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// Copyright 2017 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/fastos/fastos.h>
#include "imported_attributes_context.h"
#include "imported_attributes_repo.h"
#include <vespa/searchlib/attribute/attributeguard.h>
#include <vespa/searchlib/attribute/imported_attribute_vector.h>
#include <vespa/vespalib/stllike/hash_map.hpp>
using search::attribute::IAttributeVector;
using search::attribute::ImportedAttributeVector;
using LockGuard = std::lock_guard<std::mutex>;
namespace proton {
ImportedAttributesContext::GuardedAttribute::GuardedAttribute(ImportedAttributeVector::SP attr,
bool stableEnumGuard)
: _attr(std::move(attr)),
_guard(stableEnumGuard ? _attr->acquireEnumGuard() : _attr->acquireGuard())
{
}
ImportedAttributesContext::GuardedAttribute::~GuardedAttribute()
{
}
const IAttributeVector *
ImportedAttributesContext::GuardedAttribute::get() const
{
return _attr.get();
}
const IAttributeVector *
ImportedAttributesContext::getOrCacheAttribute(const vespalib::string &name,
AttributeCache &attributes,
bool stableEnumGuard,
const LockGuard &) const
{
auto itr = attributes.find(name);
if (itr != attributes.end()) {
return itr->second.get();
}
ImportedAttributeVector::SP result = _repo.get(name);
if (result.get() != nullptr) {
attributes.emplace(name, GuardedAttribute(result, stableEnumGuard));
return result.get();
} else {
return nullptr;
}
}
ImportedAttributesContext::ImportedAttributesContext(const ImportedAttributesRepo &repo)
: _repo(repo),
_guardedAttributes(),
_enumGuardedAttributes(),
_cacheMutex()
{
}
ImportedAttributesContext::~ImportedAttributesContext()
{
}
const IAttributeVector *
ImportedAttributesContext::getAttribute(const vespalib::string &name) const
{
LockGuard guard(_cacheMutex);
return getOrCacheAttribute(name, _guardedAttributes, false, guard);
}
const IAttributeVector *
ImportedAttributesContext::getAttributeStableEnum(const vespalib::string &name) const
{
LockGuard guard(_cacheMutex);
return getOrCacheAttribute(name, _enumGuardedAttributes, true, guard);
}
void
ImportedAttributesContext::getAttributeList(std::vector<const IAttributeVector *> &list) const
{
std::vector<ImportedAttributeVector::SP> attributes;
_repo.getAll(attributes);
for (const auto &attr : attributes) {
list.push_back(getAttribute(attr->getName()));
}
}
void
ImportedAttributesContext::releaseEnumGuards()
{
LockGuard guard(_cacheMutex);
_enumGuardedAttributes.clear();
}
}
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