serve HTTP

trunk
vilmibm 2022-04-11 19:16:06 -05:00
parent a87c941bb3
commit 9b3ef7dc34
1 changed files with 35 additions and 4 deletions

View File

@ -4,6 +4,7 @@ import (
"flag"
"fmt"
"io"
"net/http"
"os"
)
@ -15,16 +16,26 @@ type iostreams struct {
type Opts struct {
ConfigPath string
IO iostreams
Log func(string)
Logf func(string, ...interface{})
}
func main() {
var configFlag = flag.String("config", "config.yml", "A path to a config file.")
flag.Parse()
io := iostreams{
Err: os.Stderr,
Out: os.Stdout,
}
opts := Opts{
ConfigPath: *configFlag,
IO: iostreams{
Err: os.Stderr,
Out: os.Stdout,
IO: io,
// TODO use real logger
Log: func(s string) {
fmt.Fprintln(io.Out, s)
},
Logf: func(s string, args ...interface{}) {
fmt.Fprintf(io.Out, s, args...)
},
}
@ -41,7 +52,27 @@ func _main(opts Opts) error {
os.Exit(1)
}
fmt.Printf("DBG %#v\n", cfg.InstanceName)
setupAPI(opts, *cfg)
// TODO TLS or SSL or something
opts.Logf("starting server at %s:%d\n", cfg.Host, cfg.Port)
if err := http.ListenAndServe(fmt.Sprintf("%s:%d", cfg.Host, cfg.Port), nil); err != nil {
return fmt.Errorf("http server exited with error: %w", err)
}
return nil
}
func handler(opts Opts, cfg Config, f http.HandlerFunc) http.HandlerFunc {
// TODO make this more real
return func(w http.ResponseWriter, req *http.Request) {
opts.Log(req.URL.Path)
f(w, req)
}
}
func setupAPI(opts Opts, cfg Config) {
http.HandleFunc("/instance", handler(opts, cfg, func(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, cfg.InstanceName)
}))
}