dirname(os.path.realpath(__file__))
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path = os.path.realpath(os.path.join(path, '..', 'lib', 'python'))
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if path.startswith('/opt'):
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sys.path.append(path)
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import confluent.termhandler as termhandler
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import confluent.tlvdata as tlvdata
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import confluent.client as client
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conserversequence = '\x05c' # ctrl-e, c
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oldtcattr = None
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fd = sys.stdin
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if fd.isatty():
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oldtcattr = termios.tcgetattr(fd.fileno())
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netserver = None
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laststate = {}
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def updatestatus(stateinfo={}):
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status = consolename
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info = []
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for statekey in stateinfo.iterkeys():
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laststate[statekey] = stateinfo[statekey]
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if ('connectstate' in laststate and
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laststate['connectstate'] != 'connected'):
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info.append(laststate['connectstate'])
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if 'error' in laststate:
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info.append(laststate['error'])
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# error will be repeated if relevant
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# avoid keeping it around as stale
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del laststate['error']
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if 'clientcount' in laststate and laststate['clientcount'] != 1:
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info.append('clients: %d' % laststate['clientcount'])
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if 'bufferage' in stateinfo and stateinfo['bufferage'] is not None:
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laststate['showtime'] = time.time() - stateinfo['bufferage']
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if 'showtime' in laststate:
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showtime = laststate['showtime']
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age = time.time() - laststate['showtime']
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if age > 86400: # older than one day
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# disambiguate by putting date in and time
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info.append(time.strftime('%m-%dT%H:%M', time.localtime(showtime)))
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else:
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info.append(time.strftime('%H:%M', time.localtime(showtime)))
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if info:
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status += ' [' + ','.join(info) + ']'
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if os.environ['TERM'] not in ('linux'):
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sys.stdout.write('\x1b]0;console: %s\x07' % status)
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sys.stdout.flush()
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def recurse_format(datum, levels=0):
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ret = ''
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import json
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return json.dumps(datum, ensure_ascii=False, indent=1)
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if isinstance(datum, dict):
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for key in datum.iterkeys():
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if datum[key] is None:
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continue
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ret += key + ':'
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if type(datum[key]) in (str, unicode):
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ret += datum[key] + '\n'
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else:
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ret += recurse_format(datum[key], levels + 1)
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elif isinstance(datum, list):
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if type(datum[0]) in (str, unicode):
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ret += '[' + ",".join(datum) + ']\n'
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else:
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ret += '['
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elems = []
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for elem in datum:
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elems.append('{' + recurse_format(elem, levels + 1) + '}')
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ret += ','.join(elems)
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ret += (' ' * levels) + ']\n'
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return ret
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def prompt():
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if os.environ['TERM'] not in ('linux'):
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sys.stdout.write('\x1b]0;confetty: %s\x07' % target)
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try:
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return raw_input(target + ' -> ')
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except KeyboardInterrupt:
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print ""
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return ""
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except EOFError: # ctrl-d
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print("exit")
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return "exit"
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# sys.stdout.write(target + ' -> ')
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# sys.stdout.flush()
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# username = raw_input("Name: ")
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valid_commands = [
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'start',
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'cd',
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'show',
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'set',
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'unset',
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'create',
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'remove',
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'rm',
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'delete',
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]
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candidates = None
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session = None
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def completer(text, state):
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try:
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return rcompleter(text, state)
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except:
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pass
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#import traceback
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#traceback.print_exc()
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def rcompleter(text, state):
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global candidates
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global valid_commands
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cline = readline.get_line_buffer()
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cline = cline[:readline.get_endidx()]
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if len(text):
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cline = cline[:-len(text)]
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args = shlex.split(cline, posix=True)
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currpos = len(args)
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if currpos and cline[-1] == ' ':
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lastarg = ''
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currpos += 1
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elif currpos:
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lastarg = args[-1]
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else:
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lastarg = ''
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if currpos <= 1:
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foundcount = 0
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for cmd in valid_commands:
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if cmd.startswith(text):
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if foundcount == state:
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return cmd
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else:
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foundcount += 1
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candidates = None
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return None
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cmd = args[0]
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if candidates is None:
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candidates = []
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targpath = fullpath_target(lastarg)
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for res in session.read(targpath):
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if 'item' in res: # a link relation
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if type(res['item']) == dict:
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candidates.append(res['item']["href"])
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else:
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for item in res['item']:
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candidates.append(item["href"])
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foundcount = 0
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for elem in candidates:
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if cmd == 'cd' and elem[-1] != '/':
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continue
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if elem.startswith(text):
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if foundcount == state:
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return elem
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else:
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foundcount += 1
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candidates = None
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return None
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def parse_command(command):
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args = shlex.split(command, posix=True)
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return args
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currchildren = None
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def print_result(res):
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if 'errorcode' in res or 'error' in res:
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print res['error']
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return
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if 'databynode' in res:
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print_result(res['databynode'])
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return
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for key in res.iterkeys():
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notes = []
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if res[key] is None:
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attrstr = '%s=""' % key
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elif type(res[key]) == list:
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attrstr = '%s=%s' % (key, recurse_format(res[key]))
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elif 'value' in res[key] and res[key]['value'] is not None:
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attrstr = '%s="%s"' % (key, res[key]['value'])
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elif 'value' in res[key] and res[key]['value'] is None:
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attrstr = '%s=""' % key
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elif 'isset' in res[key] and res[key]['isset']:
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attrstr = '%s="********"' % key
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elif 'isset' in res[key] or not res[key]:
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attrstr = '%s=""' % key
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else:
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sys.stdout.write('{0}: '.format(key))
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print_result(res[key])
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continue
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if res[key] is not None and 'inheritedfrom' in res[key]:
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notes.append(
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'Inherited from %s' % res[key]['inheritedfrom'])
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if res[key] is not None and 'expression' in res[key]:
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notes.append(
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('Derived from expression "%s"' %
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res[key]['expression']))
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if notes:
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notestr = '(' + ', '.join(notes) + ')'
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output = '{0:<40} {1:>39}'.format(attrstr, notestr)
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else:
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output = attrstr
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try:
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print(output)
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except (UnicodeDecodeError, UnicodeEncodeError):
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print(output.encode('utf-8'))
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def do_command(command, server):
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global exitcode
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global target
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global currconsole
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global currchildren
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exitcode = 0
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argv = parse_command(command)
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if len(argv) == 0:
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return
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argv[0] = argv[0].lower()
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if argv[0] == 'exit':
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sys.exit(0)
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elif argv[0] == 'cd':
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otarget = target
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if len(argv) > 1:
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target = fullpath_target(argv[1], forcepath=True)
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else: # cd by itself, go 'home'
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target = '/'
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for res in session.read(target, server):
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if 'errorcode' in res:
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exitcode = res['errorcode']
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if 'error' in res:
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sys.stderr.write(target + ': ' + res['error'] + '\n')
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target = otarget
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elif argv[0] in ('cat', 'show', 'ls', 'dir'):
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if len(argv) > 1:
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targpath = fullpath_target(argv[1])
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else:
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targpath = target
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for res in session.read(targpath):
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if 'item' in res: # a link relation
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if type(res['item']) == dict:
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print res['item']["href"]
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else:
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for item in res['item']:
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print item["href"]
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else: # generic attributes to list
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if 'error' in res:
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sys.stderr.write(res['error'] + '\n')
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if 'errorcode' in res:
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exitcode = res['errorcode']
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continue
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print_result(res)
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elif argv[0] == 'start':
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targpath = fullpath_target(argv[1])
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nodename = targpath.split('/')[-3]
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currconsole = targpath
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startrequest = {'operation': 'start', 'path': targpath,
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'parameters': {}}
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for param in argv[2:]:
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(parmkey, parmval) = param.split("=")
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startrequest['parameters'][parmkey] = parmval
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tlvdata.send(
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session.connection, startrequest)
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status = tlvdata.recv(session.connection)
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if 'error' in status:
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if 'errorcode' in status:
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exitcode = status['errorcode']
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sys.stderr.write('Error: ' + status['error'] + '\n')
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while '_requestdone' not in status:
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status = tlvdata.recv(session.connection)
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return
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startconsole(nodename)
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return
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elif argv[0] == 'set':
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setvalues(argv[1:])
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elif argv[0] == 'create':
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createresource(argv[1:])
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elif argv[0] in ('rm', 'delete', 'remove'):
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delresource(argv[1])
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elif argv[0] in ('unset', 'clear'):
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clearvalues(argv[1], argv[2:])
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elif argv[0] == 'shutdown':
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shutdown()
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else:
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sys.stderr.write("%s: command not found...\n" % argv[0])
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def shutdown():
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tlvdata.send(session.connection, {'operation': 'shutdown', 'path': '/'})
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def createresource(args):
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resname = args[0]
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attribs = args[1:]
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keydata = parameterize_attribs(attribs)
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if keydata is None:
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return
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targpath = fullpath_target(resname)
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collection, _, resname = targpath.rpartition('/')
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keydata['name'] = resname
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makecall(session.create, (collection, keydata))
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def makecall(callout, args):
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global exitcode
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for response in callout(*args):
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if 'error' in response:
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if 'errorcode' in response:
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exitcode = response['errorcode']
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sys.stderr.write('Error: ' + response['error'] + '\n')
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def clearvalues(resource, attribs):
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global exitcode
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targpath = fullpath_target(resource)
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keydata = {}
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for attrib in attribs:
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keydata[attrib] = None
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for res in session.update(targpath, keydata):
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if 'error' in res:
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if 'errorcode' in res:
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exitcode = res['errorcode']
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sys.stderr.write('Error: ' + res['error'] + '\n')
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def delresource(resname):
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resname = fullpath_target(resname)
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makecall(session.delete, (resname,))
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def setvalues(attribs):
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global exitcode
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if '=' in attribs[0]: # going straight to attribute
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resource = attribs[0][:attribs[0].index("=")]
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if '/' in resource:
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lastslash = resource.rindex('/')
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attribs[0] = attribs[0][lastslash + 1:]
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else: # an actual resource
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resource = attribs[0]
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attribs = attribs[1:]
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keydata = parameterize_attribs(attribs)
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if not keydata:
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return
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targpath = fullpath_target(resource)
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for res in session.update(targpath, keydata):
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if 'error' in res:
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if 'errorcode' in res:
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exitcode = res['errorcode']
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sys.stderr.write('Error: ' + res['error'] + '\n')
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print_result(res)
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def parameterize_attribs(attribs):
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keydata = {}
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for attrib in attribs:
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if '=' not in attrib:
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sys.stderr.write("Invalid syntax %s\n" % attrib)
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return None
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key = attrib[:attrib.index("=")]
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value = attrib[attrib.index("=") + 1:]
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if key == 'groups':
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value = value.split(',')
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keydata[key] = value
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return keydata
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def fullpath_target(currpath, forcepath=False):
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global target
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if currpath == '':
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return target
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pathcomponents = currpath.split("/")
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if pathcomponents[-1] == "": # preserve path
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forcepath = True
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if pathcomponents[0] == "": # absolute path
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ntarget = currpath
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else:
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targparts = target.split("/")[:-1]
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for component in pathcomponents:
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if component in ('.', ''): # ignore these
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continue
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elif component == '..':
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if len(targparts) > 0:
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del targparts[-1]
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else:
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targparts.append(component)
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if forcepath and (len(targparts) == 0 or targparts[-1] != ""):
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targparts.append('')
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ntarget = '/'.join(targparts)
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if forcepath and (len(ntarget) == 0 or ntarget[-1] != '/'):
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ntarget += '/'
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return ntarget
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def startconsole(nodename):
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global inconsole
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global consolename
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global didconsole
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didconsole = True
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consolename = nodename
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tty.setraw(sys.stdin.fileno())
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currfl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
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fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, currfl | os.O_NONBLOCK)
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inconsole = True
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def quitconfetty(code=0, fullexit=False, fixterm=True):
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global inconsole
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global currconsole
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global didconsole
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if fixterm or didconsole:
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currfl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
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fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, currfl ^ os.O_NONBLOCK)
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if oldtcattr is not None:
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termios.tcsetattr(sys.stdin.fileno(), termios.TCSANOW, oldtcattr)
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if fullexit:
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sys.exit(code)
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else:
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tlvdata.send(session.connection, {'operation': 'stop',
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'path': currconsole})
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inconsole = False
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def conserver_command(filehandle, command):
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# x - conserver has that as 'show baud', I am inclined to replace that with
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# 'request exclusive'
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# b - conserver has that as 'broadcast message', I'm tempted to use that
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# for break
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# r - replay
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# p - replay (this is the one I've always used)
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# f - force attach read/write
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# a - attach read/write
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# s - spy mode
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# l[n] - send a particular break, tempted to do l0 for compatibility
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# o - reopen tty, this should mean reconnect console
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# d - down a console... never used this...
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# L - toggle logging
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# w - who is on console
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while not command:
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ready, _, _ = select.select((filehandle,), (), (), 1)
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if ready:
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command += filehandle.read()
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if command[0] == '.':
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print("disconnect]\r")
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quitconfetty(fullexit=consoleonly)
|
|
elif command[0] == 'o':
|
|
tlvdata.send(session.connection, {'operation': 'reopen',
|
|
'path': currconsole})
|
|
print('reopen]\r')
|
|
elif command[0] == 'b':
|
|
tlvdata.send(session.connection, {'operation': 'break',
|
|
'path': currconsole})
|
|
print("break sent]\r")
|
|
elif command[0] == '?':
|
|
print("help]\r")
|
|
print(". disconnect\r")
|
|
print("b break\r")
|
|
print("o reopen\r")
|
|
print("<cr> abort command\r")
|
|
elif command[0] == '\x0d':
|
|
print("ignored]\r")
|
|
else: # not a command at all..
|
|
print("unknown -- use '?']\r")
|
|
|
|
|
|
def check_escape_seq(currinput, filehandle):
|
|
while conserversequence.startswith(currinput):
|
|
if currinput.startswith(conserversequence): # We have full sequence
|
|
sys.stdout.write("[")
|
|
sys.stdout.flush()
|
|
return conserver_command(
|
|
filehandle, currinput[len(conserversequence):])
|
|
ready, _, _ = select.select((filehandle,), (), (), 3)
|
|
if not ready: # 3 seconds of no typing
|
|
break
|
|
currinput += filehandle.read()
|
|
return currinput
|
|
|
|
parser = optparse.OptionParser()
|
|
parser.add_option("-s", "--server", dest="netserver",
|
|
help="Confluent instance to connect to",
|
|
metavar="SERVER:PORT")
|
|
parser.add_option("-c", "--control", dest="controlpath",
|
|
help="Path to offer terminal control",
|
|
metavar="PATH")
|
|
opts, shellargs = parser.parse_args()
|
|
|
|
username = None
|
|
passphrase = None
|
|
def server_connect():
|
|
global session, username, passphrase
|
|
if opts.controlpath:
|
|
termhandler.TermHandler(opts.controlpath)
|
|
if opts.netserver: # going over a TLS network
|
|
session = client.Command(opts.netserver)
|
|
elif 'CONFLUENT_HOST' in os.environ:
|
|
session = client.Command(os.environ['CONFLUENT_HOST'])
|
|
else: # unix domain
|
|
session = client.Command()
|
|
|
|
# Next stop, reading and writing from whichever of stdin and server goes first.
|
|
#see pyghmi code for solconnect.py
|
|
if not session.authenticated and username is not None:
|
|
session.authenticate(username, passphrase)
|
|
if not session.authenticated and 'CONFLUENT_USER' in os.environ:
|
|
username = os.environ['CONFLUENT_USER']
|
|
passphrase = os.environ['CONFLUENT_PASSPHRASE']
|
|
session.authenticate(username, passphrase)
|
|
while not session.authenticated:
|
|
username = raw_input("Name: ")
|
|
readline.clear_history()
|
|
passphrase = getpass.getpass("Passphrase: ")
|
|
session.authenticate(username, passphrase)
|
|
|
|
|
|
try:
|
|
server_connect()
|
|
except EOFError, KeyboardInterrupt:
|
|
sys.exit(0)
|
|
except socket.gaierror:
|
|
sys.stderr.write('Could not connect to confluent\n')
|
|
sys.exit(1)
|
|
# clear on start can help with readable of TUI, but it
|
|
# can be annoying, so for now don't do it.
|
|
# sys.stdout.write('\x1b[H\x1b[J')
|
|
# sys.stdout.flush()
|
|
|
|
readline.parse_and_bind("tab: complete")
|
|
readline.parse_and_bind("set bell-style none")
|
|
readline.set_completer(completer)
|
|
doexit = False
|
|
inconsole = False
|
|
pendingcommand = ""
|
|
if len(shellargs) == 1 and ' ' not in shellargs[0]: # straight to node console
|
|
consoleonly = True
|
|
do_command("start /nodes/%s/console/session" % shellargs[0], netserver)
|
|
doexit = True
|
|
elif shellargs:
|
|
command = " ".join(shellargs)
|
|
do_command(command, netserver)
|
|
quitconfetty(fullexit=True, fixterm=False)
|
|
|
|
while inconsole or not doexit:
|
|
if inconsole:
|
|
rdylist, _, _ = select.select(
|
|
(sys.stdin, session.connection), (), (), 60)
|
|
for fh in rdylist:
|
|
if fh == session.connection:
|
|
# this only should get called in the
|
|
# case of a console session
|
|
# each command should slurp up all relevant
|
|
# recv potential
|
|
#fh.read()
|
|
try:
|
|
data = tlvdata.recv(fh)
|
|
except Exception:
|
|
data = None
|
|
if type(data) == dict:
|
|
updatestatus(data)
|
|
continue
|
|
if data is not None:
|
|
sys.stdout.write(data)
|
|
now = time.time()
|
|
if ('showtime' not in laststate or
|
|
(now // 60) != laststate['showtime'] // 60):
|
|
# don't bother churning if minute does not change
|
|
laststate['showtime'] = now
|
|
updatestatus()
|
|
sys.stdout.flush()
|
|
else:
|
|
deadline = 5
|
|
connected = False
|
|
while not connected and deadline > 0:
|
|
try:
|
|
server_connect()
|
|
connected = True
|
|
except socket.gaierror, socket.error:
|
|
pass
|
|
if not connected:
|
|
time.sleep(1)
|
|
deadline -=1
|
|
if connected:
|
|
do_command(
|
|
"start /nodes/%s/console/session skipreplay=True" % consolename,
|
|
netserver)
|
|
else:
|
|
doexit = True
|
|
inconsole = False
|
|
sys.stdout.write("\r\n[remote disconnected]\r\n")
|
|
break
|
|
else:
|
|
myinput = fh.read()
|
|
myinput = check_escape_seq(myinput, fh)
|
|
if myinput:
|
|
tlvdata.send(session.connection, myinput)
|
|
else:
|
|
currcommand = prompt()
|
|
try:
|
|
do_command(currcommand, netserver)
|
|
except socket.error:
|
|
try:
|
|
server_connect()
|
|
do_command(currcommand, netserver)
|
|
except socket.error:
|
|
doexit = True
|
|
sys.stdout.write('Lost connection to server')
|
|
quitconfetty(fullexit=True)
|