main.go

package main

import (
	"context"
	"fmt"
	"log"
	"net/http"

	"github.com/ServiceWeaver/weaver"
)

// This is a template of a simple Service Weaver application. You can run the
// application by running `go run .`.
//
//     $ go run .
//
// To use a config file, first update the binary name in weaver.toml to be the
// name of the binary that's produced when you run `go build .`. Then, you can
// run the app in a single process or in multiple processes.
//
//     $ weaver single deploy weaver.toml
//     $ weaver multi deploy weaver.toml
//
// See https://serviceweaver.dev/docs for more information on writing Service
// Weaver applications.

//go:generate weaver generate ./...

func main() {
	// weaver.Run runs a Service Weaver application. It creates and initializes
	// all components, and then passes a pointer to the main component to the
	// serve function.
	if err := weaver.Run(context.Background(), serve); err != nil {
		log.Fatal(err)
	}
}

// app implements the main component, the entry point to a Service Weaver app.
type app struct {
	weaver.Implements[weaver.Main]

	// lis is the network listener on which this app serves HTTP traffic. By
	// default, the name of the listener is the same as the name of the field,
	// but you can override the name using a `weaver:"NAME"` annotation.
	lis weaver.Listener `weaver:"lis"`
}

// serve serves HTTP traffic.
func serve(ctx context.Context, app *app) error {
	http.HandleFunc("/", func(w http.ResponseWriter, _ *http.Request) {
		fmt.Fprintln(w, "Hello, World!")
	})
	app.Logger(ctx).Info("Listening on...", "address", app.lis)
	return http.Serve(app.lis, nil)
}