src

new.go (1957B)

---

 package server
 
 import (
 	"crypto/tls"
 	"fmt"
 	"net/http"
 
 	"code.dwrz.net/src/pkg/log"
 	"code.dwrz.net/src/pkg/server/redirect"
 )
 
 type Parameters struct {
 	Config  Config
 	Handler http.Handler
 	Log     *log.Logger
 }
 
 func (p Parameters) Validate() error {
 	if p.Handler == nil {
 		return fmt.Errorf("missing handler")
 	}
 	if p.Log == nil {
 		return fmt.Errorf("missing logger")
 	}
 
 	return nil
 }
 
 func New(p Parameters) (*Server, error) {
 	if err := p.Validate(); err != nil {
 		return nil, fmt.Errorf("invalid server parameters: %v", err)
 	}
 
 	var server = &Server{
 		cfg: &p.Config,
 		log: p.Log,
 	}
 
 	// Load TLS certificates, if provided.
 	var certs tls.Certificate
 	if p.Config.CertPath != "" && p.Config.KeyPath != "" {
 		var err error
 		certs, err = tls.LoadX509KeyPair(
 			p.Config.CertPath, p.Config.KeyPath,
 		)
 		if err != nil {
 			server.log.Error.Fatalf(
 				"failed to load x509 key pair: %v", err,
 			)
 		}
 	}
 
 	if p.Config.Ports.HTTPS != "" {
 		server.https = &http.Server{
 			Addr: fmt.Sprintf(
 				":%s", p.Config.Ports.HTTPS,
 			),
 			ErrorLog:       p.Log.Error,
 			Handler:        p.Handler,
 			ReadTimeout:    p.Config.Timeouts.Read,
 			MaxHeaderBytes: p.Config.MaxHeaderBytes,
 			IdleTimeout:    p.Config.Timeouts.Idle,
 			TLSConfig: &tls.Config{
 				Certificates: []tls.Certificate{certs},
 			},
 			WriteTimeout: p.Config.Timeouts.Write,
 		}
 	}
 	if p.Config.Ports.HTTP != "" {
 		server.http = &http.Server{
 			Addr:           fmt.Sprintf(":%s", p.Config.Ports.HTTP),
 			ErrorLog:       p.Log.Error,
 			ReadTimeout:    p.Config.Timeouts.Read,
 			MaxHeaderBytes: p.Config.MaxHeaderBytes,
 			IdleTimeout:    p.Config.Timeouts.Idle,
 			WriteTimeout:   p.Config.Timeouts.Write,
 		}
 
 		// If serving HTTPS, redirect from HTTP.
 		// Otherwise, serve the passed-in handler over HTTP.
 		if p.Config.Ports.HTTPS != "" {
 			server.http.Handler = &redirect.Handler{}
 		} else {
 			server.http.Handler = p.Handler
 		}
 	}
 
 	return server, nil
 }