Initial commit

pkg/behaivor/behaivor.go

@@ -0,0 +1,10 @@
+package behaivor
+
+import "log"
+
+// Crash the program if an error exists. Anxiety before panic
+func Anxiety(prefixMessage string, err error) {
+	if err != nil {
+		log.Fatalf("%v:\n\t%v", prefixMessage, err)
+	}
+}

pkg/file/file.go

@@ -0,0 +1,27 @@
+package file
+
+import (
+	"go_project/pkg/behaivor"
+	"os"
+)
+
+// Verification of the existence of a program with an emergency termination in case of an error
+func MustIsNotExist(filename string) (result bool) {
+	_, err := os.Stat(filename)
+	if err != nil {
+		result = os.IsNotExist(err)
+	} else {
+		return false
+	}
+	if result == false {
+		behaivor.Anxiety("Error checking the existence of the file", err)
+	}
+	return true
+}
+
+// Create a file with truncated data
+func MustCreate(filename string) {
+	file, err := os.Create(filename)
+	behaivor.Anxiety("File creating error", err)
+	file.Close()
+}

pkg/information/routes.go

@@ -0,0 +1,53 @@
+package information
+
+import (
+	"bytes"
+	"github.com/gorilla/mux"
+	"log"
+	"strings"
+)
+
+// Following prints all of the registered routes
+func AboutRoute(route *mux.Route, _ *mux.Router, _ []*mux.Route) error {
+	pathTemplate, err := route.GetPathTemplate()
+
+	var buffer bytes.Buffer
+
+	if err == nil {
+		buffer.WriteString("\n\t")
+		buffer.WriteString("ROUTE: ")
+		buffer.WriteString(pathTemplate)
+	}
+	pathRegexp, err := route.GetPathRegexp()
+	if err == nil {
+		buffer.WriteString("\n\t")
+		buffer.WriteString("Path regexp: ")
+		buffer.WriteString(pathRegexp)
+	}
+	queriesTemplates, err := route.GetQueriesTemplates()
+	if err == nil {
+		buffer.WriteString("\n\t")
+		buffer.WriteString("Queries templates: ")
+		buffer.WriteString(strings.Join(queriesTemplates, ","))
+	}
+	queriesRegexps, err := route.GetQueriesRegexp()
+	if err == nil {
+		buffer.WriteString("\n\t")
+		buffer.WriteString("Queries regexps: ")
+		buffer.WriteString(strings.Join(queriesRegexps, ","))
+	}
+	methods, err := route.GetMethods()
+	if err == nil {
+		buffer.WriteString("\n\t")
+		buffer.WriteString("Methods: ")
+		buffer.WriteString(strings.Join(methods, ","))
+	}
+
+	if len := buffer.Len(); len != 0 {
+
+		log.Println(buffer.String())
+
+	}
+
+	return nil
+}

pkg/marshaling/marshaling.go

@@ -0,0 +1,16 @@
+package marshaling
+
+import (
+	"encoding/json"
+	"go_project/pkg/behaivor"
+	"io"
+	"net/http"
+)
+
+// NOTE: Not used in this project
+func MustUnmarshalBody(r *http.Request, x interface{}) {
+	body, err := io.ReadAll(r.Body)
+	behaivor.Anxiety("Error reading the request body", err)
+	err = json.Unmarshal([]byte(body), x)
+	behaivor.Anxiety("Error unmarshaling the request body", err)
+}