netdata/python.d/rabbitmq.chart.py at master · d4tocchini/netdata · GitHub

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# -*- coding: utf-8 -*-

# Description: rabbitmq netdata python.d module

# Author: l2isbad

# SPDX-License-Identifier: GPL-3.0+

from collections import namedtuple

from json import loads

from socket import gethostbyname, gaierror

from threading import Thread

try:

from queue import Queue

except ImportError:

from Queue import Queue

from bases.FrameworkServices.UrlService import UrlService

# default module values (can be overridden per job in `config`)

update_every = 1

priority = 60000

retries = 60

METHODS = namedtuple('METHODS', ['get_data', 'url', 'stats'])

NODE_STATS = ['fd_used',

'mem_used',

'sockets_used',

'proc_used',

'disk_free',

'run_queue'

]

OVERVIEW_STATS = ['object_totals.channels',

'object_totals.consumers',

'object_totals.connections',

'object_totals.queues',

'object_totals.exchanges',

'queue_totals.messages_ready',

'queue_totals.messages_unacknowledged',

'message_stats.ack',

'message_stats.redeliver',

'message_stats.deliver',

'message_stats.publish'

]

ORDER = ['queued_messages', 'message_rates', 'global_counts',

'file_descriptors', 'socket_descriptors', 'erlang_processes', 'erlang_run_queue', 'memory', 'disk_space']

CHARTS = {

'file_descriptors': {

'options': [None, 'File Descriptors', 'descriptors', 'overview',

'rabbitmq.file_descriptors', 'line'],

'lines': [

['fd_used', 'used', 'absolute']

]},

'memory': {

'options': [None, 'Memory', 'MB', 'overview',

'rabbitmq.memory', 'line'],

'lines': [

['mem_used', 'used', 'absolute', 1, 1024 << 10]

]},

'disk_space': {

'options': [None, 'Disk Space', 'GB', 'overview',

'rabbitmq.disk_space', 'line'],

'lines': [

['disk_free', 'free', 'absolute', 1, 1024 ** 3]

]},

'socket_descriptors': {

'options': [None, 'Socket Descriptors', 'descriptors', 'overview',

'rabbitmq.sockets', 'line'],

'lines': [

['sockets_used', 'used', 'absolute']

]},

'erlang_processes': {

'options': [None, 'Erlang Processes', 'processes', 'overview',

'rabbitmq.processes', 'line'],

'lines': [

['proc_used', 'used', 'absolute']

]},

'erlang_run_queue': {

'options': [None, 'Erlang Run Queue', 'processes', 'overview',

'rabbitmq.erlang_run_queue', 'line'],

'lines': [

['run_queue',' length', 'absolute']

]},

'global_counts': {

'options': [None, 'Global Counts', 'counts', 'overview',

'rabbitmq.global_counts', 'line'],

'lines': [

['object_totals_channels', 'channels', 'absolute'],

['object_totals_consumers', 'consumers', 'absolute'],

['object_totals_connections', 'connections', 'absolute'],

['object_totals_queues', 'queues', 'absolute'],

['object_totals_exchanges', 'exchanges', 'absolute']

]},

'queued_messages': {

'options': [None, 'Queued Messages', 'messages', 'overview',

'rabbitmq.queued_messages', 'stacked'],

'lines': [

['queue_totals_messages_ready', 'ready', 'absolute'],

['queue_totals_messages_unacknowledged', 'unacknowledged', 'absolute']

]},

'message_rates': {

'options': [None, 'Message Rates', 'messages/s', 'overview',

'rabbitmq.message_rates', 'stacked'],

'lines': [

['message_stats_ack', 'ack', 'incremental'],

['message_stats_redeliver', 'redeliver', 'incremental'],

['message_stats_deliver', 'deliver', 'incremental'],

['message_stats_publish', 'publish', 'incremental']

]}

}

class Service(UrlService):

def __init__(self, configuration=None, name=None):

UrlService.__init__(self, configuration=configuration, name=name)

self.order = ORDER

self.definitions = CHARTS

self.host = self.configuration.get('host', '127.0.0.1')

self.port = self.configuration.get('port', 15672)

self.scheme = self.configuration.get('scheme', 'http')

def check(self):

# We can't start if <host> AND <port> not specified

if not (self.host and self.port):

self.error('Host is not defined in the module configuration file')

return False

# Hostname -> ip address

try:

self.host = gethostbyname(self.host)

except gaierror as error:

self.error(str(error))

return False

# Add handlers (auth, self signed cert accept)

self.url = '{scheme}://{host}:{port}/api'.format(scheme=self.scheme,

host=self.host,

port=self.port)

# Add methods

api_node = self.url + '/nodes'

api_overview = self.url + '/overview'

self.methods = [METHODS(get_data=self._get_overview_stats,

url=api_node,

stats=NODE_STATS),

METHODS(get_data=self._get_overview_stats,

url=api_overview,

stats=OVERVIEW_STATS)]

return UrlService.check(self)

def _get_data(self):

threads = list()

queue = Queue()

result = dict()

for method in self.methods:

th = Thread(target=method.get_data,

args=(queue, method.url, method.stats))

th.start()

threads.append(th)

for thread in threads:

thread.join()

result.update(queue.get())

return result or None

def _get_overview_stats(self, queue, url, stats):

"""

Format data received from http request

:return: dict

"""

raw_data = self._get_raw_data(url)

if not raw_data:

return queue.put(dict())

data = loads(raw_data)

data = data[0] if isinstance(data, list) else data

to_netdata = fetch_data(raw_data=data, metrics=stats)

return queue.put(to_netdata)

def fetch_data(raw_data, metrics):

data = dict()

for metric in metrics:

value = raw_data

metrics_list = metric.split('.')

try:

for m in metrics_list:

value = value[m]

except KeyError:

continue

data['_'.join(metrics_list)] = value

return data

netdata/python.d/rabbitmq.chart.py at master · d4tocchini/netdata · GitHub

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