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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "types.h"
#include <vespa/storageapi/message/bucketsplitting.h>
namespace storage {
namespace spi { struct PersistenceProvider; }
class PersistenceUtil;
class BucketOwnershipNotifier;
class RecheckBucketInfoCommand;
/**
* Handle operations that might changes bucket ownership.
* It is stateless and thread safe.
*/
class SplitJoinHandler : public Types {
public:
SplitJoinHandler(PersistenceUtil &, spi::PersistenceProvider &,
BucketOwnershipNotifier &, bool enableMultibitSplitOptimalization);
MessageTrackerUP handleSplitBucket(api::SplitBucketCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleRecheckBucketInfo(RecheckBucketInfoCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleJoinBuckets(api::JoinBucketsCommand& cmd, MessageTrackerUP tracker) const;
private:
/**
* Sanity-checking of join command parameters. Invokes tracker.fail() with
* an appropriate error and returns false iff the command does not validate
* OK. Returns true and does not touch the tracker otherwise.
*/
static bool validateJoinCommand(const api::JoinBucketsCommand& cmd, MessageTracker& tracker);
PersistenceUtil &_env;
spi::PersistenceProvider &_spi;
BucketOwnershipNotifier &_bucketOwnershipNotifier;
bool _enableMultibitSplitOptimalization;
};
} // storage
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