stackalytics/dashboard/memory_storage.py
Ilya Shakhat bac9006dc6 Implemented intellectual update of default data
* Refactored record processor
* Refactored persistent storage
* Implemented records updater
* Fixed tests on record processor

Implements blueprint sync-default-data

Change-Id: If8367b77ea540eac296336b9bda6517f4cea9464
2013-08-01 18:58:27 +04:00

133 lines
4.3 KiB
Python

# Copyright (c) 2013 Mirantis Inc.
#
# 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.
MEMORY_STORAGE_CACHED = 0
class MemoryStorage(object):
def __init__(self, records):
pass
class CachedMemoryStorage(MemoryStorage):
def __init__(self, records):
super(CachedMemoryStorage, self).__init__(records)
# common indexes
self.records = {}
self.record_types_index = {}
self.module_index = {}
self.user_id_index = {}
self.company_index = {}
self.release_index = {}
self.indexes = {
'record_type': self.record_types_index,
'company_name': self.company_index,
'module': self.module_index,
'user_id': self.user_id_index,
'release': self.release_index,
}
for record in records:
self._save_record(record)
self.company_name_mapping = dict((c.lower(), c)
for c in self.company_index.keys())
def _save_record(self, record):
self.records[record['record_id']] = record
for key, index in self.indexes.iteritems():
self._add_to_index(index, record, key)
def update(self, records):
for record in records:
record_id = record['record_id']
if record_id in self.records:
# remove existing record from indexes
self._remove_record_from_index(self.records[record_id])
self._save_record(record)
def _remove_record_from_index(self, record):
for key, index in self.indexes.iteritems():
index[record[key]].remove(record['record_id'])
def _add_to_index(self, record_index, record, key):
record_key = record[key]
if record_key in record_index:
record_index[record_key].add(record['record_id'])
else:
record_index[record_key] = set([record['record_id']])
def _get_record_ids_from_index(self, items, index):
record_ids = set()
for item in items:
if item in index:
record_ids |= index[item]
return record_ids
def get_record_ids_by_modules(self, modules):
return self._get_record_ids_from_index(modules, self.module_index)
def get_record_ids_by_companies(self, companies):
return self._get_record_ids_from_index(
map(self.get_original_company_name, companies),
self.company_index)
def get_record_ids_by_user_ids(self, launchpad_ids):
return self._get_record_ids_from_index(launchpad_ids,
self.user_id_index)
def get_record_ids_by_releases(self, releases):
return self._get_record_ids_from_index(releases, self.release_index)
def get_record_ids(self):
return self.records.keys()
def get_commit_ids(self):
return self.record_types_index['commit']
def get_review_ids(self):
return self.record_types_index['review']
def get_mark_ids(self):
return self.record_types_index['mark']
def get_records(self, record_ids):
for i in record_ids:
yield self.records[i]
def get_original_company_name(self, company_name):
normalized = company_name.lower()
if normalized not in self.company_name_mapping:
raise Exception('Unknown company name %s' % company_name)
return self.company_name_mapping[normalized]
def get_companies(self):
return self.company_index.keys()
def get_modules(self):
return self.module_index.keys()
def get_user_ids(self):
return self.user_id_index.keys()
def get_memory_storage(memory_storage_type, records):
if memory_storage_type == MEMORY_STORAGE_CACHED:
return CachedMemoryStorage(records)
else:
raise Exception('Unknown memory storage type %s' % memory_storage_type)