/usr/share/pyshared/carbon/storage.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 | """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."""
import os
import re
import whisper
from os.path import join, exists, sep
from carbon.conf import OrderedConfigParser, settings
from carbon.util import pickle
from carbon import log
from carbon.exceptions import CarbonConfigException
STORAGE_SCHEMAS_CONFIG = join(settings.CONF_DIR, 'storage-schemas.conf')
STORAGE_AGGREGATION_CONFIG = join(settings.CONF_DIR, 'storage-aggregation.conf')
STORAGE_LISTS_DIR = join(settings.CONF_DIR, 'lists')
def getFilesystemPath(metric):
metric_path = metric.replace('.', sep).lstrip(sep) + '.wsp'
return join(settings.LOCAL_DATA_DIR, metric_path)
class Schema:
def test(self, metric):
raise NotImplementedError()
def matches(self, metric):
return bool(self.test(metric))
class DefaultSchema(Schema):
def __init__(self, name, archives):
self.name = name
self.archives = archives
def test(self, metric):
return True
class PatternSchema(Schema):
def __init__(self, name, pattern, archives):
self.name = name
self.pattern = pattern
self.regex = re.compile(pattern)
self.archives = archives
def test(self, metric):
return self.regex.search(metric)
class ListSchema(Schema):
def __init__(self, name, listName, archives):
self.name = name
self.listName = listName
self.archives = archives
self.path = join(settings.WHITELISTS_DIR, listName)
if exists(self.path):
self.mtime = os.stat(self.path).st_mtime
fh = open(self.path, 'rb')
self.members = pickle.load(fh)
fh.close()
else:
self.mtime = 0
self.members = frozenset()
def test(self, metric):
if exists(self.path):
current_mtime = os.stat(self.path).st_mtime
if current_mtime > self.mtime:
self.mtime = current_mtime
fh = open(self.path, 'rb')
self.members = pickle.load(fh)
fh.close()
return metric in self.members
class Archive:
def __init__(self, secondsPerPoint, points):
self.secondsPerPoint = int(secondsPerPoint)
self.points = int(points)
def __str__(self):
return "Archive = (Seconds per point: %d, Datapoints to save: %d)" % (self.secondsPerPoint, self.points)
def getTuple(self):
return (self.secondsPerPoint, self.points)
@staticmethod
def fromString(retentionDef):
(secondsPerPoint, points) = whisper.parseRetentionDef(retentionDef)
return Archive(secondsPerPoint, points)
def loadStorageSchemas():
schemaList = []
config = OrderedConfigParser()
config.read(STORAGE_SCHEMAS_CONFIG)
for section in config.sections():
options = dict(config.items(section))
matchAll = options.get('match-all')
pattern = options.get('pattern')
listName = options.get('list')
retentions = options['retentions'].split(',')
archives = [Archive.fromString(s) for s in retentions]
if matchAll:
mySchema = DefaultSchema(section, archives)
elif pattern:
mySchema = PatternSchema(section, pattern, archives)
elif listName:
mySchema = ListSchema(section, listName, archives)
archiveList = [a.getTuple() for a in archives]
try:
whisper.validateArchiveList(archiveList)
schemaList.append(mySchema)
except whisper.InvalidConfiguration, e:
log.msg("Invalid schemas found in %s: %s" % (section, e))
schemaList.append(defaultSchema)
return schemaList
def loadAggregationSchemas():
# NOTE: This abuses the Schema classes above, and should probably be refactored.
schemaList = []
config = OrderedConfigParser()
try:
config.read(STORAGE_AGGREGATION_CONFIG)
except (IOError, CarbonConfigException):
log.msg("%s not found, ignoring." % STORAGE_AGGREGATION_CONFIG)
for section in config.sections():
options = dict(config.items(section))
matchAll = options.get('match-all')
pattern = options.get('pattern')
listName = options.get('list')
xFilesFactor = options.get('xfilesfactor')
aggregationMethod = options.get('aggregationmethod')
try:
if xFilesFactor is not None:
xFilesFactor = float(xFilesFactor)
assert 0 <= xFilesFactor <= 1
if aggregationMethod is not None:
assert aggregationMethod in whisper.aggregationMethods
except:
log.msg("Invalid schemas found in %s." % section)
continue
archives = (xFilesFactor, aggregationMethod)
if matchAll:
mySchema = DefaultSchema(section, archives)
elif pattern:
mySchema = PatternSchema(section, pattern, archives)
elif listName:
mySchema = ListSchema(section, listName, archives)
schemaList.append(mySchema)
schemaList.append(defaultAggregation)
return schemaList
defaultArchive = Archive(60, 60 * 24 * 7) # default retention for unclassified data (7 days of minutely data)
defaultSchema = DefaultSchema('default', [defaultArchive])
defaultAggregation = DefaultSchema('default', (None, None))
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