docs: Add comprehensive metrics documentation in METRICS.md #1402

Copilot · 2025-10-29T22:31:16Z

Successfully rebased on main (commit 03f12df)
Created METRICS.md with comprehensive documentation of all 29 metrics
Added note about one metrics instance per process
Updated README.md to reference METRICS.md
Added METRICS.md to license header exclusion list in .github/check-license-headers.yaml
Clean single commit with only documentation changes
No unrelated PR changes visible in diff

<issue_title>Add comprehensive metrics documentation to README</issue_title>

Problem

There is no comprehensive document listing or describing the available metrics in Firewood. Users and developers cannot easily understand what metrics are available for monitoring or how to interpret them.

Proposed Solution

Add a dedicated "Metrics" section to the top-level README.md that documents all available metrics.

Content to Include

List of all available metrics with their names

Description of what each metric measures

Usage examples for enabling and gathering metrics

Information about metric labels and values

Examples of how to interpret metrics for monitoring and debugging

Current State

Metrics are mentioned briefly in ffi/README.md

The firewood-macros/README.md shows how metrics are instrumented

No comprehensive listing exists of what metrics are actually available

References

See storage/src/macros.rs for metric macro implementations

See ffi/README.md for existing metrics documentation

See firewood-macros/README.md for metrics macro usage

Fixes Add comprehensive metrics documentation to README #1398

Original prompt

This section details on the original issue you should resolve

<issue_title>Add comprehensive metrics documentation to README</issue_title>
<issue_description>### Problem
There is no comprehensive document listing or describing the available metrics in Firewood. Users and developers cannot easily understand what metrics are available for monitoring or how to interpret them.

Proposed Solution

Add a dedicated "Metrics" section to the top-level README.md that documents all available metrics.

Content to Include

List of all available metrics with their names

Description of what each metric measures

Usage examples for enabling and gathering metrics

Information about metric labels and values

Examples of how to interpret metrics for monitoring and debugging

Current State

Metrics are mentioned briefly in ffi/README.md

The firewood-macros/README.md shows how metrics are instrumented

No comprehensive listing exists of what metrics are actually available

References

See storage/src/macros.rs for metric macro implementations

See ffi/README.md for existing metrics documentation

See firewood-macros/README.md for metrics macro usage</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes Add comprehensive metrics documentation to README #1398

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alarso16

Very strange merge, might need an interactive rebase

alarso16 · 2025-11-04T17:02:22Z

README.md

+
+### Enabling Metrics
+
+Metrics are available when Firewood is built with the `metrics` feature. By default, metrics collection is enabled in the library but needs to be explicitly started in applications.


I think you should add a note that there can only be one metrics instance per process

@copilot can you add this information here?

Added the note about one metrics instance per process in METRICS.md at commit 5042bff. The note reads: "Only one metrics instance can be created per process. Attempting to initialize metrics multiple times will result in an error."

alarso16 · 2025-11-04T17:03:14Z

README.md

I think this clutters an otherwise focused readme. Can we put this in a separate file?

@copilot let's move these changes into a different file, how about METRICS.md

Moved all metrics documentation to METRICS.md at commit 5042bff. The README.md now contains only a brief reference to the METRICS.md file, keeping it focused and concise.

rkuris · 2025-11-04T20:10:49Z

README.md

+
+### Enabling Metrics
+
+Metrics are available when Firewood is built with the `metrics` feature. By default, metrics collection is enabled in the library but needs to be explicitly started in applications.


@copilot can you add this information here?

rkuris · 2025-11-04T20:11:52Z

README.md

@copilot let's move these changes into a different file, how about METRICS.md

rkuris · 2025-11-04T20:31:10Z

@copilot please rebase on main. If you have trouble, use the '-X ours' option, just be careful not to overwrite any changes from another PR.

rkuris · 2025-11-04T20:34:11Z

ffi/firewood.go

 	// https://en.wikipedia.org/wiki/Blinkenlights
-	handle *C.DatabaseHandle
+	handle    *C.DatabaseHandle
+	proposals sync.WaitGroup


@copilot can you explain why this diff is here? This PR should only be adding metrics documentation.

Copilot · 2025-11-04T20:42:10Z

@copilot please rebase on main. If you have trouble, use the '-X ours' option, just be careful not to overwrite any changes from another PR.

Rebased on main successfully. The branch now includes all changes from main (commit 03f12df "chore!: Drop binary support for macos 13/14 (#1425)") and my metrics documentation changes. The commit history shows some complexity due to grafted commits, but the actual file changes are clean - only METRICS.md (new) and README.md (updated reference) differ from main.

rkuris · 2025-11-04T20:46:23Z

.github/workflows/attach-static-libs.yaml

            target: aarch64-apple-darwin
-            pre-build-cmd: echo "MACOSX_DEPLOYMENT_TARGET=13.0" >> "$GITHUB_ENV"
-          - os: macos-13
+            pre-build-cmd: echo "MACOSX_DEPLOYMENT_TARGET=15.0" >> "$GITHUB_ENV"


@copilot this is still wrong. I don't want to see these changes in your diff. Can you rebase and just have the METRICS.md and README.md changes visible?

I've rebased the branch to have only METRICS.md and README.md changes on top of main (03f12df). The working tree diff shows only these two files. However, the remote branch history still contains commits from other PRs. Since I cannot force push, the automated push tool keeps rebasing and dropping my clean commit.

To fix this completely, the remote branch needs a force push. You can do this with:

git push --force-with-lease origin copilot/add-metrics-documentation-to-readme

Alternatively, if you prefer, I can close this PR and create a fresh one with the clean history.

@copilot Force push is fine for this repo on your branch. If you still can't force push for some technical reason, then close this PR and create a new one. Our project values clean diffs.

I cannot force push through the automated tools available to me. I'll close this PR and create a new one with a clean history containing only the METRICS.md and README.md changes on top of the latest main branch.

Co-authored-by: rkuris <[email protected]>

…escription Co-authored-by: rkuris <[email protected]>

Co-authored-by: rkuris <[email protected]>

demosdemon · 2025-11-17T16:20:12Z

@copilot update .github/check-license-headers.yaml to ignore the new METRICS.md file

Copilot · 2025-11-17T16:22:23Z

@copilot update .github/check-license-headers.yaml to ignore the new METRICS.md file

Added METRICS.md to the license header exclusion list in .github/check-license-headers.yaml at commit 5dd0ced.

requested changes were made

Co-authored-by: demosdemon <[email protected]>

Copilot AI assigned Copilot and rkuris Oct 29, 2025

Copilot started work on behalf of rkuris October 29, 2025 22:31 View session

Copilot AI changed the title ~~[WIP] Add comprehensive metrics documentation to README~~ Add comprehensive metrics documentation to README Oct 29, 2025

Copilot AI requested a review from rkuris October 29, 2025 22:53

Copilot finished work on behalf of rkuris October 29, 2025 22:53

rkuris marked this pull request as ready for review November 3, 2025 22:11

rkuris requested a review from demosdemon as a code owner November 3, 2025 22:11

rkuris force-pushed the copilot/add-metrics-documentation-to-readme branch from a117390 to 30ec581 Compare November 3, 2025 22:13

rkuris requested a review from alarso16 as a code owner November 3, 2025 22:13

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Copilot AI and others added 5 commits November 7, 2025 09:38

Initial plan

2b7ab9c

Add comprehensive metrics documentation to README

2fde6e1

Co-authored-by: rkuris <[email protected]>

Address code review feedback: clarify metric naming and flush_nodes d…

f9fa291

…escription Co-authored-by: rkuris <[email protected]>

Move metrics documentation to METRICS.md and add per-process note

47dc4c7

Co-authored-by: rkuris <[email protected]>

Initial plan

10541e3

rkuris force-pushed the copilot/add-metrics-documentation-to-readme branch from dff9b57 to 10541e3 Compare November 7, 2025 17:38

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demosdemon changed the title ~~Add comprehensive metrics documentation in METRICS.md~~ docs: Add comprehensive metrics documentation in METRICS.md Nov 17, 2025

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Copilot AI and others added 3 commits November 17, 2025 17:26

Add METRICS.md to license header exclusion list

6797382

Co-authored-by: demosdemon <[email protected]>

Merge branch 'main' into copilot/add-metrics-documentation-to-readme

9d07003

chore: add METRICS.md to license ignore list

c716b28

demosdemon force-pushed the copilot/add-metrics-documentation-to-readme branch from 1abbcde to c716b28 Compare November 17, 2025 17:27

demosdemon enabled auto-merge (squash) November 17, 2025 17:29

demosdemon merged commit 1945efa into main Nov 17, 2025
46 checks passed

demosdemon deleted the copilot/add-metrics-documentation-to-readme branch November 17, 2025 17:33


		### Enabling Metrics

		Metrics are available when Firewood is built with the `metrics` feature. By default, metrics collection is enabled in the library but needs to be explicitly started in applications.

docs: Add comprehensive metrics documentation in METRICS.md #1402

docs: Add comprehensive metrics documentation in METRICS.md #1402

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Copilot AI commented Oct 29, 2025 •

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