ircd:Ⓜ️:fed: Add rooms::complexity request w/ console cmd.

include/ircd/m/fed/fed.h

@@ -40,6 +40,7 @@ namespace ircd::m::fed
 #include "backfill.h"
 #include "frontfill.h"
 #include "public_rooms.h"
+#include "rooms.h"
 #include "send.h"
 #include "groups.h"
 

include/ircd/m/fed/rooms.h

@@ -0,0 +1,35 @@
+// The Construct
+//
+// Copyright (C) The Construct Developers, Authors & Contributors
+// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice is present in all copies. The
+// full license for this software is available in the LICENSE file.
+
+#pragma once
+#define HAVE_IRCD_M_FED_ROOMS_H
+
+namespace ircd::m::fed::rooms
+{
+	struct complexity;
+};
+
+struct ircd::m::fed::rooms::complexity
+:request
+{
+	explicit operator json::object() const
+	{
+		return json::object
+		{
+			in.content
+		};
+	}
+
+	complexity(const m::id::room &room_id,
+	           const mutable_buffer &,
+	           opts);
+
+	complexity() = default;
+};

matrix/fed.cc

@@ -134,6 +134,43 @@ ircd::m::fed::send::send(const string_view &txnid,
 {
 }
 
+///////////////////////////////////////////////////////////////////////////////
+//
+// fed/rooms.h
+//
+
+ircd::m::fed::rooms::complexity::complexity(const m::id::room &room_id,
+                                            const mutable_buffer &buf_,
+                                            opts opts)
+:request{[&]
+{
+	if(!opts.remote)
+		opts.remote = room_id.host();
+
+	window_buffer buf{buf_};
+	if(likely(!defined(json::get<"uri"_>(opts.request))))
+	{
+		thread_local char ridbuf[768];
+		json::get<"uri"_>(opts.request) = fmt::sprintf
+		{
+			buf, "/_matrix/federation/unstable/rooms/%s/complexity",
+			url::encode(ridbuf, room_id)
+		};
+
+		consume(buf, size(json::get<"uri"_>(opts.request)));
+	}
+
+	if(likely(!defined(json::get<"method"_>(opts.request))))
+		json::get<"method"_>(opts.request) = "GET";
+
+	return request
+	{
+		buf, std::move(opts)
+	};
+}()}
+{
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 //
 // fed/public_rooms.h

modules/console.cc

@@ -12988,6 +12988,51 @@ console_cmd__fed__groups(opt &out, const string_view &line)
 	return true;
 }
 
+bool
+console_cmd__fed__rooms__complexity(opt &out, const string_view &line)
+{
+	const params param{line, " ",
+	{
+		"room_id", "remote"
+	}};
+
+	const auto room_id
+	{
+		m::room_id(param.at("room_id"))
+	};
+
+	const auto remote
+	{
+		param["remote"]
+	};
+
+	const unique_buffer<mutable_buffer> buf
+	{
+		16_KiB
+	};
+
+	m::fed::rooms::complexity::opts opts;
+	opts.remote = remote;
+	opts.dynamic = false;
+	m::fed::rooms::complexity request
+	{
+		room_id, buf, std::move(opts)
+	};
+
+	const auto code
+	{
+		request.get(out.timeout)
+	};
+
+	const json::object response
+	{
+		request
+	};
+
+	out << string_view{response} << std::endl;
+	return true;
+}
+
 bool
 console_cmd__fed__head(opt &out, const string_view &line)
 {