generated from Nodarx/template
308 lines
11 KiB
PHP
308 lines
11 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace KTXM\ProviderImap\Stores;
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use KTXC\Db\DataStore;
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use KTXM\ProviderImap\Providers\EntityResource;
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/**
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* IMAP Message Meta Store
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*
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* One MongoDB document per cached message in `provider_imap_mail_messages`,
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* keyed by (sid, mailbox, uidValidity, uid). Holds only what list, filter and
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* sort need; message content lives in the content store (message.json).
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*
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* Changes are tracked on the documents themselves (as IMAP CONDSTORE does):
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* `addedSeq` and `modSeq` come from the mailbox's change sequence, and an
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* expunged message stays behind as a tombstone with `removedSeq` until it is
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* purged. Every read except changes() skips tombstones.
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*/
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class MessageStore
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{
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protected const COLLECTION_NAME = 'provider_imap_mail_messages';
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/** Filter that excludes tombstones */
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private const LIVE = ['removedSeq' => null];
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/** Fields dropped when a message becomes a tombstone */
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private const TOMBSTONE_UNSET = [
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'created' => '', 'received' => '', 'sent' => '', 'size' => '',
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'subject' => '', 'from' => '', 'to' => '', 'cc' => '',
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'urid' => '', 'inReplyTo' => '', 'references' => '',
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'flags' => '', 'hasAttachments' => '', 'preview' => '', 'blobs' => '',
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];
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public function __construct(
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protected readonly DataStore $dataStore,
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) {}
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/**
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* Create the collection indexes.
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*
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* MongoDB createIndex is idempotent when the name and specification match.
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*
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* @return string[]
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*/
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public function ensureIndexes(): array
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{
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$collection = $this->dataStore->selectCollection(self::COLLECTION_NAME);
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return [
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'uidValidity' => 1, 'uid' => 1],
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['name' => 'messages_key', 'unique' => true]
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),
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'received' => -1],
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['name' => 'messages_by_received']
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),
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'sent' => -1],
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['name' => 'messages_by_sent']
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),
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'flags' => 1],
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['name' => 'messages_by_flags']
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),
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$collection->createIndex(
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['sid' => 1, 'urid' => 1],
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['name' => 'messages_by_urid']
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),
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$collection->createIndex(
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['tid' => 1, 'sid' => 1],
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['name' => 'messages_by_tenant_service']
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),
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'uidValidity' => 1, 'addedSeq' => 1],
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['name' => 'messages_by_added_seq']
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),
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'uidValidity' => 1, 'modSeq' => 1],
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['name' => 'messages_by_mod_seq']
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),
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$collection->createIndex(
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['sid' => 1, 'mailbox' => 1, 'uidValidity' => 1, 'removedSeq' => 1],
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['name' => 'messages_by_removed_seq', 'partialFilterExpression' => ['removedSeq' => ['$exists' => true]]]
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),
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];
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}
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/**
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* Insert or replace the meta document of a message.
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*
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* `$seq` becomes the document's modSeq, and its addedSeq when the document is new.
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* Fields owned by other writers (e.g. blobs) are left untouched.
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*/
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public function upsert(string $tenantId, string $serviceId, int $uidValidity, EntityResource $entity, int $seq): void
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{
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$document = $entity->toCacheMeta();
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$key = [
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'sid' => $serviceId,
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'mailbox' => $document['mailbox'],
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'uidValidity' => $uidValidity,
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'uid' => $document['uid'],
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];
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$this->dataStore->selectCollection(self::COLLECTION_NAME)->updateOne(
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$key,
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[
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'$set' => ['tid' => $tenantId, ...$key, ...$document, 'modSeq' => $seq],
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'$setOnInsert' => ['addedSeq' => $seq],
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],
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['upsert' => true],
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);
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}
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/**
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* Retrieve the meta document of a message.
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*/
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public function fetch(string $serviceId, string $mailbox, int $uidValidity, int $uid): ?array
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{
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return $this->dataStore->selectCollection(self::COLLECTION_NAME)->findOne([
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'sid' => $serviceId,
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'mailbox' => $mailbox,
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'uidValidity' => $uidValidity,
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'uid' => $uid,
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...self::LIVE,
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]);
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}
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/**
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* Retrieve the meta documents of several messages.
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*
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* @return array<int, array> keyed by UID; UIDs that are not cached are absent
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*/
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public function fetchMany(string $serviceId, string $mailbox, int $uidValidity, int ...$uids): array
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{
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if ($uids === []) {
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return [];
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}
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$cursor = $this->dataStore->selectCollection(self::COLLECTION_NAME)->find([
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'sid' => $serviceId,
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'mailbox' => $mailbox,
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'uidValidity' => $uidValidity,
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'uid' => ['$in' => array_values($uids)],
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...self::LIVE,
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]);
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$list = [];
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foreach ($cursor as $document) {
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$list[(int) $document['uid']] = $document;
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}
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return $list;
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}
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/**
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* List the UIDs cached for a mailbox.
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*
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* @return int[]
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*/
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public function uids(string $serviceId, string $mailbox, int $uidValidity): array
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{
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$cursor = $this->dataStore->selectCollection(self::COLLECTION_NAME)->find(
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['sid' => $serviceId, 'mailbox' => $mailbox, 'uidValidity' => $uidValidity, ...self::LIVE],
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['projection' => ['uid' => 1]],
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);
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$uids = [];
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foreach ($cursor as $document) {
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$uids[] = (int) $document['uid'];
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}
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return $uids;
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}
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/**
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* List the flags of every message cached for a mailbox.
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*
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* @return array<int, list<string>> set flags keyed by UID
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*/
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public function flags(string $serviceId, string $mailbox, int $uidValidity): array
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{
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$cursor = $this->dataStore->selectCollection(self::COLLECTION_NAME)->find(
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['sid' => $serviceId, 'mailbox' => $mailbox, 'uidValidity' => $uidValidity, ...self::LIVE],
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['projection' => ['uid' => 1, 'flags' => 1]],
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);
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$flags = [];
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foreach ($cursor as $document) {
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$flags[(int) $document['uid']] = array_values(array_map('strval', (array) ($document['flags'] ?? [])));
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}
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return $flags;
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}
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/**
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* Replace the flags of a message and stamp it with the change sequence.
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*
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* @param string[] $flags set flags, e.g. ['seen', 'flagged']
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*/
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public function updateFlags(string $serviceId, string $mailbox, int $uidValidity, int $uid, array $flags, int $seq): void
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{
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$this->dataStore->selectCollection(self::COLLECTION_NAME)->updateOne(
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['sid' => $serviceId, 'mailbox' => $mailbox, 'uidValidity' => $uidValidity, 'uid' => $uid, ...self::LIVE],
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['$set' => ['flags' => array_values($flags), 'modSeq' => $seq]],
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);
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}
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/**
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* Turn messages into tombstones: their list fields are dropped and removedSeq is set.
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*/
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public function tombstone(string $serviceId, string $mailbox, int $uidValidity, int $seq, int ...$uids): void
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{
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if ($uids === []) {
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return;
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}
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$this->dataStore->selectCollection(self::COLLECTION_NAME)->updateMany(
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[
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'sid' => $serviceId,
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'mailbox' => $mailbox,
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'uidValidity' => $uidValidity,
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'uid' => ['$in' => array_values($uids)],
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...self::LIVE,
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],
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[
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'$set' => ['removedSeq' => $seq, 'modSeq' => $seq],
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'$unset' => self::TOMBSTONE_UNSET,
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],
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);
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}
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/**
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* UIDs added, modified and removed after a change sequence.
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*
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* A message added after $since is an addition even if it was modified later;
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* a message both added and removed after $since is not reported at all.
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*
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* @return array{additions: int[], modifications: int[], deletions: int[]}
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*/
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public function changes(string $serviceId, string $mailbox, int $uidValidity, int $since): array
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{
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$key = ['sid' => $serviceId, 'mailbox' => $mailbox, 'uidValidity' => $uidValidity];
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return [
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'additions' => $this->findUids([...$key, ...self::LIVE, 'addedSeq' => ['$gt' => $since]]),
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'modifications' => $this->findUids([...$key, ...self::LIVE, 'addedSeq' => ['$lte' => $since], 'modSeq' => ['$gt' => $since]]),
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'deletions' => $this->findUids([...$key, 'addedSeq' => ['$lte' => $since], 'removedSeq' => ['$gt' => $since]]),
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];
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}
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/**
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* Delete tombstones removed at or before a change sequence.
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*
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* The caller records $upTo as the mailbox's purgedSeq: older signatures can no
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* longer be answered with deletions and get a reset instead.
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*/
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public function purgeTombstones(string $serviceId, string $mailbox, int $upTo): void
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{
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$this->dataStore->selectCollection(self::COLLECTION_NAME)->deleteMany([
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'sid' => $serviceId,
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'mailbox' => $mailbox,
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'removedSeq' => ['$lte' => $upTo],
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]);
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}
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/**
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* Delete all meta documents of a mailbox (any UIDVALIDITY), tombstones included.
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*/
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public function deleteByMailbox(string $serviceId, string $mailbox): void
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{
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$this->dataStore->selectCollection(self::COLLECTION_NAME)->deleteMany([
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'sid' => $serviceId,
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'mailbox' => $mailbox,
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]);
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}
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/**
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* Delete all meta documents of a service.
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*/
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public function deleteByService(string $serviceId): void
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{
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$this->dataStore->selectCollection(self::COLLECTION_NAME)->deleteMany(['sid' => $serviceId]);
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}
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/**
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* @return int[]
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*/
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private function findUids(array $filter): array
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{
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$cursor = $this->dataStore->selectCollection(self::COLLECTION_NAME)->find(
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$filter,
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['projection' => ['uid' => 1], 'sort' => ['uid' => 1]],
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);
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$uids = [];
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foreach ($cursor as $document) {
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$uids[] = (int) $document['uid'];
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}
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return $uids;
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}
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}
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