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// Copyright 2017-2018 New Vector Ltd
// Copyright 2019-2020 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sqlite3
import (
"context"
"database/sql"
"fmt"
"strings"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
)
const queueJSONSchema = `
-- The queue_retry_json table contains event contents that
-- we failed to send.
CREATE TABLE IF NOT EXISTS federationsender_queue_json (
-- The JSON NID. This allows the federationsender_queue_retry table to
-- cross-reference to find the JSON blob.
json_nid INTEGER PRIMARY KEY AUTOINCREMENT,
-- The JSON body. Text so that we preserve UTF-8.
json_body TEXT NOT NULL
);
`
const insertJSONSQL = "" +
"INSERT INTO federationsender_queue_json (json_body)" +
" VALUES ($1)"
const deleteJSONSQL = "" +
"DELETE FROM federationsender_queue_json WHERE json_nid IN ($1)"
const selectJSONSQL = "" +
"SELECT json_nid, json_body FROM federationsender_queue_json" +
" WHERE json_nid IN ($1)"
type queueJSONStatements struct {
db *sql.DB
writer *sqlutil.TransactionWriter
insertJSONStmt *sql.Stmt
//deleteJSONStmt *sql.Stmt - prepared at runtime due to variadic
//selectJSONStmt *sql.Stmt - prepared at runtime due to variadic
}
func NewSQLiteQueueJSONTable(db *sql.DB) (s *queueJSONStatements, err error) {
s = &queueJSONStatements{
db: db,
writer: sqlutil.NewTransactionWriter(),
}
_, err = db.Exec(queueJSONSchema)
if err != nil {
return
}
if s.insertJSONStmt, err = db.Prepare(insertJSONSQL); err != nil {
return
}
return
}
func (s *queueJSONStatements) InsertQueueJSON(
ctx context.Context, txn *sql.Tx, json string,
) (lastid int64, err error) {
err = s.writer.Do(s.db, txn, func(txn *sql.Tx) error {
stmt := sqlutil.TxStmt(txn, s.insertJSONStmt)
res, err := stmt.ExecContext(ctx, json)
if err != nil {
return fmt.Errorf("stmt.QueryContext: %w", err)
}
lastid, err = res.LastInsertId()
if err != nil {
return fmt.Errorf("res.LastInsertId: %w", err)
}
return nil
})
return
}
func (s *queueJSONStatements) DeleteQueueJSON(
ctx context.Context, txn *sql.Tx, nids []int64,
) error {
deleteSQL := strings.Replace(deleteJSONSQL, "($1)", sqlutil.QueryVariadic(len(nids)), 1)
deleteStmt, err := txn.Prepare(deleteSQL)
if err != nil {
return fmt.Errorf("s.deleteQueueJSON s.db.Prepare: %w", err)
}
iNIDs := make([]interface{}, len(nids))
for k, v := range nids {
iNIDs[k] = v
}
return s.writer.Do(s.db, txn, func(txn *sql.Tx) error {
stmt := sqlutil.TxStmt(txn, deleteStmt)
_, err = stmt.ExecContext(ctx, iNIDs...)
return err
})
}
func (s *queueJSONStatements) SelectQueueJSON(
ctx context.Context, txn *sql.Tx, jsonNIDs []int64,
) (map[int64][]byte, error) {
selectSQL := strings.Replace(selectJSONSQL, "($1)", sqlutil.QueryVariadic(len(jsonNIDs)), 1)
selectStmt, err := txn.Prepare(selectSQL)
if err != nil {
return nil, fmt.Errorf("s.selectQueueJSON s.db.Prepare: %w", err)
}
iNIDs := make([]interface{}, len(jsonNIDs))
for k, v := range jsonNIDs {
iNIDs[k] = v
}
blobs := map[int64][]byte{}
stmt := sqlutil.TxStmt(txn, selectStmt)
rows, err := stmt.QueryContext(ctx, iNIDs...)
if err != nil {
return nil, fmt.Errorf("s.selectQueueJSON stmt.QueryContext: %w", err)
}
defer internal.CloseAndLogIfError(ctx, rows, "selectJSON: rows.close() failed")
for rows.Next() {
var nid int64
var blob []byte
if err = rows.Scan(&nid, &blob); err != nil {
return nil, fmt.Errorf("s.selectQueueJSON rows.Scan: %w", err)
}
blobs[nid] = blob
}
return blobs, err
}
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