mirror of
https://github.com/1f349/dendrite.git
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234ed603e6
Doesn't buy us much, but makes everything a bit more consistent. Also removes the SQL trace driver, as it is unused and the output is hard to read anyway.
114 lines
3.1 KiB
Go
114 lines
3.1 KiB
Go
// Copyright 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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"github.com/lib/pq"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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)
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const queueJSONSchema = `
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-- The federationsender_queue_json table contains event contents that
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-- we failed to send.
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CREATE TABLE IF NOT EXISTS federationsender_queue_json (
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-- The JSON NID. This allows the federationsender_queue_retry table to
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-- cross-reference to find the JSON blob.
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json_nid BIGSERIAL,
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-- The JSON body. Text so that we preserve UTF-8.
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json_body TEXT NOT NULL
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);
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CREATE UNIQUE INDEX IF NOT EXISTS federationsender_queue_json_json_nid_idx
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ON federationsender_queue_json (json_nid);
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`
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const insertJSONSQL = "" +
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"INSERT INTO federationsender_queue_json (json_body)" +
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" VALUES ($1)" +
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" RETURNING json_nid"
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const deleteJSONSQL = "" +
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"DELETE FROM federationsender_queue_json WHERE json_nid = ANY($1)"
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const selectJSONSQL = "" +
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"SELECT json_nid, json_body FROM federationsender_queue_json" +
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" WHERE json_nid = ANY($1)"
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type queueJSONStatements struct {
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db *sql.DB
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insertJSONStmt *sql.Stmt
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deleteJSONStmt *sql.Stmt
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selectJSONStmt *sql.Stmt
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}
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func NewPostgresQueueJSONTable(db *sql.DB) (s *queueJSONStatements, err error) {
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s = &queueJSONStatements{
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db: db,
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}
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_, err = s.db.Exec(queueJSONSchema)
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if err != nil {
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return
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}
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return s, sqlutil.StatementList{
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{&s.insertJSONStmt, insertJSONSQL},
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{&s.deleteJSONStmt, deleteJSONSQL},
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{&s.selectJSONStmt, selectJSONSQL},
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}.Prepare(db)
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}
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func (s *queueJSONStatements) InsertQueueJSON(
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ctx context.Context, txn *sql.Tx, json string,
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) (int64, error) {
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stmt := sqlutil.TxStmt(txn, s.insertJSONStmt)
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var lastid int64
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if err := stmt.QueryRowContext(ctx, json).Scan(&lastid); err != nil {
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return 0, err
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}
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return lastid, nil
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}
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func (s *queueJSONStatements) DeleteQueueJSON(
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ctx context.Context, txn *sql.Tx, nids []int64,
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) error {
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stmt := sqlutil.TxStmt(txn, s.deleteJSONStmt)
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_, err := stmt.ExecContext(ctx, pq.Int64Array(nids))
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return err
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}
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func (s *queueJSONStatements) SelectQueueJSON(
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ctx context.Context, txn *sql.Tx, jsonNIDs []int64,
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) (map[int64][]byte, error) {
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blobs := map[int64][]byte{}
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stmt := sqlutil.TxStmt(txn, s.selectJSONStmt)
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rows, err := stmt.QueryContext(ctx, pq.Int64Array(jsonNIDs))
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if err != nil {
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return nil, err
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}
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defer internal.CloseAndLogIfError(ctx, rows, "selectJSON: rows.close() failed")
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for rows.Next() {
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var nid int64
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var blob []byte
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if err = rows.Scan(&nid, &blob); err != nil {
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return nil, err
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}
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blobs[nid] = blob
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}
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return blobs, err
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}
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