nghttp2/src/shrpx_worker.cc

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/*
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* nghttp2 - HTTP/2 C Library
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*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "shrpx_worker.h"
#include <unistd.h>
#include <sys/socket.h>
#include <memory>
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#include <event.h>
#include <event2/bufferevent.h>
#include "shrpx_ssl.h"
#include "shrpx_thread_event_receiver.h"
#include "shrpx_log.h"
#include "shrpx_http2_session.h"
#include "shrpx_worker_config.h"
#include "shrpx_connect_blocker.h"
#include "util.h"
#include "libevent_util.h"
using namespace nghttp2;
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namespace shrpx {
Worker::Worker(const WorkerInfo *info)
: sv_ssl_ctx_(info->sv_ssl_ctx),
cl_ssl_ctx_(info->cl_ssl_ctx),
fd_(info->sv[1])
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{}
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Worker::~Worker()
{
shutdown(fd_, SHUT_WR);
close(fd_);
}
namespace {
void readcb(bufferevent *bev, void *arg)
{
auto receiver = static_cast<ThreadEventReceiver*>(arg);
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receiver->on_read(bev);
}
} // namespace
namespace {
void eventcb(bufferevent *bev, short events, void *arg)
{
if(events & BEV_EVENT_EOF) {
LOG(ERROR) << "Connection to main thread lost: eof";
}
if(events & BEV_EVENT_ERROR) {
LOG(ERROR) << "Connection to main thread lost: network error";
}
}
} // namespace
void Worker::run()
{
(void)reopen_log_files();
auto evbase = std::unique_ptr<event_base, decltype(&event_base_free)>
(event_base_new(), event_base_free);
if(!evbase) {
LOG(ERROR) << "event_base_new() failed";
return;
}
auto bev = std::unique_ptr<bufferevent, decltype(&bufferevent_free)>
(bufferevent_socket_new(evbase.get(), fd_, BEV_OPT_DEFER_CALLBACKS),
bufferevent_free);
if(!bev) {
LOG(ERROR) << "bufferevent_socket_new() failed";
return;
}
std::unique_ptr<Http2Session> http2session;
std::unique_ptr<ConnectBlocker> http1_connect_blocker;
if(get_config()->downstream_proto == PROTO_HTTP2) {
http2session = util::make_unique<Http2Session>(evbase.get(), cl_ssl_ctx_);
if(http2session->init_notification() == -1) {
DIE();
}
} else {
http1_connect_blocker = util::make_unique<ConnectBlocker>();
if(http1_connect_blocker->init(evbase.get()) == -1) {
DIE();
}
}
auto receiver = util::make_unique<ThreadEventReceiver>
(evbase.get(),
sv_ssl_ctx_,
http2session.get(),
http1_connect_blocker.get());
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util::bev_enable_unless(bev.get(), EV_READ);
bufferevent_setcb(bev.get(), readcb, nullptr, eventcb, receiver.get());
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event_base_loop(evbase.get(), 0);
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}
void start_threaded_worker(WorkerInfo *info)
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{
Worker worker(info);
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worker.run();
}
} // namespace shrpx