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continuserv: Make port flag-specified

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This commit is contained in:
Daniel Wagner-Hall 2015-09-10 11:29:16 +01:00
parent c4acee3bcb
commit e30272733b
1 changed files with 17 additions and 5 deletions
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22
scripts/continuserv/main.go
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@ -5,6 +5,7 @@ package main
import (
"bytes"
"flag"
"fmt"
"io/ioutil"
"log"
@ -20,11 +21,17 @@ import (
fsnotify "gopkg.in/fsnotify.v1"
)
var toServe atomic.Value // Always contains valid []byte to serve. May be stale unless wg is zero.
var wg sync.WaitGroup // Indicates how many updates are pending.
var mu sync.Mutex // Prevent multiple updates in parallel.
var (
port = flag.Int("port", 8000, "Port on which to serve HTTP")
toServe atomic.Value // Always contains valid []byte to serve. May be stale unless wg is zero.
wg sync.WaitGroup // Indicates how many updates are pending.
mu sync.Mutex // Prevent multiple updates in parallel.
)
func main() {
flag.Parse()
w, err := fsnotify.NewWatcher()
if err != nil {
log.Fatalf("Error making watcher: %v", err)
@ -48,9 +55,14 @@ func main() {
ch := make(chan struct{}, 100) // Buffered to ensure we can multiple-increment wg for pending writes
go doPopulate(ch, dir)
http.HandleFunc("/", serve)
go http.ListenAndServe(":8000", nil)
go watchFS(ch, w)
http.HandleFunc("/", serve)
log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
}
func watchFS(ch chan struct{}, w *fsnotify.Watcher) {
for {
select {
case e := <-w.Events: