feat: Set up project scaffolding with Docker Compose, Gin webserver, and Redis

.env.example

@@ -0,0 +1,6 @@
+PORT=4000
+
+# REDIS_HOST=<auto_set_up_via_docker_compose>
+REDIS_PORT=6379
+REDIS_PASSWORD=password
+REDIS_DATABASE=0

.gitignore

@@ -0,0 +1,5 @@
+# Environment variables
+.env
+
+# Built binaries
+/bin

Dockerfile

@@ -0,0 +1,8 @@
+FROM golang:1.23-alpine
+
+WORKDIR /app
+COPY . .
+
+RUN go install -mod=mod github.com/githubnemo/CompileDaemon
+
+ENTRYPOINT CompileDaemon --build="go build -o ./bin/api/main ./cmd/api/main.go" --command=./bin/api/main

cmd/api/main.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"sync"
+	"time"
+
+	"github.com/hookdeck/EventKit/internal/config"
+	"github.com/hookdeck/EventKit/internal/router"
+)
+
+func run(ctx context.Context) error {
+	ctx, cancel := signal.NotifyContext(ctx, os.Interrupt)
+	defer cancel()
+
+	r := router.New()
+	httpServer := &http.Server{
+		Addr:    fmt.Sprintf(":%d", config.Port),
+		Handler: r,
+	}
+	go func() {
+		log.Printf("listening on %s\n", httpServer.Addr)
+		if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			fmt.Fprintf(os.Stderr, "error listening and serving: %s\n", err)
+		}
+	}()
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		<-ctx.Done()
+		// make a new context for Shutdown
+		shutdownCtx := context.Background()
+		shutdownCtx, cancel := context.WithTimeout(ctx, 10*time.Second)
+		defer cancel()
+		if err := httpServer.Shutdown(shutdownCtx); err != nil {
+			fmt.Fprintf(os.Stderr, "error shutting down http server: %s\n", err)
+		}
+	}()
+	wg.Wait()
+
+	return nil
+}
+
+func main() {
+	ctx := context.Background()
+	if err := run(ctx); err != nil {
+		fmt.Fprintf(os.Stderr, "%s\n", err)
+		os.Exit(1)
+	}
+}

docker-compose.yml

@@ -0,0 +1,33 @@
+name: "eventkit"
+
+services:
+  api:
+    build: .
+    volumes:
+      - .:/app
+    depends_on:
+      - redis
+    ports:
+      - "${PORT}:${PORT}"
+    environment:
+      PORT: ${PORT}
+      REDIS_HOST: redis
+      REDIS_PORT: ${REDIS_PORT}
+      REDIS_PASSWORD: ${REDIS_PASSWORD}
+      REDIS_DATABASE: ${REDIS_DATABASE}
+
+  redis:
+    image: redis:7.4-alpine
+    restart: always
+    ports:
+      - "${REDIS_PORT}:${REDIS_PORT}"
+    command: >
+      redis-server
+        --save 20 1
+        --requirepass ${REDIS_PASSWORD}
+    volumes:
+      - redis:/data
+
+volumes:
+  redis:
+    driver: local

go.mod

@@ -1,3 +1,40 @@
 module github.com/hookdeck/EventKit
 
 go 1.23.0
+
+require (
+	github.com/gin-gonic/gin v1.10.0
+	github.com/google/uuid v1.6.0
+	github.com/redis/go-redis/v9 v9.6.1
+)
+
+require (
+	github.com/bytedance/sonic v1.11.6 // indirect
+	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cloudwego/base64x v0.1.4 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.22.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,101 @@
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+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
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internal/config/config.go

@@ -0,0 +1,33 @@
+package config
+
+import (
+	"log"
+	"os"
+	"strconv"
+)
+
+var (
+	Port = 0
+
+	RedisHost     = ""
+	RedisPort     = ""
+	RedisPassword = ""
+	RedisDatabase = 0
+)
+
+func init() {
+	Port = mustInt(os.Getenv("PORT"))
+
+	RedisHost = os.Getenv("REDIS_HOST")
+	RedisPort = os.Getenv("REDIS_PORT")
+	RedisPassword = os.Getenv("REDIS_PASSWORD")
+	RedisDatabase = mustInt(os.Getenv("REDIS_DATABASE"))
+}
+
+func mustInt(s string) int {
+	i, err := strconv.Atoi(s)
+	if err != nil {
+		log.Fatalf("failed to parse %s as int", s)
+	}
+	return i
+}