netdata/python.d/rethinkdbs.chart.py at master · devanthonyp/netdata · GitHub

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

# Description: rethinkdb netdata python.d module

# Author: Ilya Mashchenko (l2isbad)

# SPDX-License-Identifier: GPL-3.0+

try:

import rethinkdb as rdb

HAS_RETHINKDB = True

except ImportError:

HAS_RETHINKDB = False

from bases.FrameworkServices.SimpleService import SimpleService

ORDER = [

'cluster_connected_servers',

'cluster_clients_active',

'cluster_queries',

'cluster_documents',

]

def cluster_charts():

return {

'cluster_connected_servers': {

'options': [None, 'Connected Servers', 'servers', 'cluster', 'rethinkdb.cluster_connected_servers',

'stacked'],

'lines': [

['cluster_servers_connected', 'connected'],

['cluster_servers_missing', 'missing'],

]

'cluster_clients_active': {

'options': [None, 'Active Clients', 'clients', 'cluster', 'rethinkdb.cluster_clients_active',

'line'],

'lines': [

['cluster_clients_active', 'active'],

]

'cluster_queries': {

'options': [None, 'Queries', 'queries/s', 'cluster', 'rethinkdb.cluster_queries', 'line'],

'lines': [

['cluster_queries_per_sec', 'queries'],

]

'cluster_documents': {

'options': [None, 'Documents', 'documents/s', 'cluster', 'rethinkdb.cluster_documents', 'line'],

'lines': [

['cluster_read_docs_per_sec', 'reads'],

['cluster_written_docs_per_sec', 'writes'],

]

}

def server_charts(n):

o = [

'{0}_client_connections'.format(n),

'{0}_clients_active'.format(n),

'{0}_queries'.format(n),

'{0}_documents'.format(n),

]

f = 'server {0}'.format(n)

c = {

o[0]: {

'options': [None, 'Client Connections', 'connections', f, 'rethinkdb.client_connections', 'line'],

'lines': [

['{0}_client_connections'.format(n), 'connections'],

]

o[1]: {

'options': [None, 'Active Clients', 'clients', f, 'rethinkdb.clients_active', 'line'],

'lines': [

['{0}_clients_active'.format(n), 'active'],

]

o[2]: {

'options': [None, 'Queries', 'queries/s', f, 'rethinkdb.queries', 'line'],

'lines': [

['{0}_queries_total'.format(n), 'queries', 'incremental'],

]

o[3]: {

'options': [None, 'Documents', 'documents/s', f, 'rethinkdb.documents', 'line'],

'lines': [

['{0}_read_docs_total'.format(n), 'reads', 'incremental'],

['{0}_written_docs_total'.format(n), 'writes', 'incremental'],

]

}

return o, c

class Cluster:

def __init__(self, raw):

self.raw = raw

def data(self):

qe = self.raw['query_engine']

return {

'cluster_clients_active': qe['clients_active'],

'cluster_queries_per_sec': qe['queries_per_sec'],

'cluster_read_docs_per_sec': qe['read_docs_per_sec'],

'cluster_written_docs_per_sec': qe['written_docs_per_sec'],

'cluster_servers_connected': 0,

'cluster_servers_missing': 0,

}

class Server:

def __init__(self, raw):

self.name = raw['server']

self.raw = raw

def error(self):

return self.raw.get('error')

def data(self):

qe = self.raw['query_engine']

d = {

'client_connections': qe['client_connections'],

'clients_active': qe['clients_active'],

'queries_total': qe['queries_total'],

'read_docs_total': qe['read_docs_total'],

'written_docs_total': qe['written_docs_total'],

}

return dict(('{0}_{1}'.format(self.name, k), d[k]) for k in d)

class Service(SimpleService):

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

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

self.order = list(ORDER)

self.definitions = cluster_charts()

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

self.port = self.configuration.get('port', 28015)

self.user = self.configuration.get('user', 'admin')

self.password = self.configuration.get('password')

self.timeout = self.configuration.get('timeout', 2)

self.conn = None

self.alive = True

def check(self):

if not HAS_RETHINKDB:

self.error('"rethinkdb" module is needed to use rethinkdbs.py')

return False

if not self.connect():

return None

stats = self.get_stats()

if not stats:

return None

for v in stats[1:]:

if get_id(v) == 'server':

o, c = server_charts(v['server'])

self.order.extend(o)

self.definitions.update(c)

return True

def get_data(self):

if not self.is_alive():

return None

stats = self.get_stats()

if not stats:

return None

data = dict()

# cluster

data.update(Cluster(stats[0]).data())

# servers

for v in stats[1:]:

if get_id(v) != 'server':

continue

s = Server(v)

if s.error():

data['cluster_servers_missing'] += 1

else:

data['cluster_servers_connected'] += 1

data.update(s.data())

return data

def get_stats(self):

try:

return list(rdb.db('rethinkdb').table('stats').run(self.conn).items)

except rdb.errors.ReqlError:

self.alive = False

return None

def connect(self):

try:

self.conn = rdb.connect(

host=self.host,

port=self.port,

user=self.user,

password=self.password,

timeout=self.timeout,

)

self.alive = True

return True

except rdb.errors.ReqlError as error:

self.error('Connection to {0}:{1} failed: {2}'.format(self.host, self.port, error))

return False

def reconnect(self):

# The connection is already closed after rdb.errors.ReqlError,

# so we do not need to call conn.close()

if self.connect():

return True

return False

def is_alive(self):

if not self.alive:

return self.reconnect()

return True

def get_id(v):

return v['id'][0]

netdata/python.d/rethinkdbs.chart.py at master · devanthonyp/netdata · GitHub

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