mirror of
https://github.com/ClickHouse/ClickHouse.git
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157 lines
4.3 KiB
Python
157 lines
4.3 KiB
Python
import pytest
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from helpers.cluster import ClickHouseCluster
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import time
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import socket
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import struct
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from kazoo.client import KazooClient
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# from kazoo.protocol.serialization import Connect, read_buffer, write_buffer
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', main_configs=['configs/keeper_config.xml'], stay_alive=True)
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bool_struct = struct.Struct('B')
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int_struct = struct.Struct('!i')
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int_int_struct = struct.Struct('!ii')
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int_int_long_struct = struct.Struct('!iiq')
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int_long_int_long_struct = struct.Struct('!iqiq')
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long_struct = struct.Struct('!q')
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multiheader_struct = struct.Struct('!iBi')
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reply_header_struct = struct.Struct('!iqi')
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stat_struct = struct.Struct('!qqqqiiiqiiq')
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def destroy_zk_client(zk):
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try:
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if zk:
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zk.stop()
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zk.close()
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except:
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pass
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def wait_node(node):
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for _ in range(100):
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zk = None
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try:
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zk = get_fake_zk(node.name, timeout=30.0)
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print("node", node.name, "ready")
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break
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except Exception as ex:
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time.sleep(0.2)
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print("Waiting until", node.name, "will be ready, exception", ex)
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finally:
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destroy_zk_client(zk)
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else:
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raise Exception("Can't wait node", node.name, "to become ready")
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def wait_nodes():
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for n in [node1]:
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wait_node(n)
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def get_fake_zk(nodename, timeout=30.0):
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_fake_zk_instance = KazooClient(hosts=cluster.get_instance_ip(nodename) + ":9181", timeout=timeout)
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_fake_zk_instance.start()
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return _fake_zk_instance
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def get_keeper_socket(node_name):
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hosts = cluster.get_instance_ip(node_name)
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client = socket.socket()
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client.settimeout(10)
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client.connect((hosts, 9181))
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return client
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def close_keeper_socket(cli):
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if cli is not None:
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cli.close()
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def write_buffer(bytes):
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if bytes is None:
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return int_struct.pack(-1)
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else:
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return int_struct.pack(len(bytes)) + bytes
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def read_buffer(bytes, offset):
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length = int_struct.unpack_from(bytes, offset)[0]
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offset += int_struct.size
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if length < 0:
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return None, offset
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else:
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index = offset
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offset += length
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return bytes[index:index + length], offset
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def handshake(node_name=node1.name, session_timeout=1000, session_id=0):
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client = None
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try:
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client = get_keeper_socket(node_name)
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protocol_version = 0
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last_zxid_seen = 0
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session_passwd = b'\x00' * 16
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read_only = 0
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# Handshake serialize and deserialize code is from 'kazoo.protocol.serialization'.
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# serialize handshake
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req = bytearray()
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req.extend(int_long_int_long_struct.pack(protocol_version, last_zxid_seen, session_timeout, session_id))
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req.extend(write_buffer(session_passwd))
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req.extend([1 if read_only else 0])
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# add header
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req = int_struct.pack(45) + req
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print("handshake request - len:", req.hex(), len(req))
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# send request
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client.send(req)
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data = client.recv(1_000)
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# deserialize response
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print("handshake response - len:", data.hex(), len(data))
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# ignore header
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offset = 4
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proto_version, negotiated_timeout, session_id = int_int_long_struct.unpack_from(data, offset)
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offset += int_int_long_struct.size
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password, offset = read_buffer(data, offset)
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try:
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read_only = bool_struct.unpack_from(data, offset)[0] == 1
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offset += bool_struct.size
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except struct.error:
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read_only = False
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print("negotiated_timeout - session_id", negotiated_timeout, session_id)
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return negotiated_timeout, session_id
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finally:
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if client is not None:
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client.close()
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def test_session_timeout(started_cluster):
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wait_nodes()
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negotiated_timeout, _ = handshake(node1.name, session_timeout=1000, session_id=0)
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assert negotiated_timeout == 5000
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negotiated_timeout, _ = handshake(node1.name, session_timeout=8000, session_id=0)
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assert negotiated_timeout == 8000
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negotiated_timeout, _ = handshake(node1.name, session_timeout=20000, session_id=0)
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assert negotiated_timeout == 10000
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