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70 lines
2.3 KiB
Go
70 lines
2.3 KiB
Go
package postgres
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import (
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"database/sql"
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
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"github.com/chrislusf/seaweedfs/weed/util"
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_ "github.com/lib/pq"
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)
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const (
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CONNECTION_URL_PATTERN = "host=%s port=%d user=%s password=%s dbname=%s sslmode=%s connect_timeout=30"
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)
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func init() {
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filer2.Stores = append(filer2.Stores, &PostgresStore{})
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}
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type PostgresStore struct {
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abstract_sql.AbstractSqlStore
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}
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func (store *PostgresStore) GetName() string {
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return "postgres"
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}
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func (store *PostgresStore) Initialize(configuration util.Configuration, prefix string) (err error) {
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return store.initialize(
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configuration.GetString(prefix+"username"),
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configuration.GetString(prefix+"password"),
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configuration.GetString(prefix+"hostname"),
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configuration.GetInt(prefix+"port"),
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configuration.GetString(prefix+"database"),
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configuration.GetString(prefix+"sslmode"),
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configuration.GetInt(prefix+"connection_max_idle"),
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configuration.GetInt(prefix+"connection_max_open"),
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)
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}
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func (store *PostgresStore) initialize(user, password, hostname string, port int, database, sslmode string, maxIdle, maxOpen int) (err error) {
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store.SqlInsert = "INSERT INTO filemeta (dirhash,name,directory,meta) VALUES($1,$2,$3,$4)"
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store.SqlUpdate = "UPDATE filemeta SET meta=$1 WHERE dirhash=$2 AND name=$3 AND directory=$4"
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store.SqlFind = "SELECT meta FROM filemeta WHERE dirhash=$1 AND name=$2 AND directory=$3"
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store.SqlDelete = "DELETE FROM filemeta WHERE dirhash=$1 AND name=$2 AND directory=$3"
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store.SqlDeleteFolderChildren = "DELETE FROM filemeta WHERE dirhash=$1 AND directory=$2"
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store.SqlListExclusive = "SELECT NAME, meta FROM filemeta WHERE dirhash=$1 AND name>$2 AND directory=$3 ORDER BY NAME ASC LIMIT $4"
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store.SqlListInclusive = "SELECT NAME, meta FROM filemeta WHERE dirhash=$1 AND name>=$2 AND directory=$3 ORDER BY NAME ASC LIMIT $4"
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sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, user, password, database, sslmode)
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var dbErr error
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store.DB, dbErr = sql.Open("postgres", sqlUrl)
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if dbErr != nil {
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store.DB.Close()
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store.DB = nil
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return fmt.Errorf("can not connect to %s error:%v", sqlUrl, err)
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}
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store.DB.SetMaxIdleConns(maxIdle)
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store.DB.SetMaxOpenConns(maxOpen)
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if err = store.DB.Ping(); err != nil {
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return fmt.Errorf("connect to %s error:%v", sqlUrl, err)
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}
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return nil
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}
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