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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef _MSG_ASYNC_PROTOCOL_V2_
#define _MSG_ASYNC_PROTOCOL_V2_
#include "Protocol.h"
#include "crypto_onwire.h"
#include "frames_v2.h"
class ProtocolV2 : public Protocol {
private:
enum State {
NONE,
START_CONNECT,
BANNER_CONNECTING,
HELLO_CONNECTING,
AUTH_CONNECTING,
AUTH_CONNECTING_SIGN,
SESSION_CONNECTING,
SESSION_RECONNECTING,
START_ACCEPT,
BANNER_ACCEPTING,
HELLO_ACCEPTING,
AUTH_ACCEPTING,
AUTH_ACCEPTING_MORE,
AUTH_ACCEPTING_SIGN,
SESSION_ACCEPTING,
READY,
THROTTLE_MESSAGE,
THROTTLE_BYTES,
THROTTLE_DISPATCH_QUEUE,
THROTTLE_DONE,
READ_MESSAGE_COMPLETE,
STANDBY,
WAIT,
CLOSED
};
static const char *get_state_name(int state) {
const char *const statenames[] = {"NONE",
"START_CONNECT",
"BANNER_CONNECTING",
"HELLO_CONNECTING",
"AUTH_CONNECTING",
"AUTH_CONNECTING_SIGN",
"SESSION_CONNECTING",
"SESSION_RECONNECTING",
"START_ACCEPT",
"BANNER_ACCEPTING",
"HELLO_ACCEPTING",
"AUTH_ACCEPTING",
"AUTH_ACCEPTING_MORE",
"AUTH_ACCEPTING_SIGN",
"SESSION_ACCEPTING",
"READY",
"THROTTLE_MESSAGE",
"THROTTLE_BYTES",
"THROTTLE_DISPATCH_QUEUE",
"THROTTLE_DONE",
"READ_MESSAGE_COMPLETE",
"STANDBY",
"WAIT",
"CLOSED"};
return statenames[state];
}
// TODO: move into auth_meta?
ceph::crypto::onwire::rxtx_t session_stream_handlers;
entity_name_t peer_name;
State state;
uint64_t peer_supported_features; // CEPH_MSGR2_FEATURE_*
uint64_t client_cookie;
uint64_t server_cookie;
uint64_t global_seq;
uint64_t connect_seq;
uint64_t peer_global_seq;
uint64_t message_seq;
bool reconnecting;
bool replacing;
bool can_write;
struct out_queue_entry_t {
bool is_prepared {false};
Message* m {nullptr};
};
std::map<int, std::list<out_queue_entry_t>> out_queue;
std::list<Message *> sent;
std::atomic<uint64_t> out_seq{0};
std::atomic<uint64_t> in_seq{0};
std::atomic<uint64_t> ack_left{0};
using ProtFuncPtr = void (ProtocolV2::*)();
Ct<ProtocolV2> *bannerExchangeCallback;
ceph::msgr::v2::FrameAssembler tx_frame_asm;
ceph::msgr::v2::FrameAssembler rx_frame_asm;
ceph::bufferlist rx_preamble;
ceph::bufferlist rx_epilogue;
ceph::msgr::v2::segment_bls_t rx_segments_data;
ceph::msgr::v2::Tag next_tag;
utime_t backoff; // backoff time
utime_t recv_stamp;
utime_t throttle_stamp;
struct {
ceph::bufferlist rxbuf;
ceph::bufferlist txbuf;
bool enabled {true};
} pre_auth;
bool keepalive;
bool write_in_progress = false;
std::ostream& _conn_prefix(std::ostream *_dout);
void run_continuation(Ct<ProtocolV2> *pcontinuation);
void run_continuation(Ct<ProtocolV2> &continuation);
Ct<ProtocolV2> *read(CONTINUATION_RXBPTR_TYPE<ProtocolV2> &next,
rx_buffer_t&& buffer);
template <class F>
Ct<ProtocolV2> *write(const std::string &desc,
CONTINUATION_TYPE<ProtocolV2> &next,
F &frame);
Ct<ProtocolV2> *write(const std::string &desc,
CONTINUATION_TYPE<ProtocolV2> &next,
ceph::bufferlist &buffer);
template <class F>
bool append_frame(F& frame);
void requeue_sent();
uint64_t discard_requeued_up_to(uint64_t out_seq, uint64_t seq);
void reset_recv_state();
void reset_security();
void reset_throttle();
Ct<ProtocolV2> *_fault();
void discard_out_queue();
void reset_session();
void prepare_send_message(uint64_t features, Message *m);
out_queue_entry_t _get_next_outgoing();
ssize_t write_message(Message *m, bool more);
void handle_message_ack(uint64_t seq);
CONTINUATION_DECL(ProtocolV2, _wait_for_peer_banner);
READ_BPTR_HANDLER_CONTINUATION_DECL(ProtocolV2, _handle_peer_banner);
READ_BPTR_HANDLER_CONTINUATION_DECL(ProtocolV2, _handle_peer_banner_payload);
Ct<ProtocolV2> *_banner_exchange(Ct<ProtocolV2> &callback);
Ct<ProtocolV2> *_wait_for_peer_banner();
Ct<ProtocolV2> *_handle_peer_banner(rx_buffer_t &&buffer, int r);
Ct<ProtocolV2> *_handle_peer_banner_payload(rx_buffer_t &&buffer, int r);
Ct<ProtocolV2> *handle_hello(ceph::bufferlist &payload);
CONTINUATION_DECL(ProtocolV2, read_frame);
CONTINUATION_DECL(ProtocolV2, finish_auth);
READ_BPTR_HANDLER_CONTINUATION_DECL(ProtocolV2, handle_read_frame_preamble_main);
READ_BPTR_HANDLER_CONTINUATION_DECL(ProtocolV2, handle_read_frame_segment);
READ_BPTR_HANDLER_CONTINUATION_DECL(ProtocolV2, handle_read_frame_epilogue_main);
CONTINUATION_DECL(ProtocolV2, throttle_message);
CONTINUATION_DECL(ProtocolV2, throttle_bytes);
CONTINUATION_DECL(ProtocolV2, throttle_dispatch_queue);
Ct<ProtocolV2> *read_frame();
Ct<ProtocolV2> *finish_auth();
Ct<ProtocolV2> *finish_client_auth();
Ct<ProtocolV2> *handle_read_frame_preamble_main(rx_buffer_t &&buffer, int r);
Ct<ProtocolV2> *read_frame_segment();
Ct<ProtocolV2> *handle_read_frame_segment(rx_buffer_t &&rx_buffer, int r);
Ct<ProtocolV2> *_handle_read_frame_segment();
Ct<ProtocolV2> *handle_read_frame_epilogue_main(rx_buffer_t &&buffer, int r);
Ct<ProtocolV2> *_handle_read_frame_epilogue_main();
Ct<ProtocolV2> *handle_read_frame_dispatch();
Ct<ProtocolV2> *handle_frame_payload();
Ct<ProtocolV2> *ready();
Ct<ProtocolV2> *handle_message();
Ct<ProtocolV2> *throttle_message();
Ct<ProtocolV2> *throttle_bytes();
Ct<ProtocolV2> *throttle_dispatch_queue();
Ct<ProtocolV2> *handle_keepalive2(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_keepalive2_ack(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_message_ack(ceph::bufferlist &payload);
public:
uint64_t connection_features;
ProtocolV2(AsyncConnection *connection);
virtual ~ProtocolV2();
virtual void connect() override;
virtual void accept() override;
virtual bool is_connected() override;
virtual void stop() override;
virtual void fault() override;
virtual void send_message(Message *m) override;
virtual void send_keepalive() override;
virtual void read_event() override;
virtual void write_event() override;
virtual bool is_queued() override;
private:
// Client Protocol
CONTINUATION_DECL(ProtocolV2, start_client_banner_exchange);
CONTINUATION_DECL(ProtocolV2, post_client_banner_exchange);
Ct<ProtocolV2> *start_client_banner_exchange();
Ct<ProtocolV2> *post_client_banner_exchange();
inline Ct<ProtocolV2> *send_auth_request() {
std::vector<uint32_t> empty;
return send_auth_request(empty);
}
Ct<ProtocolV2> *send_auth_request(std::vector<uint32_t> &allowed_methods);
Ct<ProtocolV2> *handle_auth_bad_method(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_auth_reply_more(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_auth_done(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_auth_signature(ceph::bufferlist &payload);
Ct<ProtocolV2> *send_client_ident();
Ct<ProtocolV2> *send_reconnect();
Ct<ProtocolV2> *handle_ident_missing_features(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_session_reset(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_session_retry(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_session_retry_global(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_wait(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_reconnect_ok(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_server_ident(ceph::bufferlist &payload);
// Server Protocol
CONTINUATION_DECL(ProtocolV2, start_server_banner_exchange);
CONTINUATION_DECL(ProtocolV2, post_server_banner_exchange);
CONTINUATION_DECL(ProtocolV2, server_ready);
Ct<ProtocolV2> *start_server_banner_exchange();
Ct<ProtocolV2> *post_server_banner_exchange();
Ct<ProtocolV2> *handle_auth_request(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_auth_request_more(ceph::bufferlist &payload);
Ct<ProtocolV2> *_handle_auth_request(ceph::bufferlist& auth_payload, bool more);
Ct<ProtocolV2> *_auth_bad_method(int r);
Ct<ProtocolV2> *handle_client_ident(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_ident_missing_features_write(int r);
Ct<ProtocolV2> *handle_reconnect(ceph::bufferlist &payload);
Ct<ProtocolV2> *handle_existing_connection(const AsyncConnectionRef& existing);
Ct<ProtocolV2> *reuse_connection(const AsyncConnectionRef& existing,
ProtocolV2 *exproto);
Ct<ProtocolV2> *send_server_ident();
Ct<ProtocolV2> *send_reconnect_ok();
Ct<ProtocolV2> *server_ready();
size_t get_current_msg_size() const;
};
#endif /* _MSG_ASYNC_PROTOCOL_V2_ */
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