feat(metrics): switch to fastify-metrics

[JAdshead]

Description

Reverts the custom request route metric and replaces with fastify-metrics

This includes metrics for the following, grouped by registered route and status code:

metric	labels	description
http_request_duration_seconds_count	method, route, status_code	Requests total count
http_request_duration_seconds_bucket	method, route, status_code	Requests durations by bucket
http_request_summary_seconds	method, route, status_code	Requests duration percentiles
http_request_summary_seconds_count	method, route, status_code	Requests total count

Example:

# TYPE http_request_duration_seconds histogram
http_request_duration_seconds_bucket{le="0.005",method="GET",route="/*",status_code="200"} 0
http_request_duration_seconds_bucket{le="0.01",method="GET",route="/*",status_code="200"} 1
http_request_duration_seconds_bucket{le="0.025",method="GET",route="/*",status_code="200"} 3
http_request_duration_seconds_bucket{le="0.05",method="GET",route="/*",status_code="200"} 3
http_request_duration_seconds_bucket{le="0.1",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="0.25",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="0.5",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="1",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="2.5",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="5",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="10",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="+Inf",method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_sum{method="GET",route="/*",status_code="200"} 0.092516233
http_request_duration_seconds_count{method="GET",route="/*",status_code="200"} 4
http_request_duration_seconds_bucket{le="0.005",method="GET",route="/_/static/*",status_code="200"} 2
http_request_duration_seconds_bucket{le="0.01",method="GET",route="/_/static/*",status_code="200"} 7
http_request_duration_seconds_bucket{le="0.025",method="GET",route="/_/static/*",status_code="200"} 12
http_request_duration_seconds_bucket{le="0.05",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="0.1",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="0.25",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="0.5",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="1",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="2.5",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="5",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="10",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_bucket{le="+Inf",method="GET",route="/_/static/*",status_code="200"} 20
http_request_duration_seconds_sum{method="GET",route="/_/static/*",status_code="200"} 0.417883017
http_request_duration_seconds_count{method="GET",route="/_/static/*",status_code="200"} 20

Motivation and Context

Improved http request metrics.

How Has This Been Tested?

Test suite and locally.

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (adding or updating documentation)
• Dependency update
• Security update

Checklist:

• My change requires a change to the documentation and I have updated the documentation accordingly.
• These changes should be applied to a maintenance branch.
• This change requires cross browser checks.
• Performance tests should be ran against the server prior to merging.
• This change impacts caching for client browsers.
• This change impacts HTTP headers.
• This change adds additional environment variable requirements for One App users.
• I have added the Apache 2.0 license header to any new files created.

What is the Impact to Developers Using One App?

[github-actions]

Size Change: 0 B

Total Size: 687 kB

ℹ️ View Unchanged

Filename	Size
./build/app/app.js	164 kB
./build/app/app~vendors.js	389 kB
./build/app/runtime.js	7.07 kB
./build/app/service-worker-client.js	7.26 kB
./build/app/vendors.js	120 kB

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[dogpatch626]

Why do we set endpoint to null? how exactly does this change how some one will retrieve the metrics itself? im assuming none but still wondering

[JAdshead]

there is already a separate metrics server running. this disables the plugin from adding metrics routes to the main one app server

[dogpatch626]

gotcha makes sense