feat: [#493] optimize session

[kkumar-gcc]

📑 Description

RelatedTo goravel/goravel#493

Summary by CodeRabbit

• New Features

  • Enhanced session management with improved error handling and validation.
  • Introduced a new method to set the session driver externally.

• Bug Fixes

  • Improved error reporting for unset session drivers.
  • Added error handling in session creation to prevent unhandled exceptions.

• Tests

  • Expanded test cases to ensure proper handling of session driver errors and session integrity.

• Documentation

  • Added descriptive error messages for better clarity in session management.

✅ Checks

• Added test cases for my code

[coderabbitai]

Walkthrough

The changes involve significant updates to session management functionality across multiple files. Key modifications include the introduction of error handling for session driver validation, enhancements to session creation and release processes, and the addition of new methods for setting and validating session drivers. The codebase has been refactored to improve encapsulation, streamline session lifecycle management, and enhance error reporting capabilities.

Changes

File	Change Summary
contracts/session/manager.go	Updated NewManager to use NewSession, removed AcquireSession, integrated its functionality into acquireSession, modified BuildSession for error handling, and improved ReleaseSession logic.
contracts/session/session.go	Added validateDriver for driver validation, modified Save and migrate methods to include driver checks, and introduced SetDriver method. Removed obsolete methods.
session/errors.go	Introduced ErrDriverNotSet to handle cases where the session driver is not set.
session/manager_test.go	Added tests for error handling in TestExtend and TestBuildSession, verifying behavior with nil drivers and session integrity.
session/middleware/start_session.go	Enhanced StartSession to include error handling for session creation.
session/session_test.go	Added tests for TestMigrate and TestSave to check behavior when the session driver is nil.

Possibly related PRs

• feat: some optimize #622: The changes in session/manager.go in this PR involve significant modifications to the Manager struct and its methods, which directly relate to the changes made in the main PR regarding session management functionality, including updates to the NewManager and BuildSession methods.

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Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 2d7e766 and 3eb9e86.

Files ignored due to path filters (2)

• mocks/session/Manager.go is excluded by !mocks/**
• mocks/session/Session.go is excluded by !mocks/**

Files selected for processing (8)

• contracts/session/manager.go (1 hunks)
• contracts/session/session.go (1 hunks)
• session/errors.go (1 hunks)
• session/manager.go (2 hunks)
• session/manager_test.go (2 hunks)
• session/middleware/start_session.go (1 hunks)
• session/session.go (5 hunks)
• session/session_test.go (2 hunks)

Additional comments not posted (23)

session/errors.go (1)

1-7: LGTM!

The introduction of the ErrDriverNotSet error variable in the session package is a good addition. It enhances the error reporting capabilities by providing a clear and descriptive error message for the specific case of an unset session driver.

The code follows Go best practices:

• The package declaration is correct.
• The import statement is valid and necessary.
• The variable is declared with a descriptive name and an appropriate error message.
• Exporting the variable allows it to be used by other packages for error handling.

contracts/session/manager.go (1)

5-5: Excellent improvement to error handling!

The change to the BuildSession method signature to return (Session, error) instead of just Session is a significant improvement. It allows the method to signal potential errors during session construction, which aligns with the Go best practice of using multiple return values for functions that can fail.

This change enhances the robustness and reliability of the code by ensuring that the caller can handle potential failure scenarios. Great work!

session/middleware/start_session.go (1)

29-35: LGTM!

The error handling for session building is implemented correctly. Logging the error and proceeding to the next middleware ensures that the request is not blocked if session creation fails. This improves the robustness and control flow of the session management.

contracts/session/session.go (1)

45-46: LGTM!

The addition of the SetDriver(driver Driver) Session method to the Session interface is a great enhancement. It improves the modularity and adaptability of the session handling by allowing the session to set its driver. This change enables greater flexibility in managing session drivers and supports different session management strategies or implementations.

The method signature follows the Go naming conventions and takes a Driver as a parameter while returning a Session. The change is also backward compatible as it only adds a new method to the interface without modifying existing ones.

Overall, this is a valuable addition to the Session interface.

session/manager.go (6)

28-28: LGTM!

Using the NewSession constructor enhances encapsulation and potentially improves session creation logic. This change aligns with the AI-generated summary.

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36-51: LGTM!

The changes in the BuildSession method improve error handling, simplify session retrieval, and enhance readability through method chaining. These modifications align with the AI-generated summary and contribute to a more robust and maintainable codebase.

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83-88: LGTM!

The changes in the ReleaseSession method enhance readability through method chaining and ensure that the session is properly reset before returning it to the pool. These modifications align with the AI-generated summary and contribute to a cleaner and more maintainable session management process.

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90-92: LGTM!

Introducing the acquireSession method improves encapsulation and simplifies the session retrieval process. This change aligns with the AI-generated summary and contributes to a more modular and maintainable codebase.

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38-38: LGTM!

Returning an error instead of causing a panic when the session driver is not set improves error handling and aligns with the AI-generated summary. This change contributes to a more robust and maintainable codebase.

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40-40: LGTM!

Adding an empty line after the error handling block improves code readability and separation of concerns. This minor formatting change contributes to a more maintainable codebase.

session/manager_test.go (2)

88-91: LGTM!

The test case correctly verifies that attempting to extend a driver that already exists results in an appropriate error. The error message includes the driver name for clarity.

---

101-116: LGTM!

The changes to the TestBuildSession function improve the test coverage by:

1. Verifying that the session can store and retrieve values correctly.
2. Ensuring that releasing the session clears the session's name and all stored values.
3. Handling the case when attempting to build a session with a nil driver and returning an appropriate error.

These additions enhance the robustness of the session manager tests.

session/session.go (9)

11-13: LGTM!

The new imports are valid and likely used in the new or modified code segments.

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159-162: LGTM!

Validating the session driver before writing session data is a good practice. It improves error handling and prevents potential issues with invalid session drivers.

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172-175: LGTM!

The new SetDriver method improves the flexibility of the Session struct by allowing the driver to be set externally. Returning the Session struct allows method chaining, which is a nice touch.

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223-228: LGTM!

The new validateDriver method is a good addition. It improves error handling and prevents potential issues with unset session drivers by returning an error if the driver is nil.

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237-240: LGTM!

Validating the session driver before destroying the session is a good practice. It improves error handling and prevents potential issues with invalid session drivers.

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241-241: LGTM!

The refactoring removes an unnecessary variable assignment while keeping the error handling intact.

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252-255: LGTM!

Validating the session driver at the beginning of the readFromHandler method is a good practice. It improves error handling and user experience by providing clear feedback in case of issues with the session driver.

---

259-259: LGTM!

Printing the error in red improves user experience by providing clear feedback in case of issues while reading session data.

---

264-264: LGTM!

Printing the error in red improves user experience by providing clear feedback in case of issues while unmarshalling session data.

session/session_test.go (2)

165-168: LGTM!

The added test case for the migrate method when the driver is not set is a valuable addition. It ensures that the method correctly handles the scenario and returns the expected ErrDriverNotSet error. This prevents potential runtime issues and improves the robustness of the session management.

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304-307: LGTM!

The added test case for the Save method when the driver is not set is a valuable addition. It ensures that the method correctly handles the scenario and returns the expected ErrDriverNotSet error. This prevents potential runtime issues and improves the robustness of the session management when saving session data.

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[codecov]

Codecov Report

Attention: Patch coverage is 81.08108% with 7 lines in your changes missing coverage. Please review.

Project coverage is 70.14%. Comparing base (2d7e766) to head (3eb9e86).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
session/middleware/start_session.go	20.00%	3 Missing and 1 partial ⚠️
session/session.go	82.35%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #644      +/-   ##
==========================================
+ Coverage   70.06%   70.14%   +0.08%     
==========================================
  Files         184      184              
  Lines       11331    11340       +9     
==========================================
+ Hits         7939     7955      +16     
+ Misses       2810     2803       -7     
  Partials      582      582              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[devhaozi]

I have another question, what is the use of _token in session? It seems to just set but not used.

[kkumar-gcc]

I have another question, what is the use of _token in session? It seems to just set but not used.

I initially started implementing session-based CSRF verification middleware but later dropped the idea. The _token is typically used for CSRF protection. (and result was session module instead of middleware)

[hwbrzzl]

Clearer 👍 Only update test cases.

[devhaozi]

LGTM

[hwbrzzl]

Great PR 👍