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# -*- coding: utf-8 -*-
# Description: uwsgi netdata python.d module
# Author: Robbert Segeren (robbert-ef)
# SPDX-License-Identifier: GPL-3.0-or-later
import json
from copy import deepcopy
from bases.FrameworkServices.SocketService import SocketService
ORDER = [
'requests',
'tx',
'avg_rt',
'memory_rss',
'memory_vsz',
'exceptions',
'harakiri',
'respawn',
]
DYNAMIC_CHARTS = [
'requests',
'tx',
'avg_rt',
'memory_rss',
'memory_vsz',
]
# NOTE: lines are created dynamically in `check()` method
CHARTS = {
'requests': {
'options': [None, 'Requests', 'requests/s', 'requests', 'uwsgi.requests', 'stacked'],
'lines': [
['requests', 'requests', 'incremental']
]
},
'tx': {
'options': [None, 'Transmitted data', 'KiB/s', 'requests', 'uwsgi.tx', 'stacked'],
'lines': [
['tx', 'tx', 'incremental']
]
},
'avg_rt': {
'options': [None, 'Average request time', 'milliseconds', 'requests', 'uwsgi.avg_rt', 'line'],
'lines': [
['avg_rt', 'avg_rt', 'absolute']
]
},
'memory_rss': {
'options': [None, 'RSS (Resident Set Size)', 'MiB', 'memory', 'uwsgi.memory_rss', 'stacked'],
'lines': [
['memory_rss', 'memory_rss', 'absolute', 1, 1 << 20]
]
},
'memory_vsz': {
'options': [None, 'VSZ (Virtual Memory Size)', 'MiB', 'memory', 'uwsgi.memory_vsz', 'stacked'],
'lines': [
['memory_vsz', 'memory_vsz', 'absolute', 1, 1 << 20]
]
},
'exceptions': {
'options': [None, 'Exceptions', 'exceptions', 'exceptions', 'uwsgi.exceptions', 'line'],
'lines': [
['exceptions', 'exceptions', 'incremental']
]
},
'harakiri': {
'options': [None, 'Harakiris', 'harakiris', 'harakiris', 'uwsgi.harakiris', 'line'],
'lines': [
['harakiri_count', 'harakiris', 'incremental']
]
},
'respawn': {
'options': [None, 'Respawns', 'respawns', 'respawns', 'uwsgi.respawns', 'line'],
'lines': [
['respawn_count', 'respawns', 'incremental']
]
},
}
class Service(SocketService):
def __init__(self, configuration=None, name=None):
super(Service, self).__init__(configuration=configuration, name=name)
self.order = ORDER
self.definitions = deepcopy(CHARTS)
self.url = self.configuration.get('host', 'localhost')
self.port = self.configuration.get('port', 1717)
# Clear dynamic dimensions, these are added during `_get_data()` to allow adding workers at run-time
for chart in DYNAMIC_CHARTS:
self.definitions[chart]['lines'] = []
self.last_result = {}
self.workers = []
def read_data(self):
"""
Read data from socket and parse as JSON.
:return: (dict) stats
"""
raw_data = self._get_raw_data()
if not raw_data:
return None
try:
return json.loads(raw_data)
except ValueError as err:
self.error(err)
return None
def check(self):
"""
Parse configuration and check if we can read data.
:return: boolean
"""
self._parse_config()
return bool(self.read_data())
def add_worker_dimensions(self, key):
"""
Helper to add dimensions for a worker.
:param key: (int or str) worker identifier
:return:
"""
for chart in DYNAMIC_CHARTS:
for line in CHARTS[chart]['lines']:
dimension_id = '{}_{}'.format(line[0], key)
dimension_name = str(key)
dimension = [dimension_id, dimension_name] + line[2:]
self.charts[chart].add_dimension(dimension)
@staticmethod
def _check_raw_data(data):
# The server will close the connection when it's done sending
# data, so just keep looping until that happens.
return False
def _get_data(self):
"""
Read data from socket
:return: dict
"""
stats = self.read_data()
if not stats:
return None
result = {
'exceptions': 0,
'harakiri_count': 0,
'respawn_count': 0,
}
for worker in stats['workers']:
key = worker['pid']
# Add dimensions for new workers
if key not in self.workers:
self.add_worker_dimensions(key)
self.workers.append(key)
result['requests_{}'.format(key)] = worker['requests']
result['tx_{}'.format(key)] = worker['tx']
result['avg_rt_{}'.format(key)] = worker['avg_rt']
# avg_rt is not reset by uwsgi, so reset here
if self.last_result.get('requests_{}'.format(key)) == worker['requests']:
result['avg_rt_{}'.format(key)] = 0
result['memory_rss_{}'.format(key)] = worker['rss']
result['memory_vsz_{}'.format(key)] = worker['vsz']
result['exceptions'] += worker['exceptions']
result['harakiri_count'] += worker['harakiri_count']
result['respawn_count'] += worker['respawn_count']
self.last_result = result
return result
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