Initial commit

units/aggregator/aggregator.go

@@ -0,0 +1,22 @@
+package aggregator
+
+import (
+	"fmt"
+
+	"code.google.com/p/go.net/context"
+	"github.com/localhots/yeast/tools"
+	"github.com/localhots/yeast/units/power"
+)
+
+func Call(ctx context.Context) context.Context {
+	results := []string{}
+
+	tools.SyncronizeParallelChain(ctx, func(ctx context.Context) {
+		r := ctx.Value("power_result").(power.PowerResult)
+		results = append(results, fmt.Sprintf("%d ^ %d = %d", r.Num, r.Power, r.Result))
+	})
+
+	ctx = context.WithValue(ctx, "power_results", results)
+
+	return ctx
+}

units/input/cli.go

@@ -0,0 +1,17 @@
+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
+}

units/logger/logger.go

@@ -0,0 +1,20 @@
+package logger
+
+import (
+	"fmt"
+
+	"code.google.com/p/go.net/context"
+)
+
+func Call(ctx context.Context) context.Context {
+	results := ctx.Value("power_results").([]string)
+	id := ctx.Value("id").(string)
+
+	fmt.Println("Calculation result", id)
+	fmt.Println("Power results are:")
+	for _, r := range results {
+		fmt.Println(r)
+	}
+
+	return ctx
+}

units/power/power.go

@@ -0,0 +1,37 @@
+package power
+
+import (
+	"code.google.com/p/go.net/context"
+)
+
+type (
+	PowerResult struct {
+		Num    int
+		Power  int
+		Result int
+	}
+)
+
+func Power2(ctx context.Context) context.Context {
+	v := ctx.Value("num").(int)
+	res := PowerResult{Num: v, Power: 2, Result: v * v}
+	ctx = context.WithValue(ctx, "power_result", res)
+
+	return ctx
+}
+
+func Power3(ctx context.Context) context.Context {
+	v := ctx.Value("num").(int)
+	res := PowerResult{Num: v, Power: 3, Result: v * v * v}
+	ctx = context.WithValue(ctx, "power_result", res)
+
+	return ctx
+}
+
+func Power5(ctx context.Context) context.Context {
+	v := ctx.Value("num").(int)
+	res := PowerResult{Num: v, Power: 5, Result: v * v * v * v * v}
+	ctx = context.WithValue(ctx, "power_result", res)
+
+	return ctx
+}

units/sleep/sleep.go

@@ -0,0 +1,15 @@
+package sleep
+
+import (
+	"fmt"
+	"time"
+
+	"code.google.com/p/go.net/context"
+)
+
+func Call(ctx context.Context) context.Context {
+	fmt.Println("Going into sleep")
+	time.Sleep(5 * time.Second)
+	fmt.Println("Woke up")
+	return ctx
+}

units/uuid/uuid.go

@@ -0,0 +1,12 @@
+package uuid
+
+import (
+	"code.google.com/p/go-uuid/uuid"
+	"code.google.com/p/go.net/context"
+)
+
+func Call(ctx context.Context) context.Context {
+	ctx = context.WithValue(ctx, "id", uuid.New())
+
+	return ctx
+}