mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-07-19 22:42:20 +00:00
Chris Lu
803c5a8dca
Concurrent bucket deletion across multiple filer replicas races on the per-bucket DROP TABLE. The first replica drops the table; the rest hit an undefined-table error (postgres 42P01, mysql 1051) which propagates out of DeleteFolderChildren and panics the filer. On restart the same pending DROP re-runs and the filer crash-loops. Make the drop idempotent. Same defect class in all SQL backends, so fix postgres, postgres2, mysql, mysql2, and sqlite together.
124 lines
3.7 KiB
Go
124 lines
3.7 KiB
Go
// Package postgres provides PostgreSQL filer store implementation
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// Migrated from github.com/lib/pq to github.com/jackc/pgx for:
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// - Active development and support
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// - Better performance and PostgreSQL-specific features
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// - Improved error handling (no more panics)
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// - Built-in logging capabilities
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// - Superior SSL certificate support
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package postgres
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import (
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"strconv"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/filer/abstract_sql"
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"github.com/seaweedfs/seaweedfs/weed/util"
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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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// Absent key keeps a pooled default; an explicit 0 disables the idle pool.
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configuration.SetDefault(prefix+"connection_max_idle", 2)
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// Default on so minimal configs are not exposed to duplicate-key tx
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// poisoning on Postgres; an explicit false still disables it.
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configuration.SetDefault(prefix+"enableUpsert", true)
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return store.initialize(
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configuration.GetString(prefix+"upsertQuery"),
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configuration.GetBool(prefix+"enableUpsert"),
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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.GetString(prefix+"sslcert"),
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configuration.GetString(prefix+"sslkey"),
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configuration.GetString(prefix+"sslrootcert"),
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configuration.GetString(prefix+"sslcrl"),
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configuration.GetBool(prefix+"pgbouncer_compatible"),
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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(upsertQuery string, enableUpsert bool, user, password, hostname string, port int, database, schema, sslmode, sslcert, sslkey, sslrootcert, sslcrl string, pgbouncerCompatible bool, maxIdle, maxOpen, maxLifetimeSeconds int) (err error) {
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store.SupportBucketTable = false
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if !enableUpsert {
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upsertQuery = ""
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} else if upsertQuery == "" {
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upsertQuery = DefaultUpsertQuery
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}
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gen := &SqlGenPostgres{
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CreateTableSqlTemplate: "",
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DropTableSqlTemplate: `drop table if exists "%s"`,
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UpsertQueryTemplate: upsertQuery,
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}
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store.SqlGenerator = gen
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// pgx-optimized connection string with better timeouts and connection handling
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sqlUrl := "connect_timeout=30"
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if hostname != "" {
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sqlUrl += " host=" + hostname
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}
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if port != 0 {
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sqlUrl += " port=" + strconv.Itoa(port)
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}
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// SSL configuration - pgx provides better SSL support than lib/pq
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if sslmode != "" {
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sqlUrl += " sslmode=" + sslmode
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}
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if sslcert != "" {
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sqlUrl += " sslcert=" + sslcert
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}
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if sslkey != "" {
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sqlUrl += " sslkey=" + sslkey
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}
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if sslrootcert != "" {
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sqlUrl += " sslrootcert=" + sslrootcert
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}
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if sslcrl != "" {
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sqlUrl += " sslcrl=" + sslcrl
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}
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if user != "" {
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sqlUrl += " user=" + user
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}
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adaptedSqlUrl := sqlUrl
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if password != "" {
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sqlUrl += " password=" + password
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adaptedSqlUrl += " password=ADAPTED"
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}
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if database != "" {
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sqlUrl += " dbname=" + database
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adaptedSqlUrl += " dbname=" + database
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}
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if schema != "" && !pgbouncerCompatible {
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sqlUrl += " search_path=" + schema
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adaptedSqlUrl += " search_path=" + schema
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}
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db, openErr := OpenPGXDB(sqlUrl, adaptedSqlUrl, pgbouncerCompatible, maxIdle, maxOpen, maxLifetimeSeconds)
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if openErr != nil {
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return openErr
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}
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store.DB = db
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ConfigureListOrdering(store.DB, gen)
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return nil
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}
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