mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-25 11:39:12 +08:00
69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
package postgres
|
|
|
|
import (
|
|
"database/sql"
|
|
"fmt"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/filer2"
|
|
"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
_ "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 util.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
|
|
}
|