mirror of
https://github.com/rcourtman/Pulse.git
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57429900a6
Implements adaptive scheduling foundation for Phase 2: - Poll cycle metrics: duration, staleness, queue depth, in-flight counters - Adaptive scheduler with pluggable staleness/interval/enqueue interfaces - Config support: ADAPTIVE_POLLING_ENABLED flag + min/max/base intervals - Feature flag defaults to disabled for safe rollout - Scheduler wiring into Monitor with conditional instantiation Tasks 1-3 of 10 complete. Ready for staleness tracker implementation.
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package main
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import (
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"context"
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"net/http"
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"time"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/rs/zerolog/log"
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)
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func startMetricsServer(ctx context.Context, addr string) {
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mux := http.NewServeMux()
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mux.Handle("/metrics", promhttp.Handler())
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srv := &http.Server{
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Addr: addr,
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Handler: mux,
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ReadTimeout: 5 * time.Second,
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WriteTimeout: 10 * time.Second,
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IdleTimeout: 30 * time.Second,
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}
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go func() {
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<-ctx.Done()
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := srv.Shutdown(shutdownCtx); err != nil && err != http.ErrServerClosed {
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log.Warn().Err(err).Msg("Failed to shut down metrics server cleanly")
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}
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}()
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go func() {
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log.Info().Str("addr", addr).Msg("Metrics endpoint listening")
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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log.Warn().Err(err).Msg("Metrics server stopped unexpectedly")
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}
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}()
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}
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