added metrics for the crucial operations

[kommendorkapten]

Closes https://github.com/github/package-security/issues/3985

[Copilot]

Pull request overview

This PR adds Prometheus metrics instrumentation to track the performance and reliability of the deployment tracker's crucial operations. The changes enable monitoring of event processing and deployment record posting operations.

Key Changes:

• Introduces Prometheus metrics for event processing and API posting operations
• Adds a metrics HTTP server endpoint exposing metrics at :9090/metrics
• Instruments critical code paths with timing and status tracking

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
pkg/metrics/prom.go	Defines Prometheus metric collectors for events and deployment record operations
pkg/deploymentrecord/client.go	Instruments HTTP POST operations with metrics and enhanced logging
internal/controller/controller.go	Adds metrics tracking for event processing duration and outcomes
go.mod	Adds Prometheus client library dependency (v1.23.2) and updates transitive dependencies
cmd/deployment-tracker/main.go	Starts metrics HTTP server and adds metrics port configuration flag
README.md	Documents new metrics endpoint, available metrics, and command-line flag

---

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[Copilot]

Pull request overview

This PR adds Prometheus metrics instrumentation to track the performance and health of crucial operations in the deployment tracker, including Kubernetes event processing and deployment record API calls.

Key Changes:

• Added comprehensive Prometheus metrics for event processing and API operations
• Instrumented the controller to track event processing duration and success/failure rates
• Enhanced API client with metrics for deployment record posts and retry behavior

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
pkg/metrics/prom.go	Defines Prometheus metrics for tracking event processing and API operations
pkg/deploymentrecord/client.go	Adds timing and success/failure metrics to the POST operation with enhanced logging
internal/controller/controller.go	Instruments event processing with duration and outcome metrics
go.mod	Adds prometheus client library dependency with version 1.23.2
cmd/deployment-tracker/main.go	Starts HTTP server on port 9090 to expose Prometheus metrics
README.md	Documents the new metrics endpoint, available metrics, and command-line flag

---

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[Copilot]

Pull request overview

This PR adds Prometheus metrics instrumentation to track the health and performance of the deployment tracker's crucial operations, including Kubernetes event processing and deployment record API posting.

Key changes:

• Introduces Prometheus metrics for event processing success/failure rates and durations
• Adds metrics for deployment record API operations including success, soft failures, and hard failures
• Exposes metrics via HTTP endpoint on port 9090 (configurable)

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pkg/metrics/prom.go	Defines Prometheus metrics for event processing and deployment record posting operations
pkg/deploymentrecord/client.go	Instruments the PostOne method with timing metrics and failure counters
internal/controller/controller.go	Adds metrics collection for event processing duration and success/failure counts
go.mod	Adds prometheus/client_golang dependency and updates transitive dependencies
cmd/deployment-tracker/main.go	Starts HTTP server to expose Prometheus metrics endpoint
README.md	Documents the new metrics endpoint and available metrics

---

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[Copilot]

Pull request overview

This PR adds Prometheus metrics instrumentation to track the performance and reliability of crucial operations in the deployment tracker. The changes enable monitoring of event processing from the Kubernetes API and HTTP POST operations to GitHub's API.

Key changes:

• Introduced Prometheus metrics for tracking event processing success/failure rates and durations
• Added metrics for monitoring deployment record upload operations (success, soft failures, hard failures, and latency)
• Set up a metrics HTTP server endpoint on port 9090 (configurable)

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pkg/metrics/prom.go	Defines Prometheus metric collectors for event processing and deployment record operations
pkg/deploymentrecord/client.go	Instruments the PostOne method with metrics and logging for tracking upload attempts and outcomes
internal/controller/controller.go	Adds timing and status metrics to event processing pipeline
go.mod	Adds prometheus client library dependency and updates transitive dependencies
cmd/deployment-tracker/main.go	Starts HTTP server for exposing Prometheus metrics endpoint
README.md	Documents the new metrics endpoint, available metrics, and command-line flag

---

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