WIP introduce an event metrics plugin with a general schema

[droslean]

/cc @openshift/test-platform

[Copilot]

Pull Request Overview

This PR introduces a new events metrics plugin with a general schema for capturing and storing event data. The implementation adds an eventsPlugin alongside existing metrics plugins to collect events with structured metadata including level, source, locator, and message information.

Key changes:

• Created a new events plugin with a general event schema supporting Info, Warning, and Error levels
• Integrated the events plugin into the MetricsAgent lifecycle (initialization, recording, and flushing)
• Refactored the flush method to use map literal initialization

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
pkg/metrics/events.go	Implements the new events plugin with event schema definitions and plugin interface methods
pkg/metrics/metrics.go	Integrates the events plugin into MetricsAgent for event recording and output

---

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[Copilot]

The Timestamp field is not set in the NewEvent constructor. The Event struct includes a Timestamp field (line 29) which remains zero-valued when events are created through this constructor. Consider either setting it in the constructor or documenting that callers must use SetTimestamp separately.

Suggested change

	return &Event{Level: level, Source: source, From: from, To: to, Locator: locator, Message: message}
	return &Event{
	Level: level,
	Source: source,
	From: from,
	To: to,
	Locator: locator,
	Message: message,
	Timestamp: time.Now(),
	}

[Copilot]

The Events() method returns the slice without mutex protection, which could lead to race conditions if called concurrently with Record(). Consider acquiring the mutex before returning the slice or returning a copy to ensure thread safety.

Suggested change

	return p.events
	p.mu.Lock()
	defer p.mu.Unlock()
	eventsCopy := make([]MetricsEvent, len(p.events))
	copy(eventsCopy, p.events)
	return eventsCopy

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: droslean

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[openshift-ci]

@droslean: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/lint	d60c704	link	true	/test lint
ci/prow/breaking-changes	d60c704	link	false	/test breaking-changes
ci/prow/images	d60c704	link	true	/test images

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