Replace channel with concurrency

[dwertent]

Overview

Replaces channel with concurrency.
Set the desired number with the WORKER_CONCURRENCY environment variable.

[codiumai-pr-agent-free]

PR Analysis

• 🎯 Main theme: Replacing channel with concurrency
• 📌 Type of PR: Refactoring
• 🧪 Relevant tests added: No
• ✨ Focused PR: Yes, the PR is focused on replacing channel with concurrency for better performance and scalability.
• 🔒 Security concerns: No, the PR does not introduce any apparent security issues.

PR Feedback

• General suggestions: The PR is generally well-structured and the changes are clear. However, it lacks tests to verify the new concurrency implementation. It's crucial to ensure that the new implementation works as expected and doesn't introduce any race conditions or other concurrency-related issues.

• 🤖 Code feedback:

  • relevant file: mainhandler/handlerequests.go
    suggestion: Consider handling the error returned by ants.NewPoolWithFunc. Ignoring this error might lead to unexpected behavior if the pool creation fails. [important]
    relevant line: pool, _ := ants.NewPoolWithFunc(utils.ConcurrencyWorkers, func(i interface{}) {

  • relevant file: utils/utils.go
    suggestion: Consider returning an error from ParseIntEnvVar function when the environment variable is not an integer. This can help in identifying configuration issues early. [medium]
    relevant line: return defaultValue, fmt.Errorf("failed to parse %s env var as int: %w", varName, err)

  • relevant file: mainhandler/handlerequests.go
    suggestion: Consider adding a limit or a control mechanism for the number of goroutines that can be created. This can prevent potential issues with system resources if too many goroutines are created. [medium]
    relevant line: mainHandler.eventWorkerPool = pool

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[github-actions]

Summary:

• License scan: success
• Credentials scan: success
• Vulnerabilities scan: success
• Unit test: success
• Go linting: failure

[vladklokun]

Other than the comments I’ve left, LGTM.

[github-actions]

Summary:

• License scan: success
• Credentials scan: success
• Vulnerabilities scan: success
• Unit test: success
• Go linting: success

[vladklokun]

Other than the test, LGTM.

[vladklokun]

issue: an environment variable leaks after running this test

Since there is no cleanup of variables after setting them up, an environment variable will leak into the runner system. Which is why it’s a good idea to use test doubles for environment variables, not actual the actual live ones. If we do want the live variables, just use the function provided for testing:

Suggested change

	if tt.varValue != "" {
	os.Setenv(tt.varName, tt.varValue)
	} else {
	os.Unsetenv(tt.varName)
	}
	if tt.varValue != "" {
	t.Setenv(tt.varName, tt.varValue)
	} else {
	t.Setenv(tt.varName, "")
	}

[dwertent]

I implemented it with defer

[vladklokun]

LGTM!

[vladklokun]

nitpick(non-blocking): there’s no need to use defer testing.T.Setenv rolls back your change at the end of test automatically

[github-actions]

Summary:

• License scan: success
• Credentials scan: success
• Vulnerabilities scan: success
• Unit test: success
• Go linting: success