started rewrite in go

1 files changed, 103 insertions, 0 deletions

diff --git a/src/rhctl/main.go b/src/rhctl/main.go
new file mode 100644
index 0000000..430c287
--- /dev/null
+++ b/src/rhctl/main.go
@@ -0,0 +1,103 @@
+//
+//  rhctl
+//
+//  Copyright (C) 2009-2016 Christian Pointner <equinox@helsinki.at>
+//
+//  This file is part of rhctl.
+//
+//  rhctl is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  any later version.
+//
+//  rhctl is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/signal"
+	"sync"
+)
+
+var (
+	rhl  = log.New(os.Stderr, "[rhctl]\t", log.LstdFlags)
+	rhdl = log.New(ioutil.Discard, "[rhctl-dbg]\t", log.LstdFlags)
+)
+
+func init() {
+	if _, exists := os.LookupEnv("RHCTL_DEBUG"); exists {
+		rhdl.SetOutput(os.Stderr)
+	}
+}
+
+type envStringValue string
+
+func newEnvStringValue(key, dflt string) *envStringValue {
+	if envval, exists := os.LookupEnv(key); exists {
+		return (*envStringValue)(&envval)
+	} else {
+		return (*envStringValue)(&dflt)
+	}
+}
+
+func (s *envStringValue) Set(val string) error {
+	*s = envStringValue(val)
+	return nil
+}
+
+func (s *envStringValue) Get() interface{} { return string(*s) }
+
+func (s *envStringValue) String() string { return fmt.Sprintf("%s", *s) }
+
+func main() {
+	webAddr := newEnvStringValue("RHCTL_WEB_ADDR", "localhost:4080")
+	flag.Var(webAddr, "web-addr", "addr:port to listen on (environment: RHCTL_WEB_ADDR)")
+	help := flag.Bool("help", false, "show usage")
+
+	flag.Parse()
+	if *help {
+		flag.Usage()
+		return
+	}
+
+	var wg sync.WaitGroup
+
+	if webAddr.Get().(string) != "" {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			rhl.Println("starting web-api:", webAddr.Get().(string))
+			//StartControlWeb(webAddr.Get().(string))
+			rhl.Println("web-api finished")
+		}()
+	}
+
+	alldone := make(chan bool)
+	go func() {
+		defer func() { alldone <- true }()
+		wg.Wait()
+	}()
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+
+	select {
+	case <-c:
+		rhl.Println("received interrupt, shutdown")
+		return
+	case <-alldone:
+		return
+	}
+}