add go fiber example

go-fiber-simple/LICENSE

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+MIT License
+
+Copyright (c) 2023 Hayden L
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

go-fiber-simple/README.md

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+# Go Fiber Example
+
+This repository contains an example of Go fiber application that is deployed on Dokploy.
+
+
+1. **Use Git Provider in Your Application**:
+   - Repository: `https://github.com/Dokploy/examples.git`
+   - Branch: `main`
+   - Build path: `/go-fiber-simple`
+
+4. **Click on Deploy**:
+   - Deploy your application by clicking the deploy button.
+
+5. **Generate a Domain**:
+    - Click on generate domain button.
+    - A new domain will be generated for you.
+    - You can use this domain to access your application.
+
+    
+If you need further assistance, join our [Discord server](https://discord.com/invite/2tBnJ3jDJc).

go-fiber-simple/cmd/api/healthcheck.go

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+package main
+
+import (
+	"net/http"
+)
+
+func (app *application) healthcheckHandler(w http.ResponseWriter, r *http.Request) {
+	data := map[string]string{
+		"status":  "ok",
+		"version": version,
+	}
+
+	// No need to add acess control origin headers. On other routes, that may be necessary
+	err := app.writeJSON(w, http.StatusOK, data, nil)
+	if err != nil {
+		app.logger.Error(err.Error())
+		http.Error(w, "server error", http.StatusInternalServerError)
+	}
+}

go-fiber-simple/cmd/api/helpers.go

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+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// The writeJSON() method is a generic helper for writing JSON to a response
+func (app *application) writeJSON(w http.ResponseWriter, sCode int, data any, headers http.Header) error {
+	marshalledJson, err := json.Marshal(data)
+
+	if err != nil {
+		return err
+	}
+
+	// Valid json requires newline
+	marshalledJson = append(marshalledJson, '\n')
+
+	for key, value := range headers {
+		w.Header()[key] = value
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(sCode)
+	w.Write(marshalledJson)
+
+	return nil
+}

go-fiber-simple/cmd/api/main.go

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+package main
+
+import (
+	"fmt"
+	"log/slog"
+	"net/http"
+	"os"
+	"strconv"
+	"time"
+)
+
+const version = "0.0.1"
+
+type config struct {
+	port int
+}
+
+type application struct {
+	config config
+	logger *slog.Logger
+}
+
+func main() {
+
+	var cfg config
+
+	// Try to read environment variable for port (given by railway). Otherwise use default
+	port := os.Getenv("PORT")
+	intPort, err := strconv.Atoi(port)
+	if err != nil {
+		intPort = 4000
+	}
+
+	// Set the port to run the API on
+	cfg.port = intPort
+
+	// create the logger
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+
+	// create the application
+	app := &application{
+		config: cfg,
+		logger: logger,
+	}
+
+	// create the server
+	srv := &http.Server{
+		Addr:         fmt.Sprintf(":%d", cfg.port),
+		Handler:      app.routes(),
+		IdleTimeout:  45 * time.Second,
+		ReadTimeout:  5 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		ErrorLog:     slog.NewLogLogger(logger.Handler(), slog.LevelError),
+	}
+
+	logger.Info("server started", "addr", srv.Addr)
+
+	// Start the server
+	err = srv.ListenAndServe()
+	logger.Error(err.Error())
+	os.Exit(1)
+
+}

go-fiber-simple/cmd/api/routes.go

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+package main
+
+import (
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+func (app *application) routes() *httprouter.Router {
+	router := httprouter.New()
+
+	// Define the available routes
+	router.HandlerFunc(http.MethodGet, "/v1/healthcheck", app.healthcheckHandler)
+
+	return router
+}

go-fiber-simple/go.mod

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+module goapi.railway.app
+
+go 1.21.7
+
+require github.com/julienschmidt/httprouter v1.3.0

go-fiber-simple/go.sum

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+github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U=
+github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=

go-fiber-simple/nixpacks.toml

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+[phases.build]
+cmds = ['''GOOS=linux GOARCH=amd64 go build -ldflags='-s' -o=./bin/linux_amd64/api ./cmd/api''']
+
+[start]
+cmd = './bin/linux_amd64/api'