Initial open source release

deploy/migrations/0023_channel_admin_invites.up.sql

@@ -0,0 +1,22 @@
+-- 0023_channel_admin_invites: metadata needed by channel admin/pin/invite RPCs.
+
+ALTER TABLE channels
+    ADD COLUMN IF NOT EXISTS pinned_message_id INT NOT NULL DEFAULT 0;
+
+ALTER TABLE channel_update_events
+    DROP CONSTRAINT IF EXISTS channel_update_events_type_check;
+
+ALTER TABLE channel_update_events
+    ADD CONSTRAINT channel_update_events_type_check CHECK (
+        event_type IN (
+            'new_channel_message',
+            'edit_channel_message',
+            'delete_channel_messages',
+            'channel_participant',
+            'pinned_channel_messages',
+            'noop'
+        )
+    );
+
+CREATE INDEX IF NOT EXISTS channel_invites_hash_lookup_idx
+    ON channel_invite_hashes (hash, channel_id, invite_id);