package postgres import ( "database/sql" "fmt" "github.com/chrislusf/seaweedfs/weed/filer2" "github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql" _ "github.com/lib/pq" ) const ( CONNECTION_URL_PATTERN = "host=%s port=%d user=%s password=%s dbname=%s sslmode=%s connect_timeout=30" ) func init() { filer2.Stores = append(filer2.Stores, &PostgresStore{}) } type PostgresStore struct { abstract_sql.AbstractSqlStore } func (store *PostgresStore) GetName() string { return "postgres" } func (store *PostgresStore) Initialize(configuration filer2.Configuration) (err error) { return store.initialize( configuration.GetString("username"), configuration.GetString("password"), configuration.GetString("hostname"), configuration.GetInt("port"), configuration.GetString("database"), configuration.GetString("sslmode"), configuration.GetInt("connection_max_idle"), configuration.GetInt("connection_max_open"), ) } func (store *PostgresStore) initialize(user, password, hostname string, port int, database, sslmode string, maxIdle, maxOpen int) (err error) { store.SqlInsert = "INSERT INTO filemeta (dirhash,name,directory,meta) VALUES($1,$2,$3,$4)" store.SqlUpdate = "UPDATE filemeta SET meta=$1 WHERE dirhash=$2 AND name=$3 AND directory=$4" store.SqlFind = "SELECT meta FROM filemeta WHERE dirhash=$1 AND name=$2 AND directory=$3" store.SqlDelete = "DELETE FROM filemeta WHERE dirhash=$1 AND name=$2 AND directory=$3" store.SqlListExclusive = "SELECT NAME, meta FROM filemeta WHERE dirhash=$1 AND name>$2 AND directory=$3 ORDER BY NAME ASC LIMIT $4" store.SqlListInclusive = "SELECT NAME, meta FROM filemeta WHERE dirhash=$1 AND name>=$2 AND directory=$3 ORDER BY NAME ASC LIMIT $4" sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, user, password, database, sslmode) 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", sqlUrl, err) } store.DB.SetMaxIdleConns(maxIdle) store.DB.SetMaxOpenConns(maxOpen) if err = store.DB.Ping(); err != nil { return fmt.Errorf("connect to %s error:%v", sqlUrl, err) } return nil }