def init_app(self, app):
self.config = app.config
enabled = self.config.setdefault("GRAPHITE_ENABLED", False)
self.app = app
if not enabled:
return
from greplin import scales
from greplin.scales.graphite import GraphitePeriodicPusher
from greplin.scales.meter import MeterStat
host = self.config.setdefault("GRAPHITE_HOST", "localhost")
port = self.config.setdefault("GRAPHITE_PORT", 2003)
prefix = self.config.setdefault("GRAPHITE_PREFIX", "doorman")
period = self.config.setdefault("GRAPHITE_REPORTING_INTERVAL", 60)
app.metrics = {}
for rule in app.url_map.iter_rules():
app.metrics[rule.endpoint] = scales.collection(
rule.endpoint,
MeterStat('count'),
scales.PmfStat('latency'),
)
app.graphite = GraphitePeriodicPusher(
host, port, period=period, prefix=prefix,
)
for rule in self.config.setdefault("GRAPHITE_ALLOW", ['*']):
app.graphite.allow(rule)
app.graphite.start()
return
def init(config={}):
"""Set up the GraphitePusher instance from a config dict.
:param config: A dict in the form::
config = {
"metrics.enabled": "yes" | "no",
"metrics.host": 'localhost',
"metrics.port": 2003,
"metrics.prefix": 'pp',
# seconds:
"metrics.period": 60,
# no restrictions on the prefix all will be logged:
"metrics.allow": '*',
}
If metrics.enabled = "no" then the GraphitePeriodicPusher
won't be created and started.
"""
log = logging.getLogger("{}.init".format(__name__))
enabled = (config.get("metrics.enabled", "no")).lower().strip()
if enabled != "yes":
log.warn("Metrics are disabled (metrics.enabled = 'no').")
return
d = dict(
host=config.get("metrics.host", 'localhost'),
port=int(config.get("metrics.port", 2003)),
prefix=config.get("metrics.prefix", 'api.audience'),
period=float(config.get("metrics.period", 60)),
allow=config.get("metrics.allow", '*'),
)
log.info((
"GraphitePeriodicPusher configuration = "
"host:{host} port:{port} prefix:'{prefix}' period:{period}"
).format(**d))
g = GraphitePeriodicPusher(d['host'], d['port'], d['prefix'], d['period'])
g.allow(d['allow'])
g.start()
_graphitepusher.append(g)
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
ch = logging.StreamHandler()
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
ch.setFormatter(formatter)
logger.addHandler(ch)
# Initialize app
# --------------
app = Flask(__name__)
# Initialize metrics backend
# --------------------------
if config.debug or not config.graphite.enable:
import greplin.scales.flaskhandler as statserver
statserver.registerStatsHandler(app, __name__, prefix='/status/')
else:
from greplin.scales.graphite import GraphitePeriodicPusher
graphitePeriodicPusher = GraphitePeriodicPusher(config.graphite.host, config.graphite.port, None, period=10)
graphitePeriodicPusher.allow("*")
graphitePeriodicPusher.start()
if config.debug:
app.config["DEBUG"] = config.debug
HomeView.register(app)
MediasView.register(app)
UsersView.register(app)
ProfileView.register(app)