tdlight/td/telegram/net/SessionMultiProxy.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/telegram/net/SessionMultiProxy.h"
#include "td/telegram/net/SessionProxy.h"
#include "td/utils/format.h"
#include "td/utils/logging.h"
#include "td/utils/Slice.h"
namespace td {
SessionMultiProxy::SessionMultiProxy() = default;
SessionMultiProxy::~SessionMultiProxy() = default;
SessionMultiProxy::SessionMultiProxy(int32 session_count, std::shared_ptr<AuthDataShared> shared_auth_data,
bool is_main, bool use_pfs, bool allow_media_only, bool is_media, bool is_cdn)
: session_count_(session_count)
, auth_data_(std::move(shared_auth_data))
, is_main_(is_main)
, use_pfs_(use_pfs)
, allow_media_only_(allow_media_only)
, is_media_(is_media)
, is_cdn_(is_cdn) {
if (allow_media_only_) {
CHECK(is_media_);
}
}
void SessionMultiProxy::send(NetQueryPtr query) {
size_t pos = 0;
// TODO temporary hack with total_timeout_limit
if (query->auth_flag() == NetQuery::AuthFlag::On && query->total_timeout_limit > 50) {
if (query->session_rand()) {
pos = query->session_rand() % sessions_.size();
} else {
pos = pos_++ % sessions_.size();
}
}
query->debug(PSTRING() << get_name() << ": send to proxy #" << pos);
send_closure(sessions_[pos], &SessionProxy::send, std::move(query));
}
void SessionMultiProxy::update_main_flag(bool is_main) {
LOG(INFO) << "Update " << get_name() << " is_main to " << is_main;
is_main_ = is_main;
for (auto &session : sessions_) {
send_closure(session, &SessionProxy::update_main_flag, is_main);
}
}
void SessionMultiProxy::update_session_count(int32 session_count) {
update_options(session_count, use_pfs_);
}
void SessionMultiProxy::update_use_pfs(bool use_pfs) {
update_options(session_count_, use_pfs);
}
void SessionMultiProxy::update_options(int32 session_count, bool use_pfs) {
bool changed = false;
if (session_count != session_count_) {
session_count_ = session_count;
if (session_count_ <= 0) {
session_count_ = 1;
}
if (session_count_ > 100) {
session_count_ = 100;
}
LOG(INFO) << "Update " << get_name() << " session_count to " << session_count_;
changed = true;
}
if (use_pfs != use_pfs_) {
bool old_pfs_flag = get_pfs_flag();
use_pfs_ = use_pfs;
if (old_pfs_flag != get_pfs_flag()) {
LOG(INFO) << "Update " << get_name() << " use_pfs to " << use_pfs_;
changed = true;
}
}
if (changed) {
init();
}
}
void SessionMultiProxy::update_mtproto_header() {
init();
}
void SessionMultiProxy::start_up() {
init();
}
bool SessionMultiProxy::get_pfs_flag() const {
return (!allow_media_only_ && use_pfs_); // pfs is not supported in media only DCs
}
void SessionMultiProxy::init() {
sessions_.clear();
if (is_main_) {
LOG(WARNING) << tag("session_count", session_count_);
}
for (int32 i = 0; i < session_count_; i++) {
string name = PSTRING() << "Session" << get_name().substr(Slice("SessionMulti").size())
<< format::cond(session_count_ > 1, format::concat("#", i));
sessions_.push_back(create_actor<SessionProxy>(name, auth_data_, is_main_, allow_media_only_, is_media_,
get_pfs_flag(), is_main_ && i != 0, is_cdn_));
}
}
} // namespace td