qixinbo
51 lines
1.7 KiB
Python
51 lines
1.7 KiB
Python
from clickhouse_driver import Client
|
|
import os
|
|
|
|
class ClickHouseConnector:
|
|
def __init__(self, host: str = None, port: int = 9000, user: str = 'default', password: str = '', database: str = 'default'):
|
|
self.host = host or os.getenv("CLICKHOUSE_HOST", "localhost")
|
|
self.port = port or int(os.getenv("CLICKHOUSE_PORT", 9000))
|
|
self.user = user or os.getenv("CLICKHOUSE_USER", "default")
|
|
self.password = password or os.getenv("CLICKHOUSE_PASSWORD", "")
|
|
self.database = database or os.getenv("CLICKHOUSE_DB", "default")
|
|
|
|
self.client = Client(
|
|
host=self.host,
|
|
port=self.port,
|
|
user=self.user,
|
|
password=self.password,
|
|
database=self.database
|
|
)
|
|
|
|
def execute_query(self, query: str):
|
|
try:
|
|
return self.client.execute(query)
|
|
except Exception as e:
|
|
print(f"ClickHouse Query Error: {e}")
|
|
raise e
|
|
|
|
def get_schema(self):
|
|
query = "SELECT table, name, type FROM system.columns WHERE database = currentDatabase()"
|
|
try:
|
|
results = self.client.execute(query)
|
|
schema = {}
|
|
for row in results:
|
|
table = row[0]
|
|
if table not in schema:
|
|
schema[table] = []
|
|
schema[table].append(f"{row[1]} ({row[2]})")
|
|
return schema
|
|
except Exception as e:
|
|
print(f"Error getting schema: {e}")
|
|
return {}
|
|
|
|
def test_connection(self) -> bool:
|
|
try:
|
|
self.client.execute("SELECT 1")
|
|
return True
|
|
except Exception as e:
|
|
print(f"ClickHouse Connection Error: {e}")
|
|
return False
|
|
|
|
clickhouse_connector = ClickHouseConnector()
|