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Development: Improve boundary cases with Hazelcast #9387

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merged 11 commits into from
Oct 20, 2024

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@krusche krusche commented Sep 29, 2024

Checklist

General

Server

  • Important: I implemented the changes with a very good performance and prevented too many (unnecessary) and too complex database calls.
  • I strictly followed the principle of data economy for all database calls.
  • I strictly followed the server coding and design guidelines.
  • I documented the Java code using JavaDoc style.

Motivation and Context

When deploying software and then stopping Artemis, it throws many HazelcastInstanceNotActiveException.

Description

This PR tries to contain the issue by catching the Exception, and only logging a short error message instead of the whole stack trace.

Steps for Testing

  • Deploy in multi node environment, and stop the application. Make sure there is no "HazelcastInstanceNotActiveException: Hazelcast instance is not active!" in the logs any more

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Review Progress

Code Review

  • Code Review 1
  • Code Review 2

Manual Tests

  • Test 1
  • Test 2

Summary by CodeRabbit

  • New Features

    • Improved initialization timing for services, ensuring they start only when the application is fully ready.
    • Enhanced error handling for listener management in Hazelcast services.
  • Bug Fixes

    • Added checks for active Hazelcast instance before listener removal and unsubscription, preventing potential errors.
  • Refactor

    • Updated method signatures to improve lifecycle management and robustness of processing logic, including checks for null queues.

@github-actions github-actions bot added server Pull requests that update Java code. (Added Automatically!) buildagent Pull requests that affect the corresponding module exercise Pull requests that affect the corresponding module programming Pull requests that affect the corresponding module labels Sep 29, 2024
@SimonEntholzer SimonEntholzer marked this pull request as ready for review October 12, 2024 20:34
@SimonEntholzer SimonEntholzer requested a review from a team as a code owner October 12, 2024 20:34
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coderabbitai bot commented Oct 12, 2024

Walkthrough

The changes in this pull request involve modifications to the SharedQueueProcessingService and LocalCIResultProcessingService classes. The main focus is on updating the initialization processes to use @EventListener for ApplicationReadyEvent instead of @PostConstruct, altering the timing of method invocations. Enhancements to error handling and lifecycle management are implemented, particularly regarding the active state of the Hazelcast instance and the robustness of job processing logic.

Changes

File Path Change Summary
src/main/java/de/tum/cit/aet/artemis/buildagent/service/SharedQueueProcessingService.java Changed @PostConstruct to @EventListener(ApplicationReadyEvent.class) for initialization; enhanced removeListener with error handling; modified checkAvailabilityAndProcessNextBuild to check for null queue.
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java Changed @PostConstruct to @EventListener(ApplicationReadyEvent.class) for initialization; enhanced removeListener with exception handling.

Possibly related PRs

Suggested labels

bugfix, core, tests

Suggested reviewers

  • krusche
  • Hialus
  • BBesrour
  • JohannesStoehr
  • ole-ve

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Actionable comments posted: 4

🧹 Outside diff range comments (1)
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (1)

Line range hint 1-300: Overall code quality is good, consider adding class-level JavaDoc.

The changes made to this file are well-implemented and align with the PR objectives. The rest of the file follows coding guidelines and best practices. To further improve documentation:

Consider adding a class-level JavaDoc comment for LocalCIResultProcessingService to provide an overview of its purpose and responsibilities. For example:

/**
 * Service responsible for processing local CI results.
 * This class handles the initialization of result queues, processing of build job results,
 * and management of build agent information.
 */
@Profile(PROFILE_LOCALCI)
@Service
public class LocalCIResultProcessingService {
    // ... existing code ...
}
📜 Review details

Configuration used: .coderabbit.yaml
Review profile: ASSERTIVE

📥 Commits

Files that changed from the base of the PR and between d801ef8 and cf07e1c.

📒 Files selected for processing (3)
  • src/main/java/de/tum/cit/aet/artemis/buildagent/service/SharedQueueProcessingService.java (6 hunks)
  • src/main/java/de/tum/cit/aet/artemis/exercise/web/ParticipationTeamWebsocketService.java (4 hunks)
  • src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (3 hunks)
🧰 Additional context used
📓 Path-based instructions (3)
src/main/java/de/tum/cit/aet/artemis/buildagent/service/SharedQueueProcessingService.java (1)

Pattern src/main/java/**/*.java: naming:CamelCase; principles:{single_responsibility,small_methods,no_duplication}; db:{perf_queries,datetime_not_timestamp}; rest:{stateless,singleton,delegate_logic,http_only,minimal_dtos}; dtos:{java_records,no_entities,min_data,single_resp}; di:constructor_injection; kiss:simple_code; file_handling:os_indep_paths; practices:{least_access,avoid_transactions,code_reuse,static_member_ref,prefer_primitives}; sql:{param_annotation,uppercase,avoid_subqueries};java:avoid_star_imports

src/main/java/de/tum/cit/aet/artemis/exercise/web/ParticipationTeamWebsocketService.java (1)

Pattern src/main/java/**/*.java: naming:CamelCase; principles:{single_responsibility,small_methods,no_duplication}; db:{perf_queries,datetime_not_timestamp}; rest:{stateless,singleton,delegate_logic,http_only,minimal_dtos}; dtos:{java_records,no_entities,min_data,single_resp}; di:constructor_injection; kiss:simple_code; file_handling:os_indep_paths; practices:{least_access,avoid_transactions,code_reuse,static_member_ref,prefer_primitives}; sql:{param_annotation,uppercase,avoid_subqueries};java:avoid_star_imports

src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (1)

Pattern src/main/java/**/*.java: naming:CamelCase; principles:{single_responsibility,small_methods,no_duplication}; db:{perf_queries,datetime_not_timestamp}; rest:{stateless,singleton,delegate_logic,http_only,minimal_dtos}; dtos:{java_records,no_entities,min_data,single_resp}; di:constructor_injection; kiss:simple_code; file_handling:os_indep_paths; practices:{least_access,avoid_transactions,code_reuse,static_member_ref,prefer_primitives}; sql:{param_annotation,uppercase,avoid_subqueries};java:avoid_star_imports

🔇 Additional comments (9)
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (2)

15-17: LGTM: Import statements are correctly updated.

The new imports for ApplicationReadyEvent, EventListener, and HazelcastInstanceNotActiveException are appropriate for the changes made in the class.

Also applies to: 24-24


Line range hint 95-100: Improved initialization timing with ApplicationReadyEvent.

The change from @PostConstruct to @EventListener(ApplicationReadyEvent.class) is a good improvement. This ensures that the initialization of the result queue and build agent information map occurs after the application is fully ready, which can help prevent potential issues with Hazelcast not being fully initialized.

src/main/java/de/tum/cit/aet/artemis/exercise/web/ParticipationTeamWebsocketService.java (4)

16-16: Add ApplicationReadyEvent Import

The import of ApplicationReadyEvent is necessary for the @EventListener annotation used in the init() method. This ensures that the initialization occurs after the application is fully ready.


33-33: Import HazelcastInstanceNotActiveException

Importing HazelcastInstanceNotActiveException is required for handling exceptions when the Hazelcast instance is no longer active, enhancing error handling in the unsubscribe method.


99-99: Replace @PostConstruct with @eventlistener(ApplicationReadyEvent.class)

Changing from @PostConstruct to @EventListener(ApplicationReadyEvent.class) in the init() method ensures that Hazelcast maps are initialized after the application context is fully ready. This prevents potential HazelcastInstanceNotActiveException during startup.


310-322: Verify Thread Safety of Hazelcast Map Operations

While Hazelcast maps are thread-safe, it's important to ensure that concurrent access to destinationTracker does not lead to unexpected behavior. Verify that there are no race conditions when multiple threads modify or access the map concurrently.

Run the following script to check for concurrent access patterns:

✅ Verification successful

Thread Safety of Hazelcast Map Operations Verified

The usage of destinationTracker is thread-safe. All access and modifications to the Hazelcast IMap are handled securely, preventing race conditions during concurrent operations.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search for concurrent access to destinationTracker in the codebase.

# Expectation: Investigate all usages of destinationTracker.

rg --type java 'destinationTracker' -A 5 -B 5

Length of output: 9391

src/main/java/de/tum/cit/aet/artemis/buildagent/service/SharedQueueProcessingService.java (3)

Line range hint 99-105: Confirm the Change from @PostConstruct to @EventListener

Changing the init() method annotation from @PostConstruct to @EventListener(ApplicationReadyEvent.class) delays the initialization until the application is fully started. Ensure that this change doesn't introduce unintended side effects, especially if any components depend on the initialization happening earlier.


146-148: Verify the Impact of Added Initial Delay

The @Scheduled annotation now includes initialDelay = 5000, causing the checkForBuildJobs() method to start after a 5-second delay upon application startup. Ensure that this delay does not adversely affect the processing of build jobs that might be queued immediately after startup.


156-158: Good Addition of Null Check for queue

Adding the queue == null check in checkAvailabilityAndProcessNextBuild() enhances the method's robustness by preventing potential NullPointerException errors if the queue is not yet initialized.

…/improve-boundary-hazelcast

# Conflicts:
#	src/main/java/de/tum/cit/aet/artemis/buildagent/service/SharedQueueProcessingService.java
coderabbitai[bot]
coderabbitai bot previously approved these changes Oct 19, 2024
BBesrour
BBesrour previously approved these changes Oct 19, 2024
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Code lgtm, also tested on TS1

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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (1)
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (1)

102-116: Improved error handling in removeListener method.

The addition of a check for the Hazelcast instance's active state and the exception handling for HazelcastInstanceNotActiveException are excellent improvements. These changes enhance the robustness of the listener removal process and align with the PR objective of improving boundary cases with Hazelcast.

Consider using a more specific log message:

-            log.error("Could not remove listener as hazelcast instance is not active.");
+            log.error("Could not remove listener (ID: {}) as Hazelcast instance is not active.", this.listenerId);

This change provides more context in the log message, which can be helpful for debugging.

📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 4e5adf1 and d2602f9.

📒 Files selected for processing (1)
  • src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (2 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (1)

Pattern src/main/java/**/*.java: naming:CamelCase; principles:{single_responsibility,small_methods,no_duplication}; db:{perf_queries,datetime_not_timestamp}; rest:{stateless,singleton,delegate_logic,http_only,minimal_dtos}; dtos:{java_records,no_entities,min_data,single_resp}; di:constructor_injection; kiss:simple_code; file_handling:os_indep_paths; practices:{least_access,avoid_transactions,code_reuse,static_member_ref,prefer_primitives}; sql:{param_annotation,uppercase,avoid_subqueries};java:avoid_star_imports

🪛 ast-grep
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java

[warning] 98-98: Detected a cookie where the HttpOnly flag is either missing or disabled. The HttpOnly cookie flag instructs the browser to forbid client-side JavaScript to read the cookie. If JavaScript interaction is required, you can ignore this finding. However, set the HttpOnly flag to true` in all other cases.
Context: (new ResultQueueListener(), true)
Note: [CWE-1004]: Sensitive Cookie Without 'HttpOnly' Flag [OWASP A05:2021]: Security Misconfiguration [REFERENCES]
- https://owasp.org/Top10/A05_2021-Security_Misconfiguration


[warning] 98-98: Detected a cookie where the Secure flag is either missing or disabled. The Secure cookie flag instructs the browser to forbid sending the cookie over an insecure HTTP request. Set the Secure flag to true so the cookie will only be sent over HTTPS.
Context: (new ResultQueueListener(), true)
Note: [CWE-614]: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute [OWASP A05:2021]: Security Misconfiguration [REFERENCES]
- https://owasp.org/Top10/A05_2021-Security_Misconfiguration

🔇 Additional comments (3)
src/main/java/de/tum/cit/aet/artemis/programming/service/localci/LocalCIResultProcessingService.java (3)

15-17: LGTM: Import statements updated appropriately.

The new imports for ApplicationReadyEvent, EventListener, and HazelcastInstanceNotActiveException are correctly added and align with the changes made in the class to improve Hazelcast boundary cases.

Also applies to: 24-24


95-98: Improved initialization timing with ApplicationReadyEvent.

The change from @PostConstruct to @EventListener(ApplicationReadyEvent.class) is a good improvement. This ensures that the initialization occurs when the application is fully ready, which can prevent potential issues with Hazelcast not being fully initialized during the construction phase.

🧰 Tools
🪛 ast-grep

[warning] 98-98: Detected a cookie where the HttpOnly flag is either missing or disabled. The HttpOnly cookie flag instructs the browser to forbid client-side JavaScript to read the cookie. If JavaScript interaction is required, you can ignore this finding. However, set the HttpOnly flag to true` in all other cases.
Context: (new ResultQueueListener(), true)
Note: [CWE-1004]: Sensitive Cookie Without 'HttpOnly' Flag [OWASP A05:2021]: Security Misconfiguration [REFERENCES]
- https://owasp.org/Top10/A05_2021-Security_Misconfiguration


[warning] 98-98: Detected a cookie where the Secure flag is either missing or disabled. The Secure cookie flag instructs the browser to forbid sending the cookie over an insecure HTTP request. Set the Secure flag to true so the cookie will only be sent over HTTPS.
Context: (new ResultQueueListener(), true)
Note: [CWE-614]: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute [OWASP A05:2021]: Security Misconfiguration [REFERENCES]
- https://owasp.org/Top10/A05_2021-Security_Misconfiguration


Line range hint 1-300: Overall improvements align well with PR objectives.

The changes made to the LocalCIResultProcessingService class, particularly in the initialization and shutdown processes, effectively address the PR objective of improving boundary cases with Hazelcast. The use of ApplicationReadyEvent for initialization and the enhanced error handling in the removeListener method contribute to a more robust and reliable service.

The rest of the class maintains good adherence to coding guidelines, including:

  • Single responsibility principle
  • Small, focused methods
  • Consistent error handling and logging

These improvements will help mitigate issues related to HazelcastInstanceNotActiveException during application deployment and shutdown.

🧰 Tools
🪛 ast-grep

[warning] 98-98: Detected a cookie where the HttpOnly flag is either missing or disabled. The HttpOnly cookie flag instructs the browser to forbid client-side JavaScript to read the cookie. If JavaScript interaction is required, you can ignore this finding. However, set the HttpOnly flag to true` in all other cases.
Context: (new ResultQueueListener(), true)
Note: [CWE-1004]: Sensitive Cookie Without 'HttpOnly' Flag [OWASP A05:2021]: Security Misconfiguration [REFERENCES]
- https://owasp.org/Top10/A05_2021-Security_Misconfiguration


[warning] 98-98: Detected a cookie where the Secure flag is either missing or disabled. The Secure cookie flag instructs the browser to forbid sending the cookie over an insecure HTTP request. Set the Secure flag to true so the cookie will only be sent over HTTPS.
Context: (new ResultQueueListener(), true)
Note: [CWE-614]: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute [OWASP A05:2021]: Security Misconfiguration [REFERENCES]
- https://owasp.org/Top10/A05_2021-Security_Misconfiguration

@krusche krusche added this to the 7.6.1 milestone Oct 20, 2024
@krusche krusche merged commit f3a48ad into develop Oct 20, 2024
17 of 18 checks passed
@krusche krusche deleted the chore/improve-boundary-hazelcast branch October 20, 2024 09:41
SimonEntholzer pushed a commit that referenced this pull request Oct 21, 2024
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