sapling/eden/fs/store/BackingStore.h
Chad Austin 8b9261f2a1 run clang-format across all C++ files
Summary:
Per discussion with bolinfest, this brings Eden in line with clang-format.

This diff was generated with `find . \( -iname '*.cpp' -o -iname '*.h' \) -exec bash -c "yes | arc lint {}" \;`

Reviewed By: bolinfest

Differential Revision: D6232695

fbshipit-source-id: d54942bf1c69b5b0dcd4df629f1f2d5538c9e28c
2017-11-03 16:02:03 -07:00

52 lines
1.3 KiB
C++

/*
* Copyright (c) 2016-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
#pragma once
#include <memory>
namespace folly {
template <typename T>
class Future;
}
namespace facebook {
namespace eden {
class Blob;
class Hash;
class Tree;
/**
* Abstract interface for a BackingStore.
*
* A BackingStore fetches tree and blob information from an external
* authoritative data source.
*
* BackingStore implementations must be thread-safe, and perform their own
* internal locking.
*/
class BackingStore {
public:
BackingStore() {}
virtual ~BackingStore() {}
virtual folly::Future<std::unique_ptr<Tree>> getTree(const Hash& id) = 0;
virtual folly::Future<std::unique_ptr<Blob>> getBlob(const Hash& id) = 0;
virtual folly::Future<std::unique_ptr<Tree>> getTreeForCommit(
const Hash& commitID) = 0;
private:
// Forbidden copy constructor and assignment operator
BackingStore(BackingStore const&) = delete;
BackingStore& operator=(BackingStore const&) = delete;
};
} // namespace eden
} // namespace facebook