Michael McGuinness
82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
package database
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import (
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"context"
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"database/sql"
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"fmt"
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"log"
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"os"
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"path"
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"github.com/golang-migrate/migrate/v4"
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_ "github.com/golang-migrate/migrate/v4/database/postgres"
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_ "github.com/golang-migrate/migrate/v4/source/file"
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_ "github.com/lib/pq"
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)
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func createDB() {
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driver := "postgres"
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conf := mustGetConfig()
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opts := ""
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if conf.disableSSL {
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opts += "sslmode=disable"
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}
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connStr := fmt.Sprintf("%s://%s:%s@%s:%d/?%s", driver, conf.user, conf.password, conf.host, conf.port.Int(), opts)
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db, err := sql.Open("postgres", connStr)
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if err != nil {
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log.Panicf("Error opening database: %v", err)
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}
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err = db.Ping()
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if err != nil {
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log.Panicf("Error pinging database: %v", err)
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}
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rs, err := db.Query(fmt.Sprintf("SELECT 'CREATE DATABASE %s' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '%s')", conf.name, conf.name))
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if err != nil {
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log.Panicf("Error creating database: %v", err)
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}
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if rs.Next() {
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log.Printf("Database created: %s", conf.name)
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} else {
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log.Printf("Database already exists: %s", conf.name)
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}
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}
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type MigrationConfig struct {
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BasePath string
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}
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func RunMigrations(ctx context.Context, config *MigrationConfig) {
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createDB()
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connStr := mustGetURI()
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basePath := config.BasePath
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if basePath == "" {
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basePath = os.Getenv("PWD")
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}
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migPath := "file://" + path.Join(basePath, "database/migrations")
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m, err := migrate.New(
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migPath,
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connStr.String(),
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)
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if err != nil {
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log.Panicf("failed to create migrate instance: %v", err)
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}
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err = m.Up()
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if err == migrate.ErrNoChange {
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log.Println("No changes required")
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} else if err != nil {
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log.Panicf("failed to apply migrations: %v", err)
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} else {
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log.Println("Migrations applied successfully!")
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}
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}
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