owenandClaude Sonnet 5
ba1f7c4c03
Self-contained HTTP/HTTPS/TCP/UDP reverse proxy manager written in Go, with SQLite storage, a Bootstrap 5 admin UI (Go templates, no JS framework), and a REST API under /api/v1. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QTXFrNP1imCW7jtfL5SZrw
70 lines
2.5 KiB
Go
70 lines
2.5 KiB
Go
// Package metrics exposes Prometheus counters/gauges/histograms for HTTP,
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// TCP/UDP, backend, and TLS activity.
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package metrics
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import (
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"net/http"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var (
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HTTPRequestsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
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Name: "vibeproxy_http_requests_total",
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Help: "Total HTTP requests handled by the proxy.",
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}, []string{"proxy_host", "method", "status"})
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HTTPRequestDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
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Name: "vibeproxy_http_request_duration_seconds",
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Help: "HTTP request latency observed by the proxy, end to end.",
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Buckets: prometheus.DefBuckets,
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}, []string{"proxy_host"})
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BackendRequestDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
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Name: "vibeproxy_backend_request_duration_seconds",
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Help: "Backend response latency as observed by the proxy.",
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Buckets: prometheus.DefBuckets,
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}, []string{"proxy_host", "backend"})
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BytesTransferred = promauto.NewCounterVec(prometheus.CounterOpts{
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Name: "vibeproxy_bytes_transferred_total",
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Help: "Bytes transferred through the proxy.",
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}, []string{"direction", "protocol"}) // direction=in|out, protocol=http|tcp|udp
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ActiveConnections = promauto.NewGaugeVec(prometheus.GaugeOpts{
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Name: "vibeproxy_active_connections",
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Help: "Currently active connections.",
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}, []string{"protocol"}) // http|tcp|udp
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BackendHealth = promauto.NewGaugeVec(prometheus.GaugeOpts{
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Name: "vibeproxy_backend_healthy",
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Help: "1 if the backend is currently considered healthy, else 0.",
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}, []string{"proxy_host", "backend"})
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TCPConnectionsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
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Name: "vibeproxy_tcp_connections_total",
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Help: "Total TCP stream connections accepted.",
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}, []string{"stream"})
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UDPPacketsTotal = promauto.NewCounterVec(prometheus.CounterOpts{
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Name: "vibeproxy_udp_packets_total",
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Help: "Total UDP packets proxied.",
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}, []string{"stream", "direction"})
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TLSHandshakesTotal = promauto.NewCounterVec(prometheus.CounterOpts{
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Name: "vibeproxy_tls_handshakes_total",
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Help: "Total TLS handshakes, by result.",
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}, []string{"result"}) // ok|error
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CertificateExpirySeconds = promauto.NewGaugeVec(prometheus.GaugeOpts{
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Name: "vibeproxy_certificate_expiry_seconds",
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Help: "Seconds until certificate expiry (negative if already expired).",
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}, []string{"name"})
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)
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func Handler() http.Handler {
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return promhttp.Handler()
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}
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