mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-30 11:32:03 +00:00
49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
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import os
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import io
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import sys
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import requests
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import time
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import pandas as pd
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CLICKHOUSE_HOST = os.environ.get('CLICKHOUSE_HOST', '127.0.0.1')
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CLICKHOUSE_PORT_HTTP = os.environ.get('CLICKHOUSE_PORT_HTTP', '8123')
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CLICKHOUSE_SERVER_URL_STR = 'http://' + ':'.join(str(s) for s in [CLICKHOUSE_HOST, CLICKHOUSE_PORT_HTTP]) + "/"
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class ClickHouseClient:
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def __init__(self, host = CLICKHOUSE_SERVER_URL_STR):
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self.host = host
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def query(self, query, connection_timeout = 1500):
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NUMBER_OF_TRIES = 30
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DELAY = 10
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for i in range(NUMBER_OF_TRIES):
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r = requests.post(
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self.host,
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params = {'timeout_before_checking_execution_speed': 120, 'max_execution_time': 6000},
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timeout = connection_timeout,
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data = query)
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if r.status_code == 200:
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return r.text
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else:
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print('ATTENTION: try #%d failed' % i)
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if i != (NUMBER_OF_TRIES-1):
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print(query)
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print(r.text)
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time.sleep(DELAY*(i+1))
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else:
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raise ValueError(r.text)
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def query_return_df(self, query, connection_timeout = 1500):
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data = self.query(query, connection_timeout)
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df = pd.read_csv(io.StringIO(data), sep = '\t')
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return df
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def query_with_data(self, query, content):
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content = content.encode('utf-8')
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r = requests.post(self.host, data=content)
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result = r.text
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if r.status_code == 200:
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return result
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else:
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raise ValueError(r.text)
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