def setup(self, **kwargs):
utils.validate_configuration()
utils.drop_privileges(self.daemon.conf.get('user', 'swift'))
utils.capture_stdio(self.logger, **kwargs)
def kill_children(*args):
self.running = False
self.logger.info('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
os.killpg(0, signal.SIGTERM)
os._exit(0)
signal.signal(signal.SIGTERM, kill_children)
self.running = True
def setup(self, **kwargs):
utils.validate_configuration()
utils.drop_privileges(self.daemon.conf.get('user', 'swift'))
utils.capture_stdio(self.logger, **kwargs)
def kill_children(*args):
self.running = False
self.logger.info('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
os.killpg(0, signal.SIGTERM)
os._exit(0)
signal.signal(signal.SIGTERM, kill_children)
self.running = True
def run(self, once=False, **kwargs):
"""Run the daemon"""
utils.validate_configuration()
utils.drop_privileges(self.conf.get('user', 'swift'))
utils.capture_stdio(self.logger, **kwargs)
def kill_children(*args):
signal.signal(signal.SIGTERM, signal.SIG_IGN)
os.killpg(0, signal.SIGTERM)
sys.exit()
signal.signal(signal.SIGTERM, kill_children)
if once:
self.run_once(**kwargs)
else:
self.run_forever(**kwargs)
def run(self, once=False, **kwargs):
"""Run the daemon"""
utils.validate_configuration()
utils.drop_privileges(self.conf.get('user', 'swift'))
utils.capture_stdio(self.logger, **kwargs)
def kill_children(*args):
signal.signal(signal.SIGTERM, signal.SIG_IGN)
os.killpg(0, signal.SIGTERM)
sys.exit()
signal.signal(signal.SIGTERM, kill_children)
if once:
self.run_once(**kwargs)
else:
self.run_forever(**kwargs)
def test_capture_stdio(self):
# stubs
logger = utils.get_logger(None, 'dummy')
# mock utils system modules
_orig_sys = utils.sys
_orig_os = utils.os
try:
utils.sys = MockSys()
utils.os = MockOs()
# basic test
utils.capture_stdio(logger)
self.assert_(utils.sys.excepthook is not None)
self.assertEquals(utils.os.closed_fds, utils.sys.stdio_fds)
self.assert_(isinstance(utils.sys.stdout, utils.LoggerFileObject))
self.assert_(isinstance(utils.sys.stderr, utils.LoggerFileObject))
# reset; test same args, but exc when trying to close stdio
utils.os = MockOs(raise_funcs=('dup2', ))
utils.sys = MockSys()
# test unable to close stdio
utils.capture_stdio(logger)
self.assert_(utils.sys.excepthook is not None)
self.assertEquals(utils.os.closed_fds, [])
self.assert_(isinstance(utils.sys.stdout, utils.LoggerFileObject))
self.assert_(isinstance(utils.sys.stderr, utils.LoggerFileObject))
# reset; test some other args
utils.os = MockOs()
utils.sys = MockSys()
logger = utils.get_logger(None, log_to_console=True)
# test console log
utils.capture_stdio(logger,
capture_stdout=False,
capture_stderr=False)
self.assert_(utils.sys.excepthook is not None)
# when logging to console, stderr remains open
self.assertEquals(utils.os.closed_fds, utils.sys.stdio_fds[:2])
reset_loggers()
# stdio not captured
self.assertFalse(
isinstance(utils.sys.stdout, utils.LoggerFileObject))
self.assertFalse(
isinstance(utils.sys.stderr, utils.LoggerFileObject))
reset_loggers()
finally:
utils.sys = _orig_sys
utils.os = _orig_os
def test_capture_stdio(self):
# stubs
logger = utils.get_logger(None, 'dummy')
# mock utils system modules
_orig_sys = utils.sys
_orig_os = utils.os
try:
utils.sys = MockSys()
utils.os = MockOs()
# basic test
utils.capture_stdio(logger)
self.assert_(utils.sys.excepthook is not None)
self.assertEquals(utils.os.closed_fds, utils.sys.stdio_fds)
self.assert_(isinstance(utils.sys.stdout, utils.LoggerFileObject))
self.assert_(isinstance(utils.sys.stderr, utils.LoggerFileObject))
# reset; test same args, but exc when trying to close stdio
utils.os = MockOs(raise_funcs=('dup2',))
utils.sys = MockSys()
# test unable to close stdio
utils.capture_stdio(logger)
self.assert_(utils.sys.excepthook is not None)
self.assertEquals(utils.os.closed_fds, [])
self.assert_(isinstance(utils.sys.stdout, utils.LoggerFileObject))
self.assert_(isinstance(utils.sys.stderr, utils.LoggerFileObject))
# reset; test some other args
utils.os = MockOs()
utils.sys = MockSys()
logger = utils.get_logger(None, log_to_console=True)
# test console log
utils.capture_stdio(logger, capture_stdout=False,
capture_stderr=False)
self.assert_(utils.sys.excepthook is not None)
# when logging to console, stderr remains open
self.assertEquals(utils.os.closed_fds, utils.sys.stdio_fds[:2])
reset_loggers()
# stdio not captured
self.assertFalse(isinstance(utils.sys.stdout,
utils.LoggerFileObject))
self.assertFalse(isinstance(utils.sys.stderr,
utils.LoggerFileObject))
reset_loggers()
finally:
utils.sys = _orig_sys
utils.os = _orig_os
def test_capture_stdio(self):
# stubs
logger = utils.get_logger(None, 'dummy')
# mock utils system modules
utils.sys = MockSys()
utils.os = MockOs()
# basic test
utils.capture_stdio(logger)
self.assert_(utils.sys.excepthook is not None)
self.assertEquals(utils.os.closed_fds, [0, 1, 2])
self.assert_(utils.sys.stdout is not None)
self.assert_(utils.sys.stderr is not None)
# reset; test same args, but exc when trying to close stdio
utils.os = MockOs(raise_funcs=('dup2',))
utils.sys = MockSys()
# test unable to close stdio
utils.capture_stdio(logger)
self.assert_(utils.sys.excepthook is not None)
self.assertEquals(utils.os.closed_fds, [])
self.assert_(utils.sys.stdout is not None)
self.assert_(utils.sys.stderr is not None)
# reset; test some other args
logger = utils.get_logger(None, log_to_console=True)
utils.os = MockOs()
utils.sys = MockSys()
# test console log
utils.capture_stdio(logger, capture_stdout=False,
capture_stderr=False)
self.assert_(utils.sys.excepthook is not None)
# when logging to console, stderr remains open
self.assertEquals(utils.os.closed_fds, [0, 1])
logger.logger.removeHandler(utils.get_logger.console)
# stdio not captured
self.assertFalse(hasattr(utils.sys, 'stdout'))
self.assertFalse(hasattr(utils.sys, 'stderr'))
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server according to some strategy. The default strategy runs a
specified number of workers in pre-fork model. The object-server (only)
may use a servers-per-port strategy if its config has a servers_per_port
setting with a value greater than zero.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = _initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print(e)
return 1
# optional nice/ionice priority scheduling
utils.modify_priority(conf, logger)
servers_per_port = int(conf.get("servers_per_port", "0") or 0)
# NOTE: for now servers_per_port is object-server-only; future work could
# be done to test and allow it to be used for account and container
# servers, but that has not been done yet.
if servers_per_port and app_section == "object-server":
strategy = ServersPerPortStrategy(conf, logger, servers_per_port=servers_per_port)
else:
strategy = WorkersStrategy(conf, logger)
error_msg = strategy.bind_ports()
if error_msg:
logger.error(error_msg)
print(error_msg)
return 1
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {"log_name": log_name}
if "global_conf_callback" in kwargs:
kwargs["global_conf_callback"](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
utils.FALLOCATE_RESERVE, utils.FALLOCATE_IS_PERCENT = utils.config_fallocate_value(
conf.get("fallocate_reserve", "1%")
)
# redirect errors to logger and close stdio
capture_stdio(logger)
no_fork_sock = strategy.no_fork_sock()
if no_fork_sock:
run_server(conf, logger, no_fork_sock, global_conf=global_conf)
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error("SIGTERM received")
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error("SIGHUP received")
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
while running[0]:
for sock, sock_info in strategy.new_worker_socks():
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
strategy.post_fork_hook()
run_server(conf, logger, sock)
strategy.log_sock_exit(sock, sock_info)
return 0
else:
strategy.register_worker_start(sock, sock_info, pid)
# The strategy may need to pay attention to something in addition to
# child process exits (like new ports showing up in a ring).
#
# NOTE: a timeout value of None will just instantiate the Timeout
# object and not actually schedule it, which is equivalent to no
# timeout for the green_os.wait().
loop_timeout = strategy.loop_timeout()
with Timeout(loop_timeout, exception=False):
try:
try:
pid, status = green_os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
strategy.register_worker_exit(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
if err.errno == errno.ECHILD:
# If there are no children at all (ECHILD), then
# there's nothing to actually wait on. We sleep
# for a little bit to avoid a tight CPU spin
# and still are able to catch any KeyboardInterrupt
# events that happen. The value of 0.01 matches the
# value in eventlet's waitpid().
sleep(0.01)
except KeyboardInterrupt:
logger.notice("User quit")
running[0] = False
break
strategy.shutdown_sockets()
logger.notice("Exited")
return 0
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server according to some strategy. The default strategy runs a
specified number of workers in pre-fork model. The object-server (only)
may use a servers-per-port strategy if its config has a servers_per_port
setting with a value greater than zero.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = \
_initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print(e)
return 1
# optional nice/ionice priority scheduling
utils.modify_priority(conf, logger)
servers_per_port = int(conf.get('servers_per_port', '0') or 0)
# NOTE: for now servers_per_port is object-server-only; future work could
# be done to test and allow it to be used for account and container
# servers, but that has not been done yet.
if servers_per_port and app_section == 'object-server':
strategy = ServersPerPortStrategy(
conf, logger, servers_per_port=servers_per_port)
else:
strategy = WorkersStrategy(conf, logger)
# patch event before loadapp
utils.eventlet_monkey_patch()
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {'log_name': log_name}
if 'global_conf_callback' in kwargs:
kwargs['global_conf_callback'](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
utils.FALLOCATE_RESERVE, utils.FALLOCATE_IS_PERCENT = \
utils.config_fallocate_value(conf.get('fallocate_reserve', '1%'))
# Start listening on bind_addr/port
error_msg = strategy.do_bind_ports()
if error_msg:
logger.error(error_msg)
print(error_msg)
return 1
# Redirect errors to logger and close stdio. Do this *after* binding ports;
# we use this to signal that the service is ready to accept connections.
capture_stdio(logger)
no_fork_sock = strategy.no_fork_sock()
if no_fork_sock:
run_server(conf, logger, no_fork_sock, global_conf=global_conf)
return 0
def stop_with_signal(signum, *args):
"""Set running flag to False and capture the signum"""
running_context[0] = False
running_context[1] = signum
# context to hold boolean running state and stop signum
running_context = [True, None]
signal.signal(signal.SIGTERM, stop_with_signal)
signal.signal(signal.SIGHUP, stop_with_signal)
while running_context[0]:
for sock, sock_info in strategy.new_worker_socks():
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
strategy.post_fork_hook()
run_server(conf, logger, sock)
strategy.log_sock_exit(sock, sock_info)
return 0
else:
strategy.register_worker_start(sock, sock_info, pid)
# The strategy may need to pay attention to something in addition to
# child process exits (like new ports showing up in a ring).
#
# NOTE: a timeout value of None will just instantiate the Timeout
# object and not actually schedule it, which is equivalent to no
# timeout for the green_os.wait().
loop_timeout = strategy.loop_timeout()
with Timeout(loop_timeout, exception=False):
try:
try:
pid, status = green_os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
strategy.register_worker_exit(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
if err.errno == errno.ECHILD:
# If there are no children at all (ECHILD), then
# there's nothing to actually wait on. We sleep
# for a little bit to avoid a tight CPU spin
# and still are able to catch any KeyboardInterrupt
# events that happen. The value of 0.01 matches the
# value in eventlet's waitpid().
sleep(0.01)
except KeyboardInterrupt:
logger.notice('User quit')
running_context[0] = False
break
if running_context[1] is not None:
try:
signame = SIGNUM_TO_NAME[running_context[1]]
except KeyError:
logger.error('Stopping with unexpected signal %r' %
running_context[1])
else:
logger.error('%s received', signame)
if running_context[1] == signal.SIGTERM:
os.killpg(0, signal.SIGTERM)
strategy.shutdown_sockets()
signal.signal(signal.SIGTERM, signal.SIG_IGN)
logger.notice('Exited (%s)', os.getpid())
return 0
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server according to some strategy. The default strategy runs a
specified number of workers in pre-fork model. The object-server (only)
may use a servers-per-port strategy if its config has a servers_per_port
setting with a value greater than zero.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = \
_initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print(e)
return 1
servers_per_port = int(conf.get('servers_per_port', '0') or 0)
# NOTE: for now servers_per_port is object-server-only; future work could
# be done to test and allow it to be used for account and container
# servers, but that has not been done yet.
if servers_per_port and app_section == 'object-server':
strategy = ServersPerPortStrategy(
conf, logger, servers_per_port=servers_per_port)
else:
strategy = WorkersStrategy(conf, logger)
error_msg = strategy.bind_ports()
if error_msg:
logger.error(error_msg)
print(error_msg)
return 1
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {'log_name': log_name}
if 'global_conf_callback' in kwargs:
kwargs['global_conf_callback'](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
reserve = int(conf.get('fallocate_reserve', 0))
if reserve > 0:
utils.FALLOCATE_RESERVE = reserve
# redirect errors to logger and close stdio
capture_stdio(logger)
no_fork_sock = strategy.no_fork_sock()
if no_fork_sock:
run_server(conf, logger, no_fork_sock, global_conf=global_conf)
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error('SIGHUP received')
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
while running[0]:
for sock, sock_info in strategy.new_worker_socks():
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
strategy.post_fork_hook()
run_server(conf, logger, sock)
strategy.log_sock_exit(sock, sock_info)
return 0
else:
strategy.register_worker_start(sock, sock_info, pid)
# The strategy may need to pay attention to something in addition to
# child process exits (like new ports showing up in a ring).
#
# NOTE: a timeout value of None will just instantiate the Timeout
# object and not actually schedule it, which is equivalent to no
# timeout for the green_os.wait().
loop_timeout = strategy.loop_timeout()
with Timeout(loop_timeout, exception=False):
try:
pid, status = green_os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
strategy.register_worker_exit(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
logger.notice('User quit')
running[0] = False
break
strategy.shutdown_sockets()
logger.notice('Exited')
return 0
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server using the specified number of workers.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = \
_initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print e
return 1
# bind to address and port
sock = get_socket(conf, default_port=kwargs.get('default_port', 8080))
# remaining tasks should not require elevated privileges
drop_privileges(conf.get('user', 'swift'))
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {'log_name': log_name}
if 'global_conf_callback' in kwargs:
kwargs['global_conf_callback'](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
reserve = int(conf.get('fallocate_reserve', 0))
if reserve > 0:
utils.FALLOCATE_RESERVE = reserve
# redirect errors to logger and close stdio
capture_stdio(logger)
worker_count = config_auto_int_value(conf.get('workers'), CPU_COUNT)
# Useful for profiling [no forks].
if worker_count == 0:
run_server(conf, logger, sock, global_conf=global_conf)
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error('SIGHUP received')
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
children = []
while running[0]:
while len(children) < worker_count:
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
run_server(conf, logger, sock)
logger.notice('Child %d exiting normally' % os.getpid())
return 0
else:
logger.notice('Started child %s' % pid)
children.append(pid)
try:
pid, status = os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
logger.error('Removing dead child %s' % pid)
children.remove(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
logger.notice('User quit')
break
greenio.shutdown_safe(sock)
sock.close()
logger.notice('Exited')
return 0
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server using the specified number of workers.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = \
_initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print e
return 1
# bind to address and port
sock = get_socket(conf, default_port=kwargs.get('default_port', 8080))
# remaining tasks should not require elevated privileges
drop_privileges(conf.get('user', 'ubuntu'))
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {'log_name': log_name}
if 'global_conf_callback' in kwargs:
kwargs['global_conf_callback'](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
reserve = int(conf.get('fallocate_reserve', 0))
if reserve > 0:
utils.FALLOCATE_RESERVE = reserve
# redirect errors to logger and close stdio
capture_stdio(logger)
worker_count = config_auto_int_value(conf.get('workers'), CPU_COUNT)
# Useful for profiling [no forks].
if worker_count == 0:
run_server(conf, logger, sock, global_conf=global_conf)
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error('SIGHUP received')
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
children = []
while running[0]:
while len(children) < worker_count:
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
#with open("/home/ubuntu/transition_statistics.txt", "a") as tran_file:
# tran_file.write("ESTOU NO FORK!!!\n")
oracle_plus.get_oracle_plus().set_attributes(len(children))
oracle.get_oracle().set_attributes(int(conf.get('number_of_replicas', 3)),
float(conf.get('average_window_size', 10)),
config_true_value(conf.get('use_adaptation', True)),
int(conf.get('initial_write_quorum_size', 2)),
int(conf.get('initial_read_quorum_size', 2)),
conf.get('oracle_log_file', '/home/ubuntu/oracle.txt'),
conf.get('oracle_lib_path', '/home/ubuntu/oracle_files/oracle_twitter'),
conf.get('oracle_model_path', '/home/ubuntu/oracle_files/oracle_twitter'),
conf.get('ip', ''),
int(conf.get('port', '')),
conf.get('master_ip', ''),
conf.get('slave_ips', ''),
int(conf.get('replica_reconciliation_timeout', 2)),
len(children),
worker_count)
run_server(conf, logger, sock)
logger.notice('Child %d exiting normally' % os.getpid())
return 0
else:
logger.notice('Started child %s' % pid)
children.append(pid)
try:
pid, status = os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
logger.error('Removing dead child %s' % pid)
children.remove(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
logger.notice('User quit')
break
greenio.shutdown_safe(sock)
sock.close()
logger.notice('Exited')
return 0
:param app_section: App name from conf file to load config from
"""
# Load configuration, Set logger and Load request processor
try:
(app, conf, logger, log_name) = \
init_request_processor(conf_file, app_section, *args, **kwargs)
except ConfigFileError, e:
print e
return
# bind to address and port
sock = get_socket(conf, default_port=kwargs.get('default_port', 8080))
# remaining tasks should not require elevated privileges
drop_privileges(conf.get('user', 'swift'))
# redirect errors to logger and close stdio
capture_stdio(logger)
def run_server():
wsgi.HttpProtocol.default_request_version = "HTTP/1.0"
# Turn off logging requests by the underlying WSGI software.
wsgi.HttpProtocol.log_request = lambda *a: None
# Redirect logging other messages by the underlying WSGI software.
wsgi.HttpProtocol.log_message = \
lambda s, f, *a: logger.error('ERROR WSGI: ' + f % a)
wsgi.WRITE_TIMEOUT = int(conf.get('client_timeout') or 60)
eventlet.hubs.use_hub('poll')
eventlet.patcher.monkey_patch(all=False, socket=True)
app = loadapp('config:%s' % conf_file,
global_conf={'log_name': log_name})
pool = GreenPool(size=1024)
try:
log_name = conf.get("log_name", app_section)
if "logger" in kwargs:
logger = kwargs.pop("logger")
else:
logger = get_logger(conf, log_name, log_to_console=kwargs.pop("verbose", False), log_route="wsgi")
# bind to address and port
sock = get_socket(conf, default_port=kwargs.get("default_port", 8080))
# remaining tasks should not require elevated privileges
drop_privileges(conf.get("user", "swift"))
# Ensure the application can be loaded before proceeding.
loadapp("config:%s" % conf_file, global_conf={"log_name": log_name})
# redirect errors to logger and close stdio
capture_stdio(logger)
def run_server():
wsgi.HttpProtocol.default_request_version = "HTTP/1.0"
# Turn off logging requests by the underlying WSGI software.
wsgi.HttpProtocol.log_request = lambda *a: None
# Redirect logging other messages by the underlying WSGI software.
wsgi.HttpProtocol.log_message = lambda s, f, *a: logger.error("ERROR WSGI: " + f % a)
wsgi.WRITE_TIMEOUT = int(conf.get("client_timeout") or 60)
eventlet.hubs.use_hub("poll")
eventlet.patcher.monkey_patch(all=False, socket=True)
monkey_patch_mimetools()
app = loadapp("config:%s" % conf_file, global_conf={"log_name": log_name})
pool = GreenPool(size=1024)
try:
wsgi.server(sock, app, NullLogger(), custom_pool=pool)
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server according to some strategy. The default strategy runs a
specified number of workers in pre-fork model. The object-server (only)
may use a servers-per-port strategy if its config has a servers_per_port
setting with a value greater than zero.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = \
_initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print(e)
return 1
# optional nice/ionice priority scheduling
utils.modify_priority(conf, logger)
servers_per_port = int(conf.get('servers_per_port', '0') or 0)
# NOTE: for now servers_per_port is object-server-only; future work could
# be done to test and allow it to be used for account and container
# servers, but that has not been done yet.
if servers_per_port and app_section == 'object-server':
strategy = ServersPerPortStrategy(conf,
logger,
servers_per_port=servers_per_port)
else:
strategy = WorkersStrategy(conf, logger)
# patch event before loadapp
utils.eventlet_monkey_patch()
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {'log_name': log_name}
if 'global_conf_callback' in kwargs:
kwargs['global_conf_callback'](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
utils.FALLOCATE_RESERVE, utils.FALLOCATE_IS_PERCENT = \
utils.config_fallocate_value(conf.get('fallocate_reserve', '1%'))
# Start listening on bind_addr/port
error_msg = strategy.do_bind_ports()
if error_msg:
logger.error(error_msg)
print(error_msg)
return 1
# Redirect errors to logger and close stdio. Do this *after* binding ports;
# we use this to signal that the service is ready to accept connections.
capture_stdio(logger)
no_fork_sock = strategy.no_fork_sock()
if no_fork_sock:
run_server(conf, logger, no_fork_sock, global_conf=global_conf)
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error('SIGHUP received')
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
while running[0]:
for sock, sock_info in strategy.new_worker_socks():
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
strategy.post_fork_hook()
run_server(conf, logger, sock)
strategy.log_sock_exit(sock, sock_info)
return 0
else:
strategy.register_worker_start(sock, sock_info, pid)
# The strategy may need to pay attention to something in addition to
# child process exits (like new ports showing up in a ring).
#
# NOTE: a timeout value of None will just instantiate the Timeout
# object and not actually schedule it, which is equivalent to no
# timeout for the green_os.wait().
loop_timeout = strategy.loop_timeout()
with Timeout(loop_timeout, exception=False):
try:
try:
pid, status = green_os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
strategy.register_worker_exit(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
if err.errno == errno.ECHILD:
# If there are no children at all (ECHILD), then
# there's nothing to actually wait on. We sleep
# for a little bit to avoid a tight CPU spin
# and still are able to catch any KeyboardInterrupt
# events that happen. The value of 0.01 matches the
# value in eventlet's waitpid().
sleep(0.01)
except KeyboardInterrupt:
logger.notice('User quit')
running[0] = False
break
strategy.shutdown_sockets()
logger.notice('Exited')
return 0
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server using the specified number of workers.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = _initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print e
return 1
# bind to address and port
sock = get_socket(conf, default_port=kwargs.get("default_port", 8080))
# remaining tasks should not require elevated privileges
drop_privileges(conf.get("user", "swift"))
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {"log_name": log_name}
if "global_conf_callback" in kwargs:
kwargs["global_conf_callback"](conf, global_conf)
loadapp(conf_path, global_conf=global_conf)
# set utils.FALLOCATE_RESERVE if desired
reserve = int(conf.get("fallocate_reserve", 0))
if reserve > 0:
utils.FALLOCATE_RESERVE = reserve
# redirect errors to logger and close stdio
capture_stdio(logger)
worker_count = config_auto_int_value(conf.get("workers"), CPU_COUNT)
# Useful for profiling [no forks].
if worker_count == 0:
run_server(conf, logger, sock, global_conf=global_conf)
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error("SIGTERM received")
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error("SIGHUP received")
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
children = []
while running[0]:
while len(children) < worker_count:
pid = os.fork()
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
run_server(conf, logger, sock)
logger.notice("Child %d exiting normally" % os.getpid())
return 0
else:
logger.notice("Started child %s" % pid)
children.append(pid)
try:
pid, status = os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
logger.error("Removing dead child %s" % pid)
children.remove(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
logger.notice("User quit")
break
greenio.shutdown_safe(sock)
sock.close()
logger.notice("Exited")
return 0
def run_wsgi(conf_path, app_section, *args, **kwargs):
"""
Runs the server using the specified number of workers.
:param conf_path: Path to paste.deploy style configuration file/directory
:param app_section: App name from conf file to load config from
:returns: 0 if successful, nonzero otherwise
"""
# Load configuration, Set logger and Load request processor
try:
(conf, logger, log_name) = \
_initrp(conf_path, app_section, *args, **kwargs)
except ConfigFileError as e:
print(e)
return 1
print('conf,logger,log_name',conf,logger,log_name)
# bind to address and port
try:
sock = get_socket(conf)
except ConfigFilePortError:
msg = 'bind_port wasn\'t properly set in the config file. ' \
'It must be explicitly set to a valid port number.'
logger.error(msg)
print(msg)
return 1
print('sock',sock)
# remaining tasks should not require elevated privileges
drop_privileges(conf.get('user', 'swift'))
# Ensure the configuration and application can be loaded before proceeding.
global_conf = {'log_name': log_name}
if 'global_conf_callback' in kwargs:
kwargs['global_conf_callback'](conf, global_conf)
print('**** calling loadapp function start *****')
#loadapp(conf_path, global_conf=global_conf)
print('**** calling loadapp function end *****')
# set utils.FALLOCATE_RESERVE if desired
reserve = int(conf.get('fallocate_reserve', 0))
print('reserve',reserve)
if reserve > 0:
utils.FALLOCATE_RESERVE = reserve
# redirect errors to logger and close stdio
capture_stdio(logger)
print('capture_studio done')
worker_count = config_auto_int_value(conf.get('workers'), CPU_COUNT)
print('worker_count',worker_count)
# Useful for profiling [no forks].
if worker_count == 0:
run_server(conf, logger, sock, global_conf=global_conf)
print('run_server when worker_count is 0')
return 0
def kill_children(*args):
"""Kills the entire process group."""
logger.error('SIGTERM received')
signal.signal(signal.SIGTERM, signal.SIG_IGN)
running[0] = False
os.killpg(0, signal.SIGTERM)
def hup(*args):
"""Shuts down the server, but allows running requests to complete"""
logger.error('SIGHUP received')
signal.signal(signal.SIGHUP, signal.SIG_IGN)
running[0] = False
running = [True]
signal.signal(signal.SIGTERM, kill_children)
signal.signal(signal.SIGHUP, hup)
children = []
while running[0]:
while len(children) < worker_count:
pid = os.fork()
print('pid',pid)
if pid == 0:
signal.signal(signal.SIGHUP, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
print('')
print('in run_wsgi now calling run_server,conf,logger,sock',conf,logger,sock)
print('')
run_server(conf, logger, sock)
logger.notice('Child %d exiting normally' % os.getpid())
return 0
else:
logger.notice('Started child %s' % pid)
children.append(pid)
try:
pid, status = os.wait()
if os.WIFEXITED(status) or os.WIFSIGNALED(status):
logger.error('Removing dead child %s' % pid)
children.remove(pid)
except OSError as err:
if err.errno not in (errno.EINTR, errno.ECHILD):
raise
except KeyboardInterrupt:
logger.notice('User quit')
break
greenio.shutdown_safe(sock)
sock.close()
logger.notice('Exited')
return 0
