mirror of
https://github.com/xen-project/xen.git
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kaf24@scramble.cl.cam.ac.uk
cf36fcf0e3
Python packages always install to ${prefix}/us/lib/python/xen/...
137 lines
3.8 KiB
Python
Executable File
137 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- mode: python; -*-
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#============================================================================
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# Copyright (C) 2004 Tom Wilkie <tw275@cl.cam.ac.uk>
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# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
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#============================================================================
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"""SV web interface Lives in /usr/sbin.
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Provides pretty HTML management interface.
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Run:
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sv start
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The daemon is stopped with:
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sv stop
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The daemon will be accessible from http://localhost:8080/
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"""
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import os
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import sys
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import re
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# Default install path for Xen binary packages.
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sys.path = [ '/usr/lib/python' ] + sys.path
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from xen.xend.server.params import XEND_PID_FILE
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class CheckError(ValueError):
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pass
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def hline():
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print >>sys.stderr, "*" * 70
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def msg(message):
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print >>sys.stderr, "*" * 3, message
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def check_logging():
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"""Check python logging is installed and raise an error if not.
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Logging is standard from Python 2.3 on.
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"""
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try:
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import logging
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except ImportError:
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hline()
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msg("Python logging is not installed.")
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msg("Use 'make install-logging' at the xen root to install.")
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msg("")
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msg("Alternatively download and install from")
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msg("http://www.red-dove.com/python_logging.html")
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hline()
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raise CheckError("logging is not installed")
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def check_twisted_version():
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"""Check twisted is installed with a supported version and print a warning if not.
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Raises an error if twisted is not installed.
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"""
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# Supported twisted release and major version.
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RELEASE = 1
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MAJOR = 3
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try:
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from twisted.copyright import version
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except ImportError:
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hline()
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msg("The Twisted framework is not installed.")
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msg("Use 'make install-twisted' at the xen root to install.")
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msg("")
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msg("Alternatively download and install version %d.%d or higher" % (RELEASE, MAJOR))
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msg("from http://www.twistedmatrix.com/products")
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hline()
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raise CheckError("twisted is not installed")
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(release, major, minor) = version.split('.')
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release = int(release)
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major = int(major)
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if release > RELEASE: return
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if release == RELEASE and major >= MAJOR: return
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hline()
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msg("Warning: Twisted version not supported: %s" % version)
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msg("Use Twisted version %d.%d.0 or higher" % (RELEASE, MAJOR))
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hline()
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def check_xend():
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"""Check xend is running
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"""
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if not os.path.isfile(XEND_PID_FILE) or not os.path.getsize(XEND_PID_FILE):
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hline()
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msg( "Warning: Xend has not been detected as running." )
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msg( "Please start it immediately with: xend start " )
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hline()
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return 0
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# Read the pid of the previous invocation and search active process list.
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pid = open(XEND_PID_FILE, 'r').read()
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lines = os.popen('ps ' + pid + ' 2>/dev/null').readlines()
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for line in lines:
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if re.search('^ *' + pid + '.+xend', line):
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return 1
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hline()
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msg( "Warning: Xend has not been detected as running." )
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msg( "Please start it immediately with: xend start " )
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hline()
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return 0
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def main():
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try:
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check_logging()
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check_twisted_version()
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check_xend()
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except CheckError:
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sys.exit(1)
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from xen.sv import Daemon
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daemon = Daemon.instance()
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if not sys.argv[1:]:
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print 'usage: %s {start|stop|restart}' % sys.argv[0]
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elif os.fork():
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pid, status = os.wait()
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return status >> 8
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elif sys.argv[1] == 'start':
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return daemon.start()
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elif sys.argv[1] == 'stop':
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return daemon.stop()
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elif sys.argv[1] == 'restart':
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return daemon.stop() or daemon.start()
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else:
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print 'not an option:', sys.argv[1]
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return 1
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if __name__ == '__main__':
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sys.exit(main())
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