autobrr/internal/database/postgres.go
ze0s fe4f385a22
feat(database): connect postgres via socket and read config from env _FILE secrets (#2061)
* feat(database): connect postgres via socket

* feat(config): read env var secrets from file

* docs: explain env var secrets

* refactor: generate postgres dsn
2025-05-05 21:15:24 +02:00

145 lines
3.9 KiB
Go

// Copyright (c) 2021 - 2025, Ludvig Lundgren and the autobrr contributors.
// SPDX-License-Identifier: GPL-2.0-or-later
package database
import (
"database/sql"
"fmt"
"net"
"net/url"
"github.com/autobrr/autobrr/pkg/errors"
_ "github.com/lib/pq"
)
func (db *DB) openPostgres() error {
var err error
// open database connection
if db.handler, err = sql.Open("postgres", db.DSN); err != nil {
db.log.Fatal().Err(err).Msg("could not open postgres connection")
return errors.Wrap(err, "could not open postgres connection")
}
err = db.handler.Ping()
if err != nil {
db.log.Fatal().Err(err).Msg("could not ping postgres database")
return errors.Wrap(err, "could not ping postgres database")
}
// migrate db
if err = db.migratePostgres(); err != nil {
db.log.Fatal().Err(err).Msg("could not migrate postgres database")
return errors.Wrap(err, "could not migrate postgres database")
}
return nil
}
func (db *DB) migratePostgres() error {
tx, err := db.handler.Begin()
if err != nil {
return errors.Wrap(err, "error starting transaction")
}
defer tx.Rollback()
initialSchema := `CREATE TABLE IF NOT EXISTS schema_migrations (
id INTEGER PRIMARY KEY,
version INTEGER NOT NULL
);`
if _, err := tx.Exec(initialSchema); err != nil {
return errors.New("failed to create schema_migrations table")
}
var version int
err = tx.QueryRow(`SELECT version FROM schema_migrations`).Scan(&version)
if err != nil && !errors.Is(err, sql.ErrNoRows) {
return errors.Wrap(err, "failed to query schema version")
}
if version == len(postgresMigrations) {
return nil
} else if version > len(postgresMigrations) {
return errors.New("autobrr (version %d) older than schema (version: %d)", len(postgresMigrations), version)
}
db.log.Info().Msgf("Beginning database schema upgrade from version %v to version: %v", version, len(postgresMigrations))
if version == 0 {
if _, err := tx.Exec(postgresSchema); err != nil {
return errors.Wrap(err, "failed to initialize schema")
}
} else {
for i := version; i < len(postgresMigrations); i++ {
db.log.Info().Msgf("Upgrading Database schema to version: %v", i+1)
if _, err := tx.Exec(postgresMigrations[i]); err != nil {
return errors.Wrap(err, "failed to execute migration #%v", i)
}
}
}
_, err = tx.Exec(`INSERT INTO schema_migrations (id, version) VALUES (1, $1) ON CONFLICT (id) DO UPDATE SET version = $1`, len(postgresMigrations))
if err != nil {
return errors.Wrap(err, "failed to bump schema version")
}
db.log.Info().Msgf("Database schema upgraded to version: %v", len(postgresMigrations))
return tx.Commit()
}
// PostgresDSN build postgres dsn connect string
func PostgresDSN(host string, port int, user, pass, database, socket, sslMode, extraParams string) (string, error) {
// If no database is provided, return an error
if database == "" {
return "", errors.New("postgres: database name is required")
}
pgDsn, err := url.Parse("postgres://")
if err != nil {
return "", errors.Wrap(err, "could not parse postgres DSN")
}
pgDsn.Path = database
if user != "" {
pgDsn.User = url.UserPassword(user, pass)
}
queryParams := pgDsn.Query()
// Build DSN based on the connection type (TCP vs. Unix socket)
if socket != "" {
// Unix socket connection via the host param
queryParams.Add("host", socket)
} else {
// TCP connection
if host == "" && port == 0 {
return "", errors.New("postgres: host and port are required for TCP connection")
}
if port > 0 {
pgDsn.Host = net.JoinHostPort(host, fmt.Sprintf("%d", port))
} else {
pgDsn.Host = database
}
}
// Add SSL mode if provided
if sslMode != "" {
queryParams.Add("sslmode", sslMode)
}
pgDsn.RawQuery = queryParams.Encode()
// Add any extra parameters
if extraParams != "" {
values, err := url.ParseQuery(extraParams)
if err != nil {
return "", errors.Wrap(err, "could not parse extra params")
}
pgDsn.RawQuery = fmt.Sprintf("%s&%s", pgDsn.RawQuery, values.Encode())
}
return pgDsn.String(), nil
}