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// Copyright (C) 2021-2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <asiolink/asio_wrapper.h>
#include <asiolink/io_address.h>
#include <asiolink/io_error.h>
#include <asiolink/io_service.h>
#include <cmd_http_listener.h>
#include <cmd_response_creator_factory.h>
#include <config_log.h>
#include <config/timeouts.h>
#include <util/multi_threading_mgr.h>
#include <boost/pointer_cast.hpp>
using namespace isc::asiolink;
using namespace isc::config;
using namespace isc::data;
using namespace isc::http;
using namespace isc::util;
namespace isc {
namespace config {
CmdHttpListener::CmdHttpListener(const IOAddress& address, const uint16_t port,
const uint16_t thread_pool_size /* = 1 */,
TlsContextPtr context /* = () */)
: address_(address), port_(port), thread_io_service_(), http_listener_(),
thread_pool_size_(thread_pool_size), thread_pool_(),
tls_context_(context) {
}
CmdHttpListener::~CmdHttpListener() {
stop();
}
void
CmdHttpListener::start() {
// We must be in multi-threading mode.
if (!MultiThreadingMgr::instance().getMode()) {
isc_throw(InvalidOperation, "CmdHttpListener cannot be started"
" when multi-threading is disabled");
}
// Punt if we're already started.
if (!isStopped()) {
isc_throw(InvalidOperation, "CmdHttpListener already started!");
}
try {
// Create a new IOService.
thread_io_service_.reset(new IOService());
// Create the response creator factory first. It will be used to
// generate response creators. Each response creator will be
// used to generate the answer to specific request.
HttpResponseCreatorFactoryPtr rcf(new CmdResponseCreatorFactory());
// Create the HTTP listener. It will open up a TCP socket and be
// prepared to accept incoming connections.
http_listener_.reset(new HttpListener(*thread_io_service_, address_,
port_, tls_context_, rcf,
HttpListener::RequestTimeout(TIMEOUT_AGENT_RECEIVE_COMMAND),
HttpListener::IdleTimeout(TIMEOUT_AGENT_IDLE_CONNECTION_TIMEOUT)));
// Create the thread pool with immediate start.
thread_pool_.reset(new HttpThreadPool(thread_io_service_, thread_pool_size_));
// Instruct the HTTP listener to actually open socket, install
// callback and start listening.
http_listener_->start();
// OK, seems like we're good to go.
LOG_DEBUG(command_logger, DBG_COMMAND, COMMAND_HTTP_LISTENER_STARTED)
.arg(thread_pool_size_)
.arg(address_)
.arg(port_)
.arg(tls_context_ ? "true" : "false");
} catch (const std::exception& ex) {
isc_throw(Unexpected, "CmdHttpListener::run failed:" << ex.what());
}
}
void
CmdHttpListener::checkPermissions() {
if (thread_pool_) {
thread_pool_->checkPausePermissions();
}
}
void
CmdHttpListener::pause() {
if (thread_pool_) {
thread_pool_->pause();
}
}
void
CmdHttpListener::resume() {
if (thread_pool_) {
thread_pool_->run();
}
}
void
CmdHttpListener::stop() {
// Nothing to do.
if (!thread_io_service_) {
return;
}
LOG_DEBUG(command_logger, DBG_COMMAND, COMMAND_HTTP_LISTENER_STOPPING)
.arg(address_)
.arg(port_);
// Stop the thread pool.
thread_pool_->stop();
// Get rid of the listener.
http_listener_.reset();
// Ditch the IOService.
thread_io_service_.reset();
LOG_DEBUG(command_logger, DBG_COMMAND, COMMAND_HTTP_LISTENER_STOPPED)
.arg(address_)
.arg(port_);
}
bool
CmdHttpListener::isRunning() {
if (thread_pool_) {
return (thread_pool_->isRunning());
}
return (false);
}
bool
CmdHttpListener::isStopped() {
if (thread_pool_) {
return (thread_pool_->isStopped());
}
return (true);
}
bool
CmdHttpListener::isPaused() {
if (thread_pool_) {
return (thread_pool_->isPaused());
}
return (false);
}
} // namespace isc::config
} // namespace isc
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