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Testing ZooKeeper Integration Infrastructure in Canal

This test suite provides a foundation for ZooKeeper-based integration tests in the Canal client, establishing core configuration and utility methods for distributed system testing.

Test Coverage Overview

The test suite focuses on ZooKeeper connection management and cluster configuration validation.

Tests single-node and multi-node cluster configurations
Validates destination naming and addressing
Handles cluster node connection strings
Provides controlled test timing through sleep utilities

Implementation Analysis

Implements an abstract base class pattern for ZooKeeper integration testing, providing shared infrastructure for derived test cases.

Uses JUnit framework with custom sleep handling for timing-sensitive distributed tests. Configuration parameters are exposed as protected fields for flexibility in derived tests.

Technical Details

JUnit test framework integration
ZooKeeper cluster configuration parameters
Thread sleep utility with exception handling
Protected field access for test configuration
Configurable destination and cluster endpoints

Best Practices Demonstrated

Exhibits strong testing architecture practices through abstraction and reusability.

Clean separation of concerns in test infrastructure
Robust exception handling for timing operations
Flexible configuration through protected fields
Standardized cluster connection string formatting

alibaba/canal

client/src/test/java/com/alibaba/otter/canal/client/running/AbstractZkTest.java

            
package com.alibaba.otter.canal.client.running;

import org.junit.Assert;

public class AbstractZkTest {

    protected String destination = "ljhtest1";
    protected String cluster1    = "127.0.0.1:2188";
    protected String cluster2    = "127.0.0.1:2188,127.0.0.1:2188";

    public void sleep(long time) {
        try {
            Thread.sleep(time);
        } catch (InterruptedException e) {
            Assert.fail(e.getMessage());
        }
    }
}