[Test]hikariCP 멀티스레드 환경 테스트

[hykim02]

Summary by CodeRabbit

• New Features

  • Added a new method for simulating database connection hold time in user services.
  • Introduced a test class for concurrency testing of database connections with detailed connection pool monitoring.

• Chores

  • Updated test dependencies to support Lombok annotations in test code.
  • Enhanced test configuration to use HikariCP with custom connection pool settings and improved logging.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The updates introduce a new method to the UserServiceV2 class for simulating database connection holding, along with a corresponding concurrency test class, UserServiceHikariCPTest, that evaluates HikariCP connection pool behavior under load. The test configuration is adjusted to use a persistent H2 database and HikariCP with specific connection pool settings. Additionally, Lombok dependencies are added for test code in the Gradle build configuration. No changes are made to the application's main logic or exported entities beyond the new method and test class.

Changes

File(s)	Change Summary
build.gradle	Added Lombok dependencies for test code: testCompileOnly and testAnnotationProcessor for org.projectlombok:lombok.
src/main/java/com/example/Jinus/service/v2/userInfo/UserServiceV2.java	Added selectCampusIdTest method with @Transactional, simulating a long-running DB operation; removed unused imports and added jakarta.transaction.Transactional import.
src/test/java/com/example/Jinus/service/userInfo/UserServiceHikariCPTest.java	Introduced new test class to perform concurrent invocations of selectCampusIdTest, monitor HikariCP pool status, and log connection pool metrics during execution.
src/test/resources/application-test.properties	Switched datasource to persistent H2 ("testdb"), set datasource type to HikariCP, and added/adjusted HikariCP pool properties (max pool size, timeouts, logging levels, etc.).

Sequence Diagram(s)

sequenceDiagram
    participant TestRunner as UserServiceHikariCPTest
    participant ThreadPool as ExecutorService (10 threads)
    participant UserService as UserServiceV2
    participant HikariCP as Hikari Connection Pool
    participant DB as H2 Database

    TestRunner->>ThreadPool: Submit 10 concurrent tasks
    loop For each thread
        ThreadPool->>UserService: selectCampusIdTest(userId)
        UserService->>HikariCP: Request DB connection (transactional)
        HikariCP->>DB: Open connection
        UserService->>UserService: Sleep 2.5 seconds
        UserService->>DB: findCampusIdById(userId)
        DB-->>UserService: Return campusId
        UserService->>HikariCP: Release connection
        UserService-->>ThreadPool: Log completion
    end
    TestRunner->>HikariCP: Periodically log pool status (active, idle, waiting)

Loading

Poem

In the warren of code where connections hop,
A new test arrives, making threads never stop.
With Hikari pools watched by vigilant eyes,
And Lombok for tests, our code multiplies!
The database stays open, the logs overflow,
As rabbits in code make the connections grow.
🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 05b8cc3 and 17ab978.

📒 Files selected for processing (4)

• build.gradle (1 hunks)
• src/main/java/com/example/Jinus/service/v2/userInfo/UserServiceV2.java (2 hunks)
• src/test/java/com/example/Jinus/service/userInfo/UserServiceHikariCPTest.java (1 hunks)
• src/test/resources/application-test.properties (2 hunks)

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