forked from cloudfoundry/gorouter
/
app.go
170 lines (140 loc) · 3.45 KB
/
app.go
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package common
import (
"github.com/cloudfoundry/gorouter/common"
"github.com/cloudfoundry/gorouter/route"
"github.com/nats-io/nats"
. "github.com/onsi/gomega"
"github.com/pivotal-golang/localip"
"encoding/json"
"errors"
"fmt"
"net/http"
"sync"
"time"
)
type TestApp struct {
mutex sync.Mutex
port uint16 // app listening port
rPort uint16 // router listening port
urls []route.Uri // host registered host name
mbusClient *nats.Conn
tags map[string]string
mux *http.ServeMux
stopped bool
routeService string
}
func NewTestApp(urls []route.Uri, rPort uint16, mbusClient *nats.Conn, tags map[string]string, routeService string) *TestApp {
app := new(TestApp)
port, _ := localip.LocalPort()
app.port = port
app.rPort = rPort
app.urls = urls
app.mbusClient = mbusClient
app.tags = tags
app.routeService = routeService
app.mux = http.NewServeMux()
return app
}
func (a *TestApp) AddHandler(path string, handler func(http.ResponseWriter, *http.Request)) {
a.mux.HandleFunc(path, handler)
}
func (a *TestApp) Urls() []route.Uri {
return a.urls
}
func (a *TestApp) Endpoint() string {
return fmt.Sprintf("http://%s:%d/", a.urls[0], a.rPort)
}
func (a *TestApp) Listen() {
server := &http.Server{
Addr: fmt.Sprintf(":%d", a.port),
Handler: a.mux,
}
a.Register()
go server.ListenAndServe()
}
func (a *TestApp) RegisterRepeatedly(duration time.Duration) {
a.start()
for {
if a.isStopped() {
break
}
a.Register()
time.Sleep(duration)
}
}
func (a *TestApp) Port() uint16 {
return a.port
}
func (a *TestApp) Register() {
uuid, _ := common.GenerateUUID()
rm := registerMessage{
Host: "localhost",
Port: a.port,
Uris: a.urls,
Tags: a.tags,
Dea: "dea",
App: "0",
StaleThresholdInSeconds: 1,
RouteServiceUrl: a.routeService,
PrivateInstanceId: uuid,
}
b, _ := json.Marshal(rm)
a.mbusClient.Publish("router.register", b)
}
func (a *TestApp) Unregister() {
rm := registerMessage{
Host: "localhost",
Port: a.port,
Uris: a.urls,
Tags: nil,
Dea: "dea",
App: "0",
}
b, _ := json.Marshal(rm)
a.mbusClient.Publish("router.unregister", b)
a.stop()
}
func (a *TestApp) VerifyAppStatus(status int) {
EventuallyWithOffset(1, func() error {
return a.CheckAppStatus(status)
}).ShouldNot(HaveOccurred())
}
func (a *TestApp) CheckAppStatus(status int) error {
for _, url := range a.urls {
uri := fmt.Sprintf("http://%s:%d", url, a.rPort)
resp, err := http.Get(uri)
if err != nil {
return err
}
if resp.StatusCode != status {
return errors.New(fmt.Sprintf("expected status code %d, got %d", status, resp.StatusCode))
}
}
return nil
}
func (a *TestApp) start() {
a.mutex.Lock()
a.stopped = false
a.mutex.Unlock()
}
func (a *TestApp) stop() {
a.mutex.Lock()
a.stopped = true
a.mutex.Unlock()
}
func (a *TestApp) isStopped() bool {
a.mutex.Lock()
defer a.mutex.Unlock()
return a.stopped
}
type registerMessage struct {
Host string `json:"host"`
Port uint16 `json:"port"`
Uris []route.Uri `json:"uris"`
Tags map[string]string `json:"tags"`
Dea string `json:"dea"`
App string `json:"app"`
StaleThresholdInSeconds int `json:"stale_threshold_in_seconds"`
RouteServiceUrl string `json:"route_service_url"`
PrivateInstanceId string `json:"private_instance_id"`
}