Files
go-omni/app/transport.go

113 lines
3.3 KiB
Go

package app
import (
"context"
"crypto/tls"
"errors"
"fmt"
"net"
"strings"
"time"
"git.yuntuo.hk/k2safe/go-omni/config"
"git.yuntuo.hk/k2safe/go-omni/internal/httplimits"
h2transport "git.yuntuo.hk/k2safe/go-omni/transport/http2"
"git.yuntuo.hk/k2safe/go-omni/transport/native"
)
// ServeContext serves a caller-created listener using the configured transport
// and TLS. App takes ownership of the listener, including on startup failure,
// and runs resource cleanup only after admitted handlers have returned.
func (a *App) ServeContext(ctx context.Context, listener net.Listener) (runErr error) {
defer func() { runErr = shutdownResult(ctx, runErr) }()
if listener == nil {
return errors.Join(errors.New("go-omni: nil listener"), a.Close())
}
defer listener.Close()
if ctx == nil {
ctx = context.Background()
}
if ctx.Err() != nil {
_ = listener.Close()
return a.Close()
}
stopWatching := a.watchShutdown(ctx)
defer stopWatching()
serve, err := a.prepareTransport()
if err != nil {
_ = listener.Close()
return errors.Join(err, a.Close())
}
return errors.Join(serve(ctx, listener), a.Close())
}
func (a *App) prepareTransport() (func(context.Context, net.Listener) error, error) {
if err := a.ValidateHTTP(); err != nil {
return nil, err
}
if err := a.config.ValidateTransport(); err != nil {
return nil, err
}
shutdownTimeout := a.config.ShutdownTimeout
if shutdownTimeout <= 0 {
shutdownTimeout = 10 * time.Second
}
var tlsConfig *tls.Config
if strings.TrimSpace(a.config.TLS.CertFile) != "" {
certificate, err := tls.LoadX509KeyPair(a.config.TLS.CertFile, a.config.TLS.KeyFile)
if err != nil {
return nil, fmt.Errorf("go-omni: load TLS certificate: %w", err)
}
tlsConfig = &tls.Config{Certificates: []tls.Certificate{certificate}, MinVersion: tls.VersionTLS12}
}
switch a.config.Transport {
case config.TransportNative:
server := native.New(a)
// App enforces the service/route policy after routing. Keep only the
// supported framing ceiling here, never a hidden smaller transport cap.
server.MaxBodyBytes = httplimits.MaxBodyBytes
server.ShutdownTimeout = shutdownTimeout
cfg := a.config.HTTP
if cfg.ReadHeaderTimeout > 0 {
server.ReadHeaderTimeout = cfg.ReadHeaderTimeout
}
if cfg.ReadTimeout > 0 {
server.ReadTimeout = cfg.ReadTimeout
}
if cfg.WriteTimeout > 0 {
server.WriteTimeout = cfg.WriteTimeout
}
if cfg.IdleTimeout > 0 {
server.IdleTimeout = cfg.IdleTimeout
}
if cfg.MaxHeaderBytes > 0 {
server.MaxHeaderBytes = cfg.MaxHeaderBytes
}
if tlsConfig != nil {
return func(ctx context.Context, listener net.Listener) error {
return server.ServeTLS(ctx, listener, tlsConfig)
}, nil
}
return server.Serve, nil
case config.TransportHTTP2:
server := h2transport.New(a)
server.MaxBodyBytes = httplimits.MaxBodyBytes
server.ShutdownTimeout = shutdownTimeout
if a.config.HTTP.IdleTimeout > 0 {
server.IdleTimeout = a.config.HTTP.IdleTimeout
}
if a.config.HTTP.MaxHeaderBytes > 0 {
server.MaxHeaderBytes = a.config.HTTP.MaxHeaderBytes
}
return func(ctx context.Context, listener net.Listener) error {
return server.ServeTLS(ctx, listener, tlsConfig)
}, nil
default:
server := a.NewServer("")
server.TLSConfig = tlsConfig
return func(ctx context.Context, listener net.Listener) error {
return a.serveContext(ctx, server, listener)
}, nil
}
}