vendor dependencies with dep

vendor/github.com/go-pg/migrations/example/main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/go-pg/migrations"
+	"github.com/go-pg/pg"
+)
+
+const usageText = `This program runs command on the db. Supported commands are:
+  - init - creates gopg_migrations table.
+  - up - runs all available migrations.
+  - down - reverts last migration.
+  - reset - reverts all migrations.
+  - version - prints current db version.
+  - set_version [version] - sets db version without running migrations.
+
+Usage:
+  go run *.go <command> [args]
+`
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+
+	db := pg.Connect(&pg.Options{
+		User:     "postgres",
+		Database: "pg_migrations_example",
+	})
+
+	oldVersion, newVersion, err := migrations.Run(db, flag.Args()...)
+	if err != nil {
+		exitf(err.Error())
+	}
+	if newVersion != oldVersion {
+		fmt.Printf("migrated from version %d to %d\n", oldVersion, newVersion)
+	} else {
+		fmt.Printf("version is %d\n", oldVersion)
+	}
+}
+
+func usage() {
+	fmt.Printf(usageText)
+	flag.PrintDefaults()
+	os.Exit(2)
+}
+
+func errorf(s string, args ...interface{}) {
+	fmt.Fprintf(os.Stderr, s+"\n", args...)
+}
+
+func exitf(s string, args ...interface{}) {
+	errorf(s, args...)
+	os.Exit(1)
+}