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-rw-r--r--pkg/osx/__init__.py2
-rw-r--r--pkg/osx/_metadata.py28
-rw-r--r--pkg/osx/daemon.py75
-rw-r--r--pkg/osx/pidfile.py4
-rw-r--r--pkg/osx/runner.py40
5 files changed, 76 insertions, 73 deletions
diff --git a/pkg/osx/__init__.py b/pkg/osx/__init__.py
index 4731a6ef..77ff624b 100644
--- a/pkg/osx/__init__.py
+++ b/pkg/osx/__init__.py
@@ -41,7 +41,7 @@ from __future__ import (absolute_import, unicode_literals)
from .daemon import DaemonContext
-
+
# Local variables:
# coding: utf-8
# mode: python
diff --git a/pkg/osx/_metadata.py b/pkg/osx/_metadata.py
index 6d22a2b7..88843df7 100644
--- a/pkg/osx/_metadata.py
+++ b/pkg/osx/_metadata.py
@@ -21,10 +21,11 @@ import datetime
import pkg_resources
-
+
distribution_name = "python-daemon"
version_info_filename = "version_info.json"
+
def get_distribution_version_info(filename=version_info_filename):
""" Get the version info from the installed distribution.
@@ -37,10 +38,10 @@ def get_distribution_version_info(filename=version_info_filename):
"""
version_info = {
- 'release_date': "UNKNOWN",
- 'version': "UNKNOWN",
- 'maintainer': "UNKNOWN",
- }
+ 'release_date': "UNKNOWN",
+ 'version': "UNKNOWN",
+ 'maintainer': "UNKNOWN",
+ }
try:
distribution = pkg_resources.get_distribution(distribution_name)
@@ -58,12 +59,13 @@ version_info = get_distribution_version_info()
version_installed = version_info['version']
-
+
rfc822_person_regex = re.compile(
- "^(?P<name>[^<]+) <(?P<email>[^>]+)>$")
+ "^(?P<name>[^<]+) <(?P<email>[^>]+)>$")
ParsedPerson = collections.namedtuple('ParsedPerson', ['name', 'email'])
+
def parse_person_field(value):
""" Parse a person field into name and email address.
@@ -80,18 +82,18 @@ def parse_person_field(value):
if len(value):
if match is not None:
result = ParsedPerson(
- name=match.group('name'),
- email=match.group('email'))
+ name=match.group('name'),
+ email=match.group('email'))
else:
result = ParsedPerson(name=value, email=None)
- return result
+ return result
author_name = "Ben Finney"
author_email = "ben+python@benfinney.id.au"
author = "{name} <{email}>".format(name=author_name, email=author_email)
-
+
class YearRange:
""" A range of years spanning a period. """
@@ -140,11 +142,11 @@ build_date = version_info['release_date']
copyright_year_range = make_year_range(copyright_year_begin, build_date)
copyright = "Copyright © {year_range} {author} and others".format(
- year_range=copyright_year_range, author=author)
+ year_range=copyright_year_range, author=author)
license = "Apache-2"
url = "https://alioth.debian.org/projects/python-daemon/"
-
+
# Local variables:
# coding: utf-8
# mode: python
diff --git a/pkg/osx/daemon.py b/pkg/osx/daemon.py
index 07810cf1..7ca8770e 100644
--- a/pkg/osx/daemon.py
+++ b/pkg/osx/daemon.py
@@ -36,7 +36,7 @@ except NameError:
basestring = str
unicode = str
-
+
class DaemonError(Exception):
""" Base exception class for errors from this module. """
@@ -56,7 +56,7 @@ class DaemonOSEnvironmentError(DaemonError, OSError):
class DaemonProcessDetachError(DaemonError, OSError):
""" Exception raised when process detach fails. """
-
+
class DaemonContext:
""" Context for turning the current program into a daemon process.
@@ -245,7 +245,7 @@ class DaemonContext:
stdout=None,
stderr=None,
signal_map=None,
- ):
+ ):
""" Set up a new instance. """
self.chroot_directory = chroot_directory
self.working_directory = working_directory
@@ -427,8 +427,8 @@ class DaemonContext:
"""
exception = SystemExit(
- "Terminating on signal {signal_number!r}".format(
- signal_number=signal_number))
+ "Terminating on signal {signal_number!r}".format(
+ signal_number=signal_number))
raise exception
def _get_exclude_file_descriptors(self):
@@ -454,8 +454,8 @@ class DaemonContext:
if files_preserve is None:
files_preserve = []
files_preserve.extend(
- item for item in [self.stdin, self.stdout, self.stderr]
- if hasattr(item, 'fileno'))
+ item for item in [self.stdin, self.stdout, self.stderr]
+ if hasattr(item, 'fileno'))
exclude_descriptors = set()
for item in files_preserve:
@@ -502,8 +502,8 @@ class DaemonContext:
"""
signal_handler_map = dict(
- (signal_number, self._make_signal_handler(target))
- for (signal_number, target) in self.signal_map.items())
+ (signal_number, self._make_signal_handler(target))
+ for (signal_number, target) in self.signal_map.items())
return signal_handler_map
@@ -529,7 +529,7 @@ def _get_file_descriptor(obj):
return file_descriptor
-
+
def change_working_directory(directory):
""" Change the working directory of this process.
@@ -541,7 +541,7 @@ def change_working_directory(directory):
os.chdir(directory)
except Exception as exc:
error = DaemonOSEnvironmentError(
- "Unable to change working directory ({exc})".format(exc=exc))
+ "Unable to change working directory ({exc})".format(exc=exc))
raise error
@@ -561,7 +561,7 @@ def change_root_directory(directory):
os.chroot(directory)
except Exception as exc:
error = DaemonOSEnvironmentError(
- "Unable to change root directory ({exc})".format(exc=exc))
+ "Unable to change root directory ({exc})".format(exc=exc))
raise error
@@ -576,7 +576,7 @@ def change_file_creation_mask(mask):
os.umask(mask)
except Exception as exc:
error = DaemonOSEnvironmentError(
- "Unable to change file creation mask ({exc})".format(exc=exc))
+ "Unable to change file creation mask ({exc})".format(exc=exc))
raise error
@@ -597,10 +597,10 @@ def change_process_owner(uid, gid):
os.setuid(uid)
except Exception as exc:
error = DaemonOSEnvironmentError(
- "Unable to change process owner ({exc})".format(exc=exc))
+ "Unable to change process owner ({exc})".format(exc=exc))
raise error
-
+
def prevent_core_dump():
""" Prevent this process from generating a core dump.
@@ -618,15 +618,15 @@ def prevent_core_dump():
core_limit_prev = resource.getrlimit(core_resource)
except ValueError as exc:
error = DaemonOSEnvironmentError(
- "System does not support RLIMIT_CORE resource limit"
- " ({exc})".format(exc=exc))
+ "System does not support RLIMIT_CORE resource limit"
+ " ({exc})".format(exc=exc))
raise error
# Set hard and soft limits to zero, i.e. no core dump at all.
core_limit = (0, 0)
resource.setrlimit(core_resource, core_limit)
-
+
def detach_process_context():
""" Detach the process context from parent and session.
@@ -656,15 +656,15 @@ def detach_process_context():
os._exit(0)
except OSError as exc:
error = DaemonProcessDetachError(
- "{message}: [{exc.errno:d}] {exc.strerror}".format(
- message=error_message, exc=exc))
+ "{message}: [{exc.errno:d}] {exc.strerror}".format(
+ message=error_message, exc=exc))
raise error
fork_then_exit_parent(error_message="Failed first fork")
os.setsid()
fork_then_exit_parent(error_message="Failed second fork")
-
+
def is_process_started_by_init():
""" Determine whether the current process is started by `init`.
@@ -700,7 +700,7 @@ def is_socket(fd):
try:
socket_type = file_socket.getsockopt(
- socket.SOL_SOCKET, socket.SO_TYPE)
+ socket.SOL_SOCKET, socket.SO_TYPE)
except socket.error as exc:
exc_errno = exc.args[0]
if exc_errno == errno.ENOTSOCK:
@@ -759,7 +759,7 @@ def is_detach_process_context_required():
return result
-
+
def close_file_descriptor_if_open(fd):
""" Close a file descriptor if already open.
@@ -778,13 +778,14 @@ def close_file_descriptor_if_open(fd):
pass
else:
error = DaemonOSEnvironmentError(
- "Failed to close file descriptor {fd:d} ({exc})".format(
- fd=fd, exc=exc))
+ "Failed to close file descriptor {fd:d} ({exc})".format(
+ fd=fd, exc=exc))
raise error
MAXFD = 2048
+
def get_maximum_file_descriptors():
""" Get the maximum number of open file descriptors for this process.
@@ -820,7 +821,7 @@ def close_all_open_files(exclude=set()):
if fd not in exclude:
close_file_descriptor_if_open(fd)
-
+
def redirect_stream(system_stream, target_stream):
""" Redirect a system stream to a specified file.
@@ -844,7 +845,7 @@ def redirect_stream(system_stream, target_stream):
target_fd = target_stream.fileno()
os.dup2(target_fd, system_stream.fileno())
-
+
def make_default_signal_map():
""" Make the default signal map for this system.
@@ -855,15 +856,15 @@ def make_default_signal_map():
"""
name_map = {
- 'SIGTSTP': None,
- 'SIGTTIN': None,
- 'SIGTTOU': None,
- 'SIGTERM': 'terminate',
- }
+ 'SIGTSTP': None,
+ 'SIGTTIN': None,
+ 'SIGTTOU': None,
+ 'SIGTERM': 'terminate',
+ }
signal_map = dict(
- (getattr(signal, name), target)
- for (name, target) in name_map.items()
- if hasattr(signal, name))
+ (getattr(signal, name), target)
+ for (name, target) in name_map.items()
+ if hasattr(signal, name))
return signal_map
@@ -895,7 +896,7 @@ def register_atexit_function(func):
"""
atexit.register(func)
-
+
def _chain_exception_from_existing_exception_context(exc, as_cause=False):
""" Decorate the specified exception with the existing exception context.
@@ -918,7 +919,7 @@ def _chain_exception_from_existing_exception_context(exc, as_cause=False):
exc.__context__ = existing_exc
exc.__traceback__ = existing_traceback
-
+
# Local variables:
# coding: utf-8
# mode: python
diff --git a/pkg/osx/pidfile.py b/pkg/osx/pidfile.py
index 4517ee0e..68f7b2ac 100644
--- a/pkg/osx/pidfile.py
+++ b/pkg/osx/pidfile.py
@@ -17,7 +17,7 @@ from __future__ import (absolute_import, unicode_literals)
from lockfile.pidlockfile import PIDLockFile
-
+
class TimeoutPIDLockFile(PIDLockFile, object):
""" Lockfile with default timeout, implemented as a Unix PID file.
@@ -59,7 +59,7 @@ class TimeoutPIDLockFile(PIDLockFile, object):
timeout = self.acquire_timeout
super(TimeoutPIDLockFile, self).acquire(timeout, *args, **kwargs)
-
+
# Local variables:
# coding: utf-8
# mode: python
diff --git a/pkg/osx/runner.py b/pkg/osx/runner.py
index 6973cf1c..de9025d3 100644
--- a/pkg/osx/runner.py
+++ b/pkg/osx/runner.py
@@ -37,7 +37,7 @@ from .daemon import (basestring, unicode)
from .daemon import DaemonContext
from .daemon import _chain_exception_from_existing_exception_context
-
+
class DaemonRunnerError(Exception):
""" Abstract base class for errors from DaemonRunner. """
@@ -65,7 +65,7 @@ class DaemonRunnerStartFailureError(DaemonRunnerError, RuntimeError):
class DaemonRunnerStopFailureError(DaemonRunnerError, RuntimeError):
""" Raised when failure stopping DaemonRunner. """
-
+
class DaemonRunner:
""" Controller for a callable running in a separate background process.
@@ -110,12 +110,12 @@ class DaemonRunner:
self.daemon_context.stdin = open(app.stdin_path, 'rt')
self.daemon_context.stdout = open(app.stdout_path, 'w+t')
self.daemon_context.stderr = open(
- app.stderr_path, 'w+t', buffering=0)
+ app.stderr_path, 'w+t', buffering=0)
self.pidfile = None
if app.pidfile_path is not None:
self.pidfile = make_pidlockfile(
- app.pidfile_path, app.pidfile_timeout)
+ app.pidfile_path, app.pidfile_timeout)
self.daemon_context.pidfile = self.pidfile
def _usage_exit(self, argv):
@@ -130,7 +130,7 @@ class DaemonRunner:
usage_exit_code = 2
action_usage = "|".join(self.action_funcs.keys())
message = "usage: {progname} {usage}".format(
- progname=progname, usage=action_usage)
+ progname=progname, usage=action_usage)
emit_message(message)
sys.exit(usage_exit_code)
@@ -175,8 +175,8 @@ class DaemonRunner:
self.daemon_context.open()
except lockfile.AlreadyLocked:
error = DaemonRunnerStartFailureError(
- "PID file {pidfile.path!r} already locked".format(
- pidfile=self.pidfile))
+ "PID file {pidfile.path!r} already locked".format(
+ pidfile=self.pidfile))
raise error
pid = os.getpid()
@@ -198,8 +198,8 @@ class DaemonRunner:
os.kill(pid, signal.SIGTERM)
except OSError as exc:
error = DaemonRunnerStopFailureError(
- "Failed to terminate {pid:d}: {exc}".format(
- pid=pid, exc=exc))
+ "Failed to terminate {pid:d}: {exc}".format(
+ pid=pid, exc=exc))
raise error
def _stop(self):
@@ -212,8 +212,8 @@ class DaemonRunner:
"""
if not self.pidfile.is_locked():
error = DaemonRunnerStopFailureError(
- "PID file {pidfile.path!r} not locked".format(
- pidfile=self.pidfile))
+ "PID file {pidfile.path!r} not locked".format(
+ pidfile=self.pidfile))
raise error
if is_pidfile_stale(self.pidfile):
@@ -228,10 +228,10 @@ class DaemonRunner:
self._start()
action_funcs = {
- 'start': _start,
- 'stop': _stop,
- 'restart': _restart,
- }
+ 'start': _start,
+ 'stop': _stop,
+ 'restart': _restart,
+ }
def _get_action_func(self):
""" Get the function for the specified action.
@@ -249,8 +249,8 @@ class DaemonRunner:
func = self.action_funcs[self.action]
except KeyError:
error = DaemonRunnerInvalidActionError(
- "Unknown action: {action!r}".format(
- action=self.action))
+ "Unknown action: {action!r}".format(
+ action=self.action))
raise error
return func
@@ -279,11 +279,11 @@ def make_pidlockfile(path, acquire_timeout):
""" Make a PIDLockFile instance with the given filesystem path. """
if not isinstance(path, basestring):
error = ValueError("Not a filesystem path: {path!r}".format(
- path=path))
+ path=path))
raise error
if not os.path.isabs(path):
error = ValueError("Not an absolute path: {path!r}".format(
- path=path))
+ path=path))
raise error
lockfile = pidfile.TimeoutPIDLockFile(path, acquire_timeout)
@@ -316,7 +316,7 @@ def is_pidfile_stale(pidfile):
return result
-
+
# Local variables:
# coding: utf-8
# mode: python