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})
}
}
for b := range c {
result = append(result, b)
}
return result
}
JustBeforeEach(func() {
logger := lagertest.NewTestLogger("Backends test")
backendConfigs := []config.Backend{
{"localhost", 50000, 60000, "status", "backend-0"},
{"localhost", 50001, 60001, "status", "backend-1"},
{"localhost", 50002, 60002, "status", "backend-2"},
}
backends = domain.NewBackends(backendConfigs, logger)
})
Describe("Concurrent operations", func() {
It("do not result in a race", func() {
readySetGo := make(chan interface{})
doneChans := []chan interface{}{
make(chan interface{}),
make(chan interface{}),
make(chan interface{}),
make(chan interface{}),
make(chan interface{}),
}
backend := backends.Any()