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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 <dhcpsrv/cfg_db_access.h>
#include <dhcpsrv/host_data_source_factory.h>
#include <dhcpsrv/host_mgr.h>
#include <dhcpsrv/lease_mgr_factory.h>
#include <boost/algorithm/string.hpp>
#include <boost/foreach.hpp>
#include <boost/lexical_cast.hpp>
#include <sstream>
#include <vector>
using namespace isc::data;
namespace isc {
namespace dhcp {
CfgDbAccess::CfgDbAccess()
: appended_parameters_(), lease_db_access_("type=memfile"),
host_db_access_() {
}
std::string
CfgDbAccess::getLeaseDbAccessString() const {
return (getAccessString(lease_db_access_));
}
std::string
CfgDbAccess::getHostDbAccessString() const {
return (getAccessString(host_db_access_));
}
void
CfgDbAccess::createManagers() const {
// Recreate lease manager.
LeaseMgrFactory::destroy();
LeaseMgrFactory::create(getLeaseDbAccessString());
// Recreate host data source.
HostDataSourceFactory::destroy();
if (!host_db_access_.empty()) {
HostMgr::create(getHostDbAccessString());
}
}
std::string
CfgDbAccess::getAccessString(const std::string& access_string) const {
std::ostringstream s;
s << access_string;
// Only append additional parameters if any parameters are specified
// in a configuration. For host database, no parameters mean that
// database access is disabled and thus we don't want to append any
// parameters.
if ((s.tellp() != std::streampos(0)) && (!appended_parameters_.empty())) {
s << " " << appended_parameters_;
}
return (s.str());
}
ElementPtr
CfgDbAccess::toElementDbAccessString(const std::string& dbaccess) {
ElementPtr result = Element::createMap();
// Code from DatabaseConnection::parse
if (dbaccess.empty()) {
return (result);
}
std::vector<std::string> tokens;
boost::split(tokens, dbaccess, boost::is_any_of(std::string("\t ")));
BOOST_FOREACH(std::string token, tokens) {
size_t pos = token.find("=");
if (pos != std::string::npos) {
std::string keyword = token.substr(0, pos);
std::string value = token.substr(pos + 1);
if ((keyword == "lfc-interval") ||
(keyword == "connect-timeout") ||
(keyword == "port")) {
// integer parameters
int64_t int_value;
try {
int_value = boost::lexical_cast<int64_t>(value);
result->set(keyword, Element::create(int_value));
} catch (...) {
isc_throw(ToElementError, "invalid DB access "
<< "integer parameter: "
<< keyword << "=" << value);
}
} else if ((keyword == "persist") ||
(keyword == "readonly")) {
if (value == "true") {
result->set(keyword, Element::create(true));
} else if (value == "false") {
result->set(keyword, Element::create(false));
} else {
isc_throw(ToElementError, "invalid DB access "
<< "boolean parameter: "
<< keyword << "=" << value);
}
} else if ((keyword == "type") ||
(keyword == "user") ||
(keyword == "password") ||
(keyword == "host") ||
(keyword == "name") ||
(keyword == "contact_points") ||
(keyword == "keyspace")) {
result->set(keyword, Element::create(value));
} else {
isc_throw(ToElementError, "unknown DB access parameter: "
<< keyword << "=" << value);
}
} else {
isc_throw(ToElementError, "Cannot unparse " << token
<< ", expected format is name=value");
}
}
return (result);
}
} // end of isc::dhcp namespace
} // end of isc namespace
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