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Fix media DB possibly leaking connections (#3372)

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Grafana Pyroscope unveiled that we are hitting
ad10fbd3c4/src/database/sql/sql.go (L2739-L2742)
for media DB queries.

Making the methods pointer receivers fixes this.

(Also some minor `error` cosmetic updates)
This commit is contained in:
Till 2024-07-27 22:29:19 +02:00 committed by GitHub
parent a2e56dccb0
commit 795c4a9453
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GPG Key ID: B5690EEEBB952194
1 changed files with 13 additions and 18 deletions
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27
mediaapi/storage/shared/mediaapi.go
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@ -17,6 +17,7 @@ package shared
import (
"context"
"database/sql"
"errors"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/mediaapi/storage/tables"
@ -33,7 +34,7 @@ type Database struct {
// StoreMediaMetadata inserts the metadata about the uploaded media into the database.
// Returns an error if the combination of MediaID and Origin are not unique in the table.
func (d Database) StoreMediaMetadata(ctx context.Context, mediaMetadata *types.MediaMetadata) error {
func (d *Database) StoreMediaMetadata(ctx context.Context, mediaMetadata *types.MediaMetadata) error {
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
return d.MediaRepository.InsertMedia(ctx, txn, mediaMetadata)
})
@ -42,9 +43,9 @@ func (d Database) StoreMediaMetadata(ctx context.Context, mediaMetadata *types.M
// GetMediaMetadata returns metadata about media stored on this server.
// The media could have been uploaded to this server or fetched from another server and cached here.
// Returns nil metadata if there is no metadata associated with this media.
func (d Database) GetMediaMetadata(ctx context.Context, mediaID types.MediaID, mediaOrigin spec.ServerName) (*types.MediaMetadata, error) {
func (d *Database) GetMediaMetadata(ctx context.Context, mediaID types.MediaID, mediaOrigin spec.ServerName) (*types.MediaMetadata, error) {
mediaMetadata, err := d.MediaRepository.SelectMedia(ctx, nil, mediaID, mediaOrigin)
if err != nil && err == sql.ErrNoRows {
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
return mediaMetadata, err
@ -53,9 +54,9 @@ func (d Database) GetMediaMetadata(ctx context.Context, mediaID types.MediaID, m
// GetMediaMetadataByHash returns metadata about media stored on this server.
// The media could have been uploaded to this server or fetched from another server and cached here.
// Returns nil metadata if there is no metadata associated with this media.
func (d Database) GetMediaMetadataByHash(ctx context.Context, mediaHash types.Base64Hash, mediaOrigin spec.ServerName) (*types.MediaMetadata, error) {
func (d *Database) GetMediaMetadataByHash(ctx context.Context, mediaHash types.Base64Hash, mediaOrigin spec.ServerName) (*types.MediaMetadata, error) {
mediaMetadata, err := d.MediaRepository.SelectMediaByHash(ctx, nil, mediaHash, mediaOrigin)
if err != nil && err == sql.ErrNoRows {
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
return mediaMetadata, err
@ -63,7 +64,7 @@ func (d Database) GetMediaMetadataByHash(ctx context.Context, mediaHash types.Ba
// StoreThumbnail inserts the metadata about the thumbnail into the database.
// Returns an error if the combination of MediaID and Origin are not unique in the table.
func (d Database) StoreThumbnail(ctx context.Context, thumbnailMetadata *types.ThumbnailMetadata) error {
func (d *Database) StoreThumbnail(ctx context.Context, thumbnailMetadata *types.ThumbnailMetadata) error {
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
return d.Thumbnails.InsertThumbnail(ctx, txn, thumbnailMetadata)
})
@ -72,27 +73,21 @@ func (d Database) StoreThumbnail(ctx context.Context, thumbnailMetadata *types.T
// GetThumbnail returns metadata about a specific thumbnail.
// The media could have been uploaded to this server or fetched from another server and cached here.
// Returns nil metadata if there is no metadata associated with this thumbnail.
func (d Database) GetThumbnail(ctx context.Context, mediaID types.MediaID, mediaOrigin spec.ServerName, width, height int, resizeMethod string) (*types.ThumbnailMetadata, error) {
func (d *Database) GetThumbnail(ctx context.Context, mediaID types.MediaID, mediaOrigin spec.ServerName, width, height int, resizeMethod string) (*types.ThumbnailMetadata, error) {
metadata, err := d.Thumbnails.SelectThumbnail(ctx, nil, mediaID, mediaOrigin, width, height, resizeMethod)
if err != nil {
if err == sql.ErrNoRows {
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
return nil, err
}
return metadata, err
}
// GetThumbnails returns metadata about all thumbnails for a specific media stored on this server.
// The media could have been uploaded to this server or fetched from another server and cached here.
// Returns nil metadata if there are no thumbnails associated with this media.
func (d Database) GetThumbnails(ctx context.Context, mediaID types.MediaID, mediaOrigin spec.ServerName) ([]*types.ThumbnailMetadata, error) {
func (d *Database) GetThumbnails(ctx context.Context, mediaID types.MediaID, mediaOrigin spec.ServerName) ([]*types.ThumbnailMetadata, error) {
metadatas, err := d.Thumbnails.SelectThumbnails(ctx, nil, mediaID, mediaOrigin)
if err != nil {
if err == sql.ErrNoRows {
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
return nil, err
}
return metadatas, err
}