# Path: kingpin/kazoo_utils/utils.py
# def _escape_path_for_stats_name(path):
#     def __init__(self, *args, **kwargs):
#     def increment(self, stats, sample_rate=1, tags={}):
#     def gauge(self, stats, value, sample_rate=1, tags={}):
# class DummyStatsdClient:
# 
# Path: kingpin/kazoo_utils/utils.py
# def _escape_path_for_stats_name(path):
#     def __init__(self, *args, **kwargs):
#     def increment(self, stats, sample_rate=1, tags={}):
#     def gauge(self, stats, value, sample_rate=1, tags={}):
# class DummyStatsdClient:
# 
# Path: kingpin/kazoo_utils/utils.py
# def _escape_path_for_stats_name(path):
#     # Do some formatting the file path.
#     if path is None:
#         return None
#     if path.startswith("/"):
#         path = path[1:]
#     return path.replace("/", "_")
# 
# Path: kingpin/kazoo_utils/decorators.py
# class SingletonMetaclass(type):
#     """Singleton class that ensures there is only one instance of the object.
# 
#     Instead of using ``singleton`` decorator use this metaclass. This ensures
#     that classes remain classes as opposed to
#     functions that return classes, as that is the approach the decorator takes.
# 
#     For more details consult
#     http://stackoverflow.com/questions/8563130/python-singleton-class.
# 
#     To make your class singleton add ``__metaclass__``::
# 
#         class Highlander(object)
#             '''There can be only one!'''
# 
#             __metaclass__ = SingletonMetaclass
# 
#             def __init__(self):
#                 self.x = 1
# 
#     """
#     def __init__(cls, *args, **kwargs):
#         super(SingletonMetaclass, cls).__init__(*args, **kwargs)
#         cls.__instance = None
#         cls.__lock = threading.RLock()
# 
#     def __call__(cls, *args, **kwargs):
#         # Make this thread safe.
#         with cls.__lock:
#             if cls.__instance is None:
#                 cls.__instance = super(SingletonMetaclass, cls).__call__(
#                     *args, **kwargs)
#         return cls.__instance
# 
# Path: kingpin/thrift_utils/periodical.py
# class Periodical(object):
#     def __init__(self, name, interval_secs, start_after_secs,
#                  f, *args, **kwargs):
#         """Constructor.
# 
#         Args:
#             name: name of the periodical for bookkeeping.
#             interval_secs: frequency to run.
#             start_after_secs: first run starts after start_after_secs.
#             f: function to run.
#             args: args passed to f
#             kwargs: kwargs passed to f
# 
#         """
#         self.name = name
#         self.interval_secs = interval_secs
# 
#         self.f = f
#         self.args = args
#         self.kwargs = kwargs
# 
#         self.last_timestamp = time.time() + start_after_secs - interval_secs
#         self.greenlet = gevent.spawn(self._run)
# 
#     def _run(self):
#         """Run the wrapped function periodically"""
#         try:
#             while True:
#                 ts = time.time()
#                 if self.last_timestamp + self.interval_secs <= ts:
#                     self.last_timestamp = ts
#                     try:
#                         self.f(*self.args, **self.kwargs)
#                     except gevent.GreenletExit:
#                         # We are notified to exit.
#                         raise
#                     except BaseException as e:
#                         # We ignore other exceptions.
#                         log.error("Exception %s caught in Periodical %s " % (
#                             repr(e), self.name))
# 
#                 # sleep until the time for the next run.
#                 sleep_secs = self.last_timestamp + self.interval_secs \
#                     - time.time()
# 
#                 if sleep_secs < 0:
#                     sleep_secs = 0
# 
#                 gevent.sleep(sleep_secs)
# 
#         except gevent.GreenletExit:
#             log.info("Periodical %s stopped." % self.name)
# 
#     def stop(self):
#         """Stop the periodical.
# 
#         It must be called in order to garbage collect this object.
# 
#         """
#         self.greenlet.kill(block=True)


from collections import namedtuple
from functools import wraps
from .utils import dummy_statsd
from .utils import hostname
from .utils import _escape_path_for_stats_name
from .decorators import SingletonMetaclass
from ..thrift_utils.periodical import Periodical
import datetime
import gevent
import hashlib
import logging
import os



log = logging.getLogger(__name__)


# Currently the polling is by default to run every 30 seconds.
# The class is a singleton, we can come up a way to allow customizing
# the frequency in the future if necessary.
_POLLING_WAIT_IN_SECONDS = 30


def timeout_after(secs):
    """Decorator to timeout a function.

    It raises a gevent.Timeout exception after the specified seconds in
    the decorated function. The timeout will work only if the decorated
    function yields, e.g. performing blocking operations through gevent.

    """
    def timeout_enforced(f):
        @wraps(f)
        def g(*args, **kwargs):
            return gevent.with_timeout(secs, f, *args, **kwargs)
        return g
    return timeout_enforced


class FileWatch:


# Path: kingpin/kazoo_utils/utils.py
# def _escape_path_for_stats_name(path):
#     def __init__(self, *args, **kwargs):
#     def increment(self, stats, sample_rate=1, tags={}):
#     def gauge(self, stats, value, sample_rate=1, tags={}):
# class DummyStatsdClient:
# 
# Path: kingpin/kazoo_utils/utils.py
# def _escape_path_for_stats_name(path):
#     def __init__(self, *args, **kwargs):
#     def increment(self, stats, sample_rate=1, tags={}):
#     def gauge(self, stats, value, sample_rate=1, tags={}):
# class DummyStatsdClient:
# 
# Path: kingpin/kazoo_utils/utils.py
# def _escape_path_for_stats_name(path):
#     # Do some formatting the file path.
#     if path is None:
#         return None
#     if path.startswith("/"):
#         path = path[1:]
#     return path.replace("/", "_")
# 
# Path: kingpin/kazoo_utils/decorators.py
# class SingletonMetaclass(type):
#     """Singleton class that ensures there is only one instance of the object.
# 
#     Instead of using ``singleton`` decorator use this metaclass. This ensures
#     that classes remain classes as opposed to
#     functions that return classes, as that is the approach the decorator takes.
# 
#     For more details consult
#     http://stackoverflow.com/questions/8563130/python-singleton-class.
# 
#     To make your class singleton add ``__metaclass__``::
# 
#         class Highlander(object)
#             '''There can be only one!'''
# 
#             __metaclass__ = SingletonMetaclass
# 
#             def __init__(self):
#                 self.x = 1
# 
#     """
#     def __init__(cls, *args, **kwargs):
#         super(SingletonMetaclass, cls).__init__(*args, **kwargs)
#         cls.__instance = None
#         cls.__lock = threading.RLock()
# 
#     def __call__(cls, *args, **kwargs):
#         # Make this thread safe.
#         with cls.__lock:
#             if cls.__instance is None:
#                 cls.__instance = super(SingletonMetaclass, cls).__call__(
#                     *args, **kwargs)
#         return cls.__instance
# 
# Path: kingpin/thrift_utils/periodical.py
# class Periodical(object):
#     def __init__(self, name, interval_secs, start_after_secs,
#                  f, *args, **kwargs):
#         """Constructor.
# 
#         Args:
#             name: name of the periodical for bookkeeping.
#             interval_secs: frequency to run.
#             start_after_secs: first run starts after start_after_secs.
#             f: function to run.
#             args: args passed to f
#             kwargs: kwargs passed to f
# 
#         """
#         self.name = name
#         self.interval_secs = interval_secs
# 
#         self.f = f
#         self.args = args
#         self.kwargs = kwargs
# 
#         self.last_timestamp = time.time() + start_after_secs - interval_secs
#         self.greenlet = gevent.spawn(self._run)
# 
#     def _run(self):
#         """Run the wrapped function periodically"""
#         try:
#             while True:
#                 ts = time.time()
#                 if self.last_timestamp + self.interval_secs <= ts:
#                     self.last_timestamp = ts
#                     try:
#                         self.f(*self.args, **self.kwargs)
#                     except gevent.GreenletExit:
#                         # We are notified to exit.
#                         raise
#                     except BaseException as e:
#                         # We ignore other exceptions.
#                         log.error("Exception %s caught in Periodical %s " % (
#                             repr(e), self.name))
# 
#                 # sleep until the time for the next run.
#                 sleep_secs = self.last_timestamp + self.interval_secs \
#                     - time.time()
# 
#                 if sleep_secs < 0:
#                     sleep_secs = 0
# 
#                 gevent.sleep(sleep_secs)
# 
#         except gevent.GreenletExit:
#             log.info("Periodical %s stopped." % self.name)
# 
#     def stop(self):
#         """Stop the periodical.
# 
#         It must be called in order to garbage collect this object.
# 
#         """
#         self.greenlet.kill(block=True)


# Path: kingpin/kazoo_utils/file_watch.py
from collections import namedtuple
from functools import wraps
from .utils import dummy_statsd
from .utils import hostname
from .utils import _escape_path_for_stats_name
from .decorators import SingletonMetaclass
from ..thrift_utils.periodical import Periodical
import datetime
import gevent
import hashlib
import logging
import os




log = logging.getLogger(__name__)


# Currently the polling is by default to run every 30 seconds.
# The class is a singleton, we can come up a way to allow customizing
# the frequency in the future if necessary.
_POLLING_WAIT_IN_SECONDS = 30


def timeout_after(secs):
    """Decorator to timeout a function.

    It raises a gevent.Timeout exception after the specified seconds in
    the decorated function. The timeout will work only if the decorated
    function yields, e.g. performing blocking operations through gevent.

    """
    def timeout_enforced(f):
        @wraps(f)
        def g(*args, **kwargs):
            return gevent.with_timeout(secs, f, *args, **kwargs)
        return g
    return timeout_enforced


class FileWatch:


    __metaclass__ = SingletonMetaclass