def create_table(source, fields):
'''Creates table in ClickHouse for hits/visits with particular fields'''
tmpl = '''
CREATE TABLE {table_name} (
{fields}
) ENGINE = {engine}
'''
field_tmpl = '{name} {type}'
field_statements = []
table_name = get_source_table_name(source)
if source == 'hits':
if ('ym:pv:date' in fields) and ('ym:pv:clientID' in fields):
engine = 'MergeTree(Date, intHash32(ClientID), (CounterID, Date, intHash32(ClientID)), 8192)'
else:
engine = 'Log'
if source == 'visits':
if ('ym:s:date' in fields) and ('ym:s:clientID' in fields):
engine = 'MergeTree(Date, intHash32(ClientID), (CounterID, Date, intHash32(ClientID)), 8192)'
else:
engine = 'Log'
ch_field_types = utils.get_ch_fields_config()
ch_fields = sorted(map(get_ch_field_name, fields))
for i in range(len(fields)):
field_statements.append(
field_tmpl.format(name=ch_fields[i],
type=ch_field_types[fields[i]]))
query = tmpl.format(table_name=table_name,
engine=engine,
fields=',\n'.join(sorted(field_statements)))
get_clickhouse_data(query)
def create_table(source, fields):
'''Creates table in ClickHouse for hits/visits with particular fields'''
tmpl = '''
CREATE TABLE {table_name} (
{fields}
) ENGINE = {engine}
'''
field_tmpl = '{name} {type}'
field_statements = []
table_name = get_source_table_name(source)
if source == 'hits':
if ('ym:pv:date' in fields) and ('ym:pv:clientID' in fields):
engine = 'MergeTree() PARTITION BY toYYYYMM(Date) ORDER BY (ClientID, Date, intHash64(ClientID)) SAMPLE BY intHash64(ClientID) SETTINGS index_granularity=8192'
else:
engine = 'Log'
if source == 'visits':
if ('ym:s:date' in fields) and ('ym:s:clientID' in fields):
engine = 'MergeTree() PARTITION BY toYYYYMM(Date) ORDER BY (ClientID, Date, intHash64(ClientID)) SAMPLE BY intHash64(ClientID) SETTINGS index_granularity=8192'
else:
engine = 'Log'
ch_field_types = utils.get_ch_fields_config()
ch_fields = list(map(get_ch_field_name, fields))
for i in range(len(fields)):
field_statements.append(field_tmpl.format(name=ch_fields[i],
type=ch_field_types[fields[i]]))
field_statements = sorted(field_statements)
query = tmpl.format(table_name=table_name,
engine=engine,
fields=',\n'.join(sorted(field_statements)))
get_clickhouse_data(query)
def save_data(api_request, part):
'''Loads data chunk from Logs API and saves to ClickHouse'''
url = '{host}/management/v1/counter/{counter_id}/logrequest/{request_id}/part/{part}/download?oauth_token={token}' \
.format(
host=HOST,
counter_id=api_request.user_request.counter_id,
request_id=api_request.request_id,
part=part,
token=api_request.user_request.token
)
r = requests.get(url)
if r.status_code != 200:
logger.debug(r.text)
raise ValueError(r.text)
splitted_text = r.text.split('\n')
logger.info('### DATA SAMPLE')
logger.info('\n'.join(splitted_text[:5]))
headers_num = len(splitted_text[0].split('\t'))
splitted_text_filtered = filter(
lambda x: len(x.split('\t')) == headers_num, r.text.split('\n'))
num_filtered = len(splitted_text) - len(splitted_text_filtered)
if num_filtered != 0:
logger.warning('%d rows were filtered out' % num_filtered)
#Get additional fields for clickHouse
ch_fields_config = utils.get_ch_fields_config()
ch_fields = ch_fields_config['{source}_fields'.format(
source=api_request.user_request.source)]
prefix = 'ym:pv:'
if api_request.user_request.source == 'visits':
prefix = 'ym:s:'
#adds additional fields to the end
if len(ch_fields) > 0:
splitted_text_filtered[0] += '\t' + '\t'.join(ch_fields)
headers = splitted_text[0].split('\t')
if prefix + 'params' in headers and prefix + 'URL' in headers:
params_index = headers.index(prefix + 'params')
url_index = headers.index(prefix + 'URL')
#parse the params
i = 1
while i < len(splitted_text_filtered):
value = splitted_text_filtered[i].split('\t')
for field in ch_fields:
splitted_text_filtered[i] += "\t"
params_json = clear_json(value[params_index])
url = clear_json(value[url_index])
if not is_json(params_json):
continue
params = json.loads(params_json)
if len(params) > 0:
if type(params) is list:
params = params[0]
data = parsing_params.get_data_from_params(
prefix, params, field, url)
splitted_text_filtered[i] += unicode(data)
i += 1
output_data = '\n'.join(splitted_text_filtered).encode('utf-8')
output_data = output_data.replace(r"\'",
"'") # to correct escapes in params
clickhouse.save_data(api_request.user_request.source,
api_request.user_request.fields, output_data)
api_request.status = 'saved'
def get_field_type_list(dimension_list):
field_type_list = []
dimension_to_field_type = utils.get_ch_fields_config()
for dimension in dimension_list:
field_type_list.append(dimension_to_field_type[dimension])
return field_type_list
