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construct/include/ircd/server/peer.h

134 lines
3.6 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.
#pragma once
#define HAVE_IRCD_SERVER_PEER_H
namespace ircd::server
{
extern std::map<string_view, std::unique_ptr<peer>> peers;
}
/// Remote entity.
///
struct ircd::server::peer
{
struct err;
static constexpr const size_t &LINK_MAX{16};
static conf::item<bool> enable_ipv6;
static conf::item<size_t> link_min_default;
static conf::item<size_t> link_max_default;
static conf::item<seconds> error_clear_default;
static uint64_t ids;
uint64_t id {++ids};
net::ipport remote;
std::string hostcanon; // hostname:service[:port]
net::open_opts open_opts;
std::list<link> links;
std::unique_ptr<err> e;
std::string server_version;
size_t write_bytes {0};
size_t read_bytes {0};
bool op_resolve {false};
bool op_fini {false};
template<class F> size_t accumulate_links(F&&) const;
template<class F> size_t accumulate_tags(F&&) const;
void handle_finished();
void open_links();
void handle_resolve_A(const hostport &, const json::array &);
void handle_resolve_AAAA(const hostport &, const json::array &);
void handle_resolve_SRV(const hostport &, const json::array &);
void resolve(const hostport &, const net::dns::opts &);
void resolve(const hostport &);
void cleanup_canceled();
void disperse_uncommitted(link &);
void disperse(link &);
void del(link &);
void handle_head_recv(const link &, const tag &, const http::response::head &);
void handle_link_done(link &);
void handle_tag_done(link &, tag &) noexcept;
void handle_finished(link &);
void handle_error(link &, const std::system_error &);
void handle_error(link &, std::exception_ptr);
void handle_close(link &, std::exception_ptr);
void handle_open(link &, std::exception_ptr);
public:
// indicator lights
bool finished() const;
// config related
size_t link_min() const;
size_t link_max() const;
// stats for all links in peer
size_t link_count() const;
size_t link_busy() const;
size_t link_ready() const;
// stats for all tags in all links in peer
size_t tag_count() const;
size_t tag_committed() const;
size_t tag_uncommitted() const;
// stats for all upload-side bytes in all tags in all links
size_t write_size() const;
size_t write_completed() const;
size_t write_remaining() const;
// stats for download-side bytes in all tags in all links (note:
// see notes in link.h/tag.h about inaccuracy here).
size_t read_size() const;
size_t read_completed() const;
size_t read_remaining() const;
// stats accumulated over time
size_t write_total() const;
size_t read_total() const;
// link control panel
link &link_add(const size_t &num = 1);
link *link_get(const request &);
// request panel
void submit(request &);
// Error related
bool err_has() const;
string_view err_msg() const;
template<class... A> void err_set(A&&...);
bool err_clear();
bool err_check();
// control panel
void cancel();
void close(const net::close_opts & = net::close_opts_default);
peer(const net::hostport &hostport,
const net::open_opts &open_opts = {});
peer(peer &&) = delete;
peer(const peer &) = delete;
~peer() noexcept;
};
struct ircd::server::peer::err
{
std::exception_ptr eptr;
system_point etime;
err(const std::exception_ptr &);
~err() noexcept;
};