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xmpp_connection.h
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xmpp_connection.h
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#ifndef __XMPP_CHANNEL_H__
#define __XMPP_CHANNEL_H__
#include <boost/asio/ip/tcp.hpp>
#include <boost/scoped_ptr.hpp>
#include <tbb/atomic.h>
#include <tbb/spin_mutex.h>
#include "base/timer.h"
#include "base/lifetime.h"
#include "net/address.h"
#include "xmpp/xmpp_channel_mux.h"
#include "xmpp/xmpp_state_machine.h"
#include "xmpp/xmpp_session.h"
class LifetimeActor;
class ShowXmppConnection;
class TcpServer;
class TcpSession;
class XmppChannelConfig;
class XmppClient;
class XmppConnectionEndpoint;
class XmppServer;
class XmppSession;
class XmppConnection {
public:
struct ProtoStats {
ProtoStats() {
open = 0;
close = 0;
keepalive = 0;
update = 0;
}
tbb::atomic<uint32_t> open;
tbb::atomic<uint32_t> close;
tbb::atomic<uint32_t> keepalive;
tbb::atomic<uint32_t> update;
};
struct ErrorStats {
ErrorStats() {
connect_error = 0;
session_close = 0;
open_fail = 0;
stream_feature_fail = 0;
handshake_fail = 0;
}
tbb::atomic<uint32_t> connect_error;
tbb::atomic<uint32_t> session_close;
tbb::atomic<uint32_t> open_fail;
tbb::atomic<uint32_t> stream_feature_fail;
tbb::atomic<uint32_t> handshake_fail;
};
XmppConnection(TcpServer *server, const XmppChannelConfig *config);
virtual ~XmppConnection();
void SetConfig(const XmppChannelConfig *);
// Invoked from XmppServer when a session is accepted.
virtual bool AcceptSession(XmppSession *session);
virtual void ReceiveMsg(XmppSession *session, const std::string &);
virtual boost::asio::ip::tcp::endpoint endpoint() const;
virtual boost::asio::ip::tcp::endpoint local_endpoint() const;
std::string endpoint_string() const;
std::string local_endpoint_string() const;
TcpServer *server() { return server_; }
XmppSession *CreateSession();
int GetTaskInstance() const { return GetTaskInstance(is_client_); }
std::string ToString() const;
std::string ToUVEKey() const;
std::string FromString() const;
void SetAdminDown(bool toggle);
bool Send(const uint8_t *data, size_t size);
// Xmpp connection messages
virtual bool SendOpen(XmppSession *session);
virtual bool SendOpenConfirm(XmppSession *session);
virtual bool SendStreamFeatureRequest(XmppSession *session);
virtual bool SendStartTls(XmppSession *session);
virtual bool SendProceedTls(XmppSession *session);
void SendKeepAlive();
void SendClose(XmppSession *session);
// Ssl Handshake callback response
void ProcessSslHandShakeResponse(SslSessionPtr session,
const boost::system::error_code& error);
// PubSub Messages
int ProcessXmppIqMessage(const XmppStanza::XmppMessage *);
// chat messages
int ProcessXmppChatMessage(const XmppStanza::XmppChatMessage *);
void StartKeepAliveTimer();
void StopKeepAliveTimer();
void set_session(XmppSession *session);
void clear_session();
void SetTo(const std::string &);
const XmppSession *session() const;
XmppSession *session();
bool logUVE() const { return !is_client_ && log_uve_; }
bool IsClient() const { return is_client_; }
virtual void ManagedDelete() = 0;
virtual void RetryDelete() = 0;
virtual LifetimeActor *deleter() = 0;
virtual const LifetimeActor *deleter() const = 0;
virtual LifetimeManager *lifetime_manager() = 0;
xmsm::XmState GetStateMcState() const;
xmsm::XmOpenConfirmState GetStateMcOpenConfirmState() const;
bool IsActiveChannel() const {
return state_machine_->IsActiveChannel();
}
XmppChannelMux *ChannelMux() {return mux_.get(); }
void SetChannelMux(XmppChannelMux *channel_mux) { mux_.reset(channel_mux); }
void Initialize() { state_machine_->Initialize(); }
void Clear() { state_machine_->Clear(); }
void SetAdminState(bool down) { state_machine_->SetAdminState(down); }
void Shutdown();
bool MayDelete() const;
bool IsDeleted() const;
std::string &GetComputeHostName() { return to_; }
std::string &GetControllerHostName() { return from_; }
std::string &GetFrom() { return from_; }
std::string &GetTo() { return to_; }
virtual void set_close_reason(const std::string &reason) = 0;
virtual void increment_flap_count() = 0;
virtual uint32_t flap_count() const = 0;
virtual const std::string last_flap_at() const = 0;
virtual void WriteReady();
friend class XmppStateMachineTest;
int GetConfiguredHoldTime() const {
return state_machine_->GetConfiguredHoldTime();
}
int GetNegotiatedHoldTime() const {
return state_machine_->hold_time();
}
std::string StateName() const {
return state_machine_->StateName();
}
std::string LastStateName() const {
return state_machine_->LastStateName();
}
std::string LastStateChangeAt() const {
return state_machine_->LastStateChangeAt();
}
std::string LastEvent() const {
return state_machine_->last_event();
}
uint32_t tx_open() const {
return stats_[1].open;
}
uint32_t tx_keepalive() const {
return stats_[1].keepalive;
}
uint32_t tx_close() const {
return stats_[1].close;
}
uint32_t tx_update() const {
return stats_[1].update;
}
uint32_t rx_open() const {
return stats_[0].open;
}
uint32_t rx_keepalive() const {
return stats_[0].keepalive;
}
uint32_t rx_close() const {
return stats_[0].close;
}
uint32_t rx_update() const {
return stats_[0].update;
}
void LogMsg(std::string msg);
bool disable_read() const { return disable_read_; }
void set_disable_read(bool disable_read) { disable_read_ = disable_read; }
XmppStateMachine *state_machine();
const XmppStateMachine *state_machine() const;
void set_state_machine(XmppStateMachine *state_machine) {
state_machine_.reset(state_machine);
}
void SwapXmppStateMachine(XmppConnection *other) {
state_machine_.swap(other->state_machine_);
}
void inc_connect_error();
void inc_session_close();
void inc_open_fail();
void inc_stream_feature_fail();
void inc_handshake_failure();
size_t get_connect_error();
size_t get_session_close();
size_t get_open_fail();
size_t get_stream_feature_fail();
size_t get_handshake_failure();
size_t get_sm_connect_attempts();
size_t get_sm_keepalive_count();
static const char *kAuthTypeNil;
static const char *kAuthTypeTls;
std::string GetXmppAuthenticationType() const;
protected:
TcpServer *server_;
XmppSession *session_;
const XmppChannelMux *channel_mux() const;
private:
bool KeepAliveTimerExpired();
void KeepaliveTimerErrorHanlder(std::string error_name,
std::string error_message);
XmppStanza::XmppMessage *XmppDecode(const std::string &msg);
void LogKeepAliveSend();
int GetTaskInstance(bool is_client) const;
boost::asio::ip::tcp::endpoint endpoint_;
boost::asio::ip::tcp::endpoint local_endpoint_;
const XmppChannelConfig *config_;
// Protection for session_ and keepalive_timer_
tbb::spin_mutex spin_mutex_;
Timer *keepalive_timer_;
bool is_client_;
bool log_uve_;
bool admin_down_;
bool disable_read_;
std::string from_; // bare jid
std::string to_;
bool auth_enabled_;
mutable std::string uve_key_str_;
boost::scoped_ptr<XmppStateMachine> state_machine_;
boost::scoped_ptr<XmppChannelMux> mux_;
std::auto_ptr<XmppStanza::XmppMessage> last_msg_;
ProtoStats stats_[2];
void IncProtoStats(unsigned int type);
ErrorStats error_stats_;
DISALLOW_COPY_AND_ASSIGN(XmppConnection);
};
class XmppServerConnection : public XmppConnection {
public:
XmppServerConnection(XmppServer *server, const XmppChannelConfig *config);
virtual ~XmppServerConnection();
virtual void ManagedDelete();
virtual void RetryDelete();
virtual LifetimeActor *deleter();
virtual const LifetimeActor *deleter() const;
virtual LifetimeManager *lifetime_manager();
XmppServer *server();
virtual void set_close_reason(const std::string &reason);
virtual uint32_t flap_count() const;
virtual void increment_flap_count();
virtual const std::string last_flap_at() const;
bool duplicate() const { return duplicate_; }
void set_duplicate() { duplicate_ = true; }
bool on_work_queue() const { return on_work_queue_; }
void set_on_work_queue() { on_work_queue_ = true; }
void clear_on_work_queue() { on_work_queue_ = false; }
XmppConnectionEndpoint *conn_endpoint() { return conn_endpoint_; }
void set_conn_endpoint(XmppConnectionEndpoint *conn_endpoint) {
conn_endpoint_ = conn_endpoint;
}
void FillShowInfo(ShowXmppConnection *show_connection) const;
private:
class DeleteActor;
bool duplicate_;
bool on_work_queue_;
XmppConnectionEndpoint *conn_endpoint_;
boost::scoped_ptr<DeleteActor> deleter_;
LifetimeRef<XmppServerConnection> server_delete_ref_;
};
class XmppClientConnection : public XmppConnection {
public:
XmppClientConnection(XmppClient *server, const XmppChannelConfig *config);
virtual ~XmppClientConnection();
virtual void ManagedDelete();
virtual void RetryDelete();
virtual LifetimeActor *deleter();
virtual const LifetimeActor *deleter() const;
virtual LifetimeManager *lifetime_manager();
XmppClient *server();
virtual void set_close_reason(const std::string &reason);
virtual uint32_t flap_count() const;
virtual void increment_flap_count();
virtual const std::string last_flap_at() const;
private:
class DeleteActor;
std::string close_reason_;
uint32_t flap_count_;
uint64_t last_flap_;
boost::scoped_ptr<DeleteActor> deleter_;
LifetimeRef<XmppClientConnection> server_delete_ref_;
};
class XmppConnectionEndpoint {
public:
XmppConnectionEndpoint(const std::string &client);
void set_close_reason(const std::string &close_reason);
uint32_t flap_count() const;
void increment_flap_count();
uint64_t last_flap() const;
std::string last_flap_at() const;
std::string client() const;
XmppConnection *connection();
const XmppConnection *connection() const;
void set_connection(XmppConnection *connection);
void reset_connection();
private:
std::string client_;
std::string close_reason_;
uint32_t flap_count_;
uint64_t last_flap_;
XmppConnection *connection_;
};
#endif // __XMPP_CHANNEL_H__