seaweedfs/weed/filer/postgres2/postgres2_store.go

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package postgres2
import (
"context"
"database/sql"
"fmt"
"strconv"
"time"
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_ "github.com/lib/pq"
"github.com/seaweedfs/seaweedfs/weed/filer"
"github.com/seaweedfs/seaweedfs/weed/filer/abstract_sql"
"github.com/seaweedfs/seaweedfs/weed/filer/postgres"
"github.com/seaweedfs/seaweedfs/weed/util"
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)
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var _ filer.BucketAware = (*PostgresStore2)(nil)
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func init() {
filer.Stores = append(filer.Stores, &PostgresStore2{})
}
type PostgresStore2 struct {
abstract_sql.AbstractSqlStore
}
func (store *PostgresStore2) GetName() string {
return "postgres2"
}
func (store *PostgresStore2) Initialize(configuration util.Configuration, prefix string) (err error) {
return store.initialize(
configuration.GetString(prefix+"createTable"),
configuration.GetString(prefix+"upsertQuery"),
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configuration.GetBool(prefix+"enableUpsert"),
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configuration.GetString(prefix+"username"),
configuration.GetString(prefix+"password"),
configuration.GetString(prefix+"hostname"),
configuration.GetInt(prefix+"port"),
configuration.GetString(prefix+"database"),
configuration.GetString(prefix+"schema"),
configuration.GetString(prefix+"sslmode"),
configuration.GetInt(prefix+"connection_max_idle"),
configuration.GetInt(prefix+"connection_max_open"),
configuration.GetInt(prefix+"connection_max_lifetime_seconds"),
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)
}
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func (store *PostgresStore2) initialize(createTable, upsertQuery string, enableUpsert bool, user, password, hostname string, port int, database, schema, sslmode string, maxIdle, maxOpen, maxLifetimeSeconds int) (err error) {
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store.SupportBucketTable = true
if !enableUpsert {
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upsertQuery = ""
}
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store.SqlGenerator = &postgres.SqlGenPostgres{
CreateTableSqlTemplate: createTable,
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DropTableSqlTemplate: `drop table "%s"`,
UpsertQueryTemplate: upsertQuery,
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}
sqlUrl := "connect_timeout=30"
if hostname != "" {
sqlUrl += " host=" + hostname
}
if port != 0 {
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sqlUrl += " port=" + strconv.Itoa(port)
}
if sslmode != "" {
sqlUrl += " sslmode=" + sslmode
}
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if user != "" {
sqlUrl += " user=" + user
}
adaptedSqlUrl := sqlUrl
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if password != "" {
sqlUrl += " password=" + password
adaptedSqlUrl += " password=ADAPTED"
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}
if database != "" {
sqlUrl += " dbname=" + database
adaptedSqlUrl += " dbname=" + database
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}
if schema != "" {
sqlUrl += " search_path=" + schema
adaptedSqlUrl += " search_path=" + schema
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}
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", adaptedSqlUrl, err)
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}
store.DB.SetMaxIdleConns(maxIdle)
store.DB.SetMaxOpenConns(maxOpen)
store.DB.SetConnMaxLifetime(time.Duration(maxLifetimeSeconds) * time.Second)
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if err = store.DB.Ping(); err != nil {
return fmt.Errorf("connect to %s error:%v", sqlUrl, err)
}
if err = store.CreateTable(context.Background(), abstract_sql.DEFAULT_TABLE); err != nil {
return fmt.Errorf("init table %s: %v", abstract_sql.DEFAULT_TABLE, err)
}
return nil
}