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9 Commits

Author SHA1 Message Date
rcourtman
df43f08cf2 fix: address linting issues and test adjustments 
cmd/eval/main.go:
- Fix fmt.Errorf format string lint warning (use %s instead of bare string)

internal/logging/logging_test.go:
- Update tests to account for LogBroadcaster wrapper in baseWriter
- Use string representation checks instead of direct pointer comparison
- Verify both the underlying writer and broadcaster are present
 2026-02-01 23:27:11 +00:00
rcourtman
bb8fbfb411 feat(backend): implement real-time log broadcasting and handlers 2026-01-30 19:01:58 +00:00
rcourtman
c6bd8cb74c Improve internal package test coverage 2025-12-29 17:25:21 +00:00
rcourtman
6a8258be14 chore: remove dead code and unused exports 
Remove ~900 lines of unused code identified by static analysis:

Go:
- internal/logging: Remove 10 unused functions (InitFromConfig, New,
  FromContext, WithLogger, etc.) that were built but never integrated
- cmd/pulse-sensor-proxy: Remove 7 dead validation functions for a
  removed command execution feature
- internal/metrics: Remove 8 unused notification metric functions and
  10 Prometheus metrics that were never wired up

Frontend:
- Delete ActivationBanner.tsx stub component
- Remove unused exports: stopMetricsSampler, getSamplerStatus,
  formatSpeedCompact, parseMetricKey, getResourceAlerts
 2025-11-27 13:17:39 +00:00
rcourtman
611740087c style: fix additional staticcheck warnings 
- Lowercase error messages (ST1005)
- Use context.Background() instead of nil (SA1012)
- Fix rand.Intn(1) which always returns 0 (SA4030)
- Remove unnecessary nil check before len() (S1009)
 2025-11-27 09:21:11 +00:00
rcourtman
0dc0235f77 chore: remove dead code and unused files 
Remove 604 lines of unreachable code identified by deadcode analysis:
- internal/config/credentials.go: unused credential resolver
- internal/config/registration.go: unused registration config
- internal/monitoring/poller.go: unused channel-based polling (keep types)
- internal/api/middleware.go: unused TimeoutHandler, JSONHandler, NewAPIError, ValidationError
- internal/api/security.go: unused IsLockedOut, SecurityHeaders
- internal/api/auth.go: unused min helper
- internal/config/config.go: unused SaveConfig
- internal/config/client_helpers.go: unused CreatePBSConfigFromFields
- internal/logging/logging.go: unused NewRequestID
 2025-11-27 00:05:04 +00:00
rcourtman
01f7d81d38 style: fix gofmt formatting inconsistencies 
Run gofmt -w to fix tab/space inconsistencies across 33 files.
 2025-11-26 23:44:36 +00:00
rcourtman
2786afdff0 feat: comprehensive diagnostics and observability improvements 
Upgrade diagnostics infrastructure from 5/10 to 8/10 production readiness
with enhanced metrics, logging, and request correlation capabilities.

**Request Correlation**
- Wire request IDs through context in middleware
- Return X-Request-ID header in all API responses
- Enable downstream log correlation across request lifecycle

**HTTP/API Metrics** (18 new Prometheus metrics)
- pulse_http_request_duration_seconds - API latency histogram
- pulse_http_requests_total - request counter by method/route/status
- pulse_http_request_errors_total - error counter by type
- Path normalization to control label cardinality

**Per-Node Poll Metrics**
- pulse_monitor_node_poll_duration_seconds - per-node timing
- pulse_monitor_node_poll_total - success/error counts per node
- pulse_monitor_node_poll_errors_total - error breakdown per node
- pulse_monitor_node_poll_last_success_timestamp - freshness tracking
- pulse_monitor_node_poll_staleness_seconds - age since last success
- Enables multi-node hotspot identification

**Scheduler Health Metrics**
- pulse_scheduler_queue_due_soon - ready queue depth
- pulse_scheduler_queue_depth - by instance type
- pulse_scheduler_queue_wait_seconds - time in queue histogram
- pulse_scheduler_dead_letter_depth - failed task tracking
- pulse_scheduler_breaker_state - circuit breaker state
- pulse_scheduler_breaker_failure_count - consecutive failures
- pulse_scheduler_breaker_retry_seconds - time until retry
- Enable alerting on DLQ spikes, breaker opens, queue backlogs

**Diagnostics Endpoint Caching**
- pulse_diagnostics_cache_hits_total - cache performance
- pulse_diagnostics_cache_misses_total - cache misses
- pulse_diagnostics_refresh_duration_seconds - probe timing
- 45-second TTL prevents thundering herd on /api/diagnostics
- Thread-safe with RWMutex
- X-Diagnostics-Cached-At header shows cache freshness

**Debug Log Performance**
- Gate high-frequency debug logs behind IsLevelEnabled() checks
- Reduces CPU waste in production when debug disabled
- Covers scheduler loops, poll cycles, API handlers

**Persistent Logging**
- File logging with automatic rotation
- LOG_FILE, LOG_MAX_SIZE, LOG_MAX_AGE, LOG_COMPRESS env vars
- MultiWriter sends logs to both stderr and file
- Gzip compression support for rotated logs

Files modified:
- internal/api/diagnostics.go (caching layer)
- internal/api/middleware.go (request IDs, HTTP metrics)
- internal/api/http_metrics.go (NEW - HTTP metric definitions)
- internal/logging/logging.go (file logging with rotation)
- internal/monitoring/metrics.go (node + scheduler metrics)
- internal/monitoring/monitor.go (instrumentation, debug gating)

Impact: Dramatically improved production troubleshooting with per-node
visibility, scheduler health metrics, persistent logs, and cached
diagnostics. Fast incident response now possible for multi-node deployments.
 2025-10-21 12:37:39 +00:00
rcourtman
7d422d2909 feat: add professional logging with runtime configuration and performance optimization 
Implements structured logging package with LOG_LEVEL/LOG_FORMAT env support, debug level guards for hot paths, enriched error messages with actionable context, and stack trace capture for production debugging. Improves observability and reduces log overhead in high-frequency polling loops.
 2025-10-20 15:13:38 +00:00