/
server.go
167 lines (130 loc) · 5.33 KB
/
server.go
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package cmd
import (
"context"
"fmt"
"net"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/getsentry/sentry-go"
"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
"github.com/obada-foundation/registry/api"
pbacc "github.com/obada-foundation/registry/api/pb/v1/account"
pbdidoc "github.com/obada-foundation/registry/api/pb/v1/diddoc"
"github.com/obada-foundation/registry/services/account"
"github.com/obada-foundation/registry/services/diddoc"
"github.com/obada-foundation/registry/system/db"
// "go.uber.org/zap"
)
// ServerCommand with command line flags and env vars
type ServerCommand struct {
Port int `long:"port" env:"SERVER_PORT" default:"2017" description:"port"`
Address string `long:"address" env:"SERVER_ADDRESS" default:"" description:"listening address"`
HTTPServer HTTPServerGroup `group:"http" namespace:"http" env-namespace:"HTTP"`
GrpcServer GrpcServerGroup `group:"grpc" namespace:"grpc" env-namespace:"GRPC"`
// Database connection
DB ImmuDBGroup `group:"db" namespace:"db" env-namespace:"DB"`
// Timeouts
ReadTimeout time.Duration `long:"read-timeout" env:"READ_TIMEOUT" default:"5s" description:"read timeout"`
WriteTimeout time.Duration `long:"write-timeout" env:"WRITE_TIMEOUT" default:"10s" description:"write timeout"`
IdleTimeout time.Duration `long:"idle-timeout" env:"IDLE_TIMEOUT" default:"120s" description:"idle timeout"`
ShutdownTimeout time.Duration `long:"shutdown-timeout" env:"SHUTDOWN_TIMEOUT" default:"20s" description:"shutdown timeout"`
SentryDSN string `long:"sentry-dsn" env:"SENTRY_DSN" default:"" description:"sentry dsn"`
CommonOpts
}
// HTTPServerGroup contains http server configuration options
type HTTPServerGroup struct {
Port int `long:"port" env:"PORT" default:"2017" description:"port"`
Address string `long:"address" env:"ADDRESS" default:"" description:"listening address"`
}
// GrpcServerGroup contains grpc server configuration options
type GrpcServerGroup struct {
Port int `long:"port" env:"PORT" default:"2018" description:"port"`
Address string `long:"address" env:"ADDRESS" default:"" description:"listening address"`
}
// ImmuDBGroup db connection details
type ImmuDBGroup struct {
Host string `long:"host" env:"HOST" default:"localhost" description:"immudb host"`
Port int `long:"port" env:"PORT" default:"3322" description:"immudb port"`
User string `long:"user" env:"USER" default:"immudb" description:"immudb user"`
Pass string `long:"password" env:"PASSWORD" default:"immudb" description:"immudb password"`
DBName string `long:"dbname" env:"NAME" default:"defaultdb" description:"immudb database name"`
}
// Execute is the entry point for "server" command, called by flag parser
func (s *ServerCommand) Execute(_ []string) error {
s.Logger.Infow("startup", "status", "server initialization started")
ctx := context.Background()
shutdown := make(chan os.Signal, 1)
signal.Notify(shutdown, syscall.SIGINT, syscall.SIGTERM)
serverErrors := make(chan error, 1)
err := sentry.Init(sentry.ClientOptions{
Dsn: s.SentryDSN,
})
if err != nil {
return fmt.Errorf("sentry.Init: %w", err)
}
dbClient, err := db.NewDBConnection(ctx, db.Connection{
Host: s.DB.Host,
Port: s.DB.Port,
User: s.DB.User,
Pass: s.DB.Pass,
DBName: s.DB.DBName,
})
if err != nil {
return fmt.Errorf("cannot enstalish connection to immudb: %w", err)
}
s.Logger.Infow("startup", "status", "immudb connection established")
didDocSvc := diddoc.NewService(dbClient, s.Logger)
accountSvc := account.NewService(dbClient, s.Logger)
grpcServer, srv := api.NewGRPCServer(api.GRPCConfig{
Log: s.Logger,
// Services
DIDDocService: didDocSvc,
AccountService: accountSvc,
})
grpcMux := runtime.NewServeMux()
if er := pbacc.RegisterAccountHandlerServer(ctx, grpcMux, srv); er != nil {
return er
}
if er := pbdidoc.RegisterDIDDocHandlerServer(ctx, grpcMux, srv); er != nil {
return er
}
grpcListener, err := net.Listen("tcp", fmt.Sprintf("%s:%d", s.GrpcServer.Address, s.GrpcServer.Port))
if err != nil {
return fmt.Errorf("cannot select listener address for grpc server: %w", err)
}
go func() {
s.Logger.Infow("startup", "status", "grpc server started", "host", grpcListener.Addr().String())
serverErrors <- grpcServer.Serve(grpcListener)
}()
mux := http.NewServeMux()
mux.Handle("/", grpcMux)
go func() {
listenAddr := fmt.Sprintf("%s:%d", s.HTTPServer.Address, s.HTTPServer.Port)
s.Logger.Infow("startup", "status", "http started", "host", listenAddr)
// nolint:gosec //check for later, needs refactoring to support timeouts
serverErrors <- http.ListenAndServe(listenAddr, mux)
}()
select {
case err := <-serverErrors:
return fmt.Errorf("api error: %w", err)
case sig := <-shutdown:
s.Logger.Infow("shutdown", "status", "shutdown started", "signal", sig)
defer s.Logger.Infow("shutdown", "status", "shutdown complete", "signal", sig)
shutDownCtx, cancel := context.WithTimeout(ctx, s.ShutdownTimeout)
defer cancel()
grpcServer.GracefulStop()
// if err := apiServer.Shutdown(shutDownCtx); err != nil {
// if er := apiServer.Close(); er != nil {
// err = fmt.Errorf("%w; %v", err, er)
// }
// return fmt.Errorf("could not stop server gracefully: %w", err)
// }
if err := dbClient.CloseSession(shutDownCtx); err != nil {
return fmt.Errorf("cannot close db connection: %w", err)
}
}
return nil
}