From f68662f7b5673dafe39301800324dc08048a6271 Mon Sep 17 00:00:00 2001
From: Hidden Z <hiddenz@mail.i2p>
Date: Mon, 1 Nov 2010 21:24:44 +0000
Subject: [PATCH] Add py-i2phosts-master

Master daemon needed for periodic run all other components.
---
 py-i2phosts-master | 153 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100755 py-i2phosts-master

diff --git a/py-i2phosts-master b/py-i2phosts-master
new file mode 100755
index 0000000..c0e21ba
--- /dev/null
+++ b/py-i2phosts-master
@@ -0,0 +1,153 @@
+#!/usr/bin/python
+
+import os
+import sys
+import pwd
+import errno
+import argparse
+import time
+import configobj
+import validate
+import subprocess
+import threading
+import daemon
+import daemon.pidlockfile
+
+class Thread(threading.Thread):
+
+	def __init__(self):
+		threading.Thread.__init__(self)
+		self.setDaemon(True)
+
+
+class FetcherThread(Thread):
+	""" Run py-i2phosts-fetcher periodically """
+
+	def run(self):
+		while True:
+			run_prog('py-i2phosts-fetcher')
+			time.sleep(float(config['fetch_interval']))
+
+
+class CheckerThread(Thread):
+	""" Run py-i2phosts-checker, py-i2phosts-maint, py-i2phosts-builder periodically """
+
+	def run(self):
+		while True:
+			run_prog('py-i2phosts-checker')
+			run_prog('py-i2phosts-maint')
+			run_prog('py-i2phosts-builder')
+			time.sleep(float(config['check_interval']))
+
+
+def run_prog(prog):
+	try:
+		log.info('launching %s', prog)
+		sp_args = [prog]
+		if args.debug or args.verbose:
+			sp_args.append('-d')
+		p = subprocess.Popen(sp_args, shell=False)
+	except OSError, e:
+		log.error('failed to exec %s: %s', prog, e)
+		if e.errno == errno.ENOENT:
+			log.error('   maybe it isn\'t in PATH')
+	else:
+		p.wait()
+		log.info('%s finished', prog)
+
+
+def main():
+	def run_fetcher():
+		fetcher = FetcherThread()
+		fetcher.start()
+		return fetcher
+
+	def run_checker():
+		checker = CheckerThread()
+		checker.start()
+		return checker
+
+	# if we're just started, wait while fetcher get some new hosts
+	fetcher = run_fetcher()
+	fetcher.join(300) # wait for 5 mins
+	# start checker and other
+	checker = run_checker()
+
+	while True:
+		if fetcher.isAlive() == False:
+			fetcher = run_fetcher()
+		if checker.isAlive() == False:
+			checker = run_checker()
+		# do check every 30 mins
+		time.sleep(1800)
+
+# parse command line options
+parser = argparse.ArgumentParser(
+		description='Master daemon for py-i2phosts.',
+		epilog='Report bugs to http://zzz.i2p/topics/733')
+parser.add_argument('-d', '--debug', action='store_true',
+		help='run in debug mode without detaching from terminal'),
+parser.add_argument('-v', '--verbose', action='store_true',
+		help='run in verbose mode without detaching from terminal'),
+parser.add_argument('-c', '--config', default='/etc/py-i2phosts/master.conf', dest='config_file',
+		help='config file to use')
+args = parser.parse_args()
+
+# read and validate config
+spec = '''
+	log_file = string(default='/var/log/py-i2phosts/master.log')
+	log_level = option('debug', 'info', 'warning', 'error', 'critical', default='info')
+	pid_file = string(default='/var/run/py-i2phosts/master.pid')
+	runas = string(default='_pyi2phosts')
+	run_fetcher = boolean(default=True)
+	run_checker = boolean(default=True)
+	run_maint = boolean(default=True)
+	run_builder = boolean(default=True)
+	check_interval = integer(default=43200)
+	fetch_interval = integer(default=1800)
+	'''
+spec = spec.split('\n')
+config = configobj.ConfigObj(args.config_file, configspec=spec)
+if 'include' in config:
+	config_included = configobj.ConfigObj(config['include'])
+	config.merge(config_included)
+
+# django setup
+DJANGO_SETTINGS_MODULE = 'settings'
+if 'DJANGO_PROJECT_PATH' in config:
+	DJANGO_PROJECT_PATH = config['DJANGO_PROJECT_PATH']
+else:
+	DJANGO_PROJECT_PATH = os.path.dirname(sys.argv[0]) + '/web'
+sys.path.insert(1, DJANGO_PROJECT_PATH)
+os.environ['DJANGO_SETTINGS_MODULE'] = DJANGO_SETTINGS_MODULE
+from web.lib.utils import get_logger
+
+# configure logger
+if args.debug == True:
+	log_level = 'debug'
+	log_file = None
+elif args.verbose == True:
+	log_level = 'info'
+	log_file = None
+else:
+	log_level = config['log_level']
+	log_file = config['log_file']
+
+if not args.debug and not args.verbose:
+	# get pid object for daemon
+	pid = daemon.pidlockfile.TimeoutPIDLockFile(config['pid_file'], 10)
+	# create daemon context
+	d = daemon.DaemonContext(pidfile=pid, umask=077)
+	# write stderr to logfile # FIXME: and how we will deal with log rotation?
+	logfile = open(config['log_file'], 'a')
+	d.stderr = logfile
+	d.stdout = logfile
+	# drop privileges when started as root
+	if os.getuid() == 0:
+		runas = config['runas']
+		pw_entry = pwd.getpwnam(runas)
+		d.uid = pw_entry[2]
+		d.gid = pw_entry[3]
+	d.open() # become daemon
+log = get_logger(filename=log_file, log_level=log_level)
+main()