Add metrics to compression and existence cache store

[blakehatch]

Description

Adds metrics for existence cache store and compression store.

Fixes #647

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Checklist

• Updated documentation if needed
• Tests added/amended
• bazel test //... passes locally
• PR is contained in a single commit, using git amend see some docs

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Name	Status	Preview	Comments	Updated (UTC)
nativelink-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 2, 2024 3:25am

[allada]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: 0 of 1 LGTMs obtained

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nativelink-store/src/compression_store.rs line 199 at r1 (raw file):

}

impl MetricsComponent for UploadState {

nit: This is not used or bound anywhere.

UploadState is a temporary state for each upload payload not a global.

[blakehatch]

Reviewable status: 0 of 1 LGTMs obtained, and pending CI: Analyze (javascript-typescript), Local / ubuntu-22.04, Vercel, integration-tests (20.04), pre-commit-checks, publish-image, ubuntu-20.04 / stable, ubuntu-22.04

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nativelink-store/src/compression_store.rs line 199 at r1 (raw file):

Previously, allada (Nathan (Blaise) Bruer) wrote…

nit: This is not used or bound anywhere.

UploadState is a temporary state for each upload payload not a global.

Done.

[allada]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! 1 of 1 LGTMs obtained