Files
pulse/internal/api
rcourtman 686c2e8716 feat(reporting): availability section computed from the resource state timeline
Performance reports answered 'what were the averages' but never 'was my
infrastructure up' - the question a managed-service client reads a
monthly report for. Reports now carry an Availability summary derived
from the recorded resource change timeline (state_transition entries
keyed by the canonical unified ID):

- uptime percent over the observed portion of the window, outage count,
  total downtime, and longest outage, rendered in the executive summary
  with an explicit semantics note; fleet summaries gain a per-resource
  Uptime column and CSV exports gain availability header lines
- absent/unknown spans are unobserved time: excluded from the uptime
  math entirely and disclosed as coverage, never counted as downtime.
  The journal records a registry absence for every monitor restart, so
  treating gaps as outages would invent fleet-wide downtime every time
  the operator restarts Pulse
- warning states count as up (the resource is reachable and serving);
  the uptime label clamps rounding so any real downtime can never
  display as a clean 100%
- resources with no timeline render no availability section at all
  rather than a fabricated number

Verified live against a real 7-day window: uptime/outage/downtime
figures reconcile with the raw resource_changes journal.
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Internal API Package

This directory contains the API server implementation for Pulse.

Important Note About frontend-modern/

The frontend-modern/ subdirectory that appears here is:

  • AUTO-GENERATED during builds
  • NOT the source code - just a build artifact
  • IN .gitignore - never committed
  • REQUIRED BY GO - The embed directive needs it here

Frontend Development Location

👉 Edit frontend files at: ${PULSE_REPOS_DIR}/pulse/frontend-modern/src/

Why This Structure?

Go's //go:embed directive has limitations:

  1. Cannot use ../ paths to access parent directories
  2. Cannot follow symbolic links
  3. Must embed files within the Go module

This is a known Go limitation and our structure works around it.