006653ed8e
This change removes the timestamp field from messages and conversations in favor of multiple semantically named timestamp fields: sent_at, received_at on messages; active_at on conversations. This requires/lets us rethink and improve our indexing scheme thusly: The inbox index on conversations will order entries by the conversation.active_at property, which should only appear on conversations destined for the inbox. The receipt index will use the message.sent_at property, for effecient lookup of outgoing messages by timestamp, for use in processing delivery receipts. The group index on conversation.members is multi-entry, meaning that looking up any phone number in this index will efficiently yield all groups the number belongs to. The conversation index lets us scan messages in a single conversation, in the order they were received (or the reverse order). It is a compound index on [conversationId, received_at].
39 lines
1.7 KiB
JavaScript
39 lines
1.7 KiB
JavaScript
/* vim: ts=4:sw=4:expandtab
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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(function () {
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'use strict';
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window.Whisper = window.Whisper || {};
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window.Whisper.Database = window.Whisper.Database || {};
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window.Whisper.Database.id = window.Whisper.Database.id || 'signal';
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Whisper.Database.migrations = [
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{
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version: "1.0",
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migrate: function(transaction, next) {
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console.log('migration 1.0');
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var messages = transaction.db.createObjectStore("messages");
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messages.createIndex("conversation", ["conversationId", "received_at"], { unique: false });
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messages.createIndex("receipt", "sent_at", { unique: false });
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var conversations = transaction.db.createObjectStore("conversations");
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conversations.createIndex("inbox", "active_at", { unique: false });
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conversations.createIndex("group", "members", { unique: false, multiEntry: true });
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next();
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}
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}
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];
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}());
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