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0936134 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 | # -*- coding: utf-8 -*-
#
# Copyright @ 2015 OPS, Qunar Inc. (qunar.com)
# Author: ning.xie <andy.xning@qunar.com>
#
import os
import signal
import traceback
from multiprocessing import Process
try:
from pymongo import MongoReplicaSetClient, MongoClient
from pymongo.errors import (ConnectionFailure, InvalidURI,
DuplicateKeyError, ConfigurationError)
except ImportError:
raise Exception('Python binding for MongoDB has not been installed. '
'Please install "pymongo" first')
from shinken.basemodule import BaseModule
from shinken.log import logger
from shinken.util import to_bool
properties = {
'daemons': ['scheduler'],
'type': 'mongodb-dt-ct-retention-scheduler',
'external': False
}
# called by the plugin manager to get a mongodb_dt_ct_scheduler instance
def get_instance(mod_conf):
logger.info('[Mongodb-Dt-Ct-Retention-Scheduler] Get a Scheduler module %s'
% mod_conf.get_name())
instance = MongodbDtCtRetentionScheduler(mod_conf)
return instance
# Main class
class MongodbDtCtRetentionScheduler(BaseModule):
def __init__(self, mod_conf):
BaseModule.__init__(self, mod_conf)
self._parse_conf(mod_conf)
self.conn = None
self.task = None
def _parse_conf(self, mod_conf):
self.high_availability = to_bool(getattr(mod_conf,
'high_availability', 'false'))
if not self.high_availability:
self.stand_alone = getattr(mod_conf, 'stand_alone', '')
if not self.stand_alone:
logger.error('[Mongodb-Dt-Ct-Retention-Scheduler] Mongodb is '
'configured with high availability be false but '
'stand_alone is not configured')
raise Exception('[Mongodb-Dt-Ct-Retention-Scheduler] '
'Configuration Error')
else:
replica_set_str = getattr(mod_conf, 'replica_set', '')
self._set_replica_set(replica_set_str)
self.database = getattr(mod_conf,
'database', 'shinken_dt_ct_retention_scheduler')
self.username = getattr(mod_conf,
'username', 'shinken_dt_ct_retention_scheduler')
self.password = getattr(mod_conf,
'password', 'shinken_dt_ct_retention_scheduler')
self.url_options = getattr(mod_conf, 'url_options', '')
def _set_replica_set(self, replica_set_str):
raw_members = replica_set_str.split(',')
members = []
for member in raw_members:
members.append(member.strip())
self.replica_set = members
def _set_mongodb_url(self):
scheme = 'mongodb://'
db_and_options = '/%s?%s' % (self.database, self.url_options)
credential = ':'.join((self.username, '%s@' % self.password))
if not self.high_availability:
address = self.stand_alone
mongodb_url = ''.join((scheme, credential, address, db_and_options))
else:
address = ','.join(self.replica_set)
mongodb_url = ''.join((scheme, credential, address, db_and_options))
self.mongodb_url = mongodb_url
# Called by Scheduler to do init work
def init(self):
logger.info('[Mongodb-Dt-Ct-Retention-Scheduler] Initialization of '
'mongodb_retention_scheduler module')
self._set_mongodb_url()
logger.debug('[Mongodb-Dt-Ct-Retention-Scheduler] Mongodb connect url: '
'%s' % self.mongodb_url)
def _init(self):
self._do_stop()
try:
if not self.high_availability:
self.conn = MongoClient(self.mongodb_url)
else:
self.conn = MongoReplicaSetClient(self.mongodb_url)
except ConnectionFailure:
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] Can not make '
'connection with MongoDB')
raise
except (InvalidURI, ConfigurationError):
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] Mongodb '
'connect url error')
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] Mongodb '
'connect url: %s' % self.mongodb_url)
raise
logger.info('[Mongodb-Dt-Ct-Retention-Scheduler] Got a mongodb '
' connection.')
self._get_collections()
def _get_collections(self):
db = self.conn[self.database]
self.services = db['services']
self.downtimes = db['downtimes']
self.comments = db['comments']
def _do_stop(self):
if self.conn:
self.conn.close()
self.conn = None
# invoked by the Scheduler daemon
# We must not do any thing that will last for a long time. It will delay
# other operation in the Scheduler daemon's main event loop.
def hook_save_retention(self, daemon):
retention = daemon.get_retention_data()
if self.task and self.task.is_alive():
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] Previous task has '
'not been accomplished but this should not happen. '
'We should stop it.')
os.kill(self.task.pid, signal.SIGKILL)
self.task = None
# must be args=(retention,) not args=(retention)
self.task = Process(target=self._hook_save_retention, args=(retention,))
self.task.daemon = True
self.task.start()
logger.info('[Mongodb-Dt-Ct-Retention-Scheduler] New update begins.')
def _hook_save_retention(self, retention):
self.set_proctitle(self.name)
try:
self._init()
except Exception:
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] '
'Update ends error.')
return
dts_and_comments = self._get_dt_and_comment(retention)
self._update_dt_and_comment_retention(dts_and_comments)
self._do_stop()
def _get_dt_and_comment(self, retention):
services = retention['services']
dts_and_comments = []
for (host, service) in services:
comments = services[(host, service)].get('comments', [])
comments = self._get_elements(comments)
downtimes = services[(host, service)].get('downtimes', [])
downtimes = self._get_elements(downtimes)
dts_and_comments.append(((host, service), comments, downtimes))
return dts_and_comments
# convert object to dict
def _get_elements(self, elements):
elts = []
for elt in elements:
item = {}
cls = elt.__class__
item['_id'] = '%s-%s-%s-%s' % (elt.ref.host.host_name,
elt.ref.service_description,
elt.id, elt.entry_time)
for prop in cls.properties:
if hasattr(elt, prop):
item[prop] = getattr(elt, prop)
elts.append(item)
return elts
def _update_dt_and_comment_retention(self, dts_and_comments):
logger.info('[Mongodb-Dt-Ct-Retention-Scheduler] '
'Downtime and Comment update starts.')
try:
for elt in dts_and_comments:
service_identity, comments, downtimes = elt
_id = ','.join(service_identity)
cursor = self.services.find({'_id': _id})
if not cursor.count():
service_info = {'_id': _id,
'comment_ids': [],
'downtime_ids': []
}
self.services.insert(service_info)
for comment in comments:
try:
self.comments.insert(comment)
except DuplicateKeyError:
pass
else:
cursor = self.services.find({'_id': _id})
comment_ids = cursor[0].get('comment_ids')
comment_ids.append(comment.get('_id'))
self.services.update({'_id': _id},
{'$set': {'comment_ids': comment_ids}})
for downtime in downtimes:
try:
self.downtimes.insert(downtime)
except DuplicateKeyError:
pass
else:
self.services.find({'_id': _id})
downtime_ids = cursor[0].get('downtime_ids')
downtime_ids.append(downtime.get('_id'))
self.services.update({'_id': _id},
{'$set': {'downtime_ids': downtime_ids}})
logger.info('[Mongodb-Dt-Ct-Retention-Scheduler] '
'Downtime and Comment update ends successfully.')
except Exception:
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] '
'Downtime and Comment update error.')
logger.warn('[Mongodb-Dt-Ct-Retention-Scheduler] '
'%s' % traceback.format_exc())
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