def test_pop_db(self):
"Test pop_db functions"
print ""
pop_db = PopDBService(config=self.config)
api = 'DSStatInTimeWindow/'
params = {'tstart':'2015-04-18', 'tstop':'2015-04-18', 'sitename':'T2_US_Nebraska'}
expected = 'T2_US_Nebraska'
json_data = pop_db.fetch(api=api, params=params, cache=False)
result = json_data['SITENAME']
self.assertEqual(result, expected)
def test_pop_db_memory(self):
"Test pop_db data memory usage"
print ""
pop_db = PopDBService(self.config)
api = 'getDSdata'
sitename = 'summary'
aggr = 'day'
n = 200000
orderby = 'totcpu'
tstart = datetime_to_string(datetime_day(datetime.datetime.utcnow() - datetime.timedelta(days=10)))
tstop = datetime_to_string(datetime_day(datetime.datetime.utcnow()))
params = {'sitename':sitename, 'tstart':tstart, 'tstop':tstop, 'aggr':aggr, 'n':n, 'orderby':orderby}
pop_db_data = pop_db.fetch(api=api, params=params, cache=False)
total_size = total_size_of(pop_db_data)
logger.info('Total size of Pop DB data in memory is %d bytes (%dMB)', total_size, total_size/10**6)
class PopularityManager(object):
"""
Generate popularity metrics for datasets and sites
"""
def __init__(self, config=dict()):
self.logger = logging.getLogger(__name__)
self.config = config
self.pop_db = PopDBService(self.config)
self.sites = SiteManager(self.config)
self.datasets = DatasetManager(self.config)
self.storage = StorageManager(self.config)
self.MAX_THREADS = int(config['threading']['max_threads'])
def initiate_db(self):
"""
Collect popularity data
"""
q = Queue.Queue()
for i in range(self.MAX_THREADS):
worker = threading.Thread(target=self.insert_popularity_data, args=(i, q))
worker.daemon = True
worker.start()
start_date = datetime_day(datetime.datetime.utcnow() - datetime.timedelta(days=90))
end_date = datetime_day(datetime.datetime.utcnow())
# fetch popularity data
t1 = datetime.datetime.utcnow()
for date in daterange(start_date, end_date):
q.put(date)
q.join()
t2 = datetime.datetime.utcnow()
td = t2 - t1
self.logger.info('Inserting Pop DB data took %s', str(td))
def insert_popularity_data(self, i, q):
"""
Insert popularity data for one dataset into db
"""
coll = 'dataset_popularity'
while True:
date = q.get()
api = 'DSStatInTimeWindow/'
tstart = datetime_to_string(date)
tstop = tstart
params = {'sitename':'summary', 'tstart':tstart, 'tstop':tstop}
json_data = self.pop_db.fetch(api=api, params=params)
# sort it in dictionary for easy fetching
for dataset in json_data['DATA']:
dataset_name = dataset['COLLNAME']
popularity_data = {'name':dataset_name, 'date':date}
popularity_data['n_accesses'] = dataset['NACC']
popularity_data['n_cpus'] = dataset['TOTCPU']
popularity_data['n_users'] = dataset['NUSERS']
query = {'name':dataset_name, 'data':date}
data = {'$set':popularity_data}
self.storage.update_data(coll=coll, query=query, data=data, upsert=True)
q.task_done()
def update_db(self):
"""
Fetch latest popularity data not in database
"""
# get dates
coll = 'dataset_popularity'
pipeline = list()
sort = {'$sort':{'date':-1}}
pipeline.append(sort)
limit = {'$limit':1}
pipeline.append(limit)
project = {'$project':{'date':1, '_id':0}}
pipeline.append(project)
data = self.storage.get_data(coll=coll, pipeline=pipeline)
try:
start_date = data[0]['date']
except:
self.logger.warning('Popularity needs to be initiated')
self.initiate_db()
return
q = Queue.Queue()
for i in range(self.MAX_THREADS):
worker = threading.Thread(target=self.insert_popularity_data, args=(i, q))
worker.daemon = True
worker.start()
end_date = datetime_day(datetime.datetime.utcnow())
# fetch popularity data
t1 = datetime.datetime.utcnow()
for date in daterange(start_date, end_date):
q.put(date)
t2 = datetime.datetime.utcnow()
td = t2 - t1
self.logger.info('Updating Pop DB data took %s', str(td))
def insert_dataset(self, dataset_name):
"""
Fetch all popularity data for dataset
"""
api = 'getSingleDSstat'
sitename = 'summary'
name = dataset_name
aggr = 'day'
orderbys = ['totcpu', 'naccess']
coll = 'dataset_popularity'
for orderby in orderbys:
params = {'sitename':sitename, 'name':name, 'aggr':aggr, 'orderby':orderby}
json_data = self.pop_db.fetch(api=api, params=params)
data = get_json(json_data, 'data')
for pop_data in get_json(data, 'data'):
date = pop_db_timestamp_to_datetime(pop_data[0])
query = {'name':dataset_name, 'data':date}
popularity_data = {'name':dataset_name, 'date':date}
popularity_data[orderby] = pop_data[1]
data = {'$set':popularity_data}
self.storage.update_data(coll=coll, query=query, data=data, upsert=True)