Initial open source release

deploy/migrations/0046_channel_forum_topics.up.sql

@@ -0,0 +1,55 @@
+-- 0046_channel_forum_topics: forum topic read model.
+--
+-- Topic ids are the channel service message ids produced by
+-- messages.createForumTopic. Messages stay single-copy in channel_messages;
+-- this table stores the bounded topic index/read counters TDesktop needs for
+-- messages.getForumTopics/getForumTopicsByID.
+
+CREATE TABLE IF NOT EXISTS channel_forum_topics (
+    channel_id                BIGINT      NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
+    topic_id                  INT         NOT NULL,
+    creator_user_id           BIGINT      NOT NULL REFERENCES users(id) ON DELETE RESTRICT,
+    title                     TEXT        NOT NULL DEFAULT '',
+    icon_color                INT         NOT NULL DEFAULT 0,
+    icon_emoji_id             BIGINT      NOT NULL DEFAULT 0,
+    title_missing             BOOLEAN     NOT NULL DEFAULT false,
+    closed                    BOOLEAN     NOT NULL DEFAULT false,
+    hidden                    BOOLEAN     NOT NULL DEFAULT false,
+    pinned                    BOOLEAN     NOT NULL DEFAULT false,
+    pinned_order              INT         NOT NULL DEFAULT 0,
+    date                      INT         NOT NULL,
+    top_message_id            INT         NOT NULL DEFAULT 0,
+    read_inbox_max_id         INT         NOT NULL DEFAULT 0,
+    read_outbox_max_id        INT         NOT NULL DEFAULT 0,
+    unread_count              INT         NOT NULL DEFAULT 0,
+    unread_mentions_count     INT         NOT NULL DEFAULT 0,
+    unread_reactions_count    INT         NOT NULL DEFAULT 0,
+    unread_poll_votes_count   INT         NOT NULL DEFAULT 0,
+    deleted                   BOOLEAN     NOT NULL DEFAULT false,
+    created_at                TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at                TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (channel_id, topic_id),
+    CONSTRAINT channel_forum_topics_title_check CHECK (title <> '' OR title_missing),
+    CONSTRAINT channel_forum_topics_ids_check CHECK (topic_id > 0 AND top_message_id >= 0)
+) PARTITION BY HASH (channel_id);
+
+CREATE INDEX IF NOT EXISTS channel_forum_topics_page_idx
+    ON channel_forum_topics (channel_id, pinned DESC, pinned_order DESC, date DESC, topic_id DESC)
+    WHERE NOT deleted;
+
+CREATE INDEX IF NOT EXISTS channel_forum_topics_title_idx
+    ON channel_forum_topics (channel_id, lower(title), date DESC, topic_id DESC)
+    WHERE NOT deleted;
+
+DO $$
+DECLARE
+    i int;
+BEGIN
+    FOR i IN 0..63 LOOP
+        EXECUTE format(
+            'CREATE TABLE IF NOT EXISTS channel_forum_topics_p%s PARTITION OF channel_forum_topics FOR VALUES WITH (MODULUS 64, REMAINDER %s)',
+            lpad(i::text, 2, '0'),
+            i
+        );
+    END LOOP;
+END $$;