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### Author: <gianfranco@mongodb.com>
global mongodb_user
mongodb_user = os.getenv('DSTAT_MONGODB_USER') or os.getenv('USER')
global mongodb_pwd
mongodb_pwd = os.getenv('DSTAT_MONGODB_PWD')
global mongodb_host
mongodb_host = os.getenv('DSTAT_MONGODB_HOST') or '127.0.0.1:27017'
class dstat_plugin(dstat):
"""
Plugin for MongoDB.
"""
def __init__(self):
global pymongo
import pymongo
try:
self.m = pymongo.MongoClient(mongodb_host)
if mongodb_pwd:
self.m.admin.authenticate(mongodb_user, mongodb_pwd)
self.db = self.m.admin
except Exception as e:
raise Exception('Cannot interface with MongoDB server: %s' % e)
self.name = 'mongodb queues'
self.nick = ('ar', 'aw', 'qt', 'qw')
self.vars = ('ar', 'aw', 'qt', 'qw')
self.type = 'd'
self.width = 5
self.scale = 2
self.lastVal = {}
def extract(self):
status = self.db.command("serverStatus")
glock = status['globalLock']
alock = glock['activeClients']
qlock = glock['currentQueue']
self.val['ar'] = int(alock['readers'])
self.val['aw'] = int(alock['writers'])
self.val['qr'] = int(qlock['readers'])
self.val['qw'] = int(qlock['writers'])
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