|
| 1 | +import time |
| 2 | +import unittest |
| 3 | +import pytest |
| 4 | +import os |
| 5 | +from cassandra.cluster import Cluster |
| 6 | +from cassandra.policies import ConstantReconnectionPolicy, RoundRobinPolicy, TokenAwarePolicy |
| 7 | + |
| 8 | +from tests.integration import PROTOCOL_VERSION, use_cluster |
| 9 | +from tests.unit.test_host_connection_pool import LOGGER |
| 10 | + |
| 11 | +def setup_module(): |
| 12 | + use_cluster('tablets', [3], start=True, use_tablets=True) |
| 13 | + |
| 14 | +class TestTabletsIntegration(unittest.TestCase): |
| 15 | + @classmethod |
| 16 | + def setup_class(cls): |
| 17 | + cls.cluster = Cluster(contact_points=["127.0.0.1", "127.0.0.2", "127.0.0.3"], protocol_version=PROTOCOL_VERSION, |
| 18 | + load_balancing_policy=TokenAwarePolicy(RoundRobinPolicy()), |
| 19 | + reconnection_policy=ConstantReconnectionPolicy(1)) |
| 20 | + cls.session = cls.cluster.connect() |
| 21 | + |
| 22 | + @classmethod |
| 23 | + def teardown_class(cls): |
| 24 | + cls.cluster.shutdown() |
| 25 | + |
| 26 | + def verify_same_host_in_tracing(self, results): |
| 27 | + traces = results.get_query_trace() |
| 28 | + events = traces.events |
| 29 | + host_set = set() |
| 30 | + for event in events: |
| 31 | + LOGGER.info("%s %s %s", event.source, event.thread_name, event.description) |
| 32 | + host_set.add(event.source) |
| 33 | + |
| 34 | + self.assertEqual(len(host_set), 1) |
| 35 | + self.assertIn('querying locally', "\n".join([event.description for event in events])) |
| 36 | + |
| 37 | + trace_id = results.response_future.get_query_trace_ids()[0] |
| 38 | + traces = self.session.execute("SELECT * FROM system_traces.events WHERE session_id = %s", (trace_id,)) |
| 39 | + events = [event for event in traces] |
| 40 | + host_set = set() |
| 41 | + for event in events: |
| 42 | + LOGGER.info("%s %s", event.source, event.activity) |
| 43 | + host_set.add(event.source) |
| 44 | + |
| 45 | + self.assertEqual(len(host_set), 1) |
| 46 | + self.assertIn('querying locally', "\n".join([event.activity for event in events])) |
| 47 | + |
| 48 | + def verify_same_shard_in_tracing(self, results): |
| 49 | + traces = results.get_query_trace() |
| 50 | + events = traces.events |
| 51 | + shard_set = set() |
| 52 | + for event in events: |
| 53 | + LOGGER.info("%s %s %s", event.source, event.thread_name, event.description) |
| 54 | + shard_set.add(event.thread_name) |
| 55 | + |
| 56 | + self.assertEqual(len(shard_set), 1) |
| 57 | + self.assertIn('querying locally', "\n".join([event.description for event in events])) |
| 58 | + |
| 59 | + trace_id = results.response_future.get_query_trace_ids()[0] |
| 60 | + traces = self.session.execute("SELECT * FROM system_traces.events WHERE session_id = %s", (trace_id,)) |
| 61 | + events = [event for event in traces] |
| 62 | + shard_set = set() |
| 63 | + for event in events: |
| 64 | + LOGGER.info("%s %s", event.thread, event.activity) |
| 65 | + shard_set.add(event.thread) |
| 66 | + |
| 67 | + self.assertEqual(len(shard_set), 1) |
| 68 | + self.assertIn('querying locally', "\n".join([event.activity for event in events])) |
| 69 | + |
| 70 | + def create_ks_and_cf(self): |
| 71 | + self.session.execute( |
| 72 | + """ |
| 73 | + DROP KEYSPACE IF EXISTS test1 |
| 74 | + """ |
| 75 | + ) |
| 76 | + self.session.execute( |
| 77 | + """ |
| 78 | + CREATE KEYSPACE test1 |
| 79 | + WITH replication = { |
| 80 | + 'class': 'NetworkTopologyStrategy', |
| 81 | + 'replication_factor': 1, |
| 82 | + 'initial_tablets': 8 |
| 83 | + } |
| 84 | + """) |
| 85 | + |
| 86 | + self.session.execute( |
| 87 | + """ |
| 88 | + CREATE TABLE test1.table1 (pk int, ck int, v int, PRIMARY KEY (pk, ck)); |
| 89 | + """) |
| 90 | + |
| 91 | + @staticmethod |
| 92 | + def create_data(session): |
| 93 | + prepared = session.prepare( |
| 94 | + """ |
| 95 | + INSERT INTO test1.table1 (pk, ck, v) VALUES (?, ?, ?) |
| 96 | + """) |
| 97 | + |
| 98 | + for i in range(50): |
| 99 | + bound = prepared.bind((i, i%5, i%2)) |
| 100 | + session.execute(bound) |
| 101 | + |
| 102 | + def query_data_shard(self, session, verify_in_tracing=True): |
| 103 | + prepared = session.prepare( |
| 104 | + """ |
| 105 | + SELECT pk, ck, v FROM test1.table1 WHERE pk = ? |
| 106 | + """) |
| 107 | + |
| 108 | + bound = prepared.bind([(2)]) |
| 109 | + results = session.execute(bound, trace=True) |
| 110 | + self.assertEqual(results, [(2, 2, 0)]) |
| 111 | + if verify_in_tracing: |
| 112 | + self.verify_same_shard_in_tracing(results) |
| 113 | + |
| 114 | + def query_data_host(self, session, verify_in_tracing=True): |
| 115 | + prepared = session.prepare( |
| 116 | + """ |
| 117 | + SELECT pk, ck, v FROM test1.table1 WHERE pk = ? |
| 118 | + """) |
| 119 | + |
| 120 | + bound = prepared.bind([(2)]) |
| 121 | + results = session.execute(bound, trace=True) |
| 122 | + self.assertEqual(results, [(2, 2, 0)]) |
| 123 | + if verify_in_tracing: |
| 124 | + self.verify_same_host_in_tracing(results) |
| 125 | + |
| 126 | + def test_tablets(self): |
| 127 | + self.create_ks_and_cf() |
| 128 | + self.create_data(self.session) |
| 129 | + self.query_data_host(self.session) |
| 130 | + |
| 131 | + def test_tablets_shard_awareness(self): |
| 132 | + self.query_data_shard(self.session) |
| 133 | + |
| 134 | + def test_tablets_refresh(self): |
| 135 | + tablets1 = self.cluster.metadata.all_tablets() |
| 136 | + |
| 137 | + LOGGER.info(tablets1) |
| 138 | + |
| 139 | + self.session.execute( |
| 140 | + """ |
| 141 | + CREATE TABLE test1.table2 (pk int, ck int, v int, PRIMARY KEY (pk, ck)); |
| 142 | + """) |
| 143 | + |
| 144 | + time.sleep(90) |
| 145 | + |
| 146 | + tablets2 = self.cluster.metadata.all_tablets() |
| 147 | + LOGGER.info(tablets2) |
| 148 | + |
| 149 | + self.assertTrue(len(tablets1) < len(tablets2)) |
| 150 | + |
| 151 | + |
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