Feat: Add support for OpenTracing

api.go

@@ -12,6 +12,7 @@ import (
 
 func registerBookHandler(allocCtx context.Context, email string, password string, coworkingName string) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
+		log.Println("Received booking request", r.Method)
 		if r.Method != http.MethodPost {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return

go.mod

@@ -3,14 +3,65 @@ module github.com/jeromewir/webook
 go 1.24.0
 
 require (
+	github.com/bytedance/sonic v1.12.10 // indirect
+	github.com/bytedance/sonic/loader v0.2.3 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/chromedp/cdproto v0.0.0-20250210231439-aea867ea8506 // indirect
 	github.com/chromedp/chromedp v0.12.1 // indirect
 	github.com/chromedp/sysutil v1.1.0 // indirect
+	github.com/cloudwego/base64x v0.1.5 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
+	github.com/gin-contrib/sse v1.0.0 // indirect
+	github.com/gin-gonic/gin v1.10.0 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.25.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
 	github.com/gobwas/ws v1.4.0 // indirect
+	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.1 // indirect
 	github.com/joho/godotenv v1.5.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mailru/easyjson v0.9.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/contrib/bridges/otelslog v0.10.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin v0.60.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.60.0 // indirect
+	go.opentelemetry.io/otel v1.35.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.35.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.35.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdoutlog v0.11.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.35.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.35.0 // indirect
+	go.opentelemetry.io/otel/log v0.11.0 // indirect
+	go.opentelemetry.io/otel/metric v1.35.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.35.0 // indirect
+	go.opentelemetry.io/otel/sdk/log v0.11.0 // indirect
+	go.opentelemetry.io/otel/sdk/metric v1.35.0 // indirect
+	go.opentelemetry.io/otel/trace v1.35.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.5.0 // indirect
+	golang.org/x/arch v0.14.0 // indirect
+	golang.org/x/crypto v0.33.0 // indirect
+	golang.org/x/net v0.35.0 // indirect
 	golang.org/x/sys v0.30.0 // indirect
+	golang.org/x/text v0.22.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250218202821-56aae31c358a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a // indirect
+	google.golang.org/grpc v1.71.0 // indirect
+	google.golang.org/protobuf v1.36.5 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,21 +1,147 @@
+github.com/bytedance/sonic v1.12.10 h1:uVCQr6oS5669E9ZVW0HyksTLfNS7Q/9hV6IVS4nEMsI=
+github.com/bytedance/sonic v1.12.10/go.mod h1:uVvFidNmlt9+wa31S1urfwwthTWteBgG0hWuoKAXTx8=
+github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/bytedance/sonic/loader v0.2.3 h1:yctD0Q3v2NOGfSWPLPvG2ggA2kV6TS6s4wioyEqssH0=
+github.com/bytedance/sonic/loader v0.2.3/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
+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/chromedp/cdproto v0.0.0-20250210231439-aea867ea8506 h1:OfjMcN8R6eUWZfKyJaTnlyiZh1BGgmEKmRkCZuDtGRw=
 github.com/chromedp/cdproto v0.0.0-20250210231439-aea867ea8506/go.mod h1:RTGuBeCeabAJGi3OZf71a6cGa7oYBfBP75VJZFLv6SU=
 github.com/chromedp/chromedp v0.12.1 h1:kBMblXk7xH5/6j3K9uk8d7/c+fzXWiUsCsPte0VMwOA=
 github.com/chromedp/chromedp v0.12.1/go.mod h1:F6+wdq9LKFDMoyxhq46ZLz4VLXrsrCAR3sFqJz4Nqc0=
 github.com/chromedp/sysutil v1.1.0 h1:PUFNv5EcprjqXZD9nJb9b/c9ibAbxiYo4exNWZyipwM=
 github.com/chromedp/sysutil v1.1.0/go.mod h1:WiThHUdltqCNKGc4gaU50XgYjwjYIhKWoHGPTUfWTJ8=
+github.com/cloudwego/base64x v0.1.5 h1:XPciSp1xaq2VCSt6lF0phncD4koWyULpl5bUxbfCyP4=
+github.com/cloudwego/base64x v0.1.5/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
+github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
+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/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
+github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
+github.com/gabriel-vasile/mimetype v1.4.8 h1:FfZ3gj38NjllZIeJAmMhr+qKL8Wu+nOoI3GqacKw1NM=
+github.com/gabriel-vasile/mimetype v1.4.8/go.mod h1:ByKUIKGjh1ODkGM1asKUbQZOLGrPjydw3hYPU2YU9t8=
+github.com/gin-contrib/sse v1.0.0 h1:y3bT1mUWUxDpW4JLQg/HnTqV4rozuW4tC9eFKTxYI9E=
+github.com/gin-contrib/sse v1.0.0/go.mod h1:zNuFdwarAygJBht0NTKiSi3jRf6RbqeILZ9Sp6Slhe0=
+github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
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+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
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+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
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+go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.35.0 h1:PB3Zrjs1sG1GBX51SXyTSoOTqcDglmsk7nT6tkKPb/k=
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+go.opentelemetry.io/otel/metric v1.35.0/go.mod h1:nKVFgxBZ2fReX6IlyW28MgZojkoAkJGaE8CpgeAU3oE=
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main.go

@@ -2,37 +2,71 @@ package main
 
 import (
 	"context"
+	"errors"
 	"log"
 	"net/http"
 	"os"
 
 	"github.com/chromedp/chromedp"
 	"github.com/joho/godotenv"
+	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
 )
 
-func main() {
-	godotenv.Load()
+func getCredentials() (string, string, string, error) {
+	email := os.Getenv("WEWORK_EMAIL")
+	password := os.Getenv("WEWORK_PASSWORD")
+	coworkingName := os.Getenv("WEWORK_COWORKING_NAME")
+
+	if email == "" || password == "" || coworkingName == "" {
+		return "", "", "", errors.New("WEWORK_EMAIL, WEWORK_PASSWORD and WEWORK_CORWORKING_NAME must be set")
+	}
 
+	return email, password, coworkingName, nil
+}
+
+func getChromeAllocator() (context.Context, context.CancelFunc) {
 	opts := append(chromedp.DefaultExecAllocatorOptions[:],
 		chromedp.UserDataDir("./chrome-data"),
 		chromedp.Flag("headless", false),
 	)
 
-	email := os.Getenv("WEWORK_EMAIL")
-	password := os.Getenv("WEWORK_PASSWORD")
-	coworkingName := os.Getenv("WEWORK_COWORKING_NAME")
+	allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
 
-	if email == "" || password == "" || coworkingName == "" {
-		log.Fatal("WEWORK_EMAIL, WEWORK_PASSWORD and WEWORK_CORWORKING_NAME must be set")
+	return allocCtx, cancel
+}
+
+func newHTTPHandler(allocCtx context.Context, email, password, coworkingName string) http.Handler {
+	mux := http.NewServeMux()
+
+	// Register handlers.
+	mux.Handle("/api/book", otelhttp.NewHandler(http.HandlerFunc(registerBookHandler(allocCtx, email, password, coworkingName)), "/api/book"))
+
+	// Add HTTP instrumentation for the whole server.
+	handler := otelhttp.NewHandler(mux, "/")
+
+	return handler
+}
+
+func main() {
+	godotenv.Load()
+
+	cleanup := initTracer(os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT"), "webook")
+	defer cleanup(context.Background())
+
+	email, password, coworkingName, err := getCredentials()
+
+	if err != nil {
+		log.Fatal(err)
 	}
 
-	allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
+	allocCtx, cancel := getChromeAllocator()
 	defer cancel()
 
-	// also set up a custom logger
-	http.HandleFunc("/api/book", registerBookHandler(allocCtx, email, password, coworkingName))
-	log.Println("Starting server on port 8080...")
-	log.Fatal(http.ListenAndServe(":8080", nil))
+	handler := newHTTPHandler(allocCtx, email, password, coworkingName)
+
+	if err := http.ListenAndServe(":8081", handler); err != nil {
+		log.Fatal(err)
+	}
 
 	log.Println("done")
 }