FM / prometheus

/opt/imh-python/lib/python3.9/site-packages/prometheus_client/

/opt/imh-python/lib/python3.9/site-packages/prometheus_client

Name	Size	Mode	Actions
bridge/	-	0755	rm
openmetrics/	-	0755	rm
twisted/	-	0755	rm
__pycache__/	-	0755	rm
asgi.py	1619	0644	edit dl rm
context_managers.py	2322	0644	edit dl rm
core.py	860	0644	edit dl rm
decorator.py	15802	0644	edit dl rm
exposition.py	22863	0644	edit dl rm
gc_collector.py	1513	0644	edit dl rm
metrics.py	25925	0644	edit dl rm
metrics_core.py	15538	0644	edit dl rm
mmap_dict.py	5245	0644	edit dl rm
multiprocess.py	6932	0644	edit dl rm
parser.py	7113	0644	edit dl rm
platform_collector.py	1869	0644	edit dl rm
process_collector.py	3844	0644	edit dl rm
py.typed	0	0644	edit dl rm
registry.py	6196	0644	edit dl rm
samples.py	1520	0644	edit dl rm
utils.py	594	0644	edit dl rm
values.py	4775	0644	edit dl rm
__init__.py	1688	0644	edit dl rm

Edit: /opt/imh-python/lib/python3.9/site-packages/prometheus_client/values.py (4775B)

import os
from threading import Lock
import warnings

from .mmap_dict import mmap_key, MmapedDict

class MutexValue:
    """A float protected by a mutex."""

_multiprocess = False

def __init__(self, typ, metric_name, name, labelnames, labelvalues, **kwargs):
        self._value = 0.0
        self._exemplar = None
        self._lock = Lock()

def inc(self, amount):
        with self._lock:
            self._value += amount

def set(self, value):
        with self._lock:
            self._value = value

def set_exemplar(self, exemplar):
        with self._lock:
            self._exemplar = exemplar

def get(self):
        with self._lock:
            return self._value

def get_exemplar(self):
        with self._lock:
            return self._exemplar

def MultiProcessValue(process_identifier=os.getpid):
    """Returns a MmapedValue class based on a process_identifier function.

The 'process_identifier' function MUST comply with this simple rule:
    when called in simultaneously running processes it MUST return distinct values.

Using a different function than the default 'os.getpid' is at your own risk.
    """
    files = {}
    values = []
    pid = {'value': process_identifier()}
    # Use a single global lock when in multi-processing mode
    # as we presume this means there is no threading going on.
    # This avoids the need to also have mutexes in __MmapDict.
    lock = Lock()

class MmapedValue:
        """A float protected by a mutex backed by a per-process mmaped file."""

_multiprocess = True

def __init__(self, typ, metric_name, name, labelnames, labelvalues, multiprocess_mode='', **kwargs):
            self._params = typ, metric_name, name, labelnames, labelvalues, multiprocess_mode
            # This deprecation warning can go away in a few releases when removing the compatibility
            if 'prometheus_multiproc_dir' in os.environ and 'PROMETHEUS_MULTIPROC_DIR' not in os.environ:
                os.environ['PROMETHEUS_MULTIPROC_DIR'] = os.environ['prometheus_multiproc_dir']
                warnings.warn("prometheus_multiproc_dir variable has been deprecated in favor of the upper case naming PROMETHEUS_MULTIPROC_DIR", DeprecationWarning)
            with lock:
                self.__check_for_pid_change()
                self.__reset()
                values.append(self)

def __reset(self):
            typ, metric_name, name, labelnames, labelvalues, multiprocess_mode = self._params
            if typ == 'gauge':
                file_prefix = typ + '_' + multiprocess_mode
            else:
                file_prefix = typ
            if file_prefix not in files:
                filename = os.path.join(
                    os.environ.get('PROMETHEUS_MULTIPROC_DIR'),
                    '{}_{}.db'.format(file_prefix, pid['value']))

files[file_prefix] = MmapedDict(filename)
            self._file = files[file_prefix]
            self._key = mmap_key(metric_name, name, labelnames, labelvalues)
            self._value = self._file.read_value(self._key)

def __check_for_pid_change(self):
            actual_pid = process_identifier()
            if pid['value'] != actual_pid:
                pid['value'] = actual_pid
                # There has been a fork(), reset all the values.
                for f in files.values():
                    f.close()
                files.clear()
                for value in values:
                    value.__reset()

def inc(self, amount):
            with lock:
                self.__check_for_pid_change()
                self._value += amount
                self._file.write_value(self._key, self._value)

def set(self, value):
            with lock:
                self.__check_for_pid_change()
                self._value = value
                self._file.write_value(self._key, self._value)

def set_exemplar(self, exemplar):
            # TODO: Implement exemplars for multiprocess mode.
            return

def get(self):
            with lock:
                self.__check_for_pid_change()
                return self._value

def get_exemplar(self):
            # TODO: Implement exemplars for multiprocess mode.
            return None

return MmapedValue

def get_value_class():
    # Should we enable multi-process mode?
    # This needs to be chosen before the first metric is constructed,
    # and as that may be in some arbitrary library the user/admin has
    # no control over we use an environment variable.
    if 'prometheus_multiproc_dir' in os.environ or 'PROMETHEUS_MULTIPROC_DIR' in os.environ:
        return MultiProcessValue()
    else:
        return MutexValue

ValueClass = get_value_class()

cmd: