fishpoll-0.1.7/000077500000000000000000000000001213556672200133505ustar00rootroot00000000000000fishpoll-0.1.7/COPYING000066400000000000000000000432541213556672200144130ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. 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You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. 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If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 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 2 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. fishpoll-0.1.7/Makefile000066400000000000000000000004751213556672200150160ustar00rootroot00000000000000install: for d in /usr/bin /usr/sbin /etc/init.d/ /etc/fishpoll.d ; do \ test -d $(DESTDIR)$$d || mkdir -m 0755 -p $(DESTDIR)$$d ; \ done install -m 0755 fishpoke $(DESTDIR)/usr/bin/fishpoke install -m 0755 fishpolld $(DESTDIR)/usr/sbin/fishpolld install -m 0755 fishpoll.init $(DESTDIR)/etc/init.d/fishpoll fishpoll-0.1.7/README000066400000000000000000000061061213556672200142330ustar00rootroot00000000000000Fishpoll ======= Fishpoll is meant to deal with a common situation. You have a data source (a version control repository, a database, etc). You have something built from that data source (a web site, say). When the data source changes, you want to rebuild. The traditional thing to do is to run your update out of a cron job. But even if you are running the script every minute, that's still a whole minute you have to wait. So, fishpoll acts as a network daemon that allows checking to be triggered explicitly by sending a message. The latest version of this file can be found at: http://git.fishsoup.net/cgit/fishpoll/plain/README To get the latest version of Fishpoll: git clone git://git.fishsoup.net/fishpoll Send patches to Owen Taylor Topics and Subjects =================== The basic unit of checking with Fishpoll is the 'topic'. Each topic has a handler script that is run to "check" that topic. Sometimes you might want to have multiple things handled by the same topic handler. When a topic is triggered over the network, a a list of "subjects" can be provided. (If no subject is provided, a default subject of DEFAULT is used.) These are simply passed as additional arguments to the handler script. Topic handlers ============== fishpolld looks for in its handler directory (default /etc/fishpoll.d) for topic handlers. Each topic handler is simply an executable script named the same as the topic. There can also be a configuration file for a topic named as the topic name followed by '.conf'. Only one instance of a handler script is run at a time. If a topic is triggered (either from the network or from a configured interval) while the previous instance is running, the subjects are queued up and run when the previous instance finishes. Topic configuration example =========================== [fishpoll] # Whether to run the handler once when fishpolld is started. Defaults # to False on_start = True # How often to run the handler (in seconds) if not otherwise triggered. # A negative value (the default) means never. interval = 500 fishpolld usage ============== Usage: fishpolld [options] Options: -d, --debug If specified, do not daemonize and run in the background. Logging information (including stuff logged at the debug level) will be written to standard out. --pid-file=PID_FILE A filename into which to write the PID of daemon. Defaults to /var/run/fishpolld.pid. If empty, the PID will not be written. --handler-dir=HANDLER_DIR The directory in which to look for handler scripts and configuration scripts. --listen=HOST[:PORT] The address and (optionally) port to listen on. Defaults to '*' meaning to listen on all interfaces. If the port is not specified, uses port 27527. fishpolld is very much a standard Unix daemon. It would normally be started from an init script. fishpoke usage ============== Usage: fishpoke HOST[:PORT] TOPIC [SUBJECT...] Options: No options currently License ======= Fishpoll is copyright (C) Owen Taylor 2009 and licensed under the GNU General Public License. See the file COPYING for details. fishpoll-0.1.7/fishpoke000077500000000000000000000051031213556672200151050ustar00rootroot00000000000000#!/usr/bin/python # # fishpoll - client for fishpolld server # # Copyright (C) 2008 Owen Taylor # # 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 2 # 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, If not, see # http://www.gnu.org/licenses/. from optparse import OptionParser import re import select import sys import socket from StringIO import StringIO import time FISHPOLL_PORT = 27527 def read_all(s, max_bytes, timeout): start = time.time() bytes_read = 0 buf = StringIO() while True: now = time.time() to_wait = start + timeout - now if to_wait <= 0: raise RuntimeError("Timed out") if bytes_read >= max_bytes: raise RuntimeError("Too much data") read_ready, _, _, = select.select([s.fileno()], [], [], to_wait) if read_ready: bytes = s.recv(max_bytes - bytes_read) if (bytes == ""): break bytes_read += len(bytes) buf.write(bytes) return buf.getvalue() def main(): global options usage = "usage: %prog HOST[:PORT] TOPIC [SUBJECT...]" parser = OptionParser(usage=usage) options, args = parser.parse_args() if len(args) < 2: parser.print_usage() sys.exit(1) host = args[0] topic = args[1] subjects = args[2:] m = re.match(r"^(.*?)(?::(\d+))?$", host) host = m.group(1) if m.group(2) != None: port = int(m.group(2)) else: port = FISHPOLL_PORT sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) try: sock.connect((host, port)) except socket.error, e: print >>sys.stderr, "Can't connect to server: %s" % e.args[1] sys.exit(1) message = topic + " " + " ".join(subjects) + "\n" try: sock.sendall(message) except socket.error, e: print >>sys.stderr, "Can't send message: %s" % e.args[1] sys.exit(1) response = read_all(sock, max_bytes=512, timeout=300) if response.strip() != "OK": sys.stderr.write(response) sys.exit(1) sock.close() if __name__ == '__main__': main() fishpoll-0.1.7/fishpoll.init000077500000000000000000000027521213556672200160660ustar00rootroot00000000000000#!/bin/sh # # fishpoll: Fishpoll daemon # # chkconfig: - 99 05 # description: fishpolld is a daemon to run scripts when triggered from the network # # processname: fishpolld # pidfile: /var/run/fishpolld.pid # ### BEGIN INIT INFO # Provides: fishpoll # Required-Start: $syslog $network # Required-Stop: $syslog $network # Description: fishpolld is a daemon to run scripts when triggered from the network ### END INIT INFO prefix=/usr exec_prefix=/usr sbindir=/usr/sbin FISHPOLLD_BIN=${sbindir}/fishpolld # Source function library. . /etc/rc.d/init.d/functions # Source network configuration . /etc/sysconfig/network processname=fishpolld servicename=fishpoll pidfile=/var/run/fishpolld.pid RETVAL=0 start() { if [ -e /etc/sysconfig/fishpolld ] ; then . /etc/sysconfig/fishpolld fi echo -n $"Starting Fishpoll daemon: " daemon $FISHPOLLD_BIN --pid-file=$pidfile $OPTIONS echo RETVAL=$? [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$servicename } stop() { echo -n $"Stopping Fishpoll daemon: " killproc -p $pidfile $servicename RETVAL=$? echo if [ $RETVAL -eq 0 ]; then rm -f /var/lock/subsys/$servicename rm -f $pidfile fi } # See how we were called. case "$1" in start) start ;; stop) stop ;; status) status -p $pidfile $processname RETVAL=$? ;; restart) stop start ;; condrestart) if [ -f /var/lock/subsys/$servicename ]; then stop start fi ;; *) echo $"Usage: $0 {start|stop|status|restart|condrestart}" ;; esac exit $RETVAL fishpoll-0.1.7/fishpolld000077500000000000000000000353111213556672200152650ustar00rootroot00000000000000#!/usr/bin/python # # fishpolld - server to run scripts when triggered # # Copyright (C) 2008 Owen Taylor # # 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 2 # 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, If not, see # http://www.gnu.org/licenses/. from ConfigParser import RawConfigParser from optparse import OptionParser import os import random import re import select import signal import socket import subprocess from syslog import * import sys from StringIO import StringIO import time import traceback FISHPOLL_PORT = 27527 FISHPOLL_LISTEN = '*' FISHPOLL_PID_FILE = "/var/run/fishpolld.pid" FISHPOLL_HANDLER_DIR = "/etc/fishpoll.d" # Used to know whether we should remove the pid file on exit main_process = True # We use this instead of syslog when --debug is passed def debug_log(level, message): if level == LOG_ERR: level_str = "ERROR:" elif level == LOG_WARNING: level_str = "WARNING:" elif level == LOG_INFO: level_str = "INFO:" elif level == LOG_DEBUG: level_str = "DEBUG:" else: raise RuntimeException("Bad level") print level_str, message # Read the first line out of a socket (will read and discard some # data past the first line) def read_first_line(s, max_bytes, timeout): start = time.time() bytes_read = 0 buf = StringIO() while True: now = time.time() to_wait = start + timeout - now if to_wait <= 0: raise RuntimeError("Timed out") if bytes_read >= max_bytes: raise RuntimeError("Too much data") read_ready, _, _, = select.select([s.fileno()], [], [], to_wait) if read_ready: bytes = s.recv(max_bytes - bytes_read) if (bytes == ""): break bytes_read += len(bytes) buf.write(bytes) if bytes.find("\n") >= 0: break return buf.getvalue() # Standard double-fork daemonization def daemonize(): global main_process pid = os.fork() if pid > 0: main_process = False sys.exit(0) os.setsid() devnullin = os.open("/dev/null", os.O_RDONLY) os.close(0) os.dup2(devnullin, 0) os.close(devnullin) devnullout = os.open("/dev/null", os.O_WRONLY) os.close(1) os.dup2(devnullout, 1) os.close(2) os.dup2(devnullout, 2) os.close(devnullout) pid = os.fork() if pid > 0: main_process = False sys.exit(0) def write_pid_file(): if options.pid_file: try: pid_file = open(options.pid_file, "w") pid_file.write("%d\n" % os.getpid()) pid_file.close() except IOError, e: log(LOG_WARNING, "Cannot write pid to '%s': %s" % (options.pid_file, e.args[1])) class Topic: def __init__(self, server, name, handler_path): self.server = server self.name = name self.handler_path = handler_path self.filename = False self.pid = None self.stdout_fileno = None self.stdout_buffer = None self.stderr_fileno = None self.stderr_buffer = None self.pending_subjects = set() self.check_on_start = True self.check_interval = -1 conf_path = handler_path + ".conf" if os.path.exists(conf_path): log(LOG_DEBUG, "Reading configuration from %s" % (conf_path)) parser = RawConfigParser() parser.read(conf_path) if not parser.has_section("fishpoll"): log(LOG_WARNING, "%s is missing a [fishpoll] section" % (conf_path)) if parser.has_option("fishpoll", "on_start"): try: self.check_on_start = parser.getboolean("fishpoll", "on_start") except ValueError, e: log(LOG_WARNING, "on_start: %s" % (e,)) if parser.has_option("fishpoll", "interval"): try: self.check_interval = parser.getfloat("fishpoll", "interval") except ValueError, e: log(LOG_WARNING, "interval: %s" % (e,)) log(LOG_DEBUG, "on_start = %s" % self.check_on_start) log(LOG_DEBUG, "interval = %s" % self.check_interval) if self.check_interval >= 0: self.last_interval = time.time() - self.check_interval * random.random() def run_command(self): global main_process log(LOG_INFO, "Running handler for %s subjects=%s" % (self.name, ",".join(self.pending_subjects))) out_pipe = os.pipe() err_pipe = os.pipe() pid = os.fork() if pid > 0: self.pending_subjects = set() self.stdout_fileno = out_pipe[0] os.close(out_pipe[1]) self.stdout_buffer = StringIO() self.stderr_fileno = err_pipe[0] os.close(err_pipe[1]) self.stderr_buffer = StringIO() self.pid = pid else: main_process = False self.server.sock.close() devnull = os.open("/dev/null", os.O_RDONLY) os.close(0) os.dup2(devnull, 0) os.close(devnull) os.close(out_pipe[0]) os.close(1) os.dup2(out_pipe[1], 1) os.close(out_pipe[1]) os.close(err_pipe[0]) os.close(2) os.dup2(err_pipe[1], 2) os.close(err_pipe[1]) pid = os.fork() if pid > 0: _, status = os.waitpid(pid, 0) if status == 0: sys.exit(0) else: sys.exit(1) else: args = [self.name] args.extend(sorted(self.pending_subjects)) env = {} env['PATH'] = "/usr/local/bin:/bin:/usr/bin" env['TERM'] = "dumb" os.execve(self.handler_path, args, env) def add_subjects(self, subjects): self.pending_subjects.update(subjects) def _check_complete(self): if self.stderr_fileno != None or self.stdout_fileno != None: return _, status = os.waitpid(self.pid, 0) self.pid = None if status == 0: log(LOG_INFO, "Fishpoll of %s succeeded" % self.name) else: stderr = self.stderr_buffer.getvalue() if stderr: for line in stderr.split("\n"): if line != "": log(LOG_ERR, line) log(LOG_ERR, "Fishpoll of %s failed" % self.name) if len(self.pending_subjects) > 0: self.run_command() def read_stdout(self): bytes = os.read(self.stdout_fileno, 16384) if bytes == "": os.close(self.stdout_fileno) self.stdout_fileno = None else: self.stdout_buffer.write(bytes) self._check_complete() def read_stderr(self): bytes = os.read(self.stderr_fileno, 16384) if bytes == "": os.close(self.stderr_fileno) self.stderr_fileno = None else: self.stderr_buffer.write(bytes) self._check_complete() class Server: def __init__(self): self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # This allows reuse again immediately after we exit, even if # there still is a onnection still in the TIME_WAIT state self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) m = re.match(r"^(.*?)(?::(\d+))?$", options.listen.strip()) host = m.group(1) if m.group(2) != None: port = int(m.group(2)) else: port = FISHPOLL_PORT log(LOG_INFO, "Listening on %s:%s" % (host, port)) if host == '*': host = '' try: self.sock.bind((host, port)) except socket.error, e: print >>sys.stderr, "Can't bind to socket: %s" % e.args[1] sys.exit(1) self.sock.listen(3) # backlog of 3 self._read_topics() def _read_topics(self): self.topics = {} try: names = os.listdir(options.handler_dir) except OSError, e: log(LOG_WARNING, "Cannot read handlers from '%s': %s" % (options.handler_dir, e.args[1])) return for name in os.listdir(options.handler_dir): handler_path = os.path.join(options.handler_dir, name) if re.match(r".*~$", name): continue if re.match(r".*\.conf$", name): continue if re.match(r"^\.", name): continue if not re.match(r"^[A-Za-z0-9_]+$", name): log(LOG_WARNING, "Ignoring '%s', not a valid topic name" % handler_path) continue if not os.path.isfile(handler_path): log(LOG_WARNING, "Ignoring '%s', not a regular file" % handler_path) continue if not os.access(handler_path, os.X_OK): log(LOG_WARNING, "Ignoring '%s', not executable" % handler_path) continue self.topics[name] = Topic(self, name, handler_path) log(LOG_DEBUG, "Adding handler %s for topic %s" % (handler_path, name)) def read_command(self): topic = None conn, addr = self.sock.accept() try: try: res = read_first_line(conn, max_bytes=16384, timeout=15) newline = res.find("\n") if newline >= 0: res = res[0:newline] res = res.strip() if not re.match("^[A-Za-z0-9_]+(\s+[A-Za-z0-9_.]+)*$", res): raise RuntimeError("Bad command") parts = re.split("\s+", res) topic_name = parts[0] subjects = parts[1:] if subjects == []: subjects = ['DEFAULT'] if not topic_name in self.topics: raise RuntimeError("Unknown topic '%s'" % topic_name) topic = self.topics[topic_name] topic.add_subjects(subjects) log(LOG_INFO, "Received %s subjects=%s (%s)" % (topic_name, ",".join(subjects), addr[0])) start = time.time() conn.send("OK\n") except Exception, e: log(LOG_ERR, "Error (%s): %s" % (addr[0], e)) conn.send("ERROR: " + str(e) + "\n") finally: conn.close() if topic and not topic.pid and len(topic.pending_subjects) > 0: topic.run_command() def run(self): for topic in self.topics.values(): if topic.check_on_start: topic.add_subjects(['DEFAULT']) topic.run_command() now = time.time() while True: timeout = None read_list = [self.sock.fileno()] for topic in self.topics.values(): if topic.stdout_fileno != None: read_list.append(topic.stdout_fileno) if topic.stderr_fileno != None: read_list.append(topic.stderr_fileno) if topic.check_interval > 0: topic_timeout = max(0, topic.last_interval + topic.check_interval - now) if timeout == None: timeout = topic_timeout else: timeout = min(timeout, topic_timeout) read_ready, _, _, = select.select(read_list, [], [], timeout) now = time.time() if self.sock.fileno() in read_ready: self.read_command() for topic in self.topics.values(): if topic.stdout_fileno != None and topic.stdout_fileno in read_ready: topic.read_stdout() if topic.stderr_fileno != None and topic.stderr_fileno in read_ready: topic.read_stderr() if topic.check_interval > 0: remaining = max(0, topic.last_interval + topic.check_interval - now) if remaining <= 0: topic.last_interval = now topic.add_subjects(['DEFAULT']) if not topic.pid: topic.run_command() # Trap sigterm so we have a chance to recover class TerminatedError(Exception): pass def handle_sigterm(signal, stack): raise TerminatedError() def main(): global log global options signal.signal(signal.SIGTERM, handle_sigterm) parser = OptionParser() parser.add_option("-d", "--debug", action='store_true', help="do not daemonize and log to stdout") parser.add_option("", "--pid-file", help="location to write PID of daemon") parser.add_option("", "--handler-dir", help="directory to look for handlers in") parser.add_option("", "--listen", metavar="HOST[:PORT]", help="address to listen on") parser.set_defaults(pid_file=FISHPOLL_PID_FILE, handler_dir=FISHPOLL_HANDLER_DIR, listen=FISHPOLL_LISTEN) options, args = parser.parse_args() if len(args) > 0: parser.print_usage() sys.exit(1) if options.debug: log = debug_log else: openlog('fishpolld', 0, LOG_DAEMON) log = syslog # Use a standard environment os.chdir("/") os.umask(0) server = Server() try: try: if not options.debug: daemonize() write_pid_file() log(LOG_INFO, "Starting") server.run() except SystemExit: # Python-2.4 - SystemExit inherits from Exception # Pass through so we get the right exit code raise except KeyboardInterrupt, e: log(LOG_INFO, "Exiting on keyboard interrupt") except TerminatedError, e: log(LOG_INFO, "Exiting on SIGTERM") except Exception, e: log(LOG_ERR, "Exiting on unexpected exception") for line in traceback.format_exc().strip().split("\n"): log(LOG_ERR, line) finally: try: if main_process and options.pid_file: os.remove(options.pid_file) except: pass if __name__ == '__main__': main()