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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "bucketdbhandler.h"
#include "splitbucketsession.h"
#include "joinbucketssession.h"
#include <vespa/searchcore/proton/documentmetastore/i_document_meta_store.h>
#include <algorithm>
namespace proton::bucketdb {
BucketDBHandler::BucketDBHandler(BucketDBOwner &bucketDB)
: _bucketDB(bucketDB),
_dmsv(),
_bucketCreateNotifier()
{
}
BucketDBHandler::~BucketDBHandler() = default;
void
BucketDBHandler::addDocumentMetaStore(IDocumentMetaStore *dms, search::SerialNum flushedSerialNum)
{
_dmsv.push_back(MetaStoreDesc(dms, flushedSerialNum));
}
void
BucketDBHandler::handleSplit(search::SerialNum serialNum, const BucketId &source,
const BucketId &target1, const BucketId &target2)
{
// Called by writer thread
assert(source.valid());
assert(target1.valid() || target2.valid());
if (target1.valid()) {
assert(source.getUsedBits() < target1.getUsedBits());
assert(source.contains(target1));
}
if (target2.valid()) {
assert(source.getUsedBits() < target2.getUsedBits());
assert(source.contains(target2));
}
if (target1.valid() && target2.valid()) {
assert(target1 != target2);
assert(!target1.contains(target2));
assert(!target2.contains(target1));
}
SplitBucketSession session(_bucketDB, _bucketCreateNotifier, source, target1, target2);
session.setup();
for (auto &desc : _dmsv) {
IDocumentMetaStore *dms = desc._dms;
if (serialNum > desc._flushedSerialNum) {
BucketDeltaPair deltas = dms->handleSplit(session);
session.applyDeltas(deltas);
dms->commit(search::CommitParam(serialNum));
}
}
session.finish();
}
void
BucketDBHandler::handleJoin(search::SerialNum serialNum, const BucketId &source1,
const BucketId &source2, const BucketId &target)
{
// Called by writer thread
JoinBucketsSession session(_bucketDB, _bucketCreateNotifier, source1, source2, target);
session.setup();
for (auto &desc : _dmsv) {
IDocumentMetaStore *dms = desc._dms;
if (serialNum > desc._flushedSerialNum) {
BucketDeltaPair deltas = dms->handleJoin(session);
session.applyDeltas(deltas);
dms->commit(search::CommitParam(serialNum));
}
}
session.finish();
}
void
BucketDBHandler::handleCreateBucket(const BucketId &bucketId)
{
_bucketDB.takeGuard()->createBucket(bucketId);
}
void
BucketDBHandler::handleDeleteBucket(const BucketId &bucketId)
{
_bucketDB.takeGuard()->deleteEmptyBucket(bucketId);
}
}
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