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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "attributecontext.h"
#include "attributevector.h"
#include "attribute_read_guard.h"
#include <vespa/vespalib/stllike/hash_map.hpp>
using namespace search::attribute;
namespace search {
const IAttributeVector *
AttributeContext::getAttribute(AttributeMap & map, const string & name, bool stableEnum) const
{
auto itr = map.find(name);
if (itr != map.end()) {
if (itr->second) {
return itr->second->attribute();
} else {
return nullptr;
}
} else {
auto readGuard = _manager.getAttributeReadGuard(name, stableEnum);
const IAttributeVector *attribute = nullptr;
if (readGuard) {
attribute = readGuard->attribute();
}
map[name] = std::move(readGuard);
return attribute;
}
}
const IAttributeVector *
AttributeContext::getAttributeMtSafe(AttributeMap &map, const string &name, bool stableEnum) const {
std::lock_guard<std::mutex> guard(_cacheLock);
return getAttribute(map, name, stableEnum);
}
AttributeContext::AttributeContext(const IAttributeManager & manager)
: _manager(manager),
_mtSafe(false),
_attributes(),
_enumAttributes(),
_cacheLock()
{ }
AttributeContext::~AttributeContext() = default;
const IAttributeVector *
AttributeContext::getAttribute(const string & name) const
{
return _mtSafe
? getAttributeMtSafe(_attributes, name, false)
: getAttribute(_attributes, name, false);
}
const IAttributeVector *
AttributeContext::getAttributeStableEnum(const string & name) const
{
return _mtSafe
? getAttributeMtSafe(_enumAttributes, name, true)
: getAttribute(_enumAttributes, name, true);
}
void AttributeContext::releaseEnumGuards() {
if (_mtSafe) {
std::lock_guard<std::mutex> guard(_cacheLock);
_enumAttributes.clear();
} else {
_enumAttributes.clear();
}
}
void
AttributeContext::getAttributeList(std::vector<const IAttributeVector *> & list) const
{
std::vector<AttributeGuard> attributes;
_manager.getAttributeList(attributes);
for (size_t i = 0; i < attributes.size(); ++i) {
list.push_back(getAttribute(attributes[i]->getName()));
}
}
void
AttributeContext::asyncForAttribute(const vespalib::string &name, std::unique_ptr<IAttributeFunctor> func) const {
_manager.asyncForAttribute(name, std::move(func));
}
} // namespace search
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