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("Cluster", func() {
var backends *fakes.FakeBackends
var logger lager.Logger
var cluster domain.Cluster
var fakeArpManager *fakes.FakeArpManager
const healthcheckTimeout = time.Second
BeforeEach(func() {
fakeArpManager = nil
backends = &fakes.FakeBackends{}
})
JustBeforeEach(func() {
logger = lagertest.NewTestLogger("Cluster test")
cluster = domain.NewCluster(backends, healthcheckTimeout, logger, fakeArpManager)
})
Describe("Monitor", func() {
var backend1, backend2, backend3 *fakes.FakeBackend
var urlGetter *fakes.FakeUrlGetter
var healthyResponse = &http.Response{
Body: &fakes.FakeReadWriteCloser{},
StatusCode: http.StatusOK,
}
BeforeEach(func() {
backend1 = &fakes.FakeBackend{}
backend1.AsJSONReturns(domain.BackendJSON{Host: "10.10.1.2"})
backend1.HealthcheckUrlReturns("backend1")