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VILLASnode/lib/node_list.cpp

113 lines
2.4 KiB
C++

/** Node list
*
* @author Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <villas/node_list.hpp>
#include <villas/node.hpp>
#include <villas/exceptions.hpp>
using namespace villas;
using namespace villas::node;
Node * NodeList::lookup(const uuid_t &uuid)
{
for (auto *n : *this) {
if (!uuid_compare(uuid, n->getUuid()))
return n;
}
return nullptr;
}
Node * NodeList::lookup(const std::string &name)
{
for (auto *n : *this) {
if (name == n->getNameShort())
return n;
}
return nullptr;
}
int NodeList::parse(json_t *json, NodeList &all)
{
Node *node;
const char *str;
size_t index;
json_t *elm;
auto logger = logging.get("node");
switch (json_typeof(json)) {
case JSON_STRING:
str = json_string_value(json);
node = all.lookup(str);
if (!node)
goto invalid2;
push_back(node);
break;
case JSON_ARRAY:
json_array_foreach(json, index, elm) {
if (!json_is_string(elm))
goto invalid;
str = json_string_value(elm);
node = all.lookup(str);
if (!node)
goto invalid;
push_back(node);
}
break;
default:
goto invalid;
}
return 0;
invalid:
throw RuntimeError("The node list must be an a single or an array of strings referring to the keys of the 'nodes' section");
return -1;
invalid2:
std::stringstream allss;
for (auto *n : all)
allss << " " << n->getNameShort();
throw RuntimeError("Unknown node {}. Choose of one of:{}", str, allss.str());
return 0;
}
json_t * NodeList::toJson() const
{
json_t *json_nodes = json_array();
for (const auto *n : *this)
json_array_append_new(json_nodes, n->toJson());
return json_nodes;
}