mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 13:42:02 +00:00
49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
import os
|
|
import io
|
|
import sys
|
|
import requests
|
|
import time
|
|
import pandas as pd
|
|
|
|
CLICKHOUSE_HOST = os.environ.get('CLICKHOUSE_HOST', '127.0.0.1')
|
|
CLICKHOUSE_PORT_HTTP = os.environ.get('CLICKHOUSE_PORT_HTTP', '8123')
|
|
CLICKHOUSE_SERVER_URL_STR = 'http://' + ':'.join(str(s) for s in [CLICKHOUSE_HOST, CLICKHOUSE_PORT_HTTP]) + "/"
|
|
|
|
class ClickHouseClient:
|
|
def __init__(self, host = CLICKHOUSE_SERVER_URL_STR):
|
|
self.host = host
|
|
|
|
def query(self, query, connection_timeout = 1500):
|
|
NUMBER_OF_TRIES = 30
|
|
DELAY = 10
|
|
|
|
for i in range(NUMBER_OF_TRIES):
|
|
r = requests.post(
|
|
self.host,
|
|
params = {'timeout_before_checking_execution_speed': 120, 'max_execution_time': 6000},
|
|
timeout = connection_timeout,
|
|
data = query)
|
|
if r.status_code == 200:
|
|
return r.text
|
|
else:
|
|
print('ATTENTION: try #%d failed' % i)
|
|
if i != (NUMBER_OF_TRIES-1):
|
|
print(query)
|
|
print(r.text)
|
|
time.sleep(DELAY*(i+1))
|
|
else:
|
|
raise ValueError(r.text)
|
|
|
|
def query_return_df(self, query, connection_timeout = 1500):
|
|
data = self.query(query, connection_timeout)
|
|
df = pd.read_csv(io.StringIO(data), sep = '\t')
|
|
return df
|
|
|
|
def query_with_data(self, query, content):
|
|
content = content.encode('utf-8')
|
|
r = requests.post(self.host, data=content)
|
|
result = r.text
|
|
if r.status_code == 200:
|
|
return result
|
|
else:
|
|
raise ValueError(r.text) |