134 lines
3.1 KiB
Go
134 lines
3.1 KiB
Go
package db
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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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newDb "music-server/db"
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"os"
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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/database/postgres"
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_ "github.com/golang-migrate/migrate/v4/source/file"
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"github.com/golang-migrate/migrate/v4/source/iofs"
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"github.com/jackc/pgx/v5/pgxpool"
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_ "github.com/lib/pq"
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)
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var Dbpool *pgxpool.Pool
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var Ctx = context.Background()
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func InitDB(host string, port int, user string, password string, dbname string) {
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psqlInfo := fmt.Sprintf("host=%s port=%d user=%s "+
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"password=%s dbname=%s sslmode=disable",
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host, port, user, password, dbname)
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fmt.Println(psqlInfo)
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var err error
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Dbpool, err = pgxpool.New(Ctx, psqlInfo)
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if err != nil {
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_, _ = fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
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os.Exit(1)
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}
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var success string
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err = Dbpool.QueryRow(Ctx, "select 'Successfully connected!'").Scan(&success)
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if err != nil {
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_, _ = fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", err)
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os.Exit(1)
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}
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Testf()
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fmt.Println(success)
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}
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func CloseDb() {
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Dbpool.Close()
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}
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func Testf() {
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rows, dbErr := Dbpool.Query(Ctx, "select game_name from game")
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if dbErr != nil {
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_, _ = fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", dbErr)
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os.Exit(1)
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}
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for rows.Next() {
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var gameName string
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dbErr = rows.Scan(&gameName)
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if dbErr != nil {
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_, _ = fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", dbErr)
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}
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_, _ = fmt.Fprintf(os.Stderr, "%v\n", gameName)
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}
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}
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func resetGameIdSeq() {
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_, err := Dbpool.Query(Ctx, "SELECT setval('game_id_seq', (SELECT MAX(id) FROM game)+1);")
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if err != nil {
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_, _ = fmt.Fprintf(os.Stderr, "Exec failed: %v\n", err)
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}
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}
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func Migrate_db(host string, port int, user string, password string, dbname string) {
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migrationInfo := fmt.Sprintf("postgres://%s:%s@%s:%d/%s?sslmode=disable",
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user, password, host, port, dbname)
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fmt.Println("Migration Info: ", migrationInfo)
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db, err := sql.Open("postgres", migrationInfo)
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if err != nil {
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log.Println(err)
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}
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driver, err := postgres.WithInstance(db, &postgres.Config{})
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if err != nil {
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log.Println(err)
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}
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files, err := iofs.New(newDb.MigrationsFs, "migrations")
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if err != nil {
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log.Fatal(err)
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}
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m, err := migrate.NewWithInstance("iofs", files, "postgres", driver)
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if err != nil {
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log.Fatal(err)
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}
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/*m, err := migrate.NewWithDatabaseInstance(
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"file://./db/migrations/",
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"postgres", driver)
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if err != nil {
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log.Println(err)
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}*/
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version, _, err := m.Version()
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if err != nil {
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log.Println("Migration version err: ", err)
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}
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fmt.Println("Migration version before: ", version)
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err = m.Force(1)
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//err = m.Up() // or m.Steps(2) if you want to explicitly set the number of migrations to run
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if err != nil {
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log.Println("Force err: ", err)
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}
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err = m.Migrate(2)
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//err = m.Up() // or m.Steps(2) if you want to explicitly set the number of migrations to run
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if err != nil {
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log.Println("Migration err: ", err)
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}
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versionAfter, _, err := m.Version()
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if err != nil {
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log.Println("Migration version err: ", err)
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}
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fmt.Println("Migration version after: ", versionAfter)
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fmt.Println("Migration done")
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db.Close()
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}
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