nghttp2/src/shrpx_worker.h

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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.
*/
#ifndef SHRPX_WORKER_H
#define SHRPX_WORKER_H
#include "shrpx.h"
#include <mutex>
#include <vector>
#include <thread>
#ifndef NOTHREADS
#include <future>
#endif // NOTHREADS
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#include <openssl/ssl.h>
#include <openssl/err.h>
#include <ev.h>
#include "shrpx_config.h"
#include "shrpx_downstream_connection_pool.h"
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#include "memchunk.h"
using namespace nghttp2;
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namespace shrpx {
class Http2Session;
class ConnectBlocker;
namespace ssl {
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class CertLookupTree;
} // namespace ssl
struct WorkerStat {
WorkerStat() : num_connections(0), next_downstream(0) {}
size_t num_connections;
// Next downstream index in Config::downstream_addrs. For HTTP/2
// downstream connections, this is always 0. For HTTP/1, this is
// used as load balancing.
size_t next_downstream;
};
enum WorkerEventType {
NEW_CONNECTION = 0x01,
REOPEN_LOG = 0x02,
GRACEFUL_SHUTDOWN = 0x03,
RENEW_TICKET_KEYS = 0x04,
};
struct WorkerEvent {
WorkerEventType type;
struct {
sockaddr_union client_addr;
size_t client_addrlen;
int client_fd;
};
std::shared_ptr<TicketKeys> ticket_keys;
};
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class Worker {
public:
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Worker(struct ev_loop *loop, SSL_CTX *sv_ssl_ctx, SSL_CTX *cl_ssl_ctx,
ssl::CertLookupTree *cert_tree,
const std::shared_ptr<TicketKeys> &ticket_keys);
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~Worker();
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void run_async();
void wait();
void process_events();
void send(const WorkerEvent &event);
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ssl::CertLookupTree *get_cert_lookup_tree() const;
const std::shared_ptr<TicketKeys> &get_ticket_keys() const;
void set_ticket_keys(std::shared_ptr<TicketKeys> ticket_keys);
WorkerStat *get_worker_stat();
DownstreamConnectionPool *get_dconn_pool();
Http2Session *next_http2_session();
ConnectBlocker *get_connect_blocker() const;
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struct ev_loop *get_loop() const;
SSL_CTX *get_sv_ssl_ctx() const;
SSL_CTX *get_cl_ssl_ctx() const;
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void set_graceful_shutdown(bool f);
bool get_graceful_shutdown() const;
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MemchunkPool *get_mcpool();
void schedule_clear_mcpool();
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private:
std::vector<std::unique_ptr<Http2Session>> http2sessions_;
size_t next_http2session_;
#ifndef NOTHREADS
std::future<void> fut_;
#endif // NOTHREADS
std::mutex m_;
std::vector<WorkerEvent> q_;
ev_async w_;
ev_timer mcpool_clear_timer_;
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MemchunkPool mcpool_;
DownstreamConnectionPool dconn_pool_;
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WorkerStat worker_stat_;
struct ev_loop *loop_;
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// Following fields are shared across threads if
// get_config()->tls_ctx_per_worker == true.
SSL_CTX *sv_ssl_ctx_;
SSL_CTX *cl_ssl_ctx_;
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ssl::CertLookupTree *cert_tree_;
std::shared_ptr<TicketKeys> ticket_keys_;
std::unique_ptr<ConnectBlocker> connect_blocker_;
bool graceful_shutdown_;
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};
} // namespace shrpx
#endif // SHRPX_WORKER_H