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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "messages.h"
#include <vespa/storageapi/message/persistence.h>
#include <vespa/storageapi/message/removelocation.h>
namespace document { class BucketIdFactory; }
namespace vespalib { class ISequencedTaskExecutor; }
namespace storage {
namespace spi {
struct PersistenceProvider;
class Context;
}
class PersistenceUtil;
class BucketOwnershipNotifier;
class MessageTracker;
/**
* Handle async operations that uses a sequenced executor.
* It is stateless and thread safe.
*/
class AsyncHandler {
using MessageTrackerUP = std::unique_ptr<MessageTracker>;
public:
AsyncHandler(const PersistenceUtil&, spi::PersistenceProvider&, BucketOwnershipNotifier&,
vespalib::ISequencedTaskExecutor& executor, const document::BucketIdFactory& bucketIdFactory);
MessageTrackerUP handlePut(api::PutCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleRemove(api::RemoveCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleUpdate(api::UpdateCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleRunTask(RunTaskCommand & cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleSetBucketState(api::SetBucketStateCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handle_delete_bucket_throttling(api::DeleteBucketCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleCreateBucket(api::CreateBucketCommand& cmd, MessageTrackerUP tracker) const;
MessageTrackerUP handleRemoveLocation(api::RemoveLocationCommand& cmd, MessageTrackerUP tracker) const;
static bool is_async_unconditional_message(const api::StorageMessage& cmd) noexcept;
private:
[[nodiscard]] bool checkProviderBucketInfoMatches(const spi::Bucket&, const api::BucketInfo&) const;
static bool tasConditionExists(const api::TestAndSetCommand& cmd);
bool tasConditionMatches(const api::TestAndSetCommand& cmd, MessageTracker& tracker,
spi::Context& context, bool missingDocumentImpliesMatch = false) const;
void on_delete_bucket_complete(const document::Bucket& bucket) const;
const PersistenceUtil & _env;
spi::PersistenceProvider & _spi;
BucketOwnershipNotifier & _bucketOwnershipNotifier;
vespalib::ISequencedTaskExecutor & _sequencedExecutor;
const document::BucketIdFactory & _bucketIdFactory;
};
} // storage
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