package postgres import ( "database/sql" "fmt" "time" "github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/filer/abstract_sql" "github.com/chrislusf/seaweedfs/weed/util" _ "github.com/lib/pq" ) const ( CONNECTION_URL_PATTERN = "host=%s port=%d sslmode=%s connect_timeout=30" ) func init() { filer.Stores = append(filer.Stores, &PostgresStore{}) } type PostgresStore struct { abstract_sql.AbstractSqlStore } func (store *PostgresStore) GetName() string { return "postgres" } func (store *PostgresStore) Initialize(configuration util.Configuration, prefix string) (err error) { return store.initialize( configuration.GetString(prefix+"username"), configuration.GetString(prefix+"password"), configuration.GetString(prefix+"hostname"), configuration.GetInt(prefix+"port"), configuration.GetString(prefix+"database"), configuration.GetString(prefix+"schema"), configuration.GetString(prefix+"sslmode"), configuration.GetInt(prefix+"connection_max_idle"), configuration.GetInt(prefix+"connection_max_open"), configuration.GetInt(prefix+"connection_max_lifetime_seconds"), ) } func (store *PostgresStore) initialize(user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen, maxLifetimeSeconds int) (err error) { store.SupportBucketTable = false store.SqlGenerator = &SqlGenPostgres{ CreateTableSqlTemplate: "", DropTableSqlTemplate: `drop table "%s"`, } sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, sslmode) if user != "" { sqlUrl += " user=" + user } adaptedSqlUrl := sqlUrl if password != "" { sqlUrl += " password=" + password adaptedSqlUrl += " password=ADAPTED" } if database != "" { sqlUrl += " dbname=" + database adaptedSqlUrl += " dbname=" + database } if schema != "" { sqlUrl += " search_path=" + schema adaptedSqlUrl += " search_path=" + schema } var dbErr error store.DB, dbErr = sql.Open("postgres", sqlUrl) if dbErr != nil { store.DB.Close() store.DB = nil return fmt.Errorf("can not connect to %s error:%v", adaptedSqlUrl, err) } store.DB.SetMaxIdleConns(maxIdle) store.DB.SetMaxOpenConns(maxOpen) store.DB.SetConnMaxLifetime(time.Duration(maxLifetimeSeconds) * time.Second) if err = store.DB.Ping(); err != nil { return fmt.Errorf("connect to %s error:%v", sqlUrl, err) } return nil }