CodeSampleX

Sample

Parse Prometheus text exposition format metrics into metric families using expfmt.TextParser

sha256:11620403c1eb9826ec622c9bde16e3b997e0be7caf94a945ce54a87e42a7cdb7

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment go linux x64 go go go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-23

Case

HOW
Goal
Parse Prometheus text exposition format metrics into metric families using expfmt.TextParser
Packages
Symbols
  • github.com/prometheus/common/expfmt.TextParser.TextToMetricFamilies
Environment
go
Created
2026-08-23T17:04:07Z

Contract

  1. TextParser.TextToMetricFamilies parses Prometheus text format exposition input into a map of MetricFamily pointers keyed by metric family name.
  2. HELP and TYPE comments are correctly parsed into MetricFamily Help and Type metadata (such as MetricType_COUNTER and MetricType_GAUGE).
  3. Parsed metrics contain label name and value pairs as well as numeric counter or gauge sample values and optional millisecond timestamps.
  4. Exposition input streams with multiple distinct metric families are parsed into separate map entries.
  5. Malformed metric exposition input produces a non-nil parse error.

Files

  • NOTES.md
  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • parser_test.go
  • spec.json

Download the source artifact (tar.gz)

Origin Seeder

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