mirror of
https://github.com/matrix-construct/construct
synced 2024-12-29 17:04:03 +01:00
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_SERVER_LINK_H
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namespace ircd::server
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{
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string_view loghead(const mutable_buffer &out, const link &);
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string_view loghead(const link &);
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}
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/// A single connection to a remote peer.
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///
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struct ircd::server::link
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{
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static conf::item<size_t> tag_max_default;
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static conf::item<size_t> tag_commit_max_default;
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static uint64_t ids;
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uint64_t id {++ids}; ///< unique identifier of link.
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server::peer *peer; ///< backreference to peer
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std::shared_ptr<net::socket> socket; ///< link's socket
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std::list<tag> queue; ///< link's work queue
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time_t synack_ts {0L}; ///< time socket was estab
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bool op_init {false}; ///< link is connecting
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bool op_fini {false}; ///< link is disconnecting
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bool op_open {false};
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bool op_write {false}; ///< async operation state
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bool op_read {false}; ///< async operation state
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bool exclude {false}; ///< link is excluded
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template<class F> size_t accumulate_tags(F&&) const;
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void discard_read();
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const_buffer read(const mutable_buffer &buf);
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const_buffer process_read_next(const const_buffer &, tag &, bool &done);
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bool process_read(const_buffer &);
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void handle_readable_success();
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void handle_readable(const error_code &) noexcept;
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void wait_readable();
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const_buffer process_write_next(const const_buffer &);
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bool process_write(tag &);
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void handle_writable_success();
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void handle_writable(const error_code &) noexcept;
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void wait_writable();
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void handle_close(std::exception_ptr);
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void handle_open(std::exception_ptr);
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public:
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// config related
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size_t tag_max() const;
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size_t tag_commit_max() const;
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// indicator lights
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bool finished() const;
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bool opened() const noexcept;
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bool ready() const;
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bool busy() const;
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// stats for upload-side bytes across all tags
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size_t write_size() const;
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size_t write_completed() const;
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size_t write_remaining() const;
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// stats for download-side bytes ~across all tags~; note: this is not
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// accurate except for the one tag at the front of the queue having
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// its response processed.
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size_t read_size() const; // see: tag::read_total() notes
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size_t read_completed() const; // see: tag::read_completed() notes
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size_t read_remaining() const; // see: tag::read_remaining() notes
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// stats accumulated
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size_t write_total() const;
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size_t read_total() const;
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// stats for tags
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size_t tag_count() const;
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size_t tag_committed() const;
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size_t tag_uncommitted() const;
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// request panel
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void cancel_uncommitted(std::exception_ptr);
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void cancel_committed(std::exception_ptr);
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void cancel_all(std::exception_ptr);
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void submit(request &);
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// control panel
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bool close(const net::close_opts & = net::close_opts_default);
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bool open(const net::open_opts &);
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link(server::peer &);
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link(link &&) = delete;
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link(const link &) = delete;
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~link() noexcept;
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};
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