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documment the code for the systemd support

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This commit is contained in:
benoitc 2013-11-05 07:34:50 +01:00
parent 888115fafd
commit 411ec544dc
1 changed files with 12 additions and 5 deletions
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17
gunicorn/sock.py
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@ -135,9 +135,13 @@ def create_sockets(conf, log):
is a string, a Unix socket is created. Otherwise is a string, a Unix socket is created. Otherwise
a TypeError is raised. a TypeError is raised.
""" """
listeners = []
if 'LISTEN_PID' in os.environ and int(os.environ.get('LISTEN_PID')) == os.getpid(): # Systemd support, use the sockets managed by systemd and passed to
# gunicorn.
# http://www.freedesktop.org/software/systemd/man/systemd.socket.html
listeners = []
if ('LISTEN_PID' in os.environ
and int(os.environ.get('LISTEN_PID')) == os.getpid()):
for i in range(int(os.environ.get('LISTEN_FDS', 0))): for i in range(int(os.environ.get('LISTEN_FDS', 0))):
fd = i + SD_LISTEN_FDS_START fd = i + SD_LISTEN_FDS_START
try: try:
@ -146,15 +150,18 @@ def create_sockets(conf, log):
if isinstance(sockname, str) and sockname.startswith('/'): if isinstance(sockname, str) and sockname.startswith('/'):
listeners.append(UnixSocket(sockname, conf, log, fd=fd)) listeners.append(UnixSocket(sockname, conf, log, fd=fd))
elif len(sockname) == 2 and '.' in sockname[0]: elif len(sockname) == 2 and '.' in sockname[0]:
listeners.append(TCPSocket("%s:%s" % sockname, conf, log, fd=fd)) listeners.append(TCPSocket("%s:%s" % sockname, conf, log,
fd=fd))
elif len(sockname) == 4 and ':' in sockname[0]: elif len(sockname) == 4 and ':' in sockname[0]:
listeners.append(TCP6Socket("[%s]:%s" % sockname[:2], conf, log, fd=fd)) listeners.append(TCP6Socket("[%s]:%s" % sockname[:2], conf,
log, fd=fd))
except socket.error: except socket.error:
pass pass
del os.environ['LISTEN_PID'], os.environ['LISTEN_FDS'] del os.environ['LISTEN_PID'], os.environ['LISTEN_FDS']
if listeners: if listeners:
log.debug('Socket activation sockets: %s', ",".join([str(l) for l in listeners])) log.debug('Socket activation sockets: %s',
",".join([str(l) for l in listeners]))
return listeners return listeners
# get it only once # get it only once