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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "fixedsourceselector.h"
#include <vespa/searchcommon/attribute/config.h>
#include <vespa/log/log.h>
LOG_SETUP(".searchlib.attribute.fixed_source_selector");
namespace search {
namespace {
attribute::Config getConfig() { return attribute::Config(attribute::BasicType::INT8); }
uint32_t
capSelector(queryeval::sourceselector::Iterator::SourceStore &store, queryeval::Source defaultSource)
{
uint32_t committedDocIdLimit = store.getCommittedDocIdLimit();
uint32_t cappedSources = 0;
for (uint32_t docId = 0; docId < committedDocIdLimit; ++docId) {
queryeval::Source source = store.getFast(docId);
if (source > defaultSource) {
++cappedSources;
store.set(docId, defaultSource);
}
}
return cappedSources;
}
}
FixedSourceSelector::Iterator::Iterator(const FixedSourceSelector & sourceSelector) :
IIterator(sourceSelector._source),
_attributeGuard(sourceSelector._realSource)
{ }
FixedSourceSelector::FixedSourceSelector(queryeval::Source defaultSource,
const vespalib::string & attrBaseFileName,
uint32_t initialNumDocs) :
SourceSelector(defaultSource, std::make_shared<SourceStore>(attrBaseFileName, getConfig())),
_source(static_cast<SourceStore &>(*_realSource))
{
if (initialNumDocs != std::numeric_limits<uint32_t>::max()) {
reserve(initialNumDocs);
_source.commit();
}
}
FixedSourceSelector::~FixedSourceSelector() = default;
FixedSourceSelector::UP
FixedSourceSelector::cloneAndSubtract(const vespalib::string & attrBaseFileName, uint32_t diff)
{
queryeval::Source newDefault = getNewSource(getDefaultSource(), diff);
auto selector = std::make_unique< FixedSourceSelector>(newDefault, attrBaseFileName, _source.getNumDocs()-1);
for (uint32_t docId = 0; docId < _source.getNumDocs(); ++docId) {
queryeval::Source src = _source.get(docId);
src = getNewSource(src, diff);
assert(src < SOURCE_LIMIT);
selector->_source.set(docId, src);
}
selector->_source.commit();
selector->setBaseId(getBaseId() + diff);
selector->_source.setCommittedDocIdLimit(_source.getCommittedDocIdLimit());
return selector;
}
FixedSourceSelector::UP
FixedSourceSelector::load(const vespalib::string & baseFileName, uint32_t currentId)
{
LoadInfo::UP info = extractLoadInfo(baseFileName);
info->load();
uint32_t defaultSource = currentId - info->header()._baseId;
assert(defaultSource < SOURCE_LIMIT);
if (defaultSource != info->header()._defaultSource) {
LOG(info, "Default source mismatch: header says %u, should be %u selector %s",
(uint32_t) info->header()._defaultSource, defaultSource,
baseFileName.c_str());
}
auto selector = std::make_unique<FixedSourceSelector>(defaultSource,
info->header()._baseFileName,
std::numeric_limits<uint32_t>::max());
selector->setBaseId(info->header()._baseId);
selector->_source.load();
uint32_t cappedSources = capSelector(selector->_source, selector->getDefaultSource());
if (cappedSources > 0) {
LOG(warning, "%u sources capped in source selector %s", cappedSources, baseFileName.c_str());
}
return selector;
}
void FixedSourceSelector::reserve(uint32_t numDocs)
{
const uint32_t maxDoc(_source.getNumDocs());
const uint32_t newMaxDocIdPlussOne(numDocs + 1);
if (newMaxDocIdPlussOne > maxDoc) {
uint32_t newDocId(0);
for (_source.addDoc(newDocId); newDocId < numDocs; _source.addDoc(newDocId));
}
for (uint32_t i = _source.getCommittedDocIdLimit(); i < newMaxDocIdPlussOne; ++i) {
_source.set(i, getDefaultSource());
}
}
void
FixedSourceSelector::setSource(uint32_t docId, queryeval::Source source)
{
assert(source < SOURCE_LIMIT);
/**
* Due to matchingloop advancing 1 past end, we need to initialize data that
* far too.
**/
reserve(docId+1);
_source.update(docId, source);
_source.updateUncommittedDocIdLimit(docId + 1);
_source.commit();
}
void
FixedSourceSelector::compactLidSpace(uint32_t lidLimit)
{
if (lidLimit < _source.getCommittedDocIdLimit()) {
_source.compactLidSpace(lidLimit + 1);
}
}
} // namespace search
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