seaweedfs/weed/filer2/postgres/postgres_store.go

70 lines
2.3 KiB
Go
Raw Normal View History

2018-05-27 05:02:49 +00:00
package postgres
import (
"database/sql"
2018-05-27 18:52:26 +00:00
"fmt"
2018-05-27 05:02:49 +00:00
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
"github.com/chrislusf/seaweedfs/weed/util"
2018-08-19 22:18:37 +00:00
_ "github.com/lib/pq"
2018-05-27 05:02:49 +00:00
)
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 util.Configuration) (err error) {
2018-05-27 05:02:49 +00:00
return store.initialize(
2018-06-17 20:01:57 +00:00
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"),
2018-05-27 05:02:49 +00:00
)
}
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.SqlDeleteFolderChildren = "DELETE FROM filemeta WHERE dirhash=$1 AND directory=$2"
2018-05-27 07:00:11 +00:00
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"
2018-05-27 05:02:49 +00:00
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
}