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7f458d5e78
adding SetConnMaxLifetime configuration (https://golang.org/pkg/database/sql/#DB.SetConnMaxLifetime) to enable refresh of stale connections.
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
package postgres
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import (
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"database/sql"
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"fmt"
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"time"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/filer/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 sslmode=%s connect_timeout=30"
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)
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func init() {
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filer.Stores = append(filer.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+"schema"),
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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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configuration.GetInt(prefix+"connection_max_lifetime_seconds"),
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)
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}
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func (store *PostgresStore) initialize(user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen, maxLifetimeSeconds int) (err error) {
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store.SupportBucketTable = false
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store.SqlGenerator = &SqlGenPostgres{
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CreateTableSqlTemplate: "",
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DropTableSqlTemplate: `drop table "%s"`,
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}
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sqlUrl := fmt.Sprintf(CONNECTION_URL_PATTERN, hostname, port, sslmode)
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if user != "" {
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sqlUrl += " user=" + user
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}
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if password != "" {
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sqlUrl += " password=" + password
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}
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if database != "" {
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sqlUrl += " dbname=" + database
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}
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if schema != "" {
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sqlUrl += " search_path=" + schema
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}
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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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store.DB.SetConnMaxLifetime(time.Duration(maxLifetimeSeconds) * time.Second)
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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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