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42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
import time
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def check_on_cluster(
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nodes,
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expected,
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*,
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what,
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cluster_name="test_auto_cluster",
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msg=None,
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retries=5,
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query_params={},
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):
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"""
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Select data from `system.clusters` on specified nodes and check the result
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"""
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assert 1 <= retries <= 6
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node_results = {}
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for retry in range(1, retries + 1):
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for node in nodes:
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if node_results.get(node.name) == expected:
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# do not retry node after success
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continue
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query_text = (
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f"SELECT {what} FROM system.clusters WHERE cluster = '{cluster_name}'"
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)
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node_results[node.name] = int(node.query(query_text, **query_params))
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if all(actual == expected for actual in node_results.values()):
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break
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print(f"Retry {retry}/{retries} unsuccessful, result: {node_results}")
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if retry != retries:
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time.sleep(2**retry)
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else:
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msg = msg or f"Wrong '{what}' result"
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raise Exception(
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f"{msg}: {node_results}, expected: {expected} (after {retries} retries)"
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)
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