/usr/lib/python2.7/dist-packages/carbon/service.py is in graphite-carbon 0.9.12-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | """Copyright 2009 Chris Davis
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License."""
from os.path import exists
from twisted.application.service import MultiService
from twisted.application.internet import TCPServer, TCPClient, UDPServer
from twisted.internet.protocol import ServerFactory
from twisted.python.components import Componentized
from twisted.python.log import ILogObserver
# Attaching modules to the global state module simplifies import order hassles
from carbon import util, state, events, instrumentation
from carbon.log import carbonLogObserver
from carbon.exceptions import CarbonConfigException
state.events = events
state.instrumentation = instrumentation
class CarbonRootService(MultiService):
"""Root Service that properly configures twistd logging"""
def setServiceParent(self, parent):
MultiService.setServiceParent(self, parent)
if isinstance(parent, Componentized):
parent.setComponent(ILogObserver, carbonLogObserver)
def createBaseService(config):
from carbon.conf import settings
from carbon.protocols import (MetricLineReceiver, MetricPickleReceiver,
MetricDatagramReceiver)
root_service = CarbonRootService()
root_service.setName(settings.program)
use_amqp = settings.get("ENABLE_AMQP", False)
if use_amqp:
from carbon import amqp_listener
amqp_host = settings.get("AMQP_HOST", "localhost")
amqp_port = settings.get("AMQP_PORT", 5672)
amqp_user = settings.get("AMQP_USER", "guest")
amqp_password = settings.get("AMQP_PASSWORD", "guest")
amqp_verbose = settings.get("AMQP_VERBOSE", False)
amqp_vhost = settings.get("AMQP_VHOST", "/")
amqp_spec = settings.get("AMQP_SPEC", None)
amqp_exchange_name = settings.get("AMQP_EXCHANGE", "graphite")
for interface, port, protocol in ((settings.LINE_RECEIVER_INTERFACE,
settings.LINE_RECEIVER_PORT,
MetricLineReceiver),
(settings.PICKLE_RECEIVER_INTERFACE,
settings.PICKLE_RECEIVER_PORT,
MetricPickleReceiver)):
if port:
factory = ServerFactory()
factory.protocol = protocol
service = TCPServer(int(port), factory, interface=interface)
service.setServiceParent(root_service)
if settings.ENABLE_UDP_LISTENER:
service = UDPServer(int(settings.UDP_RECEIVER_PORT),
MetricDatagramReceiver(),
interface=settings.UDP_RECEIVER_INTERFACE)
service.setServiceParent(root_service)
if use_amqp:
factory = amqp_listener.createAMQPListener(
amqp_user, amqp_password,
vhost=amqp_vhost, spec=amqp_spec,
exchange_name=amqp_exchange_name,
verbose=amqp_verbose)
service = TCPClient(amqp_host, int(amqp_port), factory)
service.setServiceParent(root_service)
if settings.ENABLE_MANHOLE:
from carbon import manhole
factory = manhole.createManholeListener()
service = TCPServer(int(settings.MANHOLE_PORT), factory,
interface=settings.MANHOLE_INTERFACE)
service.setServiceParent(root_service)
if settings.USE_WHITELIST:
from carbon.regexlist import WhiteList, BlackList
WhiteList.read_from(settings["whitelist"])
BlackList.read_from(settings["blacklist"])
# Instantiate an instrumentation service that will record metrics about
# this service.
from carbon.instrumentation import InstrumentationService
service = InstrumentationService()
service.setServiceParent(root_service)
return root_service
def createCacheService(config):
from carbon.cache import MetricCache
from carbon.conf import settings
from carbon.protocols import CacheManagementHandler
# Configure application components
events.metricReceived.addHandler(MetricCache.store)
root_service = createBaseService(config)
factory = ServerFactory()
factory.protocol = CacheManagementHandler
service = TCPServer(int(settings.CACHE_QUERY_PORT), factory,
interface=settings.CACHE_QUERY_INTERFACE)
service.setServiceParent(root_service)
# have to import this *after* settings are defined
from carbon.writer import WriterService
service = WriterService()
service.setServiceParent(root_service)
if settings.USE_FLOW_CONTROL:
events.cacheFull.addHandler(events.pauseReceivingMetrics)
events.cacheSpaceAvailable.addHandler(events.resumeReceivingMetrics)
return root_service
def createAggregatorService(config):
from carbon.aggregator import receiver
from carbon.aggregator.rules import RuleManager
from carbon.routers import ConsistentHashingRouter
from carbon.client import CarbonClientManager
from carbon.rewrite import RewriteRuleManager
from carbon.conf import settings
from carbon import events
root_service = createBaseService(config)
# Configure application components
router = ConsistentHashingRouter()
client_manager = CarbonClientManager(router)
client_manager.setServiceParent(root_service)
events.metricReceived.addHandler(receiver.process)
events.metricGenerated.addHandler(client_manager.sendDatapoint)
RuleManager.read_from(settings["aggregation-rules"])
if exists(settings["rewrite-rules"]):
RewriteRuleManager.read_from(settings["rewrite-rules"])
if not settings.DESTINATIONS:
raise CarbonConfigException("Required setting DESTINATIONS is missing from carbon.conf")
for destination in util.parseDestinations(settings.DESTINATIONS):
client_manager.startClient(destination)
return root_service
def createRelayService(config):
from carbon.routers import RelayRulesRouter, ConsistentHashingRouter, AggregatedConsistentHashingRouter
from carbon.client import CarbonClientManager
from carbon.conf import settings
from carbon import events
root_service = createBaseService(config)
# Configure application components
if settings.RELAY_METHOD == 'rules':
router = RelayRulesRouter(settings["relay-rules"])
elif settings.RELAY_METHOD == 'consistent-hashing':
router = ConsistentHashingRouter(settings.REPLICATION_FACTOR)
elif settings.RELAY_METHOD == 'aggregated-consistent-hashing':
from carbon.aggregator.rules import RuleManager
RuleManager.read_from(settings["aggregation-rules"])
router = AggregatedConsistentHashingRouter(RuleManager, settings.REPLICATION_FACTOR)
client_manager = CarbonClientManager(router)
client_manager.setServiceParent(root_service)
events.metricReceived.addHandler(client_manager.sendDatapoint)
events.metricGenerated.addHandler(client_manager.sendDatapoint)
if not settings.DESTINATIONS:
raise CarbonConfigException("Required setting DESTINATIONS is missing from carbon.conf")
for destination in util.parseDestinations(settings.DESTINATIONS):
client_manager.startClient(destination)
return root_service
|