grafana dashboard template

- fixed "API JWT secret empty" warning output format
- fixed metrics initialized when it should not
- fixed middlewares.modifyRequest Host header not working properly

.env.example

@@ -2,21 +2,24 @@
 TZ=ETC/UTC
 
 # generate secret with `openssl rand -base64 32`
-GOPROXY_API_JWT_SECRET=
+GODOXY_API_JWT_SECRET=
 
 # the JWT token time-to-live
-GOPROXY_API_JWT_TOKEN_TTL=1h
+GODOXY_API_JWT_TOKEN_TTL=1h
 
 # API/WebUI login credentials
-GOPROXY_API_USER=admin
-GOPROXY_API_PASSWORD=password
+GODOXY_API_USER=admin
+GODOXY_API_PASSWORD=password
 
 # Proxy listening address
-GOPROXY_HTTP_ADDR=:80
-GOPROXY_HTTPS_ADDR=:443
+GODOXY_HTTP_ADDR=:80
+GODOXY_HTTPS_ADDR=:443
 
 # API listening address
-GOPROXY_API_ADDR=127.0.0.1:8888
+GODOXY_API_ADDR=127.0.0.1:8888
+
+# Prometheus Metrics listening address (uncomment to enable)
+#GODOXY_PROMETHEUS_ADDR=:8889
 
 # Debug mode
-GOPROXY_DEBUG=false
+GODOXY_DEBUG=false

.trunk/trunk.yaml

@@ -17,6 +17,9 @@ runtimes:
     - go@1.23.2
 # This is the section where you manage your linters. (https://docs.trunk.io/check/configuration)
 lint:
+  disabled:
+    - markdownlint
+    - yamllint
   enabled:
     - hadolint@2.12.0
     - actionlint@1.7.3
@@ -24,14 +27,12 @@ lint:
     - git-diff-check
     - gofmt@1.20.4
     - golangci-lint@1.61.0
-    - markdownlint@0.42.0
     - osv-scanner@1.9.0
     - oxipng@9.1.2
     - prettier@3.3.3
     - shellcheck@0.10.0
     - shfmt@3.6.0
     - trufflehog@3.82.7
-    - yamllint@1.35.1
 actions:
   disabled:
     - trunk-announce

Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: Builder
-FROM golang:1.23.2-alpine AS builder
+FROM golang:1.23.3-alpine AS builder
 RUN apk add --no-cache tzdata make
 
 WORKDIR /src
@@ -26,7 +26,7 @@ RUN --mount=type=cache,target="/go/pkg/mod" \
     --mount=type=bind,src=pkg,dst=/src/pkg \
     make build && \
     mkdir -p /app/error_pages /app/certs && \
-    mv bin/go-proxy /app/go-proxy
+    mv bin/godoxy /app/godoxy
 
 # Stage 2: Final image
 FROM scratch
@@ -43,11 +43,14 @@ COPY --from=builder /app /app
 # copy schema directory
 COPY schema/ /app/schema/
 
+# copy example config
+COPY config.example.yml /app/config/config.yml
+
 # copy certs
 COPY --from=builder /etc/ssl/certs /etc/ssl/certs
 
 ENV DOCKER_HOST=unix:///var/run/docker.sock
-ENV GOPROXY_DEBUG=0
+ENV GODOXY_DEBUG=0
 
 EXPOSE 80
 EXPOSE 8888
@@ -55,4 +58,4 @@ EXPOSE 443
 
 WORKDIR /app
 
-CMD ["/app/go-proxy"]
+CMD ["/app/godoxy"]

Makefile

@@ -13,7 +13,7 @@ build:
 	scripts/build.sh
 
 test:
-	GOPROXY_TEST=1 go test ./internal/...
+	GODOXY_TEST=1 go test ./internal/...
 
 up:
 	docker compose up -d
@@ -28,20 +28,20 @@ get:
 	go get -u ./cmd && go mod tidy
 
 debug:
-	GOPROXY_DEBUG=1 make run
+	GODOXY_DEBUG=1 make run
 
 debug-trace:
-	GOPROXY_DEBUG=1 GOPROXY_TRACE=1 run
+	GODOXY_DEBUG=1 GODOXY_TRACE=1 run
 
 profile:
 	GODEBUG=gctrace=1 make debug
 
 run: build
-	sudo setcap CAP_NET_BIND_SERVICE=+eip bin/go-proxy
-	bin/go-proxy
+	sudo setcap CAP_NET_BIND_SERVICE=+eip bin/godoxy
+	bin/godoxy
 
 mtrace:
-	bin/go-proxy debug-ls-mtrace > mtrace.json
+	bin/godoxy debug-ls-mtrace > mtrace.json
 
 archive:
 	git archive HEAD -o ../go-proxy-$$(date +"%Y%m%d%H%M").zip

README.md

@@ -1,4 +1,4 @@
-# go-proxy
+# GoDoxy
 
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
 [![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=ncloc)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
@@ -19,10 +19,11 @@ _Join our [Discord](https://discord.gg/umReR62nRd) for help and discussions_
 
 <!-- TOC -->
 
-- [go-proxy](#go-proxy)
+- [GoDoxy](#godoxy)
   - [Table of content](#table-of-content)
   - [Key Features](#key-features)
   - [Getting Started](#getting-started)
+    - [Prerequisites](#prerequisites)
     - [Setup](#setup)
     - [Manual Setup](#manual-setup)
     - [Folder structrue](#folder-structrue)
@@ -53,9 +54,16 @@ _Join our [Discord](https://discord.gg/umReR62nRd) for help and discussions_
 
 ## Getting Started
 
+### Prerequisites
+
+Setup DNS Records point to machine which runs `GoDoxy`, e.g.
+
+-   A Record: `*.y.z` -> `10.0.10.1`
+-   AAAA Record: `*.y.z` -> `::ffff:a00:a01`
+
 ### Setup
 
-1.  Pull docker image 
+1.  Pull the latest docker images
     
     ```shell
     docker pull ghcr.io/yusing/go-proxy:latest
@@ -64,21 +72,25 @@ _Join our [Discord](https://discord.gg/umReR62nRd) for help and discussions_
 2.  Create new directory, `cd` into it, then run setup, or [set up manually](#manual-setup) 
 
     ```shell
-    docker run --rm -v .:/setup ghcr.io/yusing/go-proxy /app/go-proxy setup
-    # Then set the JWT secret
-    sed -i "s|GOPROXY_API_JWT_SECRET=.*|GOPROXY_API_JWT_SECRET=$(openssl rand -base64 32)|g" .env
+    docker run --rm -v .:/setup ghcr.io/yusing/go-proxy /app/godoxy setup
     ```
 
-3.  Setup DNS Records point to machine which runs `go-proxy`, e.g.
+3. _(Optional)_ setup WebUI login
 
-    -   A Record: `*.y.z` -> `10.0.10.1`
-    -   AAAA Record: `*.y.z` -> `::ffff:a00:a01`
+    - set random JWT secret
+        ```shell
+        sed -i "s|API_JWT_SECRET=.*|API_JWT_SECRET=$(openssl rand -base64 32)|g" .env
+        ```
 
-4.  Setup `docker-socket-proxy` other docker nodes _(if any)_ (see [Multi docker nodes setup](https://github.com/yusing/go-proxy/wiki/Configurations#multi-docker-nodes-setup)) and then them inside `config.yml`
+    - change username and password for WebUI authentication
+        ```shell
+        sed -i "s|API_USERNAME=.*|API_USERNAME=admin|g" .env
+        sed -i "s|API_PASSWORD=.*|API_PASSWORD=some-strong-password|g" .env
+        ```
 
-5.  Run go-proxy `docker compose up -d` 
-    then list all routes to see if further configurations are needed:
-    `docker exec go-proxy /app/go-proxy ls-routes`
+4.  _(Optional)_ setup `docker-socket-proxy` other docker nodes (see [Multi docker nodes setup](https://github.com/yusing/go-proxy/wiki/Configurations#multi-docker-nodes-setup)) then add them inside `config.yml`
+
+5.  Start the container `docker compose up -d`
 
 6.  You may now do some extra configuration
     -   With text editor (e.g. Visual Studio Code)
@@ -101,12 +113,6 @@ _Join our [Discord](https://discord.gg/umReR62nRd) for help and discussions_
    
    `wget https://raw.githubusercontent.com/yusing/go-proxy/v0.7/compose.example.yml -O compose.yml`
 
-4. Set the JWT secret
-   
-   `sed -i "s|GOPROXY_API_JWT_SECRET=.*|GOPROXY_API_JWT_SECRET=$(openssl rand -base64 32)|g" .env`
-
-5. Start the container `docker compose up -d`
-
 ### Folder structrue
 
 ```shell

cmd/main.go

@@ -16,6 +16,7 @@ import (
 	"github.com/yusing/go-proxy/internal/config"
 	E "github.com/yusing/go-proxy/internal/error"
 	"github.com/yusing/go-proxy/internal/logging"
+	"github.com/yusing/go-proxy/internal/metrics"
 	"github.com/yusing/go-proxy/internal/net/http/middleware"
 	R "github.com/yusing/go-proxy/internal/route"
 	"github.com/yusing/go-proxy/internal/server"
@@ -48,11 +49,10 @@ func main() {
 		if err != nil {
 			log.Printf("failed to connect to api server: %s", err)
 			log.Printf("falling back to config file")
-			printJSON(config.RoutesByAlias())
 		} else {
 			printJSON(routes)
+			return
 		}
-		return
 	case common.CommandDebugListMTrace:
 		trace, err := query.ListMiddlewareTraces()
 		if err != nil {
@@ -63,7 +63,7 @@ func main() {
 	}
 
 	if args.Command == common.CommandStart {
-		logging.Info().Msgf("go-proxy version %s", pkg.GetVersion())
+		logging.Info().Msgf("GoDoxy version %s", pkg.GetVersion())
 		logging.Trace().Msg("trace enabled")
 		// logging.AddHook(notif.GetDispatcher())
 	} else {
@@ -95,6 +95,10 @@ func main() {
 	}
 
 	switch args.Command {
+	case common.CommandListRoutes:
+		cfg.StartProxyProviders()
+		printJSON(config.RoutesByAlias())
+		return
 	case common.CommandListConfigs:
 		printJSON(config.Value())
 		return
@@ -106,6 +110,10 @@ func main() {
 		return
 	}
 
+	if common.APIJWTSecret == nil {
+		logging.Warn().Msg("API JWT secret is empty, authentication is disabled")
+	}
+
 	cfg.StartProxyProviders()
 	config.WatchChanges()
 
@@ -123,7 +131,7 @@ func main() {
 		logging.Info().Msg("autocert not configured")
 	}
 
-	proxyServer := server.InitProxyServer(server.Options{
+	server.StartServer(server.Options{
 		Name:            "proxy",
 		CertProvider:    autocert,
 		HTTPAddr:        common.ProxyHTTPAddr,
@@ -131,7 +139,7 @@ func main() {
 		Handler:         http.HandlerFunc(R.ProxyHandler),
 		RedirectToHTTPS: config.Value().RedirectToHTTPS,
 	})
-	apiServer := server.InitAPIServer(server.Options{
+	server.StartServer(server.Options{
 		Name:            "api",
 		CertProvider:    autocert,
 		HTTPAddr:        common.APIHTTPAddr,
@@ -139,8 +147,15 @@ func main() {
 		RedirectToHTTPS: config.Value().RedirectToHTTPS,
 	})
 
-	proxyServer.Start()
-	apiServer.Start()
+	if common.PrometheusEnabled {
+		server.StartServer(server.Options{
+			Name:            "metrics",
+			CertProvider:    autocert,
+			HTTPAddr:        common.MetricsHTTPAddr,
+			Handler:         metrics.NewHandler(),
+			RedirectToHTTPS: config.Value().RedirectToHTTPS,
+		})
+	}
 
 	// wait for signal
 	<-sig
@@ -165,5 +180,5 @@ func printJSON(obj any) {
 		logging.Fatal().Err(err).Send()
 	}
 	rawLogger := log.New(os.Stdout, "", 0)
-	rawLogger.Printf("%s", j) // raw output for convenience using "jq"
+	rawLogger.Print(string(j)) // raw output for convenience using "jq"
 }

compose.example.yml

@@ -2,7 +2,7 @@
 services:
     frontend:
         image: ghcr.io/yusing/go-proxy-frontend:latest
-        container_name: go-proxy-frontend
+        container_name: godoxy-frontend
         restart: unless-stopped
         network_mode: host
         env_file: .env
@@ -21,7 +21,7 @@ services:
                 - 172.16.0.0/12
     app:
         image: ghcr.io/yusing/go-proxy:latest
-        container_name: go-proxy
+        container_name: godoxy
         restart: always
         network_mode: host
         env_file: .env

config.example.yml

@@ -57,13 +57,19 @@ providers:
 #   - my.site
 #   - node1.my.app
 
+# homepage config
+#
+homepage:
+  # use default app categories detected from alias or docker image name
+  use_default_categories: true
+
 # Below are fixed options (non hot-reloadable)
 
 # timeout for shutdown (in seconds)
 #
-# timeout_shutdown: 5
+timeout_shutdown: 5
 
 # global setting redirect http requests to https (if https available, otherwise this will be ignored)
 # proxy.<alias>.middlewares.redirect_http will override this
 #
-# redirect_to_https: false
+redirect_to_https: false

examples/error_pages/404.html

@@ -1,42 +1,51 @@
 {{/* Credit: https://codepen.io/code2rithik/pen/XWpVvYL */}}
 <!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>Page Not Found</title>
-    <link rel="stylesheet" href="/$gperrorpage/404.css" type="text/css">
-    {{/* <script src="/$gperrorpage/404.js"> */}}
-  </head>
-  <body>
-    <script>0</script>
-    <div></div>
-    <svg id="svgWrap_2" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 700 250">
-      <g>
-        <path id="id3_2" d="M195.7 232.67h-37.1V149.7H27.76c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98H158.6V29.62h37.1v203.05z"/>
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-    </svg>
-    <svg id="svgWrap_1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 700 250">
-      <g>
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-      </g>
-    </svg>
+<html lang="en">
 
-    <svg>
-      <defs>
-        <filter id="glow">
-          <fegaussianblur class="blur" result="coloredBlur" stddeviation="4"></fegaussianblur>
-          <femerge>
-            <femergenode in="coloredBlur"></femergenode>
-            <femergenode in="SourceGraphic"></femergenode>
-          </femerge>
-        </filter>
-      </defs>
-    </svg>
+<head>
+  <meta charset="UTF-8" />
+  <title>Page Not Found</title>
+  <link rel="stylesheet" href="/$gperrorpage/404.css" type="text/css">
+  <!-- <script src="/$gperrorpage/404.js"> </script> -->
+</head>
 
-    <h2>Page Not Found</h2>
-  </body>
-</html>
+<body>
+  <script>0</script>
+  <div></div>
+  <svg id="svgWrap_2" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 700 250">
+    <g>
+      <path id="id3_2"
+        d="M195.7 232.67h-37.1V149.7H27.76c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98H158.6V29.62h37.1v203.05z" />
+      <path id="id2_2"
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+      <path id="id1_2"
+        d="M688.33 232.67h-37.1V149.7H520.39c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98h112.57V29.62h37.1v203.05z" />
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+  </svg>
+  <svg id="svgWrap_1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 700 250">
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+      <path id="id2_1"
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+      <path id="id1_1"
+        d="M688.33 232.67h-37.1V149.7H520.39c-2.64 0-5.1-.5-7.36-1.49-2.27-.99-4.23-2.31-5.88-3.96-1.65-1.65-2.95-3.61-3.89-5.88s-1.42-4.67-1.42-7.22V29.62h36.82v82.98h112.57V29.62h37.1v203.05z" />
+    </g>
+  </svg>
+
+  <svg>
+    <defs>
+      <filter id="glow">
+        <fegaussianblur class="blur" result="coloredBlur" stddeviation="4"></fegaussianblur>
+        <femerge>
+          <femergenode in="coloredBlur"></femergenode>
+          <femergenode in="SourceGraphic"></femergenode>
+        </femerge>
+      </filter>
+    </defs>
+  </svg>
+
+  <h2>Page Not Found</h2>
+</body>
+
+</html>

go.mod

@@ -1,15 +1,16 @@
 module github.com/yusing/go-proxy
 
-go 1.23.2
+go 1.23.3
 
 require (
 	github.com/coder/websocket v1.8.12
 	github.com/docker/cli v27.3.1+incompatible
 	github.com/docker/docker v27.3.1+incompatible
-	github.com/fsnotify/fsnotify v1.7.0
+	github.com/fsnotify/fsnotify v1.8.0
 	github.com/go-acme/lego/v4 v4.19.2
 	github.com/golang-jwt/jwt/v5 v5.2.1
 	github.com/gotify/server/v2 v2.5.0
+	github.com/prometheus/client_golang v1.20.5
 	github.com/puzpuzpuz/xsync/v3 v3.4.0
 	github.com/rs/zerolog v1.33.0
 	github.com/santhosh-tekuri/jsonschema v1.2.4
@@ -21,8 +22,10 @@ require (
 
 require (
 	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
-	github.com/cloudflare/cloudflare-go v0.108.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cloudflare/cloudflare-go v0.109.0 // indirect
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/distribution/reference v0.6.0 // indirect
 	github.com/docker/go-connections v0.5.0 // indirect
@@ -34,17 +37,21 @@ require (
 	github.com/goccy/go-json v0.10.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
-	github.com/kr/pretty v0.3.1 // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/miekg/dns v1.1.62 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/term v0.5.0 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0 // indirect
 	github.com/ovh/go-ovh v1.6.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.60.1 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/rogpeppe/go-internal v1.13.1 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0 // indirect
@@ -59,6 +66,7 @@ require (
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.26.0 // indirect
 	golang.org/x/tools v0.26.0 // indirect
+	google.golang.org/protobuf v1.35.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gotest.tools/v3 v3.5.1 // indirect
 )

go.sum

@@ -2,16 +2,19 @@ github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOEl
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
-github.com/cloudflare/cloudflare-go v0.108.0 h1:C4Skfjd8I8X3uEOGmQUT4/iGyZcWdkIU7HwvMoLkEE0=
-github.com/cloudflare/cloudflare-go v0.108.0/go.mod h1:m492eNahT/9MsN7Ppnoge8AaI7QhVFtEgVm3I9HJFeU=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cloudflare/cloudflare-go v0.109.0 h1:Wjp+RfJD1lidIFUlrTBqUQnCBrUnmVsLxgzWYiURueg=
+github.com/cloudflare/cloudflare-go v0.109.0/go.mod h1:m492eNahT/9MsN7Ppnoge8AaI7QhVFtEgVm3I9HJFeU=
 github.com/coder/websocket v1.8.12 h1:5bUXkEPPIbewrnkU8LTCLVaxi4N4J8ahufH2vlo4NAo=
 github.com/coder/websocket v1.8.12/go.mod h1:LNVeNrXQZfe5qhS9ALED3uA+l5pPqvwXg3CKoDBB2gs=
 github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
 github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
@@ -28,8 +31,8 @@ github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
-github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
-github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
+github.com/fsnotify/fsnotify v1.8.0 h1:dAwr6QBTBZIkG8roQaJjGof0pp0EeF+tNV7YBP3F/8M=
+github.com/fsnotify/fsnotify v1.8.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
 github.com/go-acme/lego/v4 v4.19.2 h1:Y8hrmMvWETdqzzkRly7m98xtPJJivWFsgWi8fcvZo+Y=
 github.com/go-acme/lego/v4 v4.19.2/go.mod h1:wtDe3dDkmV4/oI2nydpNXSJpvV10J9RCyZ6MbYxNtlQ=
 github.com/go-jose/go-jose/v4 v4.0.4 h1:VsjPI33J0SB9vQM6PLmNjoHqMQNGPiZ0rHL7Ni7Q6/E=
@@ -61,10 +64,14 @@ github.com/jarcoal/httpmock v1.3.0 h1:2RJ8GP0IIaWwcC9Fp2BmVi8Kog3v2Hn7VXM3fTd+nu
 github.com/jarcoal/httpmock v1.3.0/go.mod h1:3yb8rc4BI7TCBhFY8ng0gjuLKJNquuDNiPaZjnENuYg=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
+github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
 github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
@@ -81,21 +88,29 @@ github.com/moby/term v0.5.0 h1:xt8Q1nalod/v7BqbG21f8mQPqH+xAaC9C3N3wfWbVP0=
 github.com/moby/term v0.5.0/go.mod h1:8FzsFHVUBGZdbDsJw/ot+X+d5HLUbvklYLJ9uGfcI3Y=
 github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
 github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
 github.com/opencontainers/image-spec v1.1.0 h1:8SG7/vwALn54lVB/0yZ/MMwhFrPYtpEHQb2IpWsCzug=
 github.com/opencontainers/image-spec v1.1.0/go.mod h1:W4s4sFTMaBeK1BQLXbG4AdM2szdn85PY75RI83NrTrM=
 github.com/ovh/go-ovh v1.6.0 h1:ixLOwxQdzYDx296sXcgS35TOPEahJkpjMGtzPadCjQI=
 github.com/ovh/go-ovh v1.6.0/go.mod h1:cTVDnl94z4tl8pP1uZ/8jlVxntjSIf09bNcQ5TJSC7c=
-github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_golang v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
+github.com/prometheus/client_golang v1.20.5/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.60.1 h1:FUas6GcOw66yB/73KC+BOZoFJmbo/1pojoILArPAaSc=
+github.com/prometheus/common v0.60.1/go.mod h1:h0LYf1R1deLSKtD4Vdg8gy4RuOvENW2J/h19V5NADQw=
+github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
+github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
 github.com/puzpuzpuz/xsync/v3 v3.4.0 h1:DuVBAdXuGFHv8adVXjWWZ63pJq+NRXOWVXlKDBZ+mJ4=
 github.com/puzpuzpuz/xsync/v3 v3.4.0/go.mod h1:VjzYrABPabuM4KyBh1Ftq6u8nhwY5tBPKP9jpmh0nnA=
-github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
 github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
 github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
@@ -181,8 +196,8 @@ google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 h1:
 google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
 google.golang.org/grpc v1.66.1 h1:hO5qAXR19+/Z44hmvIM4dQFMSYX9XcWsByfoxutBpAM=
 google.golang.org/grpc v1.66.1/go.mod h1:s3/l6xSSCURdVfAnL+TqCNMyTDAGN6+lZeVxnZR128Y=
-google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
-google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
+google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA=
+google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

internal/api/handler.go

@@ -1,7 +1,6 @@
 package api
 
 import (
-	"fmt"
 	"net"
 	"net/http"
 
@@ -20,7 +19,7 @@ func NewServeMux() ServeMux {
 }
 
 func (mux ServeMux) HandleFunc(method, endpoint string, handler http.HandlerFunc) {
-	mux.ServeMux.HandleFunc(fmt.Sprintf("%s %s", method, endpoint), checkHost(rateLimited(handler)))
+	mux.ServeMux.HandleFunc(method+" "+endpoint, checkHost(rateLimited(handler)))
 }
 
 func NewHandler() http.Handler {
@@ -55,6 +54,7 @@ func checkHost(f http.HandlerFunc) http.HandlerFunc {
 			http.Error(w, "forbidden", http.StatusForbidden)
 			return
 		}
+		LogInfo(r).Interface("headers", r.Header).Msg("API request")
 		f(w, r)
 	}
 }

internal/api/v1/auth/auth.go

@@ -90,7 +90,7 @@ func LogoutHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func RequireAuth(next http.HandlerFunc) http.HandlerFunc {
-	if common.IsDebugSkipAuth {
+	if common.IsDebugSkipAuth || common.APIJWTSecret == nil {
 		return next
 	}
 

internal/api/v1/stats.go

@@ -10,7 +10,6 @@ import (
 	U "github.com/yusing/go-proxy/internal/api/v1/utils"
 	"github.com/yusing/go-proxy/internal/common"
 	"github.com/yusing/go-proxy/internal/config"
-	"github.com/yusing/go-proxy/internal/server"
 	"github.com/yusing/go-proxy/internal/utils/strutils"
 )
 
@@ -33,7 +32,6 @@ func StatsWS(w http.ResponseWriter, r *http.Request) {
 		}
 		originPats = append(originPats, localAddresses...)
 	}
-	U.LogInfo(r).Msgf("websocket API request from origins: %s", originPats)
 	if common.IsDebug {
 		originPats = []string{"*"}
 	}
@@ -62,9 +60,11 @@ func StatsWS(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+var startTime = time.Now()
+
 func getStats() map[string]any {
 	return map[string]any{
 		"proxies": config.Statistics(),
-		"uptime":  strutils.FormatDuration(server.GetProxyServer().Uptime()),
+		"uptime":  strutils.FormatDuration(time.Since(startTime)),
 	}
 }

internal/common/crypto.go

@@ -23,6 +23,9 @@ func generateJWTKey(size int) string {
 }
 
 func decodeJWTKey(key string) []byte {
+	if key == "" {
+		return nil
+	}
 	bytes, err := base64.StdEncoding.DecodeString(key)
 	if err != nil {
 		log.Panic().Err(err).Msg("failed to decode jwt key")

internal/common/env.go

@@ -12,55 +12,77 @@ import (
 )
 
 var (
-	NoSchemaValidation = GetEnvBool("GOPROXY_NO_SCHEMA_VALIDATION", true)
-	IsTest             = GetEnvBool("GOPROXY_TEST", false) || strings.HasSuffix(os.Args[0], ".test")
-	IsDebug            = GetEnvBool("GOPROXY_DEBUG", IsTest)
-	IsDebugSkipAuth    = GetEnvBool("GOPROXY_DEBUG_SKIP_AUTH", false)
-	IsTrace            = GetEnvBool("GOPROXY_TRACE", false) && IsDebug
+	prefixes = []string{"GODOXY_", "GOPROXY_", ""}
+
+	NoSchemaValidation = GetEnvBool("NO_SCHEMA_VALIDATION", true)
+	IsTest             = GetEnvBool("TEST", false) || strings.HasSuffix(os.Args[0], ".test")
+	IsDebug            = GetEnvBool("DEBUG", IsTest)
+	IsDebugSkipAuth    = GetEnvBool("DEBUG_SKIP_AUTH", false)
+	IsTrace            = GetEnvBool("TRACE", false) && IsDebug
+	IsProduction       = !IsTest && !IsDebug
 
 	ProxyHTTPAddr,
 	ProxyHTTPHost,
 	ProxyHTTPPort,
-	ProxyHTTPURL = GetAddrEnv("GOPROXY_HTTP_ADDR", ":80", "http")
+	ProxyHTTPURL = GetAddrEnv("HTTP_ADDR", ":80", "http")
 
 	ProxyHTTPSAddr,
 	ProxyHTTPSHost,
 	ProxyHTTPSPort,
-	ProxyHTTPSURL = GetAddrEnv("GOPROXY_HTTPS_ADDR", ":443", "https")
+	ProxyHTTPSURL = GetAddrEnv("HTTPS_ADDR", ":443", "https")
 
 	APIHTTPAddr,
 	APIHTTPHost,
 	APIHTTPPort,
-	APIHTTPURL = GetAddrEnv("GOPROXY_API_ADDR", "127.0.0.1:8888", "http")
+	APIHTTPURL = GetAddrEnv("API_ADDR", "127.0.0.1:8888", "http")
 
-	APIJWTSecret    = decodeJWTKey(GetEnv("GOPROXY_API_JWT_SECRET", generateJWTKey(32)))
-	APIJWTTokenTTL  = GetDurationEnv("GOPROXY_API_JWT_TOKEN_TTL", time.Hour)
-	APIUser         = GetEnv("GOPROXY_API_USER", "admin")
-	APIPasswordHash = HashPassword(GetEnv("GOPROXY_API_PASSWORD", "password"))
+	MetricsHTTPAddr,
+	MetricsHTTPHost,
+	MetricsHTTPPort,
+	MetricsHTTPURL = GetAddrEnv("PROMETHEUS_ADDR", "", "http")
+	PrometheusEnabled = MetricsHTTPURL != ""
+
+	APIJWTSecret    = decodeJWTKey(GetEnvString("API_JWT_SECRET", ""))
+	APIJWTTokenTTL  = GetDurationEnv("API_JWT_TOKEN_TTL", time.Hour)
+	APIUser         = GetEnvString("API_USER", "admin")
+	APIPasswordHash = HashPassword(GetEnvString("API_PASSWORD", "password"))
 )
 
-func GetEnvBool(key string, defaultValue bool) bool {
-	value, ok := os.LookupEnv(key)
+func GetEnv[T any](key string, defaultValue T, parser func(string) (T, error)) T {
+	var value string
+	var ok bool
+	for _, prefix := range prefixes {
+		value, ok = os.LookupEnv(prefix + key)
+		if ok && value != "" {
+			break
+		}
+	}
 	if !ok || value == "" {
 		return defaultValue
 	}
-	b, err := strconv.ParseBool(value)
-	if err != nil {
-		log.Fatal().Msgf("env %s: invalid boolean value: %s", key, value)
+	parsed, err := parser(value)
+	if err == nil {
+		return parsed
 	}
-	return b
+	log.Fatal().Err(err).Msgf("env %s: invalid %T value: %s", key, parsed, value)
+	return defaultValue
 }
 
-func GetEnv(key, defaultValue string) string {
-	value, ok := os.LookupEnv(key)
-	if !ok || value == "" {
-		value = defaultValue
-	}
-	return value
+func GetEnvString(key string, defaultValue string) string {
+	return GetEnv(key, defaultValue, func(s string) (string, error) {
+		return s, nil
+	})
+}
+
+func GetEnvBool(key string, defaultValue bool) bool {
+	return GetEnv(key, defaultValue, strconv.ParseBool)
 }
 
 func GetAddrEnv(key, defaultValue, scheme string) (addr, host, port, fullURL string) {
-	addr = GetEnv(key, defaultValue)
+	addr = GetEnvString(key, defaultValue)
+	if addr == "" {
+		return
+	}
 	host, port, err := net.SplitHostPort(addr)
 	if err != nil {
 		log.Fatal().Msgf("env %s: invalid address: %s", key, addr)
@@ -73,13 +95,5 @@ func GetAddrEnv(key, defaultValue, scheme string) (addr, host, port, fullURL str
 }
 
 func GetDurationEnv(key string, defaultValue time.Duration) time.Duration {
-	value, ok := os.LookupEnv(key)
-	if !ok || value == "" {
-		return defaultValue
-	}
-	d, err := time.ParseDuration(value)
-	if err != nil {
-		log.Fatal().Msgf("env %s: invalid duration value: %s", key, value)
-	}
-	return d
+	return GetEnv(key, defaultValue, time.ParseDuration)
 }

internal/config/query.go

@@ -9,7 +9,6 @@ import (
 	"github.com/yusing/go-proxy/internal/proxy/entry"
 	"github.com/yusing/go-proxy/internal/route"
 	proxy "github.com/yusing/go-proxy/internal/route/provider"
-	F "github.com/yusing/go-proxy/internal/utils/functional"
 	"github.com/yusing/go-proxy/internal/utils/strutils"
 )
 
@@ -69,6 +68,20 @@ func HomepageConfig() homepage.Config {
 			)
 		}
 
+		if instance.value.Homepage.UseDefaultCategories {
+			if en.Container != nil && item.Category == "" {
+				if category, ok := homepage.PredefinedCategories[en.Container.ImageName]; ok {
+					item.Category = category
+				}
+			}
+
+			if item.Category == "" {
+				if category, ok := homepage.PredefinedCategories[strings.ToLower(alias)]; ok {
+					item.Category = category
+				}
+			}
+		}
+
 		switch {
 		case entry.IsDocker(r):
 			if item.Category == "" {
@@ -125,13 +138,12 @@ func Statistics() map[string]any {
 	providerStats := make(map[string]proxy.ProviderStats)
 
 	instance.providers.RangeAll(func(name string, p *proxy.Provider) {
-		providerStats[name] = p.Statistics()
-	})
+		stats := p.Statistics()
+		providerStats[name] = stats
 
-	for _, stats := range providerStats {
 		nTotalRPs += stats.NumRPs
 		nTotalStreams += stats.NumStreams
-	}
+	})
 
 	return map[string]any{
 		"num_total_streams":         nTotalStreams,
@@ -139,14 +151,3 @@ func Statistics() map[string]any {
 		"providers":                 providerStats,
 	}
 }
-
-func FindRoute(alias string) *route.Route {
-	return F.MapFind(instance.providers,
-		func(p *proxy.Provider) (*route.Route, bool) {
-			if route, ok := p.GetRoute(alias); ok {
-				return route, true
-			}
-			return nil, false
-		},
-	)
-}

internal/config/types/config.go

@@ -6,6 +6,7 @@ type (
 		AutoCert        AutoCertConfig `json:"autocert" yaml:",flow"`
 		ExplicitOnly    bool           `json:"explicit_only" yaml:"explicit_only"`
 		MatchDomains    []string       `json:"match_domains" yaml:"match_domains"`
+		Homepage        HomepageConfig `json:"homepage" yaml:"homepage"`
 		TimeoutShutdown int            `json:"timeout_shutdown" yaml:"timeout_shutdown"`
 		RedirectToHTTPS bool           `json:"redirect_to_https" yaml:"redirect_to_https"`
 	}
@@ -18,8 +19,10 @@ type (
 
 func DefaultConfig() *Config {
 	return &Config{
-		Providers:       Providers{},
 		TimeoutShutdown: 3,
+		Homepage: HomepageConfig{
+			UseDefaultCategories: true,
+		},
 		RedirectToHTTPS: false,
 	}
 }

internal/config/types/homepage_config.go

@@ -0,0 +1,5 @@
+package types
+
+type HomepageConfig struct {
+	UseDefaultCategories bool `json:"use_default_categories" yaml:"use_default_categories"`
+}

internal/docker/container.go

@@ -20,7 +20,7 @@ type (
 		ContainerID   string `json:"container_id" yaml:"-"`
 		ImageName     string `json:"image_name" yaml:"-"`
 
-		Labels map[string]string `json:"labels" yaml:"-"`
+		Labels map[string]string `json:"-" yaml:"-"`
 
 		PublicPortMapping  PortMapping `json:"public_ports" yaml:"-"`  // non-zero publicPort:types.Port
 		PrivatePortMapping PortMapping `json:"private_ports" yaml:"-"` // privatePort:types.Port

internal/docker/idlewatcher/types/waker.go

@@ -11,4 +11,5 @@ type Waker interface {
 	health.HealthMonitor
 	http.Handler
 	net.Stream
+	Wake() error
 }

internal/docker/idlewatcher/waker.go

@@ -4,8 +4,11 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/yusing/go-proxy/internal/common"
 	. "github.com/yusing/go-proxy/internal/docker/idlewatcher/types"
 	E "github.com/yusing/go-proxy/internal/error"
+	"github.com/yusing/go-proxy/internal/metrics"
 	gphttp "github.com/yusing/go-proxy/internal/net/http"
 	net "github.com/yusing/go-proxy/internal/net/types"
 	"github.com/yusing/go-proxy/internal/proxy/entry"
@@ -20,6 +23,7 @@ type waker struct {
 	rp     *gphttp.ReverseProxy
 	stream net.Stream
 	hc     health.HealthChecker
+	metric *metrics.Gauge
 
 	ready atomic.Bool
 }
@@ -53,6 +57,13 @@ func newWaker(providerSubTask task.Task, entry entry.Entry, rp *gphttp.ReversePr
 	default:
 		panic("both nil")
 	}
+
+	if common.PrometheusEnabled {
+		m := metrics.GetServiceMetrics()
+		fqn := providerSubTask.Parent().Name() + "/" + entry.TargetName()
+		waker.metric = m.HealthStatus.With(metrics.HealthMetricLabels(fqn))
+		waker.metric.Set(float64(watcher.Status()))
+	}
 	return watcher, nil
 }
 
@@ -68,8 +79,11 @@ func NewStreamWaker(providerSubTask task.Task, entry entry.Entry, stream net.Str
 // Start implements health.HealthMonitor.
 func (w *Watcher) Start(routeSubTask task.Task) E.Error {
 	routeSubTask.Finish("ignored")
-	w.task.OnCancel("stop route", func() {
+	w.task.OnCancel("stop route and cleanup", func() {
 		routeSubTask.Parent().Finish(w.task.FinishCause())
+		if w.metric != nil {
+			prometheus.Unregister(w.metric)
+		}
 	})
 	return nil
 }
@@ -96,8 +110,16 @@ func (w *Watcher) Uptime() time.Duration {
 	return 0
 }
 
-// Status implements health.HealthMonitor.
 func (w *Watcher) Status() health.Status {
+	status := w.getStatusUpdateReady()
+	if w.metric != nil {
+		w.metric.Set(float64(status))
+	}
+	return status
+}
+
+// Status implements health.HealthMonitor.
+func (w *Watcher) getStatusUpdateReady() health.Status {
 	if !w.ContainerRunning {
 		return health.StatusNapping
 	}

internal/docker/idlewatcher/watcher.go

@@ -98,6 +98,10 @@ func registerWatcher(providerSubtask task.Task, entry entry.Entry, waker *waker)
 	return w, nil
 }
 
+func (w *Watcher) Wake() error {
+	return w.wakeIfStopped()
+}
+
 // WakeDebug logs a debug message related to waking the container.
 func (w *Watcher) WakeDebug() *zerolog.Event {
 	return w.Debug().Str("action", "wake")

internal/homepage/categories.go

@@ -0,0 +1,64 @@
+package homepage
+
+// PredefinedCategories by alias or docker image name
+var PredefinedCategories = map[string]string{
+	"sonarr":       "Torrenting",
+	"radarr":       "Torrenting",
+	"bazarr":       "Torrenting",
+	"lidarr":       "Torrenting",
+	"readarr":      "Torrenting",
+	"prowlarr":     "Torrenting",
+	"watcharr":     "Torrenting",
+	"qbittorrent":  "Torrenting",
+	"qbit":         "Torrenting",
+	"qbt":          "Torrenting",
+	"transmission": "Torrenting",
+
+	"jellyfin":   "Media",
+	"jellyseerr": "Media",
+	"emby":       "Media",
+	"plex":       "Media",
+	"navidrome":  "Media",
+	"immich":     "Media",
+	"tautulli":   "Media",
+	"nextcloud":  "Media",
+	"invidious":  "Media",
+
+	"uptime":             "Monitoring",
+	"uptime-kuma":        "Monitoring",
+	"prometheus":         "Monitoring",
+	"grafana":            "Monitoring",
+	"netdata":            "Monitoring",
+	"changedetection.io": "Monitoring",
+	"changedetection":    "Monitoring",
+	"influxdb":           "Monitoring",
+	"influx":             "Monitoring",
+	"dozzle":             "Monitoring",
+
+	"adguardhome":  "Networking",
+	"adgh":         "Networking",
+	"adg":          "Networking",
+	"pihole":       "Networking",
+	"flaresolverr": "Networking",
+
+	"homebridge":     "Home Automation",
+	"home-assistant": "Home Automation",
+
+	"dockge":       "Container Management",
+	"portainer-ce": "Container Management",
+	"portainer-be": "Container Management",
+
+	"rss":        "RSS",
+	"rsshub":     "RSS",
+	"rss-bridge": "RSS",
+	"miniflux":   "RSS",
+	"freshrss":   "RSS",
+
+	"paperless":     "Documents",
+	"paperless-ngx": "Documents",
+	"s-pdf":         "Documents",
+
+	"minio":       "Storage",
+	"filebrowser": "Storage",
+	"rclone":      "Storage",
+}

internal/logging/logging.go

@@ -51,7 +51,7 @@ func init() {
 	).Level(level).With().Timestamp().Logger()
 }
 
-func DiscardLogger() { logger = zerolog.Nop() }
+func DiscardLogger() { zerolog.SetGlobalLevel(zerolog.Disabled) }
 
 func AddHook(h zerolog.Hook) { logger = logger.Hook(h) }
 

internal/metrics/http_handler.go

@@ -0,0 +1,13 @@
+package metrics
+
+import (
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+func NewHandler() http.Handler {
+	mux := http.NewServeMux()
+	mux.Handle("/metrics", promhttp.Handler())
+	return mux
+}

internal/metrics/labels.go

@@ -0,0 +1,36 @@
+package metrics
+
+import "github.com/prometheus/client_golang/prometheus"
+
+type (
+	HTTPRouteMetricLabels struct {
+		Service, Method, Host, Visitor, Path string
+	}
+	StreamRouteMetricLabels struct {
+		Service, Visitor string
+	}
+	HealthMetricLabels string
+)
+
+func (lbl *HTTPRouteMetricLabels) toPromLabels() prometheus.Labels {
+	return prometheus.Labels{
+		"service": lbl.Service,
+		"method":  lbl.Method,
+		"host":    lbl.Host,
+		"visitor": lbl.Visitor,
+		"path":    lbl.Path,
+	}
+}
+
+func (lbl *StreamRouteMetricLabels) toPromLabels() prometheus.Labels {
+	return prometheus.Labels{
+		"service": lbl.Service,
+		"visitor": lbl.Visitor,
+	}
+}
+
+func (lbl HealthMetricLabels) toPromLabels() prometheus.Labels {
+	return prometheus.Labels{
+		"service": string(lbl),
+	}
+}

internal/metrics/metric.go

@@ -0,0 +1,73 @@
+package metrics
+
+import "github.com/prometheus/client_golang/prometheus"
+
+type (
+	Counter struct {
+		mv        *prometheus.CounterVec
+		collector prometheus.Counter
+	}
+	Gauge struct {
+		mv        *prometheus.GaugeVec
+		collector prometheus.Gauge
+	}
+	Labels interface {
+		toPromLabels() prometheus.Labels
+	}
+)
+
+func NewCounter(opts prometheus.CounterOpts, labels ...string) *Counter {
+	m := &Counter{
+		mv: prometheus.NewCounterVec(opts, labels),
+	}
+	if len(labels) == 0 {
+		m.collector = m.mv.WithLabelValues()
+		m.collector.Add(0)
+	}
+	prometheus.MustRegister(m)
+	return m
+}
+
+func NewGauge(opts prometheus.GaugeOpts, labels ...string) *Gauge {
+	m := &Gauge{
+		mv: prometheus.NewGaugeVec(opts, labels),
+	}
+	if len(labels) == 0 {
+		m.collector = m.mv.WithLabelValues()
+		m.collector.Set(0)
+	}
+	prometheus.MustRegister(m)
+	return m
+}
+
+func (c *Counter) Collect(ch chan<- prometheus.Metric) {
+	c.mv.Collect(ch)
+}
+
+func (c *Counter) Describe(ch chan<- *prometheus.Desc) {
+	c.mv.Describe(ch)
+}
+
+func (c *Counter) Inc() {
+	c.collector.Inc()
+}
+
+func (c *Counter) With(l Labels) *Counter {
+	return &Counter{mv: c.mv, collector: c.mv.With(l.toPromLabels())}
+}
+
+func (g *Gauge) Collect(ch chan<- prometheus.Metric) {
+	g.mv.Collect(ch)
+}
+
+func (g *Gauge) Describe(ch chan<- *prometheus.Desc) {
+	g.mv.Describe(ch)
+}
+
+func (g *Gauge) Set(v float64) {
+	g.collector.Set(v)
+}
+
+func (g *Gauge) With(l Labels) *Gauge {
+	return &Gauge{mv: g.mv, collector: g.mv.With(l.toPromLabels())}
+}

internal/metrics/metrics.go

@@ -0,0 +1,105 @@
+package metrics
+
+import (
+	"strings"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/yusing/go-proxy/internal/common"
+)
+
+type (
+	RouteMetrics struct {
+		HTTPReqTotal,
+		HTTP2xx3xx,
+		HTTP4xx,
+		HTTP5xx *Counter
+		HTTPReqElapsed *Gauge
+	}
+
+	ServiceMetrics struct {
+		HealthStatus *Gauge
+	}
+)
+
+var (
+	rm RouteMetrics
+	sm ServiceMetrics
+)
+
+const (
+	routerNamespace     = "router"
+	routerHTTPSubsystem = "http"
+
+	serviceNamespace = "service"
+)
+
+func GetRouteMetrics() *RouteMetrics {
+	return &rm
+}
+
+func GetServiceMetrics() *ServiceMetrics {
+	return &sm
+}
+
+func (rm *RouteMetrics) UnregisterService(service string) {
+	lbls := &HTTPRouteMetricLabels{Service: service}
+	prometheus.Unregister(rm.HTTP2xx3xx.With(lbls))
+	prometheus.Unregister(rm.HTTP4xx.With(lbls))
+	prometheus.Unregister(rm.HTTP5xx.With(lbls))
+	prometheus.Unregister(rm.HTTPReqElapsed.With(lbls))
+}
+
+func init() {
+	if !common.PrometheusEnabled {
+		return
+	}
+	initRouteMetrics()
+	initServiceMetrics()
+}
+
+func initRouteMetrics() {
+	lbls := []string{"service", "method", "host", "visitor", "path"}
+	partitionsHelp := ", partitioned by " + strings.Join(lbls, ", ")
+	rm = RouteMetrics{
+		HTTPReqTotal: NewCounter(prometheus.CounterOpts{
+			Namespace: routerNamespace,
+			Subsystem: routerHTTPSubsystem,
+			Name:      "req_total",
+			Help:      "How many requests processed" + partitionsHelp,
+		}),
+		HTTP2xx3xx: NewCounter(prometheus.CounterOpts{
+			Namespace: routerNamespace,
+			Subsystem: routerHTTPSubsystem,
+			Name:      "req_ok_count",
+			Help:      "How many 2xx-3xx requests processed" + partitionsHelp,
+		}, lbls...),
+		HTTP4xx: NewCounter(prometheus.CounterOpts{
+			Namespace: routerNamespace,
+			Subsystem: routerHTTPSubsystem,
+			Name:      "req_4xx_count",
+			Help:      "How many 4xx requests processed" + partitionsHelp,
+		}, lbls...),
+		HTTP5xx: NewCounter(prometheus.CounterOpts{
+			Namespace: routerNamespace,
+			Subsystem: routerHTTPSubsystem,
+			Name:      "req_5xx_count",
+			Help:      "How many 5xx requests processed" + partitionsHelp,
+		}, lbls...),
+		HTTPReqElapsed: NewGauge(prometheus.GaugeOpts{
+			Namespace: routerNamespace,
+			Subsystem: routerHTTPSubsystem,
+			Name:      "req_elapsed_ms",
+			Help:      "How long it took to process the request and respond a status code" + partitionsHelp,
+		}, lbls...),
+	}
+}
+
+func initServiceMetrics() {
+	sm = ServiceMetrics{
+		HealthStatus: NewGauge(prometheus.GaugeOpts{
+			Namespace: serviceNamespace,
+			Name:      "health_status",
+			Help:      "The health status of the router by service",
+		}, "service"),
+	}
+}

internal/metrics/router_metrics.go

@@ -0,0 +1,26 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/yusing/go-proxy/internal/common"
+)
+
+func InitRouterMetrics(getRPsCount func() int, getStreamsCount func() int) {
+	if !common.PrometheusEnabled {
+		return
+	}
+	prometheus.MustRegister(prometheus.NewGaugeFunc(prometheus.GaugeOpts{
+		Namespace: "entrypoint",
+		Name:      "num_reverse_proxies",
+		Help:      "The number of reverse proxies",
+	}, func() float64 {
+		return float64(getRPsCount())
+	}))
+	prometheus.MustRegister(prometheus.NewGaugeFunc(prometheus.GaugeOpts{
+		Namespace: "entrypoint",
+		Name:      "num_streams",
+		Help:      "The number of streams",
+	}, func() float64 {
+		return float64(getStreamsCount())
+	}))
+}

internal/net/http/dummy_response_writer.go

@@ -1,15 +0,0 @@
-package http
-
-import "net/http"
-
-type DummyResponseWriter struct{}
-
-func (w DummyResponseWriter) Header() http.Header {
-	return make(http.Header)
-}
-
-func (w DummyResponseWriter) Write([]byte) (_ int, _ error) {
-	return
-}
-
-func (w DummyResponseWriter) WriteHeader(int) {}

internal/net/http/loadbalancer/loadbalancer.go

@@ -1,7 +1,6 @@
 package loadbalancer
 
 import (
-	"context"
 	"net/http"
 	"sync"
 	"time"
@@ -10,7 +9,6 @@ import (
 	"github.com/yusing/go-proxy/internal/common"
 	idlewatcher "github.com/yusing/go-proxy/internal/docker/idlewatcher/types"
 	E "github.com/yusing/go-proxy/internal/error"
-	gphttp "github.com/yusing/go-proxy/internal/net/http"
 	"github.com/yusing/go-proxy/internal/net/http/middleware"
 	"github.com/yusing/go-proxy/internal/task"
 	"github.com/yusing/go-proxy/internal/watcher/health"
@@ -225,18 +223,15 @@ func (lb *LoadBalancer) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if r.Header.Get(common.HeaderCheckRedirect) != "" {
-		ctx, cancel := context.WithTimeout(r.Context(), 1*time.Second)
-		defer cancel()
-		// send dummy request to wake all servers
-		var dummyRW gphttp.DummyResponseWriter
+		// wake all servers
 		for _, srv := range srvs {
 			// wake only if server implements Waker
-			_, ok := srv.handler.(idlewatcher.Waker)
-			if !ok {
-				continue
+			waker, ok := srv.handler.(idlewatcher.Waker)
+			if ok {
+				if err := waker.Wake(); err != nil {
+					lb.Err(err).Msgf("failed to wake server %s", srv.Name)
+				}
 			}
-			wakeReq := r.Clone(ctx)
-			srv.ServeHTTP(dummyRW, wakeReq)
 		}
 	}
 	lb.impl.ServeHTTP(srvs, rw, r)

internal/net/http/middleware/cidr_whitelist.go

@@ -11,15 +11,14 @@ import (
 
 type cidrWhitelist struct {
 	cidrWhitelistOpts
-	m *Middleware
+	m          *Middleware
+	cachedAddr F.Map[string, bool] // cache for trusted IPs
 }
 
 type cidrWhitelistOpts struct {
 	Allow      []*types.CIDR `json:"allow"`
 	StatusCode int           `json:"statusCode"`
 	Message    string        `json:"message"`
-
-	cachedAddr F.Map[string, bool] // cache for trusted IPs
 }
 
 var (
@@ -28,7 +27,6 @@ var (
 		Allow:      []*types.CIDR{},
 		StatusCode: http.StatusForbidden,
 		Message:    "IP not allowed",
-		cachedAddr: F.NewMapOf[string, bool](),
 	}
 )
 
@@ -39,6 +37,7 @@ func NewCIDRWhitelist(opts OptionsRaw) (*Middleware, E.Error) {
 		before: wl.checkIP,
 	}
 	wl.cidrWhitelistOpts = cidrWhitelistDefaults
+	wl.cachedAddr = F.NewMapOf[string, bool]()
 	err := Deserialize(opts, &wl.cidrWhitelistOpts)
 	if err != nil {
 		return nil, err

internal/net/http/middleware/middleware.go

@@ -2,7 +2,6 @@ package middleware
 
 import (
 	"encoding/json"
-	"errors"
 	"net/http"
 
 	"github.com/rs/zerolog"
@@ -157,8 +156,8 @@ func patchReverseProxy(rpName string, rp *ReverseProxy, middlewares []*Middlewar
 	mid := BuildMiddlewareFromChain(rpName, middlewares)
 
 	if mid.before != nil {
-		ori := rp.ServeHTTP
-		rp.ServeHTTP = func(w http.ResponseWriter, r *http.Request) {
+		ori := rp.HandlerFunc
+		rp.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
 			mid.before(ori, w, r)
 		}
 	}
@@ -167,7 +166,10 @@ func patchReverseProxy(rpName string, rp *ReverseProxy, middlewares []*Middlewar
 		if rp.ModifyResponse != nil {
 			ori := rp.ModifyResponse
 			rp.ModifyResponse = func(res *http.Response) error {
-				return errors.Join(mid.modifyResponse(res), ori(res))
+				if err := mid.modifyResponse(res); err != nil {
+					return err
+				}
+				return ori(res)
 			}
 		} else {
 			rp.ModifyResponse = mid.modifyResponse

internal/net/http/middleware/modify_request.go

@@ -1,6 +1,8 @@
 package middleware
 
 import (
+	"net/http"
+
 	"github.com/yusing/go-proxy/internal/common"
 	E "github.com/yusing/go-proxy/internal/error"
 )
@@ -22,11 +24,9 @@ var ModifyRequest = &Middleware{withOptions: NewModifyRequest}
 
 func NewModifyRequest(optsRaw OptionsRaw) (*Middleware, E.Error) {
 	mr := new(modifyRequest)
-	var mrFunc RewriteFunc
+	mrFunc := mr.modifyRequest
 	if common.IsDebug {
 		mrFunc = mr.modifyRequestWithTrace
-	} else {
-		mrFunc = mr.modifyRequest
 	}
 	mr.m = &Middleware{
 		impl:   mr,
@@ -41,6 +41,9 @@ func NewModifyRequest(optsRaw OptionsRaw) (*Middleware, E.Error) {
 
 func (mr *modifyRequest) modifyRequest(req *Request) {
 	for k, v := range mr.SetHeaders {
+		if http.CanonicalHeaderKey(k) == "Host" {
+			req.Host = v
+		}
 		req.Header.Set(k, v)
 	}
 	for k, v := range mr.AddHeaders {

internal/net/http/middleware/modify_request_test.go

@@ -9,7 +9,10 @@ import (
 
 func TestSetModifyRequest(t *testing.T) {
 	opts := OptionsRaw{
-		"set_headers":  map[string]string{"User-Agent": "go-proxy/v0.5.0"},
+		"set_headers": map[string]string{
+			"User-Agent": "go-proxy/v0.5.0",
+			"Host":       "test.example.com",
+		},
 		"add_headers":  map[string]string{"Accept-Encoding": "test-value"},
 		"hide_headers": []string{"Accept"},
 	}
@@ -28,6 +31,7 @@ func TestSetModifyRequest(t *testing.T) {
 		})
 		ExpectNoError(t, err)
 		ExpectEqual(t, result.RequestHeaders.Get("User-Agent"), "go-proxy/v0.5.0")
+		ExpectEqual(t, result.RequestHeaders.Get("Host"), "test.example.com")
 		ExpectTrue(t, slices.Contains(result.RequestHeaders.Values("Accept-Encoding"), "test-value"))
 		ExpectEqual(t, result.RequestHeaders.Get("Accept"), "")
 	})

internal/net/http/middleware/x_forwarded.go

@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"net"
+	"strings"
 )
 
 const (
@@ -15,10 +16,7 @@ const (
 
 var SetXForwarded = &Middleware{
 	before: Rewrite(func(req *Request) {
-		req.Header.Del("Forwarded")
-		req.Header.Del(xForwardedFor)
-		req.Header.Del(xForwardedHost)
-		req.Header.Del(xForwardedProto)
+		delXForwarded(req)
 		clientIP, _, err := net.SplitHostPort(req.RemoteAddr)
 		if err == nil {
 			req.Header.Set(xForwardedFor, clientIP)
@@ -35,10 +33,18 @@ var SetXForwarded = &Middleware{
 }
 
 var HideXForwarded = &Middleware{
-	before: Rewrite(func(req *Request) {
-		req.Header.Del("Forwarded")
-		req.Header.Del(xForwardedFor)
-		req.Header.Del(xForwardedHost)
-		req.Header.Del(xForwardedProto)
-	}),
+	before: Rewrite(delXForwarded),
+}
+
+func delXForwarded(req *Request) {
+	req.Header.Del("Forwarded")
+	toRemove := make([]string, 0)
+	for k := range req.Header {
+		if strings.HasPrefix(k, "X-Forwarded-") {
+			toRemove = append(toRemove, k)
+		}
+	}
+	for _, k := range toRemove {
+		req.Header.Del(k)
+	}
 }

internal/net/http/reverse_proxy_mod.go

@@ -22,8 +22,11 @@ import (
 	"net/url"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/rs/zerolog"
+	"github.com/yusing/go-proxy/internal/common"
+	"github.com/yusing/go-proxy/internal/metrics"
 	"github.com/yusing/go-proxy/internal/net/types"
 	U "github.com/yusing/go-proxy/internal/utils"
 	"golang.org/x/net/http/httpguts"
@@ -86,12 +89,43 @@ type ReverseProxy struct {
 	// implementation is used.
 	ModifyResponse func(*http.Response) error
 
-	ServeHTTP http.HandlerFunc
+	HandlerFunc http.HandlerFunc
 
 	TargetName string
 	TargetURL  types.URL
 }
 
+type httpMetricLogger struct {
+	http.ResponseWriter
+	timestamp time.Time
+	labels    *metrics.HTTPRouteMetricLabels
+}
+
+// WriteHeader implements http.ResponseWriter.
+func (l *httpMetricLogger) WriteHeader(status int) {
+	l.ResponseWriter.WriteHeader(status)
+	duration := time.Since(l.timestamp)
+	go func() {
+		m := metrics.GetRouteMetrics()
+		m.HTTPReqTotal.Inc()
+		m.HTTPReqElapsed.With(l.labels).Set(float64(duration.Milliseconds()))
+
+		// ignore 1xx
+		switch {
+		case status >= 500:
+			m.HTTP5xx.With(l.labels).Inc()
+		case status >= 400:
+			m.HTTP4xx.With(l.labels).Inc()
+		case status >= 200:
+			m.HTTP2xx3xx.With(l.labels).Inc()
+		}
+	}()
+}
+
+func (l *httpMetricLogger) Unwrap() http.ResponseWriter {
+	return l.ResponseWriter
+}
+
 func singleJoiningSlash(a, b string) string {
 	aslash := strings.HasSuffix(a, "/")
 	bslash := strings.HasPrefix(b, "/")
@@ -157,10 +191,14 @@ func NewReverseProxy(name string, target types.URL, transport http.RoundTripper)
 		TargetName: name,
 		TargetURL:  target,
 	}
-	rp.ServeHTTP = rp.serveHTTP
+	rp.HandlerFunc = rp.handler
 	return rp
 }
 
+func (p *ReverseProxy) UnregisterMetrics() {
+	metrics.GetRouteMetrics().UnregisterService(p.TargetName)
+}
+
 func rewriteRequestURL(req *http.Request, target *url.URL) {
 	targetQuery := target.RawQuery
 	req.URL.Scheme = target.Scheme
@@ -225,9 +263,41 @@ func (p *ReverseProxy) modifyResponse(rw http.ResponseWriter, res *http.Response
 	return true
 }
 
-func (p *ReverseProxy) serveHTTP(rw http.ResponseWriter, req *http.Request) {
-	if _, ok := rw.(DummyResponseWriter); ok {
-		return
+func (p *ReverseProxy) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	p.HandlerFunc(rw, req)
+}
+
+func (p *ReverseProxy) handler(rw http.ResponseWriter, req *http.Request) {
+	if common.PrometheusEnabled {
+		t := time.Now()
+		var visitor string
+		if realIPs := req.Header.Values("X-Real-IP"); len(realIPs) > 0 {
+			visitor = realIPs[len(realIPs)-1]
+		}
+		if visitor == "" {
+			if fwdIPs := req.Header.Values("X-Forwarded-For"); len(fwdIPs) > 0 {
+				visitor = fwdIPs[len(fwdIPs)-1]
+			}
+		}
+		if visitor == "" {
+			var err error
+			visitor, _, err = net.SplitHostPort(req.RemoteAddr)
+			if err != nil {
+				visitor = req.RemoteAddr
+			}
+		}
+		lbls := &metrics.HTTPRouteMetricLabels{
+			Service: p.TargetName,
+			Method:  req.Method,
+			Host:    req.Host,
+			Visitor: visitor,
+			Path:    req.URL.Path,
+		}
+		rw = &httpMetricLogger{
+			ResponseWriter: rw,
+			timestamp:      t,
+			labels:         lbls,
+		}
 	}
 
 	transport := p.Transport
@@ -367,7 +437,7 @@ func (p *ReverseProxy) serveHTTP(rw http.ResponseWriter, req *http.Request) {
 			Proto:      outreq.Proto,
 			ProtoMajor: outreq.ProtoMajor,
 			ProtoMinor: outreq.ProtoMinor,
-			Header:     make(http.Header),
+			Header:     http.Header{},
 			Body:       io.NopCloser(bytes.NewReader([]byte("Origin server is not reachable."))),
 			Request:    outreq,
 			TLS:        outreq.TLS,

internal/route/http.go

@@ -8,6 +8,7 @@ import (
 	"sync"
 
 	"github.com/rs/zerolog"
+	"github.com/yusing/go-proxy/internal/common"
 	"github.com/yusing/go-proxy/internal/docker/idlewatcher"
 	E "github.com/yusing/go-proxy/internal/error"
 	gphttp "github.com/yusing/go-proxy/internal/net/http"
@@ -38,10 +39,6 @@ type (
 	}
 
 	SubdomainKey = PT.Alias
-
-	ReverseProxyHandler struct {
-		*gphttp.ReverseProxy
-	}
 )
 
 var (
@@ -52,10 +49,6 @@ var (
 	// globalMux    = http.NewServeMux() // TODO: support regex subdomain matching.
 )
 
-func (rp ReverseProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	rp.ReverseProxy.ServeHTTP(w, r)
-}
-
 func GetReverseProxies() F.Map[string, *HTTPRoute] {
 	return httpRoutes
 }
@@ -77,10 +70,11 @@ func NewHTTPRoute(entry *entry.ReverseProxyEntry) (impl, E.Error) {
 		trans = gphttp.DefaultTransport.Clone()
 	}
 
-	rp := gphttp.NewReverseProxy(string(entry.Alias), entry.URL, trans)
+	service := string(entry.Alias)
+	rp := gphttp.NewReverseProxy(service, entry.URL, trans)
 
 	if len(entry.Middlewares) > 0 {
-		err := middleware.PatchReverseProxy(string(entry.Alias), rp, entry.Middlewares)
+		err := middleware.PatchReverseProxy(service, rp, entry.Middlewares)
 		if err != nil {
 			return nil, err
 		}
@@ -136,11 +130,11 @@ func (r *HTTPRoute) Start(providerSubtask task.Task) E.Error {
 	if r.handler == nil {
 		switch {
 		case len(r.PathPatterns) == 1 && r.PathPatterns[0] == "/":
-			r.handler = ReverseProxyHandler{r.rp}
+			r.handler = r.rp
 		default:
 			mux := http.NewServeMux()
 			for _, p := range r.PathPatterns {
-				mux.HandleFunc(string(p), r.rp.ServeHTTP)
+				mux.HandleFunc(string(p), r.rp.HandlerFunc)
 			}
 			r.handler = mux
 		}
@@ -163,6 +157,9 @@ func (r *HTTPRoute) Start(providerSubtask task.Task) E.Error {
 		})
 	}
 
+	if common.PrometheusEnabled {
+		r.task.OnFinished("unreg metrics", r.rp.UnregisterMetrics)
+	}
 	return nil
 }
 

internal/route/metrics.go

@@ -0,0 +1,7 @@
+package route
+
+import "github.com/yusing/go-proxy/internal/metrics"
+
+func init() {
+	metrics.InitRouterMetrics(httpRoutes.Size, streamRoutes.Size)
+}

internal/route/provider/docker.go

@@ -31,7 +31,7 @@ var (
 
 func DockerProviderImpl(name, dockerHost string, explicitOnly bool) (ProviderImpl, error) {
 	if dockerHost == common.DockerHostFromEnv {
-		dockerHost = common.GetEnv("DOCKER_HOST", client.DefaultDockerHost)
+		dockerHost = common.GetEnvString("DOCKER_HOST", client.DefaultDockerHost)
 	}
 	return &DockerProvider{
 		name,

internal/server/instance.go

@@ -1,25 +0,0 @@
-package server
-
-var proxyServer, apiServer *Server
-
-func InitProxyServer(opt Options) *Server {
-	if proxyServer == nil {
-		proxyServer = NewServer(opt)
-	}
-	return proxyServer
-}
-
-func InitAPIServer(opt Options) *Server {
-	if apiServer == nil {
-		apiServer = NewServer(opt)
-	}
-	return apiServer
-}
-
-func GetProxyServer() *Server {
-	return proxyServer
-}
-
-func GetAPIServer() *Server {
-	return apiServer
-}

internal/server/server.go

@@ -38,6 +38,12 @@ type Options struct {
 	Handler         http.Handler
 }
 
+func StartServer(opt Options) (s *Server) {
+	s = NewServer(opt)
+	s.Start()
+	return s
+}
+
 func NewServer(opt Options) (s *Server) {
 	var httpSer, httpsSer *http.Server
 	var httpHandler http.Handler

internal/setup.go

@@ -12,7 +12,7 @@ import (
 )
 
 var (
-	branch          = common.GetEnv("GOPROXY_BRANCH", "v0.7")
+	branch          = common.GetEnvString("BRANCH", "v0.7")
 	baseURL         = "https://github.com/yusing/go-proxy/raw/" + branch
 	requiredConfigs = []Config{
 		{common.ConfigBasePath, true, false, ""},

internal/watcher/events/event_queue.go

@@ -50,8 +50,25 @@ func NewEventQueue(parent task.Task, flushInterval time.Duration, onFlush OnFlus
 }
 
 func (e *EventQueue) Start(eventCh <-chan Event, errCh <-chan E.Error) {
+	if common.IsProduction {
+		origOnFlush := e.onFlush
+		// recover panic in onFlush when in production mode
+		e.onFlush = func(flushTask task.Task, events []Event) {
+			defer func() {
+				if err := recover(); err != nil {
+					e.onError(E.New("recovered panic in onFlush").
+						Withf("%v", err).
+						Subject(e.task.Parent().String()))
+				}
+			}()
+			origOnFlush(flushTask, events)
+		}
+	}
+
 	go func() {
 		defer e.ticker.Stop()
+		defer e.task.Finish(nil)
+
 		for {
 			select {
 			case <-e.task.Context().Done():
@@ -61,18 +78,7 @@ func (e *EventQueue) Start(eventCh <-chan Event, errCh <-chan E.Error) {
 					flushTask := e.task.Subtask("flush events")
 					queue := e.queue
 					e.queue = make([]Event, 0, eventQueueCapacity)
-					if !common.IsDebug {
-						go func() {
-							defer func() {
-								if err := recover(); err != nil {
-									e.onError(E.Errorf("recovered panic in onFlush: %v", err).Subject(e.task.Parent().String()))
-								}
-							}()
-							e.onFlush(flushTask, queue)
-						}()
-					} else {
-						go e.onFlush(flushTask, queue)
-					}
+					go e.onFlush(flushTask, queue)
 					flushTask.Wait()
 				}
 				e.ticker.Reset(e.flushInterval)

internal/watcher/health/monitor.go

@@ -7,8 +7,11 @@ import (
 	"strings"
 	"time"
 
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/yusing/go-proxy/internal/common"
 	E "github.com/yusing/go-proxy/internal/error"
 	"github.com/yusing/go-proxy/internal/logging"
+	"github.com/yusing/go-proxy/internal/metrics"
 	"github.com/yusing/go-proxy/internal/net/types"
 	"github.com/yusing/go-proxy/internal/notif"
 	"github.com/yusing/go-proxy/internal/task"
@@ -26,6 +29,8 @@ type (
 		checkHealth HealthCheckFunc
 		startTime   time.Time
 
+		metric *metrics.Gauge
+
 		task task.Task
 	}
 )
@@ -59,6 +64,10 @@ func (mon *monitor) Start(routeSubtask task.Task) E.Error {
 		return E.From(ErrNegativeInterval)
 	}
 
+	if common.PrometheusEnabled {
+		mon.metric = metrics.GetServiceMetrics().HealthStatus.With(metrics.HealthMetricLabels(mon.service))
+	}
+
 	go func() {
 		logger := logging.With().Str("name", mon.service).Logger()
 
@@ -67,6 +76,9 @@ func (mon *monitor) Start(routeSubtask task.Task) E.Error {
 				mon.status.Store(StatusUnknown)
 			}
 			mon.task.Finish(nil)
+			if mon.metric != nil {
+				prometheus.Unregister(mon.metric)
+			}
 		}()
 
 		if err := mon.checkUpdateHealth(); err != nil {
@@ -173,6 +185,9 @@ func (mon *monitor) checkUpdateHealth() error {
 			notif.Notify(mon.service, "server is down")
 		}
 	}
+	if mon.metric != nil {
+		mon.metric.Set(float64(status))
+	}
 
 	return nil
 }

internal/watcher/health/status.go

@@ -1,11 +1,10 @@
 package health
 
-type Status int
+type Status uint8
 
 const (
-	StatusUnknown Status = (iota << 1)
-
-	StatusHealthy
+	StatusUnknown Status = 0
+	StatusHealthy        = (1 << iota)
 	StatusNapping
 	StatusStarting
 	StatusUnhealthy

schema/config.schema.json

@@ -1,7 +1,7 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
   "type": "object",
-  "title": "go-proxy config file",
+  "title": "GoDoxy config file",
   "properties": {
     "autocert": {
       "title": "Autocert configuration",

schema/providers.schema.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "title": "go-proxy providers file",
+  "title": "GoDoxy standalone include file",
   "oneOf": [
     {
       "type": "object"

scripts/build.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
 
 mkdir -p bin
-echo building go-proxy version ${VERSION}, build flags \"${BUILD_FLAGS}\"
-go build -ldflags "${BUILD_FLAGS}" -pgo=auto -o bin/go-proxy ./cmd
+echo building GoDoxy version ${VERSION}, build flags \"${BUILD_FLAGS}\"
+go build -ldflags "${BUILD_FLAGS}" -pgo=auto -o bin/godoxy ./cmd