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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "dumpvisitor.h"
#include <vespa/documentapi/messagebus/messages/multioperationmessage.h>
#include <vespa/document/update/documentupdate.h>
#include <vespa/vdslib/container/mutabledocumentlist.h>
#include <vespa/vespalib/stllike/hash_map.hpp>
#include <vespa/log/log.h>
LOG_SETUP(".visitor.instance.dumpvisitor");
namespace storage {
DumpVisitor::DumpVisitor(StorageComponent& component,
const vdslib::Parameters& params)
: Visitor(component),
_keepTimeStamps(false)
{
if (params.hasValue("requestfields")) {
std::string fields = params.get("requestfields");
_requestedFields.reset(new std::set<std::string>());
vespalib::StringTokenizer tokenizer(fields);
for (uint32_t i = 0; i < tokenizer.size(); i++) {
_requestedFields->insert(tokenizer[i]);
}
}
if (params.hasValue("requestdocuments")) {
std::string documents = params.get("requestdocuments");
_requestedDocuments.reset(new std::set<std::string>());
vespalib::StringTokenizer tokenizer(documents, " \t");
for (uint32_t i = 0; i < tokenizer.size(); i++) {
_requestedDocuments->insert(tokenizer[i]);
}
}
if (params.hasValue("keeptimestamps")) {
_keepTimeStamps = true;
}
LOG(debug, "Created DumpVisitor");
}
std::unique_ptr<documentapi::MultiOperationMessage>
DumpVisitor::createMultiOperation(const document::BucketId& bucketId,
const std::vector<const document::Document*>& docs)
{
for (int multiplier = 1; ; multiplier *= 2) {
std::vector<char> buffer(getDocBlockSize() * multiplier);
vdslib::MutableDocumentList newBlock(_component.getTypeRepo(),
&buffer[0], buffer.size(), false);
bool mustResizeBuffer = false;
for (uint32_t i = 0; i < docs.size(); i++) {
bool ok = newBlock.addPut(*docs[i], docs[i]->getLastModified());
if (!ok) {
mustResizeBuffer = true;
break;
}
}
if (!mustResizeBuffer) {
return std::unique_ptr<documentapi::MultiOperationMessage>(
new documentapi::MultiOperationMessage(bucketId, newBlock, _keepTimeStamps));
}
}
assert(false);
return std::unique_ptr<documentapi::MultiOperationMessage>();
}
void DumpVisitor::handleDocuments(const document::BucketId& bucketId,
std::vector<spi::DocEntry::UP>& entries,
HitCounter& hitCounter)
{
LOG(debug, "Visitor %s handling block of %zu documents.",
_id.c_str(), entries.size());
std::unique_ptr<documentapi::MultiOperationMessage> cmd;
if (_requestedFields.get() || _requestedDocuments.get()) {
std::vector<const document::Document*> newDocuments;
// Remove all fields from the document that are not listed in
// requestedFields.
for (size_t i = 0; i < entries.size(); ++i) {
std::unique_ptr<document::Document> d(entries[i]->getDocument()->clone());
if (!_requestedDocuments.get()
|| _requestedDocuments->find(d->getId().toString())
!= _requestedDocuments->end())
{
if (_requestedFields.get()) {
for (document::Document::const_iterator docIter
= d->begin(); docIter != d->end(); ++docIter)
{
if (_requestedFields->find(docIter.field().getName())
== _requestedFields->end())
{
d->remove(docIter.field());
}
}
}
newDocuments.push_back(d.release());
}
}
cmd = createMultiOperation(bucketId, newDocuments);
// FIXME: not exception safe
for (uint32_t i = 0; i < newDocuments.size(); i++) {
delete newDocuments[i];
}
} else {
std::vector<const document::Document*> docs;
docs.reserve(entries.size());
for (size_t i = 0; i < entries.size(); ++i) {
docs.push_back(entries[i]->getDocument());
assert(docs.back() != 0);
}
cmd = createMultiOperation(bucketId, docs);
}
for (vdslib::DocumentList::const_iterator iter
= cmd->getOperations().begin();
iter != cmd->getOperations().end(); iter++)
{
hitCounter.addHit(iter->getDocumentId(), iter->getSerializedSize());
}
sendMessage(documentapi::DocumentMessage::UP(cmd.release()));
}
}
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