Merge pull request #29 from iquzart/hexagonal_structure

Restructure

Containerfile

@@ -1,5 +1,5 @@
 # Start from the latest golang base image
-FROM golang:1.16-alpine as  build-env
+FROM golang:1.20-alpine as  build-env
 
 # Set the Current Working Directory inside the container
 WORKDIR /src
@@ -14,7 +14,7 @@ RUN go mod download
 COPY . .
 
 # Build the Go app
-RUN go build -o app .
+RUN go build -o app cmd/app/main.go
 
 # Final stage
 FROM alpine:latest
@@ -25,14 +25,12 @@ RUN apk update && rm -rf /var/cache/apk/*
 # Maintainer Info
 LABEL maintainer="Muhammed Iqbal <iquzart@hotmail.com>"
 
-# Set GIN Mode as Release
-ENV GIN_MODE=release
-
-# Set environment variable default value
-ENV BANNER="Hello from Go App"
-
-# Container PORT
-ENV PORT="8080"
+# Set Environement variables
+ENV \
+    PORT="8080" \
+    SERVICE_NAME="go-app" \
+    BANNER="Hello from Go App" \
+    GIN_MODE="release"
 
 # Create non-root account to run the container
 RUN adduser go -h /app -u 1000 -D

Makefile

@@ -0,0 +1,40 @@
+.DEFAULT_GOAL := help
+.PHONY: help clean build run docker-build docker-run docker-stop
+
+# Define variables
+BINARY_NAME := go-app
+DOCKER_IMAGE := make-go-app
+DOCKER_CONTAINER := make-go-app
+MAIN_FILE := cmd/app/main.go
+LDFLAGS := -ldflags="-s -w"
+
+help: ## Display this help message
+	@echo "Usage: make <command>"
+	@echo ""
+	@echo "Commands:"
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
+
+clean: ## Remove binary file and container resources
+	rm -f $(BINARY_NAME)
+	docker stop $(DOCKER_CONTAINER) || true
+	docker rm $(DOCKER_CONTAINER) || true
+	docker rmi $(DOCKER_IMAGE) || true
+
+build: ## Build the binary file
+	go build $(LDFLAGS) -o $(BINARY_NAME) $(MAIN_FILE)
+
+run: ## Build and run the binary file
+	go run $(LDFLAGS) $(MAIN_FILE)
+
+docker-build: ## Build Docker image
+	docker build -t $(DOCKER_IMAGE) . -f ./Containerfile
+
+docker-run: ## Run Docker container
+	@if ! docker image inspect $(DOCKER_IMAGE) >/dev/null 2>&1; then \
+		make docker-build; \
+	fi
+	docker run -d -p 8080:8080 --name $(DOCKER_CONTAINER) $(DOCKER_IMAGE)
+
+
+docker-stop: ## Stop Docker container
+	docker stop $(DOCKER_CONTAINER)

cmd/app/main.go

@@ -0,0 +1,8 @@
+package main
+
+import "go-app/pkg/server"
+
+func main() {
+	// Start the server
+	server.Run()
+}

config/config.go

@@ -0,0 +1,39 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+// Server contains the HTTP server configurations.
+type ServerConfigs struct {
+	Port             string
+	GracefulShutdown bool
+	ServiceName      string
+}
+
+// NewServer creates a new Server instance with default values.
+func GetServerConfigs() *ServerConfigs {
+	return &ServerConfigs{
+		Port:             fmt.Sprintf(":%s", getEnvOrDefault("PORT", "8080")),
+		GracefulShutdown: getEnvOrDefaultBool("ENABLE_GRACEFUL_SHUTDOWN", true),
+		ServiceName:      getEnvOrDefault("SERVICE_NAME", "go-app"),
+	}
+}
+
+func getEnvOrDefault(key, defaultValue string) string {
+	value := os.Getenv(key)
+	if value == "" {
+		return defaultValue
+	}
+	return value
+}
+
+func getEnvOrDefaultBool(key string, defaultValue bool) bool {
+	value, err := strconv.ParseBool(os.Getenv(key))
+	if err != nil {
+		return defaultValue
+	}
+	return value
+}