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9d53351dc2
* Offset updates take place using TransactionWriter * Refactor TransactionWriter in current state server * Refactor TransactionWriter in federation sender * Refactor TransactionWriter in key server * Refactor TransactionWriter in media API * Refactor TransactionWriter in server key API * Refactor TransactionWriter in sync API * Refactor TransactionWriter in user API * Fix deadlocking Sync API tests * Un-deadlock device database * Fix appservice API * Rename TransactionWriters to Writers * Move writers up a layer in sync API * Document sqlutil.Writer interface * Add note to Writer documentation
125 lines
4.1 KiB
Go
125 lines
4.1 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 sqlite3
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import (
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"context"
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"database/sql"
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"time"
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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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const mediaSchema = `
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-- The media_repository table holds metadata for each media file stored and accessible to the local server,
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-- the actual file is stored separately.
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CREATE TABLE IF NOT EXISTS mediaapi_media_repository (
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-- The id used to refer to the media.
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-- For uploads to this server this is a base64-encoded sha256 hash of the file data
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-- For media from remote servers, this can be any unique identifier string
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media_id TEXT NOT NULL,
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-- The origin of the media as requested by the client. Should be a homeserver domain.
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media_origin TEXT NOT NULL,
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-- The MIME-type of the media file as specified when uploading.
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content_type TEXT NOT NULL,
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-- Size of the media file in bytes.
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file_size_bytes INTEGER NOT NULL,
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-- When the content was uploaded in UNIX epoch ms.
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creation_ts INTEGER NOT NULL,
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-- The file name with which the media was uploaded.
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upload_name TEXT NOT NULL,
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-- Alternate RFC 4648 unpadded base64 encoding string representation of a SHA-256 hash sum of the file data.
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base64hash TEXT NOT NULL,
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-- The user who uploaded the file. Should be a Matrix user ID.
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user_id TEXT NOT NULL
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);
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CREATE UNIQUE INDEX IF NOT EXISTS mediaapi_media_repository_index ON mediaapi_media_repository (media_id, media_origin);
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`
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const insertMediaSQL = `
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INSERT INTO mediaapi_media_repository (media_id, media_origin, content_type, file_size_bytes, creation_ts, upload_name, base64hash, user_id)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
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`
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const selectMediaSQL = `
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SELECT content_type, file_size_bytes, creation_ts, upload_name, base64hash, user_id FROM mediaapi_media_repository WHERE media_id = $1 AND media_origin = $2
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`
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type mediaStatements struct {
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db *sql.DB
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writer sqlutil.Writer
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insertMediaStmt *sql.Stmt
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selectMediaStmt *sql.Stmt
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}
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func (s *mediaStatements) prepare(db *sql.DB, writer sqlutil.Writer) (err error) {
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s.db = db
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s.writer = writer
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_, err = db.Exec(mediaSchema)
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if err != nil {
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return
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}
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return statementList{
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{&s.insertMediaStmt, insertMediaSQL},
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{&s.selectMediaStmt, selectMediaSQL},
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}.prepare(db)
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}
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func (s *mediaStatements) insertMedia(
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ctx context.Context, mediaMetadata *types.MediaMetadata,
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) error {
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mediaMetadata.CreationTimestamp = types.UnixMs(time.Now().UnixNano() / 1000000)
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return s.writer.Do(s.db, nil, func(txn *sql.Tx) error {
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stmt := sqlutil.TxStmt(txn, s.insertMediaStmt)
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_, err := stmt.ExecContext(
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ctx,
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mediaMetadata.MediaID,
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mediaMetadata.Origin,
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mediaMetadata.ContentType,
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mediaMetadata.FileSizeBytes,
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mediaMetadata.CreationTimestamp,
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mediaMetadata.UploadName,
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mediaMetadata.Base64Hash,
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mediaMetadata.UserID,
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)
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return err
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})
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}
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func (s *mediaStatements) selectMedia(
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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 := types.MediaMetadata{
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MediaID: mediaID,
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Origin: mediaOrigin,
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}
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err := s.selectMediaStmt.QueryRowContext(
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ctx, mediaMetadata.MediaID, mediaMetadata.Origin,
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).Scan(
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&mediaMetadata.ContentType,
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&mediaMetadata.FileSizeBytes,
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&mediaMetadata.CreationTimestamp,
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&mediaMetadata.UploadName,
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&mediaMetadata.Base64Hash,
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&mediaMetadata.UserID,
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)
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return &mediaMetadata, err
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}
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