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nghttpx: Add --backend-http1-connections-per-frontend option

This commit is contained in:
Tatsuhiro Tsujikawa 2015-01-02 12:53:27 +09:00
parent a55a07940c
commit 7db1864766
7 changed files with 81 additions and 15 deletions
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21
src/shrpx.cc
View File

@ -712,6 +712,7 @@ void fill_default_config() {
mod_config()->argc = 0;
mod_config()->argv = nullptr;
mod_config()->downstream_connections_per_host = 8;
mod_config()->downstream_connections_per_frontend = 0;
mod_config()->listener_disable_timeout = 0.;
}
} // namespace
@ -843,9 +844,20 @@ Performance:
--backend-http1-connections-per-host=<NUM>
Set maximum number of backend concurrent HTTP/1
connections per host. This option is meaningful
when -s option is used.
when -s option is used. To limit the number of
connections per frontend for default mode, use
--backend-http1-connections-per-frontend.
Default: )"
<< get_config()->downstream_connections_per_host << R"(
--backend-http1-connections-per-frontend=<NUM>
Set maximum number of backend concurrent HTTP/1
connections per frontend. This option is only
used for default mode. 0 means unlimited. To
limit the number of connections per host for
HTTP/2 or SPDY proxy mode (-s option), use
--backend-http1-connections-per-host.
Default: )"
<< get_config()->downstream_connections_per_frontend << R"(
Timeout:
--frontend-http2-read-timeout=<SEC>
@ -1215,6 +1227,8 @@ int main(int argc, char **argv) {
{"listener-disable-timeout", required_argument, &flag, 64},
{"strip-incoming-x-forwarded-for", no_argument, &flag, 65},
{"accesslog-format", required_argument, &flag, 66},
{"backend-http1-connections-per-frontend", required_argument, &flag,
67},
{nullptr, 0, nullptr, 0}};
int option_index = 0;
@ -1519,6 +1533,11 @@ int main(int argc, char **argv) {
// --accesslog-format
cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_FORMAT, optarg);
break;
case 67:
// --backend-http1-connections-per-frontend
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND,
optarg);
break;
default:
break;
}

20
src/shrpx_config.cc
View File

@ -134,6 +134,8 @@ const char SHRPX_OPT_WORKER_FRONTEND_CONNECTIONS[] =
const char SHRPX_OPT_NO_LOCATION_REWRITE[] = "no-location-rewrite";
const char SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_HOST[] =
"backend-http1-connections-per-host";
const char SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND[] =
"backend-http1-connections-per-frontend";
const char SHRPX_OPT_LISTENER_DISABLE_TIMEOUT[] = "listener-disable-timeout";
namespace {
@ -1030,6 +1032,24 @@ int parse_config(const char *opt, const char *optarg) {
return 0;
}
if (util::strieq(opt, SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND)) {
int n;
if (parse_uint(&n, opt, optarg) != 0) {
return -1;
}
if (n < 0) {
LOG(ERROR) << opt << ": specify the integer more than or equal to 0";
return -1;
}
mod_config()->downstream_connections_per_frontend = n;
return 0;
}
if (util::strieq(opt, SHRPX_OPT_LISTENER_DISABLE_TIMEOUT)) {
return parse_timeval(&mod_config()->listener_disable_timeout, opt, optarg);
}

2
src/shrpx_config.h
View File

@ -125,6 +125,7 @@ extern const char SHRPX_OPT_ADD_RESPONSE_HEADER[];
extern const char SHRPX_OPT_WORKER_FRONTEND_CONNECTIONS[];
extern const char SHRPX_OPT_NO_LOCATION_REWRITE[];
extern const char SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_HOST[];
extern const char SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND[];
extern const char SHRPX_OPT_LISTENER_DISABLE_TIMEOUT[];
union sockaddr_union {
@ -230,6 +231,7 @@ struct Config {
size_t http2_upstream_connection_window_bits;
size_t http2_downstream_connection_window_bits;
size_t downstream_connections_per_host;
size_t downstream_connections_per_frontend;
// actual size of downstream_http_proxy_addr
size_t downstream_http_proxy_addrlen;
size_t read_rate;

26
src/shrpx_downstream_queue.cc
View File

@ -33,10 +33,11 @@ namespace shrpx {
DownstreamQueue::HostEntry::HostEntry() : num_active(0) {}
DownstreamQueue::DownstreamQueue(size_t conn_max_per_host)
DownstreamQueue::DownstreamQueue(size_t conn_max_per_host, bool unified_host)
: conn_max_per_host_(conn_max_per_host == 0
? std::numeric_limits<size_t>::max()
: conn_max_per_host) {}
: conn_max_per_host),
unified_host_(unified_host) {}
DownstreamQueue::~DownstreamQueue() {}
@ -59,8 +60,19 @@ DownstreamQueue::find_host_entry(const std::string &host) {
return (*itr).second;
}
const std::string &
DownstreamQueue::make_host_key(const std::string &host) const {
static std::string empty_key;
return unified_host_ ? empty_key : host;
}
const std::string &
DownstreamQueue::make_host_key(Downstream *downstream) const {
return make_host_key(downstream->get_request_http2_authority());
}
void DownstreamQueue::add_active(std::unique_ptr<Downstream> downstream) {
auto &ent = find_host_entry(downstream->get_request_http2_authority());
auto &ent = find_host_entry(make_host_key(downstream.get()));
++ent.num_active;
auto stream_id = downstream->get_stream_id();
@ -68,14 +80,14 @@ void DownstreamQueue::add_active(std::unique_ptr<Downstream> downstream) {
}
void DownstreamQueue::add_blocked(std::unique_ptr<Downstream> downstream) {
auto &ent = find_host_entry(downstream->get_request_http2_authority());
auto &ent = find_host_entry(make_host_key(downstream.get()));
auto stream_id = downstream->get_stream_id();
ent.blocked.insert(stream_id);
blocked_downstreams_[stream_id] = std::move(downstream);
}
bool DownstreamQueue::can_activate(const std::string &host) const {
auto itr = host_entries_.find(host);
auto itr = host_entries_.find(make_host_key(host));
if (itr == std::end(host_entries_)) {
return true;
}
@ -119,7 +131,7 @@ DownstreamQueue::remove_and_pop_blocked(int32_t stream_id) {
if (kv != std::end(active_downstreams_)) {
auto downstream = pop_downstream(kv, active_downstreams_);
auto &host = downstream->get_request_http2_authority();
auto &host = make_host_key(downstream.get());
auto &ent = find_host_entry(host);
--ent.num_active;
@ -148,7 +160,7 @@ DownstreamQueue::remove_and_pop_blocked(int32_t stream_id) {
if (kv != std::end(blocked_downstreams_)) {
auto downstream = pop_downstream(kv, blocked_downstreams_);
auto &host = downstream->get_request_http2_authority();
auto &host = make_host_key(downstream.get());
auto &ent = find_host_entry(host);
ent.blocked.erase(stream_id);

7
src/shrpx_downstream_queue.h
View File

@ -52,7 +52,7 @@ public:
typedef std::map<std::string, HostEntry> HostEntryMap;
// conn_max_per_host == 0 means no limit for downstream connection.
DownstreamQueue(size_t conn_max_per_host = 0);
DownstreamQueue(size_t conn_max_per_host = 0, bool unified_host = true);
~DownstreamQueue();
void add_pending(std::unique_ptr<Downstream> downstream);
void add_failure(std::unique_ptr<Downstream> downstream);
@ -82,6 +82,8 @@ public:
Downstream *find(int32_t stream_id);
const DownstreamMap &get_active_downstreams() const;
HostEntry &find_host_entry(const std::string &host);
const std::string &make_host_key(const std::string &host) const;
const std::string &make_host_key(Downstream *downstream) const;
// Maximum number of concurrent connections to the same host.
size_t conn_max_per_host_;
@ -98,6 +100,9 @@ private:
DownstreamMap active_downstreams_;
// Downstream objects, blocked by conn_max_per_host_
DownstreamMap blocked_downstreams_;
// true if downstream host is treated as the same. Used for reverse
// proxying.
bool unified_host_;
};
} // namespace shrpx

8
src/shrpx_http2_upstream.cc
View File

@ -569,9 +569,13 @@ void settings_timeout_cb(struct ev_loop *loop, ev_timer *w, int revents) {
} // namespace
Http2Upstream::Http2Upstream(ClientHandler *handler)
: downstream_queue_(get_config()->http2_proxy
: downstream_queue_(
get_config()->http2_proxy
? get_config()->downstream_connections_per_host
: 0),
: get_config()->downstream_proto == PROTO_HTTP
? get_config()->downstream_connections_per_frontend
: 0,
!get_config()->http2_proxy),
handler_(handler), session_(nullptr), data_pending_(nullptr),
data_pendinglen_(0), deferred_(false) {

8
src/shrpx_spdy_upstream.cc
View File

@ -400,9 +400,13 @@ uint32_t infer_upstream_rst_stream_status_code(uint32_t downstream_error_code) {
} // namespace
SpdyUpstream::SpdyUpstream(uint16_t version, ClientHandler *handler)
: downstream_queue_(get_config()->http2_proxy
: downstream_queue_(
get_config()->http2_proxy
? get_config()->downstream_connections_per_host
: 0),
: get_config()->downstream_proto == PROTO_HTTP
? get_config()->downstream_connections_per_frontend
: 0,
!get_config()->http2_proxy),
handler_(handler), session_(nullptr) {
spdylay_session_callbacks callbacks;
memset(&callbacks, 0, sizeof(callbacks));