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package main
import (
"bufio"
"fmt"
"log"
"net/http"
"os"
"time"
)
func main() {
msgs := make(chan interface{}, 4096)
mux := http.NewServeMux()
wrks := []*Worker{}
routes := make(map[string]bool)
// define luna.router module
routeModule := make(map[string]any)
routeModule["route"] = func (l *Lua) int {
fn := l.PopToRef()
route := l.ToString(-1)
// find corresponding worker for the lua context
var wrk *Worker
for _, wrk = range wrks {
if wrk.HasSameLua(l) {
wrk.SetRoute(route, fn)
break
}
}
if wrk == nil {
return 0
}
// check if route is already registered. otherwise
// mux.HandleFunc will panic
_, ok := routes[route]
if ok {
return 0
}
routes[route] = true
mux.HandleFunc(
route,
func (w http.ResponseWriter, r *http.Request) {
start := time.Now()
resCh := HandleHTTPRequest(msgs, route, r)
res := <- resCh
for k, h := range res.Headers {
w.Header().Set(k, h)
}
w.WriteHeader(int(res.Code))
fmt.Fprint(w, string(res.Body))
log.Printf(
"%s %s (%s) -> %d\n",
r.Method,
r.URL.Path,
time.Now().Sub(start),
res.Code,
)
},
)
return 0
}
module := make(map[string]any)
module["router"] = routeModule
// start workers
for i := 0; i < 8; i++ {
wrk := NewWorker()
wrks = append(wrks, wrk)
go func () {
err := wrk.Start("init.lua", module)
if err != nil {
log.Fatal(err)
}
wrks = append(wrks, wrk)
wrk.Listen(msgs)
}()
defer wrk.Stop()
log.Printf("worker %d started\n", i)
}
// listen for evals from stdio
go func () {
reader := bufio.NewReader(os.Stdin)
for {
code, _ := reader.ReadString('\n')
for _, wrk := range wrks {
if err := wrk.Run(code); err != nil {
log.Printf("error: %s\n", err)
break
}
}
}
}()
fmt.Println("luna is running at 127.0.0.1:3002...")
log.Fatal(http.ListenAndServe("127.0.0.1:3002", mux))
}
|
