RPC refactor to separate core from core_client and the rest of RPC.

Other random changes.

process/process.go

@@ -0,0 +1,61 @@
+package process
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"time"
+)
+
+func makeFile(prefix string) *os.File {
+	now := time.Now()
+	filename := fmt.Sprintf("%v_%v.out", prefix, now.Format("2006_01_02_15_04_05_MST"))
+	f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		panic(err)
+	}
+	return f
+}
+
+type Process struct {
+	Cmd    *exec.Cmd
+	Output *os.File
+}
+
+const (
+	ProcessModeStd = iota
+	ProcessModeDaemon
+)
+
+func CreateProcess(mode int, name string, args ...string) *Process {
+	out := makeFile(name)
+	cmd := exec.Command(name, args...)
+	switch mode {
+	case ProcessModeStd:
+		cmd.Stdout = io.MultiWriter(os.Stdout, out)
+		cmd.Stderr = io.MultiWriter(os.Stderr, out)
+		cmd.Stdin = nil
+	case ProcessModeDaemon:
+		cmd.Stdout = out
+		cmd.Stderr = out
+		cmd.Stdin = nil
+	}
+	if err := cmd.Start(); err != nil {
+		fmt.Printf("Failed to run command. %v\n", err)
+		return nil
+	} else {
+		fmt.Printf("Success!")
+	}
+	return &Process{
+		Cmd:    cmd,
+		Output: out,
+	}
+}
+
+func Watch(proc *Process) {
+	exitErr := proc.Cmd.Wait()
+	if exitErr != nil {
+		fmt.Println("%v", exitErr)
+	}
+}