/
server.go
163 lines (136 loc) · 4.14 KB
/
server.go
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package server
import (
"context"
"fmt"
"net"
"net/http"
_ "net/http/pprof" // pprof magic
"os"
"os/signal"
"syscall"
"time"
appctx "github.com/brave-intl/bat-go/libs/context"
"github.com/brave-intl/bat-go/libs/handlers"
"github.com/brave-intl/bat-go/libs/logging"
batware "github.com/brave-intl/bat-go/libs/middleware"
"github.com/brave/go-sync/cache"
syncContext "github.com/brave/go-sync/context"
"github.com/brave/go-sync/controller"
"github.com/brave/go-sync/datastore"
"github.com/brave/go-sync/middleware"
sentry "github.com/getsentry/sentry-go"
"github.com/go-chi/chi/v5"
chiware "github.com/go-chi/chi/v5/middleware"
"github.com/rs/zerolog"
"github.com/rs/zerolog/hlog"
"github.com/rs/zerolog/log"
)
var (
commit string
version string
buildTime string
healthCheckActive = true
)
type baseCtxFunc = func(net.Listener) context.Context
func setupLogger(ctx context.Context) (context.Context, *zerolog.Logger) {
ctx = context.WithValue(ctx, appctx.EnvironmentCTXKey, os.Getenv("ENV"))
ctx = context.WithValue(ctx, appctx.LogLevelCTXKey, zerolog.WarnLevel)
return logging.SetupLogger(ctx)
}
func setupRouter(ctx context.Context, logger *zerolog.Logger) (context.Context, *chi.Mux) {
r := chi.NewRouter()
r.Use(chiware.RequestID)
r.Use(chiware.RealIP)
r.Use(chiware.Heartbeat("/"))
if logger != nil {
// Also handles panic recovery
r.Use(hlog.NewHandler(*logger))
r.Use(hlog.UserAgentHandler("user_agent"))
r.Use(hlog.RequestIDHandler("req_id", "Request-Id"))
r.Use(batware.RequestLogger(logger))
}
r.Use(chiware.Timeout(60 * time.Second))
r.Use(batware.BearerToken)
r.Use(middleware.CommonResponseHeaders)
db, err := datastore.NewDynamo()
if err != nil {
sentry.CaptureException(err)
log.Panic().Err(err).Msg("Must be able to init datastore to start")
}
redis := cache.NewRedisClient()
cache := cache.NewCache(cache.NewRedisClientWithPrometheus(redis, "redis"))
// Provide datastore & cache via context
ctx = context.WithValue(ctx, syncContext.ContextKeyDatastore, db)
ctx = context.WithValue(ctx, syncContext.ContextKeyCache, &cache)
r.Mount("/v2", controller.SyncRouter(
cache,
datastore.NewDatastoreWithPrometheus(db, "dynamo")))
r.Get("/metrics", batware.Metrics())
log.Info().
Str("version", version).
Str("commit", commit).
Str("buildTime", buildTime).
Msg("server starting up")
healthCheckHandler := func(w http.ResponseWriter, r *http.Request) {
if healthCheckActive {
handlers.HealthCheckHandler(version, buildTime, commit, nil, nil)(w, r)
} else {
w.WriteHeader(http.StatusGone)
}
}
r.Get("/health-check", healthCheckHandler)
// Add profiling flag to enable profiling routes.
if os.Getenv("PPROF_ENABLED") != "" {
// pprof attaches routes to default serve mux
// host:6061/debug/pprof/
go func() {
log.Error().Err(http.ListenAndServe(":6061", http.DefaultServeMux))
}()
}
return ctx, r
}
func setupBaseCtx(ctx context.Context) baseCtxFunc {
return func(_ net.Listener) context.Context {
return ctx
}
}
// StartServer starts the translate proxy server on port 8195
func StartServer() {
serverCtx, logger := setupLogger(context.Background())
// Setup Sentry.
sentryDsn := os.Getenv("SENTRY_DSN")
if sentryDsn != "" {
err := sentry.Init(sentry.ClientOptions{
Dsn: sentryDsn,
Release: fmt.Sprintf("go-sync@%s-%s", commit, buildTime),
})
if err != nil {
logger.Panic().Err(err).Msg("Init sentry failed")
}
}
subLog := logger.Info().Str("prefix", "main")
subLog.Msg("Starting server")
serverCtx, r := setupRouter(serverCtx, logger)
port := ":8295"
srv := http.Server{
Addr: port,
Handler: r,
BaseContext: setupBaseCtx(serverCtx),
}
sig := make(chan os.Signal, 1)
signal.Notify(sig, syscall.SIGTERM)
go func() {
<-sig
log.Info().Msg("SIGTERM received, disabling health check")
healthCheckActive = false // disable health check
time.Sleep(60 * time.Second)
srv.Shutdown(serverCtx)
}()
err := srv.ListenAndServe()
if err == http.ErrServerClosed {
log.Info().Msg("HTTP server closed")
} else if err != nil {
sentry.CaptureException(err)
log.Panic().Err(err).Msg("HTTP server start failed!")
}
}