mirror of
https://github.com/matrix-org/dendrite
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287700baee
* Filenames based on hashes but media IDs randomly generated and per-upload metadata * Lint * Comment generateMediaID
121 lines
4.5 KiB
Go
121 lines
4.5 KiB
Go
// Copyright 2017-2018 New Vector Ltd
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// Copyright 2019-2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package postgres
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import (
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"context"
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"database/sql"
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// Import the postgres database driver.
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_ "github.com/lib/pq"
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"github.com/matrix-org/dendrite/internal/config"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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"github.com/matrix-org/dendrite/mediaapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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)
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// Database is used to store metadata about a repository of media files.
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type Database struct {
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statements statements
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db *sql.DB
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}
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// Open opens a postgres database.
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func Open(dbProperties *config.DatabaseOptions) (*Database, error) {
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var d Database
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var err error
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if d.db, err = sqlutil.Open(dbProperties); err != nil {
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return nil, err
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}
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if err = d.statements.prepare(d.db); err != nil {
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return nil, err
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}
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return &d, nil
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}
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// StoreMediaMetadata inserts the metadata about the uploaded media into the database.
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// Returns an error if the combination of MediaID and Origin are not unique in the table.
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func (d *Database) StoreMediaMetadata(
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ctx context.Context, mediaMetadata *types.MediaMetadata,
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) error {
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return d.statements.media.insertMedia(ctx, mediaMetadata)
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}
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// GetMediaMetadata returns metadata about media stored on this server.
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// The media could have been uploaded to this server or fetched from another server and cached here.
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// Returns nil metadata if there is no metadata associated with this media.
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func (d *Database) GetMediaMetadata(
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ctx context.Context, mediaID types.MediaID, mediaOrigin gomatrixserverlib.ServerName,
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) (*types.MediaMetadata, error) {
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mediaMetadata, err := d.statements.media.selectMedia(ctx, mediaID, mediaOrigin)
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if err != nil && err == sql.ErrNoRows {
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return nil, nil
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}
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return mediaMetadata, err
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}
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// GetMediaMetadataByHash returns metadata about media stored on this server.
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// The media could have been uploaded to this server or fetched from another server and cached here.
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// Returns nil metadata if there is no metadata associated with this media.
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func (d *Database) GetMediaMetadataByHash(
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ctx context.Context, mediaHash types.Base64Hash, mediaOrigin gomatrixserverlib.ServerName,
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) (*types.MediaMetadata, error) {
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mediaMetadata, err := d.statements.media.selectMediaByHash(ctx, mediaHash, mediaOrigin)
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if err != nil && err == sql.ErrNoRows {
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return nil, nil
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}
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return mediaMetadata, err
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}
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// StoreThumbnail inserts the metadata about the thumbnail into the database.
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// Returns an error if the combination of MediaID and Origin are not unique in the table.
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func (d *Database) StoreThumbnail(
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ctx context.Context, thumbnailMetadata *types.ThumbnailMetadata,
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) error {
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return d.statements.thumbnail.insertThumbnail(ctx, thumbnailMetadata)
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}
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// GetThumbnail returns metadata about a specific thumbnail.
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// The media could have been uploaded to this server or fetched from another server and cached here.
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// Returns nil metadata if there is no metadata associated with this thumbnail.
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func (d *Database) GetThumbnail(
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ctx context.Context,
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mediaID types.MediaID,
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mediaOrigin gomatrixserverlib.ServerName,
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width, height int,
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resizeMethod string,
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) (*types.ThumbnailMetadata, error) {
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thumbnailMetadata, err := d.statements.thumbnail.selectThumbnail(
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ctx, mediaID, mediaOrigin, width, height, resizeMethod,
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)
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if err != nil && err == sql.ErrNoRows {
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return nil, nil
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}
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return thumbnailMetadata, err
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}
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// GetThumbnails returns metadata about all thumbnails for a specific media stored on this server.
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// The media could have been uploaded to this server or fetched from another server and cached here.
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// Returns nil metadata if there are no thumbnails associated with this media.
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func (d *Database) GetThumbnails(
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ctx context.Context, mediaID types.MediaID, mediaOrigin gomatrixserverlib.ServerName,
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) ([]*types.ThumbnailMetadata, error) {
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thumbnails, err := d.statements.thumbnail.selectThumbnails(ctx, mediaID, mediaOrigin)
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if err != nil && err == sql.ErrNoRows {
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return nil, nil
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}
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return thumbnails, err
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}
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