make service runnable

Makefile

@@ -11,6 +11,9 @@ workdir:
 
 build: workdir/service
 
+build-native: $(GOFILES)
+	go build -o workdir/native-service .
+
 workdir/service: $(GOFILES)
 	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -o workdir/service .
 

db/migrations/001_contacts.up.sql

@@ -1,5 +1,5 @@
-CREATE TABLE contacts (
+CREATE TABLE IF NOT EXISTS contacts (
     id SERIAL PRIMARY KEY,
     email varchar(255) UNIQUE NOT NULL,
     name varchar(255) NOT NULL
-);
+);

main.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/circleci/cci-demo-docker/service"
+	_ "github.com/mattes/migrate/driver/postgres"
+	"github.com/mattes/migrate/migrate"
+)
+
+func main() {
+	db := SetupDB()
+	server := service.NewServer(db)
+	http.HandleFunc("/", server.ServeHTTP)
+	http.ListenAndServe(":8080", nil)
+}
+
+func SetupDB() *service.Database {
+	databaseUrl := os.Getenv("DATABASE_URL")
+	if databaseUrl == "" {
+		panic("DATABASE_URL must be set!")
+	}
+
+	allErrors, ok := migrate.ResetSync(databaseUrl, "./db/migrations")
+	if !ok {
+		panic(fmt.Sprintf("%+v", allErrors))
+	}
+
+	db, err := sql.Open("postgres", databaseUrl)
+	if err != nil {
+		panic(fmt.Sprintf("Unable to open DB connection: %+v", err))
+	}
+
+	return &service.Database{db}
+}