feat: initial commit

.env.example

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+DB_DSN=postgres://username:password@localhost/scheduling?sslmode=disable

.gitignore

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+.env

.vscode/settings.json

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+{
+    "go.inferGopath": false
+}

db.go

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+package main
+
+import (
+	"database/sql"
+	"log"
+	"os"
+
+	_ "github.com/lib/pq"
+)
+
+func initDBConnection() *sql.DB {
+	connStr := os.Getenv("DB_DSN")
+	db, err := sql.Open("postgres", connStr)
+
+	if err != nil {
+		log.Panic("couldn't connect to database", err)
+	}
+
+	return db
+}

go.mod

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+module github.com/dipeshdulal/event-scheduling
+
+go 1.15
+
+require (
+	github.com/joho/godotenv v1.3.0
+	github.com/lib/pq v1.9.0
+)

go.sum

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+github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
+github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
+github.com/lib/pq v1.9.0 h1:L8nSXQQzAYByakOFMTwpjRoHsMJklur4Gi59b6VivR8=
+github.com/lib/pq v1.9.0/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=

main.go

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+package main
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+
+	"github.com/joho/godotenv"
+)
+
+// Test structure
+type Test struct {
+	ID   uint
+	Name string
+}
+
+func main() {
+	ctx, cancel := context.WithCancel(context.Background())
+	interrupt := make(chan os.Signal, 1)
+
+	if err := godotenv.Load(); err != nil {
+		log.Fatal("Error loading .env file ", err)
+	}
+
+	db := initDBConnection()
+
+	rows, err := db.Query("SELECT id, name FROM public.test")
+
+	if err != nil {
+		log.Panic(err)
+	}
+
+	go func() {
+		for rows.Next() {
+			var test Test
+			rows.Scan(&test.ID, &test.Name)
+			log.Printf("test: %v\n", test)
+		}
+	}()
+
+	signal.Notify(interrupt, os.Interrupt)
+
+	go func() {
+		for range interrupt {
+			log.Print("Interrupt received closing...")
+			cancel()
+		}
+	}()
+
+	<-ctx.Done()
+}