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// Copyright (C) 2016-2017 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 <agent/ca_process.h>
#include <agent/ca_controller.h>
#include <agent/ca_response_creator_factory.h>
#include <agent/ca_log.h>
#include <asiolink/io_address.h>
#include <asiolink/io_error.h>
#include <cc/command_interpreter.h>
#include <http/listener.h>
#include <boost/pointer_cast.hpp>
using namespace isc::asiolink;
using namespace isc::http;
using namespace isc::process;
// Temporarily hardcoded configuration.
/// @todo: remove once 5134 is merged.
namespace {
const long REQUEST_TIMEOUT = 10000;
}
namespace isc {
namespace agent {
CtrlAgentProcess::CtrlAgentProcess(const char* name,
const asiolink::IOServicePtr& io_service)
: DProcessBase(name, io_service, DCfgMgrBasePtr(new CtrlAgentCfgMgr())) {
}
CtrlAgentProcess::~CtrlAgentProcess() {
}
void
CtrlAgentProcess::init() {
}
void
CtrlAgentProcess::run() {
LOG_INFO(agent_logger, CTRL_AGENT_STARTED).arg(VERSION);
try {
// Register commands.
CtrlAgentControllerPtr controller =
boost::dynamic_pointer_cast<CtrlAgentController>(
CtrlAgentController::instance());
controller->registerCommands();
// Create response creator factory first. It will be used to generate
// response creators. Each response creator will be used to generate
// answer to specific request.
HttpResponseCreatorFactoryPtr rcf(new CtrlAgentResponseCreatorFactory());
DCfgContextBasePtr base_ctx = getCfgMgr()->getContext();
CtrlAgentCfgContextPtr ctx =
boost::dynamic_pointer_cast<CtrlAgentCfgContext>(base_ctx);
if (!ctx) {
isc_throw(Unexpected, "Interal logic error: bad context type");
}
/// @todo: If the parameter is a hostname, we need to resolve it.
IOAddress server_address("::");
try {
server_address = IOAddress(ctx->getHttpHost());
} catch (const IOError& e) {
isc_throw(BadValue, "Failed to convert " << ctx->getHttpHost()
<< " to IP address:" << e.what());
}
uint16_t server_port = ctx->getHttpPort();
// Create http listener. It will open up a TCP socket and be prepared
// to accept incoming connection.
HttpListener http_listener(*getIoService(), server_address,
server_port, rcf, REQUEST_TIMEOUT);
// Instruct the http listener to actually open socket, install callback
// and start listening.
http_listener.start();
// Ok, seems we're good to go.
LOG_INFO(agent_logger, CTRL_AGENT_HTTP_SERVICE_STARTED)
.arg(server_address.toText()).arg(server_port);
// Let's process incoming data or expiring timers in a loop until
// shutdown condition is detected.
while (!shouldShutdown()) {
getIoService()->run_one();
}
stopIOService();
} catch (const std::exception& ex) {
LOG_FATAL(agent_logger, CTRL_AGENT_FAILED).arg(ex.what());
try {
stopIOService();
} catch (...) {
// Ignore double errors
}
isc_throw(DProcessBaseError,
"Process run method failed: " << ex.what());
}
try {
// Deregister commands.
CtrlAgentControllerPtr controller =
boost::dynamic_pointer_cast<CtrlAgentController>(
CtrlAgentController::instance());
controller->deregisterCommands();
} catch (const std::exception&) {
// What to do? Simply ignore...
}
LOG_DEBUG(agent_logger, DBGLVL_START_SHUT, CTRL_AGENT_RUN_EXIT);
}
isc::data::ConstElementPtr
CtrlAgentProcess::shutdown(isc::data::ConstElementPtr /*args*/) {
setShutdownFlag(true);
return (isc::config::createAnswer(0, "Control Agent is shutting down"));
}
isc::data::ConstElementPtr
CtrlAgentProcess::configure(isc::data::ConstElementPtr config_set,
bool check_only) {
int rcode = 0;
isc::data::ConstElementPtr answer = getCfgMgr()->simpleParseConfig(config_set,
check_only);
config::parseAnswer(rcode, answer);
return (answer);
}
CtrlAgentCfgMgrPtr
CtrlAgentProcess::getCtrlAgentCfgMgr() {
return(boost::dynamic_pointer_cast<CtrlAgentCfgMgr>(getCfgMgr()));
}
} // namespace isc::agent
} // namespace isc
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