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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "document_db_reference_resolver.h"
#include "gid_to_lid_change_listener.h"
#include "gid_to_lid_change_registrator.h"
#include "i_document_db_reference.h"
#include "i_document_db_reference_registry.h"
#include <vespa/searchcore/proton/attribute/imported_attributes_repo.h>
#include <vespa/searchcommon/attribute/iattributevector.h>
#include <vespa/searchlib/attribute/iattributemanager.h>
#include <vespa/searchlib/attribute/imported_attribute_vector.h>
#include <vespa/searchlib/attribute/imported_attribute_vector_factory.h>
#include <vespa/searchlib/attribute/reference_attribute.h>
#include <vespa/config-imported-fields.h>
#include <vespa/document/datatype/documenttype.h>
#include <vespa/document/datatype/referencedatatype.h>
using document::DataType;
using document::DocumentType;
using document::DocumentTypeRepo;
using document::ReferenceDataType;
using search::attribute::BasicType;
using search::attribute::Config;
using search::attribute::IAttributeVector;
using search::attribute::ImportedAttributeVectorFactory;
using search::attribute::ReferenceAttribute;
using search::AttributeGuard;
using search::AttributeVector;
using search::IAttributeManager;
using search::NotImplementedAttribute;
using vespalib::ISequencedTaskExecutor;
using vespalib::MonitoredRefCount;
using vespalib::RetainGuard;
using vespa::config::search::ImportedFieldsConfig;
namespace proton {
namespace {
vespalib::string
getTargetDocTypeName(const vespalib::string &attrName,
const DocumentType &thisDocType)
{
const DataType &attrType = thisDocType.getField(attrName).getDataType();
const ReferenceDataType *refType = dynamic_cast<const ReferenceDataType *>(&attrType);
assert(refType != nullptr);
return refType->getTargetType().getName();
}
ReferenceAttribute::SP
getReferenceAttribute(const vespalib::string &name, const IAttributeManager &attrMgr)
{
AttributeGuard::UP guard = attrMgr.getAttribute(name);
assert(guard.get());
assert(guard->get()->getBasicType() == BasicType::REFERENCE);
return std::dynamic_pointer_cast<ReferenceAttribute>(guard->getSP());
}
std::vector<ReferenceAttribute::SP>
getReferenceAttributes(const IAttributeManager &attrMgr)
{
std::vector<ReferenceAttribute::SP> result;
std::vector<AttributeGuard> attributeList;
attrMgr.getAttributeList(attributeList);
for (auto &guard : attributeList) {
AttributeVector &attr = *guard;
if (attr.getBasicType() == BasicType::REFERENCE) {
auto refAttr = std::dynamic_pointer_cast<ReferenceAttribute>(guard.getSP());
assert(refAttr);
result.push_back(std::move(refAttr));
}
}
return result;
}
}
GidToLidChangeRegistrator &
DocumentDBReferenceResolver::getRegistrator(const vespalib::string &docTypeName)
{
auto &result = _registrators[docTypeName];
if (!result) {
result = _registry.get(docTypeName)->makeGidToLidChangeRegistrator(_thisDocType.getName());
}
return *result;
}
IDocumentDBReference::SP
DocumentDBReferenceResolver::getTargetDocumentDB(const vespalib::string &refAttrName) const
{
return _registry.get(getTargetDocTypeName(refAttrName, _thisDocType));
}
void
DocumentDBReferenceResolver::connectReferenceAttributesToGidMapper(const IAttributeManager &attrMgr)
{
auto refAttrs(getReferenceAttributes(attrMgr));
for (auto &attrSP : refAttrs) {
auto &attr = *attrSP;
IDocumentDBReference::SP targetDB = getTargetDocumentDB(attr.getName());
attr.setGidToLidMapperFactory(targetDB->getGidToLidMapperFactory());
}
}
void
DocumentDBReferenceResolver::detectOldListeners(const IAttributeManager &attrMgr)
{
auto refAttrs(getReferenceAttributes(attrMgr));
for (auto &attrSP : refAttrs) {
vespalib::string docTypeName = getTargetDocTypeName(attrSP->getName(), _prevThisDocType);
auto ®istratorUP = _registrators[docTypeName];
if (!registratorUP) {
auto reference = _registry.tryGet(docTypeName);
if (reference) {
registratorUP = reference->makeGidToLidChangeRegistrator(_thisDocType.getName());
}
}
}
}
void
DocumentDBReferenceResolver::listenToGidToLidChanges(const IAttributeManager &attrMgr)
{
auto refAttrs(getReferenceAttributes(attrMgr));
for (auto &attrSP : refAttrs) {
auto &attr = *attrSP;
vespalib::string docTypeName = getTargetDocTypeName(attr.getName(), _thisDocType);
GidToLidChangeRegistrator ®istrator = getRegistrator(docTypeName);
auto listener = std::make_unique<GidToLidChangeListener>(_attributeFieldWriter, attrSP,
RetainGuard(_refCount),
attr.getName(), _thisDocType.getName());
registrator.addListener(std::move(listener));
}
}
ImportedAttributesRepo::UP
DocumentDBReferenceResolver::createImportedAttributesRepo(const IAttributeManager &attrMgr,
const std::shared_ptr<search::IDocumentMetaStoreContext> &documentMetaStore,
bool useSearchCache)
{
auto result = std::make_unique<ImportedAttributesRepo>();
if (_useReferences) {
for (const auto &attr : _importedFieldsCfg.attribute) {
ReferenceAttribute::SP refAttr = getReferenceAttribute(attr.referencefield, attrMgr);
auto targetDocumentDB = getTargetDocumentDB(refAttr->getName());
auto targetAttr = targetDocumentDB->getAttribute(attr.targetfield);
if (targetAttr) {
auto targetDocumentMetaStore = targetDocumentDB->getDocumentMetaStore();
auto importedAttr = ImportedAttributeVectorFactory::create(attr.name, refAttr, documentMetaStore, targetAttr, targetDocumentMetaStore, useSearchCache);
result->add(importedAttr->getName(), importedAttr);
}
}
}
return result;
}
DocumentDBReferenceResolver::DocumentDBReferenceResolver(const IDocumentDBReferenceRegistry ®istry,
const DocumentType &thisDocType,
const ImportedFieldsConfig &importedFieldsCfg,
const document::DocumentType &prevThisDocType,
MonitoredRefCount &refCount,
ISequencedTaskExecutor &attributeFieldWriter,
bool useReferences)
: _registry(registry),
_thisDocType(thisDocType),
_importedFieldsCfg(importedFieldsCfg),
_prevThisDocType(prevThisDocType),
_refCount(refCount),
_attributeFieldWriter(attributeFieldWriter),
_useReferences(useReferences),
_registrators()
{
}
DocumentDBReferenceResolver::~DocumentDBReferenceResolver() = default;
ImportedAttributesRepo::UP
DocumentDBReferenceResolver::resolve(const IAttributeManager &newAttrMgr,
const IAttributeManager &oldAttrMgr,
const std::shared_ptr<search::IDocumentMetaStoreContext> &documentMetaStore,
vespalib::duration visibilityDelay)
{
detectOldListeners(oldAttrMgr);
if (_useReferences) {
connectReferenceAttributesToGidMapper(newAttrMgr);
listenToGidToLidChanges(newAttrMgr);
}
return createImportedAttributesRepo(newAttrMgr, documentMetaStore, (visibilityDelay > vespalib::duration::zero()));
}
void
DocumentDBReferenceResolver::teardown(const IAttributeManager &oldAttrMgr)
{
detectOldListeners(oldAttrMgr);
}
}
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