func main() {
rootConfig, err := config.NewConfig(os.Args)
logger := rootConfig.Logger
err = rootConfig.Validate()
if err != nil {
logger.Fatal("Error validating config:", err, lager.Data{"config": rootConfig})
}
go func() {
logger.Info(fmt.Sprintf("Starting profiling server on port %d", rootConfig.ProfilerPort))
err := http.ListenAndServe(fmt.Sprintf("0.0.0.0:%d", rootConfig.ProfilerPort), nil)
if err != nil {
logger.Error("profiler failed with error", err)
}
}()
if _, err := os.Stat(rootConfig.StaticDir); os.IsNotExist(err) {
logger.Fatal(fmt.Sprintf("staticDir: %s does not exist", rootConfig.StaticDir), nil)
}
backends := domain.NewBackends(rootConfig.Proxy.Backends, logger)
arpManager := domain.NewArmManager(logger)
cluster := domain.NewCluster(
backends,
rootConfig.Proxy.HealthcheckTimeout(),
logger,
arpManager,
)
handler := api.NewHandler(backends, logger, rootConfig.API, rootConfig.StaticDir)
members := grouper.Members{
{
Name: "proxy",
Runner: proxy.NewRunner(cluster, rootConfig.Proxy.Port, logger),
},
{
Name: "api",
Runner: api.NewRunner(rootConfig.API.Port, handler, logger),
},
}
if rootConfig.HealthPort != rootConfig.API.Port {
members = append(members, grouper.Member{
Name: "health",
Runner: health.NewRunner(rootConfig.HealthPort, logger),
})
}
group := grouper.NewDynamic(os.Kill, len(members), len(members))
process := ifrit.Invoke(group)
inserter := group.Client().Inserter()
for _, member := range members {
inserter <- member
}
group.Client().Close()
err = waitUntilReady(process, logger)
if err != nil {
logger.Fatal("Error starting switchboard", err, lager.Data{"proxyConfig": rootConfig.Proxy})
}
logger.Info("Proxy started", lager.Data{"proxyConfig": rootConfig.Proxy})
err = ioutil.WriteFile(rootConfig.PidFile, []byte(strconv.Itoa(os.Getpid())), 0644)
if err == nil {
logger.Info(fmt.Sprintf("Wrote pidFile to %s", rootConfig.PidFile))
} else {
logger.Fatal("Cannot write pid to file", err, lager.Data{"pidFile": rootConfig.PidFile})
}
err = <-process.Wait()
if err != nil {
logger.Fatal("Switchboard exited unexpectedly", err, lager.Data{"proxyConfig": rootConfig.Proxy})
}
}
)
var _ = Describe("Handler", func() {
var (
handler http.Handler
responseRecorder *httptest.ResponseRecorder
)
JustBeforeEach(func() {
backends := &domainfakes.FakeBackends{}
logger := lagertest.NewTestLogger("Handler Test")
config := config.API{
ForceHttps: true,
}
staticDir := ""
handler = api.NewHandler(backends, logger, config, staticDir)
})
Context("when a request panics", func() {
var (
realBackendsIndex func(backends domain.Backends) http.Handler
responseWriter *apifakes.FakeResponseWriter
request *http.Request
)
BeforeEach(func() {
realBackendsIndex = api.BackendsIndex
api.BackendsIndex = func(domain.Backends) http.Handler {
return http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
panic("fake request panic")
})