Add first routes and log middleware handling

bootserver/bootoption/bootoption.go

@@ -0,0 +1,14 @@
+package bootoption
+
+type EFIApp struct {
+	Name        string `json:"name"`
+	Description string `json:"description"`
+	Path        string `json:"path"`
+}
+
+type Client struct {
+	IP             string   `json:"ip"`
+	Name           string   `json:"name"`
+	Options        []EFIApp `json:"options"`
+	SelectedOption string   `json:"selected_option"`
+}

bootserver/controllers/client/client.go

@@ -0,0 +1,85 @@
+package client
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+
+	"git.faercol.me/faercol/http-boot-server/bootserver/helpers"
+	"git.faercol.me/faercol/http-boot-server/bootserver/services"
+	"github.com/sirupsen/logrus"
+)
+
+const BootRoute = "/boot"
+
+type BootController struct {
+	clientService *services.ClientHandlerService
+	l             *logrus.Logger
+}
+
+func NewBootController(logger *logrus.Logger) *BootController {
+	return &BootController{
+		clientService: services.NewClientHandlerService(),
+		l:             logger,
+	}
+}
+
+func (bc *BootController) getBootOption(clientIP string, w http.ResponseWriter, r *http.Request) (int, []byte, error) {
+	bootOption, err := bc.clientService.GetClientSelectedBootOption(clientIP)
+	if err != nil {
+		return http.StatusInternalServerError, nil, fmt.Errorf("failed to get boot option: %w", err)
+	}
+
+	dat, err := json.Marshal(bootOption)
+	if err != nil {
+		return http.StatusInternalServerError, nil, fmt.Errorf("failed to serialize body")
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	return http.StatusOK, dat, nil
+}
+
+func (bc *BootController) setBootOption(clientIP string, w http.ResponseWriter, r *http.Request) (int, error) {
+	dat, err := io.ReadAll(r.Body)
+	if err != nil {
+		return http.StatusInternalServerError, fmt.Errorf("failed to read body: %w", err)
+	}
+	var option string
+	if err := json.Unmarshal(dat, &option); err != nil {
+		return http.StatusInternalServerError, fmt.Errorf("failed to parse body: %w", err)
+	}
+
+	if err := bc.clientService.SetClientBootOption(clientIP, option); err != nil {
+		return http.StatusInternalServerError, fmt.Errorf("failed to set boot option for client: %w", err)
+	}
+
+	return http.StatusAccepted, nil
+}
+
+func (bc *BootController) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	clientIP, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err != nil {
+		bc.l.Errorf("Failed to read remote IP: %s", err.Error())
+		helpers.HandleResponse(w, r, http.StatusInternalServerError, nil, bc.l)
+		return
+	}
+
+	var returncode int
+	var content []byte
+
+	switch r.Method {
+	case http.MethodGet:
+		returncode, content, err = bc.getBootOption(clientIP, w, r)
+	case http.MethodPut:
+		returncode, err = bc.setBootOption(clientIP, w, r)
+	default:
+		returncode = http.StatusMethodNotAllowed
+	}
+
+	if err != nil {
+		bc.l.Errorf("An error occured while handling boot request: %q", err.Error())
+	}
+	helpers.HandleResponse(w, r, returncode, content, bc.l)
+}

bootserver/controllers/client/enroll.go

@@ -0,0 +1,61 @@
+package client
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+
+	"git.faercol.me/faercol/http-boot-server/bootserver/bootoption"
+	"git.faercol.me/faercol/http-boot-server/bootserver/helpers"
+	"git.faercol.me/faercol/http-boot-server/bootserver/services"
+	"github.com/sirupsen/logrus"
+)
+
+const EnrollRoute = "/enroll"
+
+type EnrollController struct {
+	clientService *services.ClientHandlerService
+	l             *logrus.Logger
+}
+
+func NewEnrollController(l *logrus.Logger) *EnrollController {
+	return &EnrollController{
+		clientService: services.NewClientHandlerService(),
+		l:             l,
+	}
+}
+
+func (ec *EnrollController) enrollMachine(w http.ResponseWriter, r *http.Request) (int, error) {
+	if r.Method != http.MethodPost {
+		return http.StatusMethodNotAllowed, nil
+	}
+	clientIP, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err != nil {
+		return http.StatusInternalServerError, fmt.Errorf("failed to read remote IP: %w", err)
+	}
+
+	dat, err := io.ReadAll(r.Body)
+	if err != nil {
+		return http.StatusInternalServerError, fmt.Errorf("failed to read body: %w", err)
+	}
+
+	var client bootoption.Client
+	if err := json.Unmarshal(dat, &client); err != nil {
+		return http.StatusInternalServerError, fmt.Errorf("failed to parse body: %w", err)
+	}
+	client.IP = clientIP
+
+	ec.clientService.AddClient(&client)
+	ec.l.Infof("Added client %s", clientIP)
+	return http.StatusAccepted, nil
+}
+
+func (ec *EnrollController) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	returncode, err := ec.enrollMachine(w, r)
+	if err != nil {
+		ec.l.Errorf("Error handling client enrollement: %s", err.Error())
+	}
+	helpers.HandleResponse(w, r, returncode, nil, ec.l)
+}

bootserver/helpers/helpers.go

@@ -0,0 +1,31 @@
+package helpers
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/sirupsen/logrus"
+)
+
+type ContextKey string
+
+const ResponseInfoKey ContextKey = "response_info"
+
+type ResponseInfo struct {
+	ReturnCode    int
+	ContentLength int
+}
+
+func HandleResponse(w http.ResponseWriter, r *http.Request, returncode int, content []byte, l *logrus.Logger) {
+	w.WriteHeader(returncode)
+	n, err := w.Write(content)
+	if err != nil {
+		l.Errorf("Failed to write content to response: %q", err.Error())
+	}
+	if n != len(content) {
+		l.Errorf("Failed to write the entire response (%d/%d)", n, len(content))
+	}
+
+	contextedReq := r.WithContext(context.WithValue(r.Context(), ResponseInfoKey, ResponseInfo{ReturnCode: returncode, ContentLength: len(content)}))
+	*r = *contextedReq
+}

bootserver/logger/logger.go

@@ -7,4 +7,7 @@ var L *logrus.Logger
 func Init(level logrus.Level) {
 	L = logrus.New()
 	L.SetLevel(level)
+	L.SetFormatter(&logrus.TextFormatter{
+		ForceColors: true,
+	})
 }

bootserver/middlewares/logger.go

@@ -0,0 +1,39 @@
+package middlewares
+
+import (
+	"net"
+	"net/http"
+	"time"
+
+	"git.faercol.me/faercol/http-boot-server/bootserver/helpers"
+	"github.com/sirupsen/logrus"
+)
+
+var defaultResponseInfo = helpers.ResponseInfo{
+	ReturnCode:    -1,
+	ContentLength: -1,
+}
+
+type LoggerMiddleware struct {
+	l *logrus.Logger
+}
+
+func (lm *LoggerMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	responseInfo, ok := r.Context().Value(helpers.ResponseInfoKey).(helpers.ResponseInfo)
+	if !ok {
+		lm.l.Errorf("Failed to read response info from context, got %v", r.Context().Value("response_info"))
+		responseInfo = defaultResponseInfo
+	}
+	method := r.Method
+	route := r.RequestURI
+	currentTime := time.Now().UTC()
+	httpVersion := r.Proto
+
+	clientIP, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err != nil {
+		lm.l.Errorf("Failed to read remote IP: %s", err.Error())
+		clientIP = "unknown"
+	}
+
+	lm.l.Infof(`%s - [%v] "%s %s %s" %d %d`, clientIP, currentTime, method, route, httpVersion, responseInfo.ReturnCode, responseInfo.ContentLength)
+}

bootserver/middlewares/middlewarechain.go

@@ -0,0 +1,23 @@
+package middlewares
+
+import (
+	"net/http"
+
+	"github.com/sirupsen/logrus"
+)
+
+type MiddlewareChains struct {
+	handlers []http.Handler
+}
+
+func (mc *MiddlewareChains) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	for _, h := range mc.handlers {
+		h.ServeHTTP(rw, r)
+	}
+}
+
+func WithLogger(handler http.Handler, l *logrus.Logger) *MiddlewareChains {
+	return &MiddlewareChains{
+		handlers: []http.Handler{handler, &LoggerMiddleware{l}},
+	}
+}

bootserver/server/server.go

@@ -8,19 +8,24 @@ import (
 	"net/http"
 	"os"
 
+	"git.faercol.me/faercol/http-boot-server/bootserver/bootoption"
 	"git.faercol.me/faercol/http-boot-server/bootserver/config"
+	"git.faercol.me/faercol/http-boot-server/bootserver/controllers/client"
+	"git.faercol.me/faercol/http-boot-server/bootserver/middlewares"
 	"github.com/sirupsen/logrus"
 )
 
 type Server struct {
-	ctx        context.Context
-	cancel     context.CancelFunc
-	httpSrv    *http.Server
-	listener   net.Listener
-	serverMode config.ListeningMode
-	address    string
-	handler    *http.ServeMux
-	l          *logrus.Logger
+	ctx         context.Context
+	cancel      context.CancelFunc
+	httpSrv     *http.Server
+	listener    net.Listener
+	serverMode  config.ListeningMode
+	address     string
+	handler     *http.ServeMux
+	l           *logrus.Logger
+	clients     map[string]bootoption.Client
+	controllers map[string]http.Handler
 }
 
 func newUnixListener(sockPath string) (net.Listener, error) {
@@ -59,6 +64,11 @@ func New(appConf *config.AppConfig, logger *logrus.Logger) (*Server, error) {
 		panic(fmt.Errorf("unexpected listening mode %v", appConf.ServerMode))
 	}
 
+	controllers := map[string]http.Handler{
+		client.BootRoute:   middlewares.WithLogger(client.NewBootController(logger), logger),
+		client.EnrollRoute: middlewares.WithLogger(client.NewEnrollController(logger), logger),
+	}
+
 	m := http.NewServeMux()
 
 	return &Server{
@@ -66,15 +76,19 @@ func New(appConf *config.AppConfig, logger *logrus.Logger) (*Server, error) {
 		httpSrv: &http.Server{
 			Handler: m,
 		},
-		listener:   listener,
-		l:          logger,
-		serverMode: appConf.ServerMode,
-		address:    addr,
+		listener:    listener,
+		l:           logger,
+		serverMode:  appConf.ServerMode,
+		address:     addr,
+		clients:     make(map[string]bootoption.Client),
+		controllers: controllers,
 	}, nil
 }
 
 func (s *Server) initMux() {
-	s.handler.HandleFunc("/", s.statusHandler)
+	for r, c := range s.controllers {
+		s.handler.Handle(r, c)
+	}
 }
 
 func (s *Server) Run(ctx context.Context) {
@@ -96,12 +110,3 @@ func (s *Server) Run(ctx context.Context) {
 func (s *Server) Done() <-chan struct{} {
 	return s.ctx.Done()
 }
-
-func (s *Server) statusHandler(w http.ResponseWriter, r *http.Request) {
-	if r.Method != http.MethodGet {
-		w.WriteHeader(http.StatusMethodNotAllowed)
-		return
-	}
-
-	w.Write([]byte("Hello world!"))
-}

bootserver/services/services.go

@@ -0,0 +1,58 @@
+package services
+
+import (
+	"errors"
+
+	"git.faercol.me/faercol/http-boot-server/bootserver/bootoption"
+)
+
+var ErrUnknownClient = errors.New("unknown client")
+var ErrUnselectedBootOption = errors.New("unselected boot option")
+var ErrUnknownBootOption = errors.New("unknown boot option")
+
+type ClientHandlerService struct {
+	clients map[string]*bootoption.Client
+}
+
+func NewClientHandlerService() *ClientHandlerService {
+	return &ClientHandlerService{
+		clients: make(map[string]*bootoption.Client),
+	}
+}
+
+func (chs *ClientHandlerService) AddClient(client *bootoption.Client) {
+	chs.clients[client.IP] = client
+}
+
+func (chs *ClientHandlerService) GetClientSelectedBootOption(client string) (*bootoption.EFIApp, error) {
+	clientDetails, ok := chs.clients[client]
+	if !ok {
+		return nil, ErrUnknownClient
+	}
+
+	if clientDetails.SelectedOption == "" {
+		return nil, ErrUnselectedBootOption
+	}
+
+	for _, o := range clientDetails.Options {
+		if o.Name == clientDetails.SelectedOption {
+			return &o, nil
+		}
+	}
+	return nil, ErrUnknownBootOption
+}
+
+func (chs *ClientHandlerService) SetClientBootOption(client, option string) error {
+	clientDetails, ok := chs.clients[client]
+	if !ok {
+		return ErrUnknownClient
+	}
+
+	for _, o := range clientDetails.Options {
+		if o.Name == option {
+			clientDetails.SelectedOption = option
+			return nil
+		}
+	}
+	return ErrUnknownBootOption
+}