def spawn(self, conf_file, once=False, wait=True, daemon=True, **kwargs):
"""Launch a subprocess for this server.
:param conf_file: path to conf_file to use as first arg
:param once: boolean, add once argument to command
:param wait: boolean, if true capture stdout with a pipe
:param daemon: boolean, if true ask server to log to console
:returns : the pid of the spawned process
"""
args = [self.cmd, conf_file]
if once:
args.append('once')
if not daemon:
# ask the server to log to console
args.append('verbose')
# figure out what we're going to do with stdio
if not daemon:
# do nothing, this process is open until the spawns close anyway
re_out = None
re_err = None
else:
re_err = subprocess.STDOUT
if wait:
# we're going to need to block on this...
re_out = subprocess.PIPE
else:
re_out = open(os.devnull, 'w+b')
proc = subprocess.Popen(args, stdout=re_out, stderr=re_err)
pid_file = self.get_pid_file_name(conf_file)
write_file(pid_file, proc.pid)
self.procs.append(proc)
return proc.pid
def spawn(self, conf_file, once=False, wait=True, daemon=True, **kwargs):
"""Launch a subprocess for this server.
:param conf_file: path to conf_file to use as first arg
:param once: boolean, add once argument to command
:param wait: boolean, if true capture stdout with a pipe
:param daemon: boolean, if false ask server to log to console
:returns : the pid of the spawned process
"""
args = [self.cmd, conf_file]
if once:
args.append('once')
if not daemon:
# ask the server to log to console
args.append('verbose')
# figure out what we're going to do with stdio
if not daemon:
# do nothing, this process is open until the spawns close anyway
re_out = None
re_err = None
else:
re_err = subprocess.STDOUT
if wait:
# we're going to need to block on this...
re_out = subprocess.PIPE
else:
re_out = open(os.devnull, 'w+b')
proc = subprocess.Popen(args, stdout=re_out, stderr=re_err)
pid_file = self.get_pid_file_name(conf_file)
write_file(pid_file, proc.pid)
self.procs.append(proc)
return proc.pid
def spawn(self,
conf_file,
once=False,
wait=True,
daemon=True,
additional_args=None,
**kwargs):
"""Launch a subprocess for this server.
:param conf_file: path to conf_file to use as first arg
:param once: boolean, add once argument to command
:param wait: boolean, if true capture stdout with a pipe
:param daemon: boolean, if false ask server to log to console
:param additional_args: list of additional arguments to pass
on the command line
:returns: the pid of the spawned process
"""
args = [self.cmd, conf_file]
if once:
args.append('once')
if not daemon:
# ask the server to log to console
args.append('verbose')
if additional_args:
if isinstance(additional_args, str):
additional_args = [additional_args]
args.extend(additional_args)
# figure out what we're going to do with stdio
if not daemon:
# do nothing, this process is open until the spawns close anyway
re_out = None
re_err = None
else:
re_err = subprocess.STDOUT
if wait:
# we're going to need to block on this...
re_out = subprocess.PIPE
else:
re_out = open(os.devnull, 'w+b')
# 创建并返回一个子进程，args[0],可执行文件名，args[1:]是参数
# args = ['swift-**-server', '/etc/swift/**-server.conf']
proc = subprocess.Popen(args, stdout=re_out, stderr=re_err)
# 获取 pid_file 路径，eg: /var/run/swift/***-server.pid
pid_file = self.get_pid_file_name(conf_file)
# 将 proc.pid 写入到 pid_file
write_file(pid_file, proc.pid)
self.procs.append(proc)
return proc.pid
def test_write_file(self):
with temptree([]) as t:
file_name = os.path.join(t, 'test')
utils.write_file(file_name, 'test')
with open(file_name, 'r') as f:
contents = f.read()
self.assertEquals(contents, 'test')
# and also subdirs
file_name = os.path.join(t, 'subdir/test2')
utils.write_file(file_name, 'test2')
with open(file_name, 'r') as f:
contents = f.read()
self.assertEquals(contents, 'test2')
# but can't over-write files
file_name = os.path.join(t, 'subdir/test2/test3')
self.assertRaises(IOError, utils.write_file, file_name, 'test3')
def test_write_file(self):
with temptree([]) as t:
file_name = os.path.join(t, "test")
utils.write_file(file_name, "test")
with open(file_name, "r") as f:
contents = f.read()
self.assertEquals(contents, "test")
# and also subdirs
file_name = os.path.join(t, "subdir/test2")
utils.write_file(file_name, "test2")
with open(file_name, "r") as f:
contents = f.read()
self.assertEquals(contents, "test2")
# but can't over-write files
file_name = os.path.join(t, "subdir/test2/test3")
self.assertRaises(IOError, utils.write_file, file_name, "test3")