pax_global_header00006660000000000000000000000064131240754750014522gustar00rootroot0000000000000052 comment=e8741dcfcd179c209f416f680f99b2035d2827c1 zktop-1.0.0/000077500000000000000000000000001312407547500126675ustar00rootroot00000000000000zktop-1.0.0/.gitignore000066400000000000000000000000241312407547500146530ustar00rootroot00000000000000*.pyc *.ropeproject zktop-1.0.0/LICENSE.txt000066400000000000000000000261361312407547500145220ustar00rootroot00000000000000 Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. 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We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. zktop-1.0.0/README.textile000066400000000000000000000056201312407547500152270ustar00rootroot00000000000000h1. ZooKeeper top *Author: "Patrick Hunt":http://people.apache.org/~phunt/* (follow me on "twitter":http://twitter.com/phunt) h2. Summary "This project":http://github.com/phunt/zktop provides a unix "top" like utility for ZooKeeper. It is compatible with Python2.6, Python2.7 and Python3. h3. Example Running: 
./zktop.py --servers "localhost:2181,localhost:2182,localhost:2183"
or - omitting the port numbers, defaulting to 2181 - 
./zktop.py --servers "server1,server2,server3"
or, for a ZK-style configuration file: 
./zktop.py --config zk.conf
shows a screen like: 
Ensemble -- nodecount:10 zxid:0x1300000001 sessions:4

SERVER           PORT M      OUTST    RECVD     SENT CONNS MINLAT AVGLAT MAXLAT
localhost        2181 F          0       93       92     2      2      7     13
localhost        2182 F          0       37       36     1      0      0      0
localhost        2183 L          0       36       35     1      0      0      0

CLIENT           PORT I   QUEUE RECVD  SENT
127.0.0.1       34705 1       0    56    56
127.0.0.1       35943 1       0     1     0
127.0.0.1       33999 1       0     1     0
127.0.0.1       37988 1       0     1     0
h3. What's Apache ZooKeeper? From the "official site":http://hadoop.apache.org/zookeeper/: "ZooKeeper is a high-performance coordination service for distributed applications." It exposes common services - such as naming, configuration management, synchronization, and group services - in a simple interface so you don't have to write them from scratch. You can use it off-the-shelf to implement consensus, group management, leader election, and presence protocols. h2. zktop.py 0) Top line is overall cluster status 1-n) Lines 1-n are for the n servers n+1 and below are for client connections h3. Usage 
Usage: zktop.py [options]

Options:
  -h, --help            show this help message and exit
  --servers=SERVERS     comma separated list of host:port (default
                        localhost:2181)
  -n, --names           resolve session name from ip (default False)
  --fix_330             workaround for a bug in ZK 3.3.0
  -v VERBOSITY, --verbosity=VERBOSITY
                        log level verbosity (DEBUG, INFO, WARN(ING), ERROR, CRITICAL/FATAL))
  -l LOGFILE, --logfile=LOGFILE
                        directory in which to place log file, or empty for
                        none
  -c CONFIGFILE, --config=CONFIGFILE
                        zookeeper configuration file to lookup servers from
--fix_330 works around a bug in ZooKeeper 3.3.0, it is only necessary if running the server against that version of ZooKeeper. The screen refreshes every 3 seconds. * 'h' help * 'q' quits * 'r' resets the server stats * spacebar updates immediately h2. PyPi zktop is now installable from PyPi 
pip install zktop
h2. License This project is licensed under the Apache License Version 2.0 zktop-1.0.0/setup.cfg000066400000000000000000000003751312407547500145150ustar00rootroot00000000000000[bdist_wheel] # This flag says that the code is written to work on both Python 2 and Python # 3. If at all possible, it is good practice to do this. If you cannot, you # will need to generate wheels for each Python version that you support. universal=1 zktop-1.0.0/setup.py000066400000000000000000000073221312407547500144050ustar00rootroot00000000000000"""top for Apache ZooKeeper See: https://github.com/phunt/zktop http://zookeeper.apache.org/ """ # Always prefer setuptools over distutils from setuptools import setup, find_packages # To use a consistent encoding from codecs import open from os import path here = path.abspath(path.dirname(__file__)) # Get the long description from the README file with open(path.join(here, 'README.textile'), encoding='utf-8') as f: long_description = f.read() setup( name='zktop', # Versions should comply with PEP440. For a discussion on single-sourcing # the version across setup.py and the project code, see # https://packaging.python.org/en/latest/single_source_version.html version='1.0.0', description='top for Apache ZooKeeper', long_description=long_description, # The project's main homepage. url='https://github.com/phunt/zktop', # Author details author='Patrick Hunt', author_email='phunt1@gmail.com', # Choose your license license='Apache v2', # See https://pypi.python.org/pypi?%3Aaction=list_classifiers classifiers=[ # How mature is this project? Common values are # 3 - Alpha # 4 - Beta # 5 - Production/Stable 'Development Status :: 5 - Production/Stable', # Indicate who your project is intended for 'Intended Audience :: System Administrators', 'Topic :: System :: Monitoring', # Pick your license as you wish (should match "license" above) 'License :: OSI Approved :: Apache Software License', # Specify the Python versions you support here. In particular, ensure # that you indicate whether you support Python 2, Python 3 or both. 'Programming Language :: Python :: 2', 'Programming Language :: Python :: 3', ], # What does your project relate to? keywords='zookeeper top monitoring', # You can just specify the packages manually here if your project is # simple. Or you can use find_packages(). #packages=find_packages(exclude=['contrib', 'docs', 'tests']), # Alternatively, if you want to distribute just a my_module.py, uncomment # this: py_modules=["zktop"], # List run-time dependencies here. These will be installed by pip when # your project is installed. For an analysis of "install_requires" vs pip's # requirements files see: # https://packaging.python.org/en/latest/requirements.html #install_requires=['peppercorn'], # List additional groups of dependencies here (e.g. development # dependencies). You can install these using the following syntax, # for example: # $ pip install -e .[dev,test] #extras_require={ # 'dev': ['check-manifest'], # 'test': ['coverage'], #}, # If there are data files included in your packages that need to be # installed, specify them here. If using Python 2.6 or less, then these # have to be included in MANIFEST.in as well. #package_data={ # 'sample': ['package_data.dat'], #}, # Although 'package_data' is the preferred approach, in some case you may # need to place data files outside of your packages. See: # http://docs.python.org/3.4/distutils/setupscript.html#installing-additional-files # noqa # In this case, 'data_file' will be installed into '/my_data' #data_files=[('my_data', ['data/data_file'])], python_requires='>=2.6', # To provide executable scripts, use entry points in preference to the # "scripts" keyword. Entry points provide cross-platform support and allow # pip to create the appropriate form of executable for the target platform. entry_points={ 'console_scripts': [ 'zktop=zktop:main_func', ], }, ) zktop-1.0.0/zktop.py000077500000000000000000000332161312407547500144200ustar00rootroot00000000000000#!/usr/bin/env python # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from optparse import OptionParser # TODO use argparse instead import threading import sys IS_PYTHON2 = sys.version_info[0] == 2 if IS_PYTHON2: import Queue from StringIO import StringIO strToLong = lambda str, base = 10: long(str, base) else: # Python 3 import queue as Queue from io import StringIO strToLong = lambda str, base = 10: int(str, base) import socket import signal import re import logging as LOG if sys.platform == 'win32': print("Cannot run natively on Windows due to missing curses package. Try running in a cygwin shell instead!"); sys.exit(1) import curses ZK_DEFAULT_PORT = 2181 usage = "usage: %prog [options]" parser = OptionParser(usage=usage) parser.add_option("", "--servers", dest="servers", default="localhost:%s" % ZK_DEFAULT_PORT, help="comma separated list of host:port (default localhost:%d)" % ZK_DEFAULT_PORT) parser.add_option("-n", "--names", action="store_true", dest="names", default=False, help="resolve session name from ip (default False)") parser.add_option("", "--fix_330", action="store_true", dest="fix_330", default=False, help="workaround for a bug in ZK 3.3.0") parser.add_option("-v", "--verbosity", dest="verbosity", default="DEBUG", help="log level verbosity (DEBUG, INFO, WARN(ING), ERROR, CRITICAL/FATAL)") parser.add_option("-l", "--logfile", dest="logfile", default=None, help="directory in which to place log file, or empty for none") parser.add_option("-c", "--config", dest="configfile", default=None, help="zookeeper configuration file to lookup servers from") parser.add_option("-t", "--timeout", dest="timeout", default=None, help="connection timeout to zookeeper instance") (options, args) = parser.parse_args() if options.logfile: LOG.basicConfig(filename=options.logfile, level=getattr(LOG, options.verbosity)) else: LOG.disable(LOG.CRITICAL) resized_sig = False # threads to get server data # UI class # track current data and historical class Session(object): def __init__(self, session, server_id): # allow both ipv4 and ipv6 addresses m = re.search('/([\da-fA-F:\.]+):(\d+)\[(\d+)\]\((.*)\)', session) self.host = m.group(1) self.port = m.group(2) self.server_id = server_id self.interest_ops = m.group(3) for d in m.group(4).split(","): k,v = d.split("=") setattr(self, k, v) class ZKServer(object): def __init__(self, server, server_id): self.server_id = server_id if ':' in server: self.host, self.port = server.split(':')[0], int(server.split(':')[1]) else: # fallback to default if user doesn't specify port number self.host, self.port = server, ZK_DEFAULT_PORT try: stat = send_cmd(self.host, self.port, b'stat\n') sio = StringIO(stat) line = sio.readline() m = re.search('.*: (\d+\.\d+\.\d+)-.*', line) # e.g. nodecount:0 zxid:0x0 sessions:0o att self.version = m.group(1) # raise Exception when stat response empty sio.readline() self.sessions = [] for line in sio: if not line.strip(): break self.sessions.append(Session(line.strip(), server_id)) for line in sio: attr, value = line.split(':') attr = attr.strip().replace(" ", "_").replace("/", "_").lower() setattr(self, attr, value.strip()) self.min_latency, self.avg_latency, self.max_latency = self.latency_min_avg_max.split("/") self.unavailable = False except: # e.g., when server responds with '' (not reachable) self.unavailable = True self.mode = "Unavailable" self.sessions = [] self.version = "Unknown" return def send_cmd(host, port, cmd): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) if options.timeout: s.settimeout(float(options.timeout)) s.connect((host, port)) result = [] try: s.sendall(cmd) # shutting down the socket write side helps ensure that we don't end up with TIME_WAIT sockets if not options.fix_330: s.shutdown(socket.SHUT_WR) while True: data = s.recv(4096) if not data: break data = data.decode() result.append(data) finally: s.close() return "".join(result) q_stats = Queue.Queue() p_wakeup = threading.Condition() def wakeup_poller(): p_wakeup.acquire() p_wakeup.notifyAll() p_wakeup.release() def reset_server_stats(server): host, port = server.split(':') send_cmd(host, port, b'srst\n') server_id = 0 class StatPoller(threading.Thread): def __init__(self, server): self.server = server global server_id self.server_id = server_id server_id += 1 threading.Thread.__init__(self) def run(self): p_wakeup.acquire() while True: s = ZKServer(self.server, self.server_id) q_stats.put(s) p_wakeup.wait(3.0) # no need - never hit here except exit - "p_wakeup.release()" # also, causes error on console class BaseUI(object): def __init__(self, win): self.win = win global mainwin self.maxy, self.maxx = mainwin.getmaxyx() self.resize(self.maxy, self.maxx) def resize(self, maxy, maxx): LOG.debug("resize called y %d x %d" % (maxy, maxx)) self.maxy = maxy self.maxx = maxx def addstr(self, y, x, line, flags = 0): LOG.debug("addstr with maxx %d" % (self.maxx)) self.win.addstr(y, x, line[:self.maxx-1], flags) self.win.clrtoeol() self.win.noutrefresh() class SummaryUI(BaseUI): def __init__(self, height, width, server_count): BaseUI.__init__(self, curses.newwin(1, width, 0, 0)) self.session_counts = [0 for i in range(server_count)] self.node_counts = [0 for i in range(server_count)] self.zxids = [0 for i in range(server_count)] def update(self, s): self.win.erase() if s.unavailable: self.session_counts[s.server_id] = 0 self.node_counts[s.server_id] = 0 self.zxids[s.server_id] = 0 else: self.session_counts[s.server_id] = len(s.sessions) self.node_counts[s.server_id] = int(s.node_count) self.zxids[s.server_id] = strToLong(s.zxid, 16) nc = max(self.node_counts) zxid = max(self.zxids) sc = sum(self.session_counts) self.addstr(0, 0, "Ensemble -- nodecount:%d zxid:0x%x sessions:%d" % (nc, zxid, sc)) class ServerUI(BaseUI): def __init__(self, height, width, server_count): BaseUI.__init__(self, curses.newwin(server_count + 2, width, 1, 0)) def resize(self, maxy, maxx): BaseUI.resize(self, maxy, maxx) self.addstr(1, 0, "ID SERVER PORT M OUTST RECVD SENT CONNS MINLAT AVGLAT MAXLAT", curses.A_REVERSE) def update(self, s): if s.unavailable: self.addstr(s.server_id + 2, 0, "%-2s %-15s %5s %s" % (s.server_id, s.host[:15], s.port, s.mode[:1].upper())) else: self.addstr(s.server_id + 2, 0, "%-2s %-15s %5s %s %8s %8s %8s %5d %6s %6s %6s" % (s.server_id, s.host[:15], s.port, s.mode[:1].upper(), s.outstanding, s.received, s.sent, len(s.sessions), s.min_latency, s.avg_latency, s.max_latency)) class SessionUI(BaseUI): def __init__(self, height, width, server_count): BaseUI.__init__(self, curses.newwin(height - server_count - 3, width, server_count + 3, 0)) self.sessions = [[] for i in range(server_count)] self.ip_to_hostname = {} def hostname(self, session): if session.host not in self.ip_to_hostname: hostname = socket.getnameinfo((session.host, int(session.port)), 0)[0] self.ip_to_hostname[session.host] = hostname return self.ip_to_hostname[session.host] def update(self, s): self.win.erase() self.addstr(1, 0, "CLIENT PORT S I QUEUED RECVD SENT", curses.A_REVERSE) self.sessions[s.server_id] = s.sessions items = [] for l in self.sessions: items.extend(l) items.sort(key=lambda x: int(x.queued), reverse=True) for i, session in enumerate(items): try: #ugh, need to handle if slow - thread for async resolver? host = self.hostname(session) if options.names else session.host self.addstr(i + 2, 0, "%-15s %5s %1s %1s %8s %8s %8s" % (host[:15], session.port, session.server_id, session.interest_ops, session.queued, session.recved, session.sent)) except: break mainwin = None class Main(object): def __init__(self, servers): self.servers = servers.split(",") def show_ui(self, stdscr): global mainwin mainwin = stdscr curses.use_default_colors() # w/o this for some reason takes 1 cycle to draw wins stdscr.refresh() signal.signal(signal.SIGWINCH, sigwinch_handler) TIMEOUT = 250 stdscr.timeout(TIMEOUT) server_count = len(self.servers) maxy, maxx = stdscr.getmaxyx() uis = (SummaryUI(maxy, maxx, server_count), ServerUI(maxy, maxx, server_count), SessionUI(maxy, maxx, server_count)) # start the polling threads pollers = [StatPoller(server) for server in self.servers] for poller in pollers: poller.setName("PollerThread:" + poller.server) poller.setDaemon(True) poller.start() LOG.debug("starting main loop") global resized_sig flash = None while True: try: if resized_sig: resized_sig = False self.resize(uis) wakeup_poller() while not q_stats.empty(): zkserver = q_stats.get_nowait() for ui in uis: ui.update(zkserver) ch = stdscr.getch() if 0 < ch <= 255: if ch == ord('q'): return elif ch == ord('h'): flash = "Help: q:quit r:reset stats spc:refresh" flash_count = 1000/TIMEOUT * 5 elif ch == ord('r'): for server in self.servers: try: reset_server_stats(server) except: pass flash = "Server stats reset" flash_count = 1000/TIMEOUT * 5 wakeup_poller() elif ch == ord(' '): wakeup_poller() stdscr.move(1, 0) if flash: stdscr.addstr(1, 0, flash) flash_count -= 1 if flash_count == 0: flash = None stdscr.clrtoeol() curses.doupdate() except KeyboardInterrupt: break def resize(self, uis): curses.endwin() curses.doupdate() global mainwin mainwin.refresh() maxy, maxx = mainwin.getmaxyx() for ui in uis: ui.resize(maxy, maxx) def sigwinch_handler(*nada): LOG.debug("sigwinch called") global resized_sig resized_sig = True def read_zk_config(filename): config = {} f = open(filename, 'r') try: for line in f: if line.rstrip() and not line.startswith('#'): k, v = tuple(line.replace(' ', '').strip().split('=', 1)) config[k] = v except IOError as e: print("Unable to open `{0}': I/O error({1}): {2}".format(filename, e.errno, e.strerror)) finally: f.close() return config def get_zk_servers(filename): if filename: config = read_zk_config(options.configfile) client_port = config['clientPort'] return ','.join("%s:%s" % (v.split(':', 1)[0], client_port) for k, v in config.items() if k.startswith('server.')) else: return ','.join("%s:%s" % (s.strip(), ZK_DEFAULT_PORT) if not ':' in s else "%s" % s for s in options.servers.split(',', 1)) def main_func(): LOG.debug("startup") ui = Main(get_zk_servers(options.configfile)) curses.wrapper(ui.show_ui) if __name__ == '__main__': main_func()