refactoring to golden standards

internal/domains/domains.go

@@ -3,14 +3,28 @@ package domains
 var Names T_Domains
 
 type T_Domains struct {
-	Domains []T_Domain `json:"Domains"`
+	Domains  []T_Domain  `json:"Domains"`
+	Backends []T_Backend `json:"Backedns"`
+	Hosts    []string    `json:"Hosts"`
 }
 
 type T_Domain struct {
 	DomainName string `json:"DomainName"`
 	RealServer string `json:"RealServer"`
 	RealPort   string `json:"RealPort"`
-	Status     string `json:"Satus"`
+
+	HTTPS        bool `json:"HTTPS"`
+	AddForwarded bool `json:"AddForwarded"`
+
+	KeyFile  string `json:"KeyFile"`
+	CertFile string `json:"CertFile"`
+
+	Status string `json:"Satus"`
+}
+
+type T_Backend struct {
+	Name          string `json:"Name"`
+	ConnectString string `json:"ConnectString"`
 }
 
 const (

internal/management/management.go

@@ -10,15 +10,17 @@ import (
 	"time"
 
 	"github.com/asaskevich/govalidator"
-	domains "github.com/cr3a70r/shield/internal/Domains"
+	"github.com/cr3a70r/shield/internal/domains"
 )
 
 var Settings T_Management
 
 type T_Management struct {
-	Users   []T_User           `json:"Users"`
-	Domains []domains.T_Domain `json:"Names"`
-	Debug   bool               `json:"Debug"`
+	Users    []T_User            `json:"Users"`
+	Domains  []domains.T_Domain  `json:"Names"`
+	Backends []domains.T_Backend `json:"Backedns"`
+	Hosts    []string            `json:"Hosts"`
+	Debug    bool                `json:"Debug"`
 }
 
 type T_User struct {

internal/management/webserver.go

@@ -10,11 +10,11 @@ import (
 	"text/template"
 
 	"github.com/asaskevich/govalidator"
-	"github.com/cr3a70r/shield/Utils"
+	"github.com/cr3a70r/shield/internal/domains"
+	"github.com/cr3a70r/shield/internal/utils"
+
 	"github.com/gorilla/mux"
 	"github.com/gorilla/securecookie"
-
-	domains "github.com/cr3a70r/shield/internal/Domains"
 )
 
 var hashKey = []byte("ckjstkldx-rlkjcmskl-rdlskjtmd")
@@ -41,7 +41,7 @@ func StartWebserver(addr string) {
 }
 
 func health(writer http.ResponseWriter, req *http.Request) {
-	Utils.RespondJSON("Unknown state", 200, writer)
+	utils.RespondJSON("Unknown state", 200, writer)
 }
 
 func renderIndex(w http.ResponseWriter, r *http.Request) {
@@ -231,17 +231,17 @@ func requireAuth(h http.Handler) http.Handler {
 
 func api_domains(w http.ResponseWriter, r *http.Request) {
 	if r.Method == "GET" {
-		Utils.RespondJSON(Settings.Domains, http.StatusOK, w)
+		utils.RespondJSON(Settings.Domains, http.StatusOK, w)
 	}
 	if r.Method == "POST" {
-		var msgJSON Utils.Msg
+		var msgJSON utils.Msg
 		var req domains.T_Domain
 		err := json.NewDecoder(r.Body).Decode(&req)
 		if err != nil {
 			log.Println("webserver.api_domains: " + err.Error())
 
 			msgJSON.Msg = err.Error()
-			Utils.RespondJSON(msgJSON, http.StatusBadRequest, w)
+			utils.RespondJSON(msgJSON, http.StatusBadRequest, w)
 		}
 
 		Settings.AddDomainByDomain(req)
@@ -251,11 +251,11 @@ func api_domains(w http.ResponseWriter, r *http.Request) {
 			log.Println("webserver.api_domains: " + err.Error())
 
 			msgJSON.Msg = err.Error()
-			Utils.RespondJSON(msgJSON, http.StatusBadRequest, w)
+			utils.RespondJSON(msgJSON, http.StatusBadRequest, w)
 		}
 
 		msgJSON.Msg = "OK"
-		Utils.RespondJSON(msgJSON, http.StatusOK, w)
+		utils.RespondJSON(msgJSON, http.StatusOK, w)
 
 	}
 }
@@ -264,8 +264,8 @@ func api_domain(w http.ResponseWriter, r *http.Request) {
 	httpVars := mux.Vars(r)
 	id := httpVars["id"]
 
-	var msgJSON Utils.Msg
+	var msgJSON utils.Msg
 	msgJSON.Msg = id
 
-	Utils.RespondJSON(msgJSON, http.StatusBadRequest, w)
+	utils.RespondJSON(msgJSON, http.StatusBadRequest, w)
 }

internal/proxy/proxy.go

@@ -9,21 +9,22 @@ import (
 	"net/http/httputil"
 	"net/url"
 
-	logger "github.com/cr3a70r/shield/Utils"
+	"github.com/cr3a70r/shield/internal/utils"
 )
 
+// ---
 type ProxyHttpServer struct {
 	ctx context.Context
 	http.Server
 	AddressAndPort string
 	Name           string
-	logger         *logger.Logger
+	logger         *utils.Logger
 }
 
 type ReverseProxy struct {
 	url    *url.URL
 	proxy  *httputil.ReverseProxy
-	logger *logger.Logger
+	logger *utils.Logger
 	port   string
 }
 
@@ -40,7 +41,7 @@ type Config struct {
 	Override Override
 }
 
-func NewProxy(urlString string, transport http.RoundTripper, director *httputil.ReverseProxy, logger *logger.Logger, port string) *ReverseProxy {
+func NewProxy(urlString string, transport http.RoundTripper, director *httputil.ReverseProxy, logger *utils.Logger, port string) *ReverseProxy {
 	providedUrl, err := url.Parse(urlString)
 
 	if err != nil {
@@ -80,6 +81,9 @@ func (p *ReverseProxy) Handler(w http.ResponseWriter, r *http.Request) {
 		})
 	}
 
+	//We may load balance here:
+	//r.Host = balanced IP.
+
 	p.proxy.ServeHTTP(w, r)
 }
 

internal/utils/jsonlog.go

@@ -1,4 +1,4 @@
-package Utils
+package utils
 
 import (
 	"encoding/json"

internal/utils/utils.go

@@ -1,4 +1,4 @@
-package Utils
+package utils
 
 import (
 	"encoding/json"

internal/workerpool/task.go

@@ -0,0 +1,18 @@
+package workerpool
+
+import "fmt"
+
+type Task struct {
+	Err  error
+	Data interface{}
+	f    func(interface{}) error
+}
+
+func NewTask(f func(interface{}) error, data interface{}) *Task {
+	return &Task{f: f, Data: data}
+}
+
+func process(workerID int, task *Task) {
+	fmt.Println("Worker %d processes task %v\n", workerID, task.Data)
+	task.Err = task.f(task.Data)
+}

internal/workerpool/worker.go

@@ -0,0 +1,6 @@
+package workerpool
+
+type Worker struct {
+	ID       int
+	taskChan chan *Task
+}

shield.go

@@ -10,9 +10,9 @@ import (
 	"runtime"
 	"time"
 
-	management "github.com/cr3a70r/shield/Management"
-	proxy "github.com/cr3a70r/shield/Proxy"
-	"github.com/cr3a70r/shield/Utils"
+	"github.com/cr3a70r/shield/internal/management"
+	"github.com/cr3a70r/shield/internal/proxy"
+	"github.com/cr3a70r/shield/internal/utils"
 	"github.com/xlab/closer"
 )
 
@@ -27,7 +27,7 @@ func main() {
 
 	closer.Bind(cleanup)
 
-	logger := Utils.New(os.Stdout, Utils.LevelInfo)
+	logger := utils.New(os.Stdout, utils.LevelInfo)
 
 	test := workingProxyForDomain(logger, "test.dev.corp.daydev.org", "10.10.20.40", "9090")
 	http.HandleFunc("/", test.Handler)
@@ -46,6 +46,11 @@ func main() {
 
 	management.Settings.Initialize()
 
+	//Building hosts from configured domains
+	for _, d := range management.Settings.Domains {
+		management.Settings.Hosts = append(management.Settings.Hosts, d.DomainName)
+	}
+
 	fmt.Println(runtime.NumGoroutine())
 
 	go management.StartWebserver("0.0.0.0:8080")
@@ -57,7 +62,7 @@ func cleanup() {
 	fmt.Println("Closing Application")
 }
 
-func workingProxyForDomain(logger *Utils.Logger, domain string, realServer string, port string) *proxy.ReverseProxy {
+func workingProxyForDomain(logger *utils.Logger, domain string, realServer string, port string) *proxy.ReverseProxy {
 	transport := &http.Transport{
 		DialContext: (&net.Dialer{
 			Timeout: 5 * time.Second,

static/domains.html

@@ -9,7 +9,7 @@ Protection | Shield
     <thead>
       <tr>
         <th scope="col">Domain</th>
-        <th scope="col">Server</th>
+        <th scope="col">Backend</th>
         <th scope="col">Port</th>
         <th scope="col">Action</th>
       </tr>
@@ -57,7 +57,7 @@ Protection | Shield
         <div class="modal-body">
             <label for="inputEmail" class="sr-only">Domain Name</label>
             <input type="text" id="Domain" name="Domain" class="form-control" placeholder="contoso.co" required autofocus>
-            <label for="inputEmail" class="sr-only">Server</label>
+            <label for="inputEmail" class="sr-only">Backend</label>
             <input type="text" id="Server" name="Server" class="form-control" placeholder="FQDN or IP address" required>
             <label for="inputEmail" class="sr-only">Port</label>
             <input type="text" id="Port" name="Port" class="form-control" placeholder="443 or any other" required>
@@ -82,8 +82,7 @@ function AddDomain() {
         "RealPort": $("#Port").val(),
     }),
     success: function(result) {
-        console.log("DONE!")
-        console.log(result)
+        window.location.replace("/domains");
     }
  })
 

static/template.html

@@ -33,7 +33,7 @@
                 <a class="nav-link" href="/domains">Domains</a>
               </li>
               <li class="nav-item">
-                <a class="nav-link" href="/routing">Tunnels</a>
+                <a class="nav-link" href="/backends">Backends</a>
               </li>
               <li class="nav-item">
                 <a class="nav-link" href="/acls">ACLs</a>