feat(metrics): add vods size in bytes metrics

[Entrivax]

#1095 (comment) I'm a little bit late, it was merged just before I finished to add the bytes part

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between a564d6c and ac6248c.

📒 Files selected for processing (1)

• internal/metrics/metrics.go

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Walkthrough

The pull request adds two new Prometheus metrics to track VOD storage sizes: a Gauge for total VODs bytes and a GaugeVec for per-channel VOD bytes. These metrics are initialized in NewService and populated in GatherMetrics by aggregating vod.StorageSizeBytes values.

Changes

Cohort / File(s)	Summary
Prometheus Metrics Enhancement internal/metrics/metrics.go	Adds totalVodsBytes Gauge and channelVodBytes GaugeVec fields to the Metrics struct. Initializes and registers these metrics in NewService. Extends GatherMetrics to compute per-channel VOD storage sizes by aggregating vod.StorageSizeBytes and updates the channel-level aggregation loop to track both duration and storage bytes.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding VOD size metrics in bytes to the metrics system.
Description check	✅ Passed	The description is related to the changeset, explaining the context that this PR adds the bytes portion of VOD size metrics.

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[Zibbp]

sorry for merging the other one too soon, thanks!

[Entrivax]

No problem!