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fix: update cursor with current when no changes are returned (#26)
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156 changes: 156 additions & 0 deletions
156
src/test/java/org/neo4j/cdc/client/CDCClientWithAggressiveLogPruningIT.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| /* | ||
| * Copyright (c) "Neo4j" | ||
| * Neo4j Sweden AB [https://neo4j.com] | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.neo4j.cdc.client; | ||
|
|
||
| import static org.assertj.core.api.AssertionsForClassTypes.assertThat; | ||
|
|
||
| import java.time.Duration; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.atomic.AtomicBoolean; | ||
| import org.apache.commons.lang3.RandomStringUtils; | ||
| import org.junit.jupiter.api.AfterAll; | ||
| import org.junit.jupiter.api.BeforeAll; | ||
| import org.junit.jupiter.api.BeforeEach; | ||
| import org.junit.jupiter.api.Test; | ||
| import org.neo4j.cdc.client.model.ChangeIdentifier; | ||
| import org.neo4j.cdc.client.selector.EntitySelector; | ||
| import org.neo4j.driver.*; | ||
| import org.neo4j.driver.exceptions.ClientException; | ||
| import org.testcontainers.containers.Neo4jContainer; | ||
| import org.testcontainers.junit.jupiter.Container; | ||
| import org.testcontainers.junit.jupiter.Testcontainers; | ||
| import reactor.test.StepVerifier; | ||
|
|
||
| @Testcontainers | ||
| public class CDCClientWithAggressiveLogPruningIT { | ||
| @Container | ||
| private static final Neo4jContainer<?> neo4j = new Neo4jContainer<>("neo4j:5-enterprise") | ||
| .withEnv("NEO4J_ACCEPT_LICENSE_AGREEMENT", "yes") | ||
| .withNeo4jConfig("db.tx_log.rotation.retention_policy", "3 files") | ||
| .withNeo4jConfig("db.tx_log.rotation.size", String.format("%d", 128 * 1024)) | ||
| .withAdminPassword("passw0rd"); | ||
|
|
||
| private static Driver driver; | ||
|
|
||
| @BeforeAll | ||
| static void setup() { | ||
| driver = GraphDatabase.driver(neo4j.getBoltUrl(), AuthTokens.basic("neo4j", "passw0rd")); | ||
| } | ||
|
|
||
| @AfterAll | ||
| static void cleanup() { | ||
| driver.close(); | ||
| } | ||
|
|
||
| @BeforeEach | ||
| void reset() { | ||
| try (var session = driver.session(SessionConfig.forDatabase("system"))) { | ||
| session.run( | ||
| "CREATE OR REPLACE DATABASE $db OPTIONS {txLogEnrichment: $mode} WAIT", | ||
| Map.of("db", "neo4j", "mode", "FULL")) | ||
| .consume(); | ||
| } | ||
| } | ||
|
|
||
| @Test | ||
| void shouldFailWithInvalidChangeIdentifierAfterLogPruning() { | ||
| var current = current(); | ||
|
|
||
| // make large changes that will cause at least 3 tx log file rotation | ||
| for (var i = 0; i < 1000; i++) { | ||
| try (var session = driver.session(SessionConfig.forDatabase("neo4j"))) { | ||
| session.run( | ||
| "CREATE (n:Test) SET n.id = $id, n.data = $data", | ||
| Map.of("id", i, "data", RandomStringUtils.random(1024, true, true))); | ||
| } | ||
| } | ||
|
|
||
| // checkpoint | ||
| try (var session = driver.session(SessionConfig.forDatabase("neo4j"))) { | ||
| session.run("CALL db.checkpoint()").consume(); | ||
| } | ||
|
|
||
| StepVerifier.create(new CDCClient(driver, () -> SessionConfig.forDatabase("neo4j")).query(current)) | ||
| .expectErrorSatisfies(t -> assertThat(t) | ||
| .isInstanceOf(ClientException.class) | ||
| .hasMessage("Unable to find the transaction entry for the given change identifier")) | ||
| .verify(); | ||
| } | ||
|
|
||
| @Test | ||
| void shouldNotFailWithInvalidChangeIdentifierAfterLogPruningWhenStreaming() | ||
| throws ExecutionException, InterruptedException { | ||
| var executor = Executors.newSingleThreadExecutor(); | ||
| var current = current(); | ||
|
|
||
| var generateChanges = new AtomicBoolean(true); | ||
| var changes = executor.submit(() -> { | ||
| var counter = 0; | ||
|
|
||
| while (generateChanges.get()) { | ||
| // make changes | ||
| for (var j = 0; j < 10; j++) { | ||
| try (var session = driver.session(SessionConfig.forDatabase("neo4j"))) { | ||
| session.run( | ||
| "CREATE (n:Test) SET n.id = $id, n.data = $data", | ||
| Map.of("id", counter * 100 + j, "data", RandomStringUtils.random(1024, true, true)), | ||
| TransactionConfig.builder() | ||
| .withMetadata(Map.of("app", "hr")) | ||
| .build()); | ||
| } | ||
| } | ||
|
|
||
| // checkpoint | ||
| try (var session = driver.session(SessionConfig.forDatabase("neo4j"))) { | ||
| session.run("CALL db.checkpoint()").consume(); | ||
| } | ||
|
|
||
| counter++; | ||
| try { | ||
| Thread.sleep(500); | ||
| } catch (InterruptedException e) { | ||
| Thread.currentThread().interrupt(); | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
| }); | ||
|
|
||
| try { | ||
| StepVerifier.create(new CDCClient( | ||
| driver, | ||
| () -> SessionConfig.forDatabase("neo4j"), | ||
| EntitySelector.builder() | ||
| .withTxMetadata(Map.of("app", "no-match")) | ||
| .build()) | ||
| .stream(current)) | ||
| .expectTimeout(Duration.ofMinutes(1)) | ||
| .verify(); | ||
| } finally { | ||
| generateChanges.set(false); | ||
| changes.get(); | ||
| } | ||
| } | ||
|
|
||
| private ChangeIdentifier current() { | ||
| try (var session = driver.session(SessionConfig.forDatabase("neo4j"))) { | ||
| return new ChangeIdentifier( | ||
| session.run("CALL cdc.current()").single().get(0).asString()); | ||
| } | ||
| } | ||
| } |
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