Source code for google.appengine.ext.db.stats

#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#     http://www.apache.org/licenses/LICENSE-2.0
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"""Models to be used when accessing app specific datastore usage statistics.

These entities cannot be created by users, but are populated in the
application's datastore by offline processes run by the Google App Engine team.
"""











import os


if os.environ.get('APPENGINE_RUNTIME') == 'python27':
  try:
    from google.appengine.ext import db
  except ImportError:


    from google.appengine.ext import db
else:
  from google.appengine.ext import db



[docs]class BaseStatistic(db.Model): """Base Statistic Model class. Attributes: bytes: the total number of bytes taken up in the datastore for the statistic instance. count: attribute is the total number of occurrences of the statistic in the datastore. timestamp: the time the statistic instance was written to the datastore. """ STORED_KIND_NAME = '__BaseStatistic__' bytes = db.IntegerProperty() count = db.IntegerProperty() timestamp = db.DateTimeProperty() @classmethod
[docs] def kind(cls): """Kind name override.""" return cls.STORED_KIND_NAME
[docs]class BaseKindStatistic(BaseStatistic): """Base Statistic Model class for stats associated with kinds. Attributes: kind_name: the name of the kind associated with the statistic instance. entity_bytes: the number of bytes taken up to store the statistic in the datastore minus the cost of storing indices. """ STORED_KIND_NAME = '__BaseKindStatistic__' kind_name = db.StringProperty() entity_bytes = db.IntegerProperty(default=0L)
[docs]class GlobalStat(BaseStatistic): """An aggregate of all entities across the entire application. This statistic only has a single instance in the datastore that contains the total number of entities stored and the total number of bytes they take up. Attributes: entity_bytes: the number of bytes taken up to store the statistic in the datastore minus the cost of storing indices. builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. composite_index_bytes: the number of bytes taken up to store composite index entries composite_index_count: the number of composite index entries. """ STORED_KIND_NAME = '__Stat_Total__' entity_bytes = db.IntegerProperty(default=0L) builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L) composite_index_bytes = db.IntegerProperty(default=0L) composite_index_count = db.IntegerProperty(default=0L)
[docs]class NamespaceStat(BaseStatistic): """An aggregate of all entities across an entire namespace. This statistic has one instance per namespace. The key_name is the represented namespace. NamespaceStat entities will only be found in the namespace "" (empty string). It contains the total number of entities stored and the total number of bytes they take up. Attributes: subject_namespace: the namespace associated with the statistic instance. entity_bytes: the number of bytes taken up to store the statistic in the datastore minus the cost of storing indices. builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. composite_index_bytes: the number of bytes taken up to store composite index entries composite_index_count: the number of composite index entries. """ STORED_KIND_NAME = '__Stat_Namespace__' subject_namespace = db.StringProperty() entity_bytes = db.IntegerProperty(default=0L) builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L) composite_index_bytes = db.IntegerProperty(default=0L) composite_index_count = db.IntegerProperty(default=0L)
[docs]class KindStat(BaseKindStatistic): """An aggregate of all entities at the granularity of their Kind. There is an instance of the KindStat for every Kind that is in the application's datastore. This stat contains per-Kind statistics. Attributes: builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. composite_index_bytes: the number of bytes taken up to store composite index entries composite_index_count: the number of composite index entries. """ STORED_KIND_NAME = '__Stat_Kind__' builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L) composite_index_bytes = db.IntegerProperty(default=0L) composite_index_count = db.IntegerProperty(default=0L)
[docs]class KindRootEntityStat(BaseKindStatistic): """Statistics of the number of root entities in the datastore by Kind. There is an instance of the KindRootEntityState for every Kind that is in the application's datastore and has an instance that is a root entity. This stat contains statistics regarding these root entity instances. """ STORED_KIND_NAME = '__Stat_Kind_IsRootEntity__'
[docs]class KindNonRootEntityStat(BaseKindStatistic): """Statistics of the number of non root entities in the datastore by Kind. There is an instance of the KindNonRootEntityStat for every Kind that is in the application's datastore that is a not a root entity. This stat contains statistics regarding thse non root entity instances. """ STORED_KIND_NAME = '__Stat_Kind_NotRootEntity__'
[docs]class PropertyTypeStat(BaseStatistic): """An aggregate of all properties across the entire application by type. There is an instance of the PropertyTypeStat for every property type (google.appengine.api.datastore_types._PROPERTY_TYPES) in use by the application in its datastore. Attributes: property_type: the property type associated with the statistic instance. entity_bytes: the number of bytes taken up to store the statistic in the datastore minus the cost of storing indices. builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. """ STORED_KIND_NAME = '__Stat_PropertyType__' property_type = db.StringProperty() entity_bytes = db.IntegerProperty(default=0L) builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L)
[docs]class KindPropertyTypeStat(BaseKindStatistic): """Statistics on (kind, property_type) tuples in the app's datastore. There is an instance of the KindPropertyTypeStat for every (kind, property_type) tuple in the application's datastore. Attributes: property_type: the property type associated with the statistic instance. builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. """ STORED_KIND_NAME = '__Stat_PropertyType_Kind__' property_type = db.StringProperty() builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L)
[docs]class KindPropertyNameStat(BaseKindStatistic): """Statistics on (kind, property_name) tuples in the app's datastore. There is an instance of the KindPropertyNameStat for every (kind, property_name) tuple in the application's datastore. Attributes: property_name: the name of the property associated with the statistic instance. builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. """ STORED_KIND_NAME = '__Stat_PropertyName_Kind__' property_name = db.StringProperty() builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L)
[docs]class KindPropertyNamePropertyTypeStat(BaseKindStatistic): """Statistic on (kind, property_name, property_type) tuples in the datastore. There is an instance of the KindPropertyNamePropertyTypeStat for every (kind, property_name, property_type) tuple in the application's datastore. Attributes: property_type: the property type associated with the statistic instance. property_name: the name of the property associated with the statistic instance. builtin_index_bytes: the number of bytes taken up to store builtin-in index entries builtin_index_count: the number of built-in index entries. """ STORED_KIND_NAME = '__Stat_PropertyType_PropertyName_Kind__' property_type = db.StringProperty() property_name = db.StringProperty() builtin_index_bytes = db.IntegerProperty(default=0L) builtin_index_count = db.IntegerProperty(default=0L)
[docs]class KindCompositeIndexStat(BaseStatistic): """Statistic on (kind, composite_index_id) tuples in the datastore. There is an instance of the KindCompositeIndexStat for every unique (kind, composite_index_id) tuple in the application's datastore indexes. Attributes: index_id: the id of the composite index associated with the statistic instance. kind_name: the name of the kind associated with the statistic instance. """ STORED_KIND_NAME = '__Stat_Kind_CompositeIndex__' index_id = db.IntegerProperty() kind_name = db.StringProperty()
[docs]class NamespaceGlobalStat(GlobalStat): """GlobalStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_Total__'
[docs]class NamespaceKindStat(KindStat): """KindStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_Kind__'
[docs]class NamespaceKindRootEntityStat(KindRootEntityStat): """KindRootEntityStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_Kind_IsRootEntity__'
[docs]class NamespaceKindNonRootEntityStat(KindNonRootEntityStat): """KindNonRootEntityStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_Kind_NotRootEntity__'
[docs]class NamespacePropertyTypeStat(PropertyTypeStat): """PropertyTypeStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_PropertyType__'
[docs]class NamespaceKindPropertyTypeStat(KindPropertyTypeStat): """KindPropertyTypeStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_PropertyType_Kind__'
[docs]class NamespaceKindPropertyNameStat(KindPropertyNameStat): """KindPropertyNameStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_PropertyName_Kind__'
[docs]class NamespaceKindPropertyNamePropertyTypeStat( KindPropertyNamePropertyTypeStat): """KindPropertyNamePropertyTypeStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_PropertyType_PropertyName_Kind__'
[docs]class NamespaceKindCompositeIndexStat(KindCompositeIndexStat): """KindCompositeIndexStat equivalent for a specific namespace. These may be found in each specific namespace and represent stats for that particular namespace. """ STORED_KIND_NAME = '__Stat_Ns_Kind_CompositeIndex__'
_DATASTORE_STATS_CLASSES_BY_KIND = { GlobalStat.STORED_KIND_NAME: GlobalStat, NamespaceStat.STORED_KIND_NAME: NamespaceStat, KindStat.STORED_KIND_NAME: KindStat, KindRootEntityStat.STORED_KIND_NAME: KindRootEntityStat, KindNonRootEntityStat.STORED_KIND_NAME: KindNonRootEntityStat, PropertyTypeStat.STORED_KIND_NAME: PropertyTypeStat, KindPropertyTypeStat.STORED_KIND_NAME: KindPropertyTypeStat, KindPropertyNameStat.STORED_KIND_NAME: KindPropertyNameStat, KindPropertyNamePropertyTypeStat.STORED_KIND_NAME: KindPropertyNamePropertyTypeStat, KindCompositeIndexStat.STORED_KIND_NAME: KindCompositeIndexStat, NamespaceGlobalStat.STORED_KIND_NAME: NamespaceGlobalStat, NamespaceKindStat.STORED_KIND_NAME: NamespaceKindStat, NamespaceKindRootEntityStat.STORED_KIND_NAME: NamespaceKindRootEntityStat, NamespaceKindNonRootEntityStat.STORED_KIND_NAME: NamespaceKindNonRootEntityStat, NamespacePropertyTypeStat.STORED_KIND_NAME: NamespacePropertyTypeStat, NamespaceKindPropertyTypeStat.STORED_KIND_NAME: NamespaceKindPropertyTypeStat, NamespaceKindPropertyNameStat.STORED_KIND_NAME: NamespaceKindPropertyNameStat, NamespaceKindPropertyNamePropertyTypeStat.STORED_KIND_NAME: NamespaceKindPropertyNamePropertyTypeStat, NamespaceKindCompositeIndexStat.STORED_KIND_NAME: NamespaceKindCompositeIndexStat, }

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