first commit.

way too late.

example/integration_test.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"testing"
+
+	"github.com/didiercrunch/doorman"
+	"gopkg.in/mgo.v2/bson"
+)
+
+func TestDoormanDistribution(t *testing.T) {
+	wab = doorman.NewDoorman(bson.NewObjectId(), []float64{0.25, 0.5, 0.10, 0.05, 0.1})
+	n := 10000
+	cases := make([]float64, wab.Length())
+	for i := 0; i <= n; i++ {
+		cases[wab.GetRandomCase()] += 1
+	}
+	expt := make([]float64, wab.Length())
+	for i, p := range wab.Probabilities {
+		expt[i] = p * float64(n)
+	}
+	//  Todo: use chi square test to assert the results are not absurde
+	//if err := AssertTwoDistributionAreProbabliNotDifferent(expt, cases, 0.001); err != nil {
+	//	t.Error(err)
+	//}
+
+}

example/main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"html/template"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/didiercrunch/doorman"
+	"gopkg.in/mgo.v2/bson"
+)
+
+var wab = doorman.NewDoorman(bson.ObjectIdHex("54b33d5ef6fb5e3b77000001"), []float64{0.25, 0.5, 0.10, 0.05, 0.1})
+
+func init() {
+	if err := wab.NanoMsgSubscriber("tcp://127.0.0.1:40899"); err != nil {
+		panic(err)
+	}
+}
+
+func GetDoormanValue(r *http.Request) (string, int) {
+	switch wab.GetCaseFromData([]byte(r.URL.String())) {
+	case 0:
+		return "blue", 0
+	case 1:
+		return "red", 1
+	case 2:
+		return "pink", 2
+	case 3:
+		return "yellow", 3
+	case 4:
+		return "magenta", 4
+	}
+	log.Panic("impossible value returned by doorman")
+	return "", 0
+}
+
+var tmpl = `
+<!DOCTYPE html>
+<html>
+	<head></head>
+	<body style="background:{{ .color }};width:100%;height:100%">
+		<h1 style="text-align:center;">the doorman value is {{ .value }}</h1>
+		<p style="text-align:center;">
+			this doorman depend solely on the url.  If you hit different url you
+			will have different doorman results.
+		</p>
+	</body>
+</html>
+`
+
+func Handler(w http.ResponseWriter, r *http.Request) {
+	t, err := template.New("foo").Parse(tmpl)
+	if err != nil {
+		panic(err)
+	}
+	m := make(map[string]interface{})
+	m["color"], m["value"] = GetDoormanValue(r)
+	if err := t.Execute(w, m); err != nil {
+		panic(err)
+	}
+}
+
+func getPort() string {
+	if len(os.Args) > 1 {
+		return os.Args[1]
+	} else {
+		return "8080"
+	}
+}
+
+func main() {
+	http.HandleFunc("/", Handler)
+	port := getPort()
+	log.Println("serving on port", port)
+	log.Fatal(http.ListenAndServe(":"+port, nil))
+
+}