Initial open source release

deploy/migrations/0039_channel_message_views.up.sql

@@ -0,0 +1,27 @@
+ALTER TABLE channel_messages
+    ADD COLUMN IF NOT EXISTS views_count INT NOT NULL DEFAULT 0;
+
+CREATE TABLE IF NOT EXISTS channel_message_viewers (
+    channel_id     BIGINT      NOT NULL,
+    message_id     INT         NOT NULL,
+    viewer_user_id BIGINT      NOT NULL,
+    viewed_at      INT         NOT NULL DEFAULT 0,
+    created_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (channel_id, message_id, viewer_user_id),
+    CONSTRAINT channel_message_viewers_positive_check CHECK (
+        channel_id > 0 AND message_id > 0 AND viewer_user_id > 0
+    )
+) PARTITION BY HASH (channel_id);
+
+DO $$
+DECLARE
+    i int;
+BEGIN
+    FOR i IN 0..63 LOOP
+        EXECUTE format(
+            'CREATE TABLE IF NOT EXISTS channel_message_viewers_p%s PARTITION OF channel_message_viewers FOR VALUES WITH (MODULUS 64, REMAINDER %s)',
+            lpad(i::text, 2, '0'),
+            i
+        );
+    END LOOP;
+END $$;