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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "recoveryvisitor.h"
#include <vespa/persistence/spi/docentry.h>
#include <vespa/vespalib/objects/nbostream.h>
#include <vespa/documentapi/messagebus/messages/visitor.h>
#include <vespa/document/fieldvalue/document.h>
#include <vespa/vespalib/text/stringtokenizer.h>
#include <vespa/vespalib/stllike/hash_map.hpp>
#include <vespa/log/log.h>
LOG_SETUP(".visitor.instance.recoveryvisitor");
namespace storage {
RecoveryVisitor::RecoveryVisitor(StorageComponent& component,
const vdslib::Parameters& params)
: Visitor(component)
{
if (params.hasValue("requestfields")) {
std::string fields = params.get("requestfields");
vespalib::StringTokenizer tokenizer(fields);
for (uint32_t i = 0; i < tokenizer.size(); i++) {
_requestedFields.insert(tokenizer[i]);
}
}
LOG(debug, "Created RecoveryVisitor with %d requested fields", (int)_requestedFields.size());
}
void
RecoveryVisitor::handleDocuments(const document::BucketId& bid,
DocEntryList & entries,
HitCounter& hitCounter)
{
std::lock_guard guard(_mutex);
LOG(debug, "Visitor %s handling block of %zu documents.", _id.c_str(), entries.size());
documentapi::DocumentListMessage* cmd = nullptr;
{
CommandMap::iterator iter = _activeCommands.find(bid);
if (iter == _activeCommands.end()) {
CommandPtr ptr(new documentapi::DocumentListMessage(bid));
cmd = ptr.get();
_activeCommands[bid] = std::move(ptr);
} else {
cmd = iter->second.get();
}
}
// Remove all fields from the document that are not listed in requestedFields.
for (size_t i = 0; i < entries.size(); ++i) {
const spi::DocEntry& entry(*entries[i]);
std::unique_ptr<document::Document> doc(entry.getDocument()->clone());
if (_requestedFields.empty()) {
doc->clear();
} else {
for (document::Document::const_iterator docIter = doc->begin();
docIter != doc->end();
++docIter) {
if (_requestedFields.find(docIter.field().getName())
== _requestedFields.end())
{
doc->remove(docIter.field());
}
}
}
hitCounter.addHit(doc->getId(), doc->serialize().size());
int64_t timestamp = doc->getLastModified();
cmd->getDocuments().push_back(documentapi::DocumentListMessage::Entry(
timestamp,
document::Document::SP(doc.release()),
entry.isRemove()));
}
}
void RecoveryVisitor::completedBucket(const document::BucketId& bid, HitCounter&)
{
documentapi::DocumentMessage::UP _msgToSend;
LOG(debug, "Finished bucket %s", bid.toString().c_str());
{
std::lock_guard guard(_mutex);
CommandMap::iterator iter = _activeCommands.find(bid);
if (iter != _activeCommands.end()) {
_msgToSend.reset(iter->second.release());
_activeCommands.erase(iter);
}
}
if (_msgToSend.get()) {
sendMessage(std::move(_msgToSend));
}
}
}
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