Input outside of a unit

calculate.go

@@ -1,17 +1,23 @@
 package main
 
 import (
+	"flag"
+
 	"code.google.com/p/go.net/context"
 	"github.com/localhots/yeast/core"
 )
 
 func main() {
+	var num int
+	flag.IntVar(&num, "num", 0, "Pass this number")
+	flag.Parse()
+
 	chain, ok := core.NewChain("calculate")
 	if !ok {
 		println("Bad chain: calculate")
 		return
 	}
 
-	ctx := context.Background()
+	ctx := context.WithValue(context.Background(), "num", num)
 	core.ProcessChain(ctx, chain)
 }

config/chains.json

@@ -2,7 +2,6 @@
     "calculate": {
         "s": [
             "uuid",
-            "input_from_flag",
             {
                 "p": [
                     "power2",

core/units.go

@@ -3,7 +3,6 @@ package core
 import (
 	"code.google.com/p/go.net/context"
 	"github.com/localhots/yeast/units/aggregator"
-	"github.com/localhots/yeast/units/input"
 	"github.com/localhots/yeast/units/logger"
 	"github.com/localhots/yeast/units/power"
 	"github.com/localhots/yeast/units/sleep"
@@ -21,7 +20,6 @@ var (
 		"power2":     power.Power2,
 		"power3":     power.Power3,
 		"power5":     power.Power5,
-		"input_from_flag": input.FromFlag,
 		"sleep":      sleep.Call,
 		"uuid":       uuid.Call,
 	}

units/input/cli.go

@@ -1,17 +0,0 @@
-package input
-
-import (
-	"flag"
-
-	"code.google.com/p/go.net/context"
-)
-
-func FromFlag(ctx context.Context) context.Context {
-	var num int
-	flag.IntVar(&num, "num", 0, "Pass this number")
-	flag.Parse()
-
-	ctx = context.WithValue(ctx, "num", num)
-
-	return ctx
-}