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-#! %%PYTHON_CMD%%
-
-################################################################################
-# Author: Jean-Baptiste Quenot <jb.quenot@caraldi.com>
-# Purpose: Control cocoon process
-# Date Created: 2004-05-04 11:14:05
-# Revision: $FreeBSD$
-################################################################################
-# Copyright (c) 2004, Jean-Baptiste Quenot <jb.quenot@caraldi.com>
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
-#
-# * Redistributions of source code must retain the above copyright notice, this
-# list of conditions and the following disclaimer.
-# * Redistributions in binary form must reproduce the above copyright notice,
-# this list of conditions and the following disclaimer in the documentation
-# and/or other materials provided with the distribution.
-# * The name of the contributors may not be used to endorse or promote products
-# derived from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-################################################################################
-#
-# Files handled by this script (pid file, log files) must reside in a writable
-# directory, ie the directory must be owned by the user running the program.
-
-import sys, os, signal, time, stat, re
-
-def readProcessId():
- f = open(PID_FILE, 'r')
- pid = int(f.readline())
- f.close()
- return pid
-
-def isProgramRunning(pid):
- # Send a dummy signal to the process. If it died, an exception is
- # thrown
- try:
- os.kill(pid, signal.SIGCONT)
- return 1
- except OSError:
- return 0
-
-def usage():
- print >> sys.stderr, "Usage: %s {start|stop|restart}" % sys.argv[0]
-
-def start():
- cwd = os.getcwd()
- if os.path.exists(PID_FILE):
- # Read the process id
- pid = readProcessId()
-
- if isProgramRunning(pid):
- print >> sys.stderr, '%s already started' % APP_NAME
- sys.exit(3)
-
- if not(os.path.exists(COMMAND)):
- print >> sys.stderr, '%s cannot be found' % COMMAND
- sys.exit(3)
-
- # Append program output to a log file
- l = open(LOG_FILE, 'a')
- orig_stderr = os.dup(sys.stderr.fileno())
- os.dup2(l.fileno(), sys.stdout.fileno())
- os.dup2(l.fileno(), sys.stderr.fileno())
-
- finfo = os.stat(COMMAND)[stat.ST_MODE]
- executable = stat.S_IMODE(finfo) & 0111
- if not(executable):
- sys.stderr = os.fdopen(orig_stderr, 'w')
- print >> sys.stderr, 'Cannot run %s, execute bit is missing' % COMMAND
- sys.exit(5)
-
- if APP_HOME:
- # Change current directory to APP_HOME
- os.chdir(APP_HOME)
-
- # Start program in the background
- pid = os.spawnv(os.P_NOWAIT, COMMAND, ARGS)
-
- # Wait a little
- time.sleep(.4)
- (status_pid, status) = os.waitpid(pid, os.WNOHANG)
-
- # Check program exit status, if available
- if status_pid != 0 and os.WIFEXITED(status):
- sys.stderr = os.fdopen(orig_stderr, 'w')
- print >> sys.stderr, 'Could not start %s. Check %s for errors.' % (APP_NAME, LOG_FILE)
- sys.exit(2)
-
- # It's alive, so write down the process id
- os.chdir(cwd)
- f = open(PID_FILE, 'w')
- print >> f, pid
- f.close()
-
-def warnNotRunning():
- if sys.argv[1] == "stop":
- print >> sys.stderr, '%s is not running' % APP_NAME
- else:
- print >> sys.stderr, 'Warning: %s was not running' % APP_NAME
-
-def cleanup():
- os.unlink(PID_FILE)
-
-def stop():
- if os.path.exists(PID_FILE):
- # Read the process id
- pid = readProcessId()
- else:
- warnNotRunning()
- return
-
- if not(isProgramRunning(pid)):
- warnNotRunning()
- cleanup()
- return
-
- # Terminate program
- os.kill(pid, signal.SIGTERM)
-
- while isProgramRunning(pid):
- time.sleep(.1)
-
- cleanup()
-
-if __name__ == '__main__':
- LOG_FILE = "%%LOG_FILE%%"
- APP_NAME = "%%APP_NAME%%"
- APP_HOME = "%%APP_HOME%%"
- PID_FILE = "%%PID_FILE%%"
- COMMAND = "%%APP_HOME%%/cocoon.sh"
- os.environ["JAVA_OPTIONS"] = " ".join(sys.argv[1:-1])
- ARGS = [COMMAND, "servlet"]
-
- if len(sys.argv) < 2:
- usage()
- sys.exit(1)
-
- if sys.argv[-1] == "start":
- start()
-
- elif sys.argv[-1] == "stop":
- stop()
-
- elif sys.argv[-1] == "restart":
- stop()
- start()
-
- else:
- usage()
- sys.exit(1)