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construct/modules/federation/federation.cc

366 lines
7.1 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 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.
using namespace ircd;
mapi::header
IRCD_MODULE
{
"Federation :General Library and Utils"
};
namespace ircd::m::feds
{
struct version;
}
struct ircd::m::feds::version
:m::v1::version
{
char origin[256];
char buf[16_KiB];
version(const string_view &origin)
:m::v1::version{[&]
{
m::v1::version::opts opts;
opts.dynamic = false;
opts.remote = string_view{this->origin, strlcpy(this->origin, origin)};
return m::v1::version{mutable_buffer{buf}, std::move(opts)};
}()}
{}
version(const version &) = delete;
version &operator=(const version &) = delete;
};
std::list<m::feds::version>
feds__version(const m::room::id &room_id)
{
std::list<m::feds::version> reqs;
m::room::origins{room_id}.for_each([&reqs]
(const string_view &origin)
{
const auto emsg
{
ircd::server::errmsg(origin)
};
if(!emsg) try
{
reqs.emplace_back(origin);
}
catch(const std::exception &)
{
return;
}
});
return std::move(reqs);
}
extern "C" void
feds__version(const m::room::id &room_id, std::ostream &out)
{
auto reqs
{
feds__version(room_id)
};
auto all
{
ctx::when_all(begin(reqs), end(reqs))
};
all.wait(30s, std::nothrow);
for(auto &req : reqs) try
{
if(req.wait(1ms, std::nothrow))
{
const auto code{req.get()};
const json::object &response{req};
out << "+ " << std::setw(40) << std::left << req.origin
<< " " << string_view{response}
<< std::endl;
}
else cancel(req);
}
catch(const std::exception &e)
{
out << "- " << std::setw(40) << std::left << req.origin
<< " " << e.what()
<< std::endl;
}
}
extern "C" void
feds__event(const m::event::id &event_id, std::ostream &out)
{
const m::room::id::buf room_id{[&event_id]
{
const m::event::fetch event
{
event_id
};
return m::room::id::buf{at<"room_id"_>(event)};
}()};
struct req
:m::v1::event
{
char origin[256];
char buf[96_KiB];
req(const m::event::id &event_id, const string_view &origin)
:m::v1::event{[&]
{
m::v1::event::opts opts;
opts.dynamic = false;
opts.remote = string_view{this->origin, strlcpy(this->origin, origin)};
return m::v1::event{event_id, mutable_buffer{buf}, std::move(opts)};
}()}
{}
};
std::list<req> reqs;
const m::room::origins origins{room_id};
origins.for_each([&out, &event_id, &reqs]
(const string_view &origin)
{
const auto emsg
{
ircd::server::errmsg(origin)
};
if(emsg)
{
out << "! " << origin << " " << emsg << std::endl;
return;
}
try
{
reqs.emplace_back(event_id, origin);
}
catch(const std::exception &e)
{
out << "! " << origin << " " << e.what() << std::endl;
return;
}
});
auto all
{
ctx::when_all(begin(reqs), end(reqs))
};
all.wait(30s, std::nothrow);
for(auto &req : reqs) try
{
if(req.wait(1ms, std::nothrow))
{
const auto code{req.get()};
out << "+ " << req.origin << " " << http::status(code) << std::endl;
}
else cancel(req);
}
catch(const std::exception &e)
{
out << "- " << req.origin << " " << e.what() << std::endl;
}
}
extern "C" void
feds__head(const m::room::id &room_id,
const m::user::id &user_id,
std::ostream &out)
{
struct req
:m::v1::make_join
{
char origin[256];
char buf[16_KiB];
req(const m::room::id &room_id, const m::user::id &user_id, const string_view &origin)
:m::v1::make_join{[this, &room_id, &user_id, &origin]
{
m::v1::make_join::opts opts;
opts.remote = string_view{this->origin, strlcpy(this->origin, origin)};
return m::v1::make_join{room_id, user_id, mutable_buffer{buf}, std::move(opts)};
}()}
{}
};
std::list<req> reqs;
const m::room::origins origins{room_id};
origins.for_each([&out, &room_id, &user_id, &reqs]
(const string_view &origin)
{
const auto emsg
{
ircd::server::errmsg(origin)
};
if(emsg)
{
out << "! " << origin << " " << emsg << std::endl;
return;
}
try
{
reqs.emplace_back(room_id, user_id, origin);
}
catch(const std::exception &e)
{
out << "! " << origin << " " << e.what() << std::endl;
}
});
auto all
{
ctx::when_all(begin(reqs), end(reqs))
};
all.wait(30s, std::nothrow);
for(auto &req : reqs) try
{
if(req.wait(1ms, std::nothrow))
{
const auto code{req.get()};
const json::object &response{req};
const json::object &event{response.at("event")};
const json::array prev_events
{
event.at("prev_events")
};
out << "+ " << std::setw(40) << std::left << req.origin;
out << " " << event.at("depth");
for(const json::array prev_event : prev_events)
{
const auto &prev_event_id
{
unquote(prev_event.at(0))
};
out << " " << string_view{prev_event_id};
};
out << std::endl;
}
else cancel(req);
}
catch(const std::exception &e)
{
out << "- " << req.origin << " " << e.what() << std::endl;
}
}
extern "C" void
feds__backfill(const m::room::id &room_id,
const m::event::id &event_id,
const size_t &limit,
std::ostream &out)
{
struct req
:m::v1::backfill
{
char origin[256];
char buf[16_KiB];
req(const m::room::id &room_id, const m::event::id &event_id, const string_view &origin, const size_t &limit)
:m::v1::backfill{[&]
{
m::v1::backfill::opts opts;
opts.remote = string_view{this->origin, strlcpy(this->origin, origin)};
opts.event_id = event_id;
opts.limit = limit;
opts.dynamic = true;
return m::v1::backfill{room_id, mutable_buffer{buf}, std::move(opts)};
}()}
{}
};
std::list<req> reqs;
const m::room::origins origins{room_id};
origins.for_each([&out, &room_id, &event_id, &limit, &reqs]
(const string_view &origin)
{
const auto emsg
{
ircd::server::errmsg(origin)
};
if(!emsg) try
{
reqs.emplace_back(room_id, event_id, origin, limit);
}
catch(const std::exception &e)
{
return;
}
});
auto all
{
ctx::when_all(begin(reqs), end(reqs))
};
all.wait(30s, std::nothrow);
std::map<string_view, std::set<const req *>> grid;
for(auto &req : reqs) try
{
if(req.wait(1ms, std::nothrow))
{
const auto code{req.get()};
const json::object &response{req};
const json::array pdus
{
response.at("pdus")
};
for(const json::object &pdu : pdus)
{
const auto &event_id
{
unquote(pdu.at("event_id"))
};
grid[event_id].emplace(&req);
}
}
else cancel(req);
}
catch(const std::exception &e)
{
out << "- " << req.origin << " " << e.what() << std::endl;
}
size_t i(0);
for(const auto &p : grid)
out << i++ << " " << p.first << std::endl;
for(size_t j(0); j < i; ++j)
out << "| " << std::left << std::setw(2) << j;
out << "|" << std::endl;
for(const auto &req : reqs)
{
for(const auto &p : grid)
out << "| " << (p.second.count(&req)? '+' : ' ') << " ";
out << "| " << req.origin << std::endl;
}
}