func main() {
var (
addr = envString("PORT", defaultPort)
rsurl = envString("ROUTINGSERVICE_URL", defaultRoutingServiceURL)
httpAddr = flag.String("http.addr", ":"+addr, "HTTP listen address")
routingServiceURL = flag.String("service.routing", rsurl, "routing service URL")
ctx = context.Background()
)
flag.Parse()
var logger log.Logger
logger = log.NewLogfmtLogger(os.Stderr)
logger = &serializedLogger{Logger: logger}
logger = log.NewContext(logger).With("ts", log.DefaultTimestampUTC)
var (
cargos = repository.NewCargo()
locations = repository.NewLocation()
voyages = repository.NewVoyage()
handlingEvents = repository.NewHandlingEvent()
)
// Configure some questionable dependencies.
var (
handlingEventFactory = cargo.HandlingEventFactory{
CargoRepository: cargos,
VoyageRepository: voyages,
LocationRepository: locations,
}
handlingEventHandler = handling.NewEventHandler(
inspection.NewService(cargos, handlingEvents, nil),
)
)
// Facilitate testing by adding some cargos.
storeTestData(cargos)
fieldKeys := []string{"method"}
var rs routing.Service
rs = routing.NewProxyingMiddleware(*routingServiceURL, ctx)(rs)
var bs booking.Service
bs = booking.NewService(cargos, locations, handlingEvents, rs)
bs = booking.NewLoggingService(log.NewContext(logger).With("component", "booking"), bs)
bs = booking.NewInstrumentingService(
kitprometheus.NewCounter(stdprometheus.CounterOpts{
Namespace: "api",
Subsystem: "booking_service",
Name: "request_count",
Help: "Number of requests received.",
}, fieldKeys),
metrics.NewTimeHistogram(time.Microsecond, kitprometheus.NewSummary(stdprometheus.SummaryOpts{
Namespace: "api",
Subsystem: "booking_service",
Name: "request_latency_microseconds",
Help: "Total duration of requests in microseconds.",
}, fieldKeys)), bs)
var ts tracking.Service
ts = tracking.NewService(cargos, handlingEvents)
ts = tracking.NewLoggingService(log.NewContext(logger).With("component", "tracking"), ts)
ts = tracking.NewInstrumentingService(
kitprometheus.NewCounter(stdprometheus.CounterOpts{
Namespace: "api",
Subsystem: "tracking_service",
Name: "request_count",
Help: "Number of requests received.",
}, fieldKeys),
metrics.NewTimeHistogram(time.Microsecond, kitprometheus.NewSummary(stdprometheus.SummaryOpts{
Namespace: "api",
Subsystem: "tracking_service",
Name: "request_latency_microseconds",
Help: "Total duration of requests in microseconds.",
}, fieldKeys)), ts)
var hs handling.Service
hs = handling.NewService(handlingEvents, handlingEventFactory, handlingEventHandler)
hs = handling.NewLoggingService(log.NewContext(logger).With("component", "handling"), hs)
hs = handling.NewInstrumentingService(
kitprometheus.NewCounter(stdprometheus.CounterOpts{
Namespace: "api",
Subsystem: "handling_service",
Name: "request_count",
Help: "Number of requests received.",
}, fieldKeys),
metrics.NewTimeHistogram(time.Microsecond, kitprometheus.NewSummary(stdprometheus.SummaryOpts{
Namespace: "api",
Subsystem: "handling_service",
Name: "request_latency_microseconds",
Help: "Total duration of requests in microseconds.",
}, fieldKeys)), hs)
httpLogger := log.NewContext(logger).With("component", "http")
mux := http.NewServeMux()
mux.Handle("/booking/v1/", booking.MakeHandler(ctx, bs, httpLogger))
mux.Handle("/tracking/v1/", tracking.MakeHandler(ctx, ts, httpLogger))
mux.Handle("/handling/v1/", handling.MakeHandler(ctx, hs, httpLogger))
http.Handle("/", accessControl(mux))
http.Handle("/metrics", stdprometheus.Handler())
errs := make(chan error, 2)
go func() {
logger.Log("transport", "http", "address", *httpAddr, "msg", "listening")
errs <- http.ListenAndServe(*httpAddr, nil)
}()
go func() {
c := make(chan os.Signal)
signal.Notify(c, syscall.SIGINT)
errs <- fmt.Errorf("%s", <-c)
}()
logger.Log("terminated", <-errs)
}
func main() {
var (
addr = envString("PORT", defaultPort)
rsurl = envString("ROUTINGSERVICE_URL", defaultRoutingServiceURL)
httpAddr = flag.String("http.addr", ":"+addr, "HTTP listen address")
routingServiceURL = flag.String("service.routing", rsurl, "routing service URL")
ctx = context.Background()
)
flag.Parse()
var logger log.Logger
logger = log.NewLogfmtLogger(os.Stderr)
logger = &serializedLogger{Logger: logger}
logger = log.NewContext(logger).With("ts", log.DefaultTimestampUTC)
var (
cargos = repository.NewCargo()
locations = repository.NewLocation()
voyages = repository.NewVoyage()
handlingEvents = repository.NewHandlingEvent()
)
// Configure some questionable dependencies.
var (
handlingEventFactory = cargo.HandlingEventFactory{
CargoRepository: cargos,
VoyageRepository: voyages,
LocationRepository: locations,
}
handlingEventHandler = handling.NewEventHandler(
inspection.NewService(cargos, handlingEvents, nil),
)
)
// Facilitate testing by adding some cargos.
storeTestData(cargos)
var rs routing.Service
rs = routing.NewProxyingMiddleware(*routingServiceURL, ctx)(rs)
var bs booking.Service
bs = booking.NewService(cargos, locations, handlingEvents, rs)
bs = booking.NewLoggingService(log.NewContext(logger).With("component", "booking"), bs)
var ts tracking.Service
ts = tracking.NewService(cargos, handlingEvents)
ts = tracking.NewLoggingService(log.NewContext(logger).With("component", "tracking"), ts)
var hs handling.Service
hs = handling.NewService(handlingEvents, handlingEventFactory, handlingEventHandler)
hs = handling.NewLoggingService(log.NewContext(logger).With("component", "handling"), hs)
httpLogger := log.NewContext(logger).With("component", "http")
mux := http.NewServeMux()
mux.Handle("/booking/v1/", booking.MakeHandler(ctx, bs, httpLogger))
mux.Handle("/tracking/v1/", tracking.MakeHandler(ctx, ts, httpLogger))
mux.Handle("/handling/v1/", handling.MakeHandler(ctx, hs, httpLogger))
http.Handle("/", accessControl(mux))
errs := make(chan error, 2)
go func() {
logger.Log("transport", "http", "address", *httpAddr, "msg", "listening")
errs <- http.ListenAndServe(*httpAddr, nil)
}()
go func() {
c := make(chan os.Signal)
signal.Notify(c, syscall.SIGINT)
errs <- fmt.Errorf("%s", <-c)
}()
logger.Log("terminated", <-errs)
}