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main.go
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main.go
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// Sample run-helloworld is a minimal Cloud Run service.
package main
import (
"fmt"
"log"
"net/http"
"os"
)
func main() {
log.Print("starting server...")
http.HandleFunc("/", handler)
// Determine port for HTTP service.
port := os.Getenv("PORT")
if port == "" {
port = "8080"
log.Printf("defaulting to port %s", port)
}
// Start HTTP server.
log.Printf("listening on port %s", port)
if err := http.ListenAndServe(":"+port, nil); err != nil {
log.Fatal(err)
}
}
func handler(w http.ResponseWriter, r *http.Request) {
name := os.Getenv("NAME")
if name == "" {
name = "World"
}
fmt.Fprintf(w, "Hello %s!\n", name)
}