blob: d139e8bff3c0199eabed97b57ce68eda84fba627 [file] [log] [blame]
/*
* Copyright (C) 2018 CESNET, https://photonics.cesnet.cz/
* Copyright (C) 2018 FIT CVUT, https://fit.cvut.cz/
*
* Written by Václav Kubernát <kubervac@fit.cvut.cz>
*
*/
#include <boost/algorithm/string/predicate.hpp>
#include <boost/mpl/for_each.hpp>
#include <iostream>
#include <sstream>
#include "UniqueResource.hpp"
#include "datastore_access.hpp"
#include "interpreter.hpp"
#include "utils.hpp"
struct pathToStringVisitor : boost::static_visitor<std::string> {
std::string operator()(const module_& path) const
{
using namespace std::string_literals;
return "/"s + boost::get<module_>(path).m_name + ":*";
}
std::string operator()(const schemaPath_& path) const
{
return pathToSchemaString(path, Prefixes::WhenNeeded);
}
std::string operator()(const dataPath_& path) const
{
return pathToDataString(path, Prefixes::WhenNeeded);
}
};
namespace {
void printTree(const DatastoreAccess::Tree tree)
{
for (auto it = tree.begin(); it != tree.end(); it++) {
auto [path, value] = *it;
if (value.type() == typeid(special_) && boost::get<special_>(value).m_value == SpecialValue::LeafList) {
auto leafListPrefix = path;
std::cout << path << " = " << leafDataToString(value) << std::endl;
while (it + 1 != tree.end() && boost::starts_with((it + 1)->first, leafListPrefix)) {
++it;
std::cout << stripLeafListValueFromPath(it->first) << " = " << leafDataToString(it->second) << std::endl;
}
} else {
std::cout << path << " = " << leafDataToString(value) << std::endl;
}
}
}
}
template <typename PathType>
std::string pathToString(const PathType& path)
{
return boost::apply_visitor(pathToStringVisitor(), path);
}
void Interpreter::operator()(const commit_&) const
{
m_datastore.commitChanges();
}
void Interpreter::operator()(const discard_&) const
{
m_datastore.discardChanges();
}
void Interpreter::operator()(const set_& set) const
{
auto data = set.m_data;
// If the user didn't supply a module prefix for identityref, we need to add it ourselves
if (data.type() == typeid(identityRef_)) {
auto identityRef = boost::get<identityRef_>(data);
if (!identityRef.m_prefix) {
identityRef.m_prefix = set.m_path.m_nodes.front().m_prefix.value();
data = identityRef;
}
}
m_datastore.setLeaf(pathToString(toCanonicalPath(set.m_path)), data);
}
void Interpreter::operator()(const get_& get) const
{
auto targetSwitcher = make_unique_resource([] {}, [this, oldTarget = m_datastore.target()] {
m_datastore.setTarget(oldTarget);
});
if (get.m_dsTarget) {
m_datastore.setTarget(*get.m_dsTarget);
}
auto items = m_datastore.getItems(pathToString(toCanonicalPath(get.m_path)));
printTree(items);
}
void Interpreter::operator()(const cd_& cd) const
{
if (auto rpcInputPath = m_datastore.inputDatastorePath(); rpcInputPath && !pathToDataString(cd.m_path, Prefixes::WhenNeeded).starts_with(m_parser.currentNode())) {
throw std::runtime_error("Can't cd out of `prepare` context");
}
m_parser.changeNode(cd.m_path);
}
void Interpreter::operator()(const create_& create) const
{
m_datastore.createItem(pathToString(toCanonicalPath(create.m_path)));
}
void Interpreter::operator()(const delete_& delet) const
{
m_datastore.deleteItem(pathToString(toCanonicalPath(delet.m_path)));
}
void Interpreter::operator()(const ls_& ls) const
{
std::cout << "Possible nodes:" << std::endl;
auto recursion{Recursion::NonRecursive};
for (auto it : ls.m_options) {
if (it == LsOption::Recursive) {
recursion = Recursion::Recursive;
}
}
auto toPrint = m_datastore.schema()->availableNodes(toCanonicalPath(ls.m_path), recursion);
for (const auto& it : toPrint) {
std::cout << (it.first ? *it.first + ":" : "") + it.second << std::endl;
}
}
void Interpreter::operator()(const copy_& copy) const
{
m_datastore.copyConfig(copy.m_source, copy.m_destination);
}
std::string Interpreter::buildTypeInfo(const std::string& path) const
{
std::ostringstream ss;
std::string typeDescription;
switch (m_datastore.schema()->nodeType(path)) {
case yang::NodeTypes::Container:
ss << "container";
break;
case yang::NodeTypes::PresenceContainer:
ss << "presence container";
break;
case yang::NodeTypes::Leaf: {
auto leafType = m_datastore.schema()->leafType(path);
auto typedefName = m_datastore.schema()->leafTypeName(path);
std::string baseTypeStr;
if (std::holds_alternative<yang::LeafRef>(leafType.m_type)) {
ss << "-> ";
ss << m_datastore.schema()->leafrefPath(path) << " ";
baseTypeStr = leafDataTypeToString(std::get<yang::LeafRef>(leafType.m_type).m_targetType->m_type);
} else {
baseTypeStr = leafDataTypeToString(leafType.m_type);
}
if (typedefName) {
ss << *typedefName << " (" << baseTypeStr << ")";
} else {
ss << baseTypeStr;
}
if (leafType.m_units) {
ss << " [" + *leafType.m_units + "]";
}
if (leafType.m_description) {
typeDescription = "\nType description: " + *leafType.m_description;
}
if (m_datastore.schema()->leafIsKey(path)) {
ss << " (key)";
}
if (auto defaultValue = m_datastore.schema()->defaultValue(path)) {
ss << " default: " << leafDataToString(*defaultValue);
}
break;
}
case yang::NodeTypes::List:
ss << "list";
break;
case yang::NodeTypes::Rpc:
ss << "RPC";
break;
case yang::NodeTypes::LeafList:
ss << "leaf-list";
break;
case yang::NodeTypes::Action:
ss << "action";
break;
case yang::NodeTypes::AnyXml:
throw std::logic_error("Sorry, anyxml isn't supported yet.");
case yang::NodeTypes::Notification:
throw std::logic_error("Sorry, notifications aren't supported yet.");
}
if (!m_datastore.schema()->isConfig(path)) {
ss << " (ro)\n";
}
auto status = m_datastore.schema()->status(path);
auto statusStr = status == yang::Status::Deprecated ? " (deprecated)" :
status == yang::Status::Obsolete ? " (obsolete)" :
"";
ss << statusStr;
if (auto description = m_datastore.schema()->description(path)) {
ss << std::endl << *description << std::endl;
}
ss << typeDescription;
return ss.str();
}
void Interpreter::operator()(const describe_& describe) const
{
auto fullPath = pathToString(toCanonicalPath(describe.m_path));
std::cout << pathToString(describe.m_path) << ": " << buildTypeInfo(fullPath) << std::endl;
}
void Interpreter::operator()(const move_& move) const
{
m_datastore.moveItem(pathToDataString(move.m_source, Prefixes::WhenNeeded), move.m_destination);
}
void Interpreter::operator()(const dump_& dump) const
{
std::cout << m_datastore.dump(dump.m_format) << "\n";
}
void Interpreter::operator()(const prepare_& prepare) const
{
m_datastore.initiate(pathToString(toCanonicalPath(prepare.m_path)));
m_parser.changeNode(prepare.m_path);
}
void Interpreter::operator()(const exec_& exec) const
{
m_parser.changeNode({Scope::Absolute, {}});
if (exec.m_path) {
m_datastore.initiate(pathToString(toCanonicalPath(*exec.m_path)));
}
auto output = m_datastore.execute();
std::cout << "RPC/action output:\n";
printTree(output);
}
void Interpreter::operator()(const cancel_&) const
{
m_parser.changeNode({Scope::Absolute, {}});
m_datastore.cancel();
}
void Interpreter::operator()(const switch_& switch_cmd) const
{
m_datastore.setTarget(switch_cmd.m_target);
}
struct commandLongHelpVisitor : boost::static_visitor<const char*> {
template <typename T>
auto constexpr operator()(boost::type<T>) const
{
return T::longHelp;
}
};
struct commandShortHelpVisitor : boost::static_visitor<const char*> {
template <typename T>
auto constexpr operator()(boost::type<T>) const
{
return T::shortHelp;
}
};
void Interpreter::operator()(const help_& help) const
{
if (help.m_cmd) {
std::cout << boost::apply_visitor(commandLongHelpVisitor(), help.m_cmd.get()) << std::endl;
} else {
boost::mpl::for_each<CommandTypes, boost::type<boost::mpl::_>>([](auto cmd) {
std::cout << commandShortHelpVisitor()(cmd) << std::endl;
});
}
}
void Interpreter::operator()(const quit_&) const
{
// no operation
}
template <typename PathType>
boost::variant<dataPath_, schemaPath_, module_> Interpreter::toCanonicalPath(const boost::optional<PathType>& optPath) const
{
if (!optPath) {
return m_parser.currentPath();
}
return toCanonicalPath(*optPath);
}
struct impl_toCanonicalPath {
const dataPath_& m_parserPath;
using ReturnType = boost::variant<dataPath_, schemaPath_, module_>;
impl_toCanonicalPath(const dataPath_& parserPath)
: m_parserPath(parserPath)
{
}
ReturnType operator()(const module_& path) const
{
return path;
}
ReturnType operator()(const schemaPath_& path) const
{
return impl(path);
}
ReturnType operator()(const dataPath_& path) const
{
return impl(path);
}
private:
template <typename PathType>
[[nodiscard]] ReturnType impl(const PathType& suffix) const
{
PathType res = [this] {
if constexpr (std::is_same<PathType, schemaPath_>()) {
return dataPathToSchemaPath(m_parserPath);
} else {
return m_parserPath;
}
}();
if (suffix.m_scope == Scope::Absolute) {
res = {Scope::Absolute, {}};
}
for (const auto& fragment : suffix.m_nodes) {
res.pushFragment(fragment);
}
return res;
}
};
template <typename PathType>
boost::variant<dataPath_, schemaPath_, module_> Interpreter::toCanonicalPath(const PathType& path) const
{
if constexpr (std::is_same<PathType, dataPath_>()) {
return impl_toCanonicalPath(m_parser.currentPath())(path);
} else {
return boost::apply_visitor(impl_toCanonicalPath(m_parser.currentPath()), path);
}
}
Interpreter::Interpreter(Parser& parser, ProxyDatastore& datastore)
: m_parser(parser)
, m_datastore(datastore)
{
}