rocksdb/utilities/blob_db/blob_db_listener.h
mrambacher 3aee4fbd41 Make EventListener into a Customizable Class (#8473)
Summary:
- Added Type/CreateFromString
- Added ability to load EventListeners to DBOptions
- Since EventListeners did not previously have a Name(), defaulted to "".  If there is no name, the listener cannot be loaded from the ObjectRegistry.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8473

Reviewed By: zhichao-cao

Differential Revision: D29901488

Pulled By: mrambacher

fbshipit-source-id: 2d3a4aa6db1562ac03e7ad41b360e3521d486254
2021-07-27 07:47:02 -07:00

72 lines
2.0 KiB
C++

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#pragma once
#ifndef ROCKSDB_LITE
#include <atomic>
#include "rocksdb/listener.h"
#include "util/mutexlock.h"
#include "utilities/blob_db/blob_db_impl.h"
namespace ROCKSDB_NAMESPACE {
namespace blob_db {
class BlobDBListener : public EventListener {
public:
explicit BlobDBListener(BlobDBImpl* blob_db_impl)
: blob_db_impl_(blob_db_impl) {}
void OnFlushBegin(DB* /*db*/, const FlushJobInfo& /*info*/) override {
assert(blob_db_impl_ != nullptr);
blob_db_impl_->SyncBlobFiles();
}
void OnFlushCompleted(DB* /*db*/, const FlushJobInfo& /*info*/) override {
assert(blob_db_impl_ != nullptr);
blob_db_impl_->UpdateLiveSSTSize();
}
void OnCompactionCompleted(DB* /*db*/,
const CompactionJobInfo& /*info*/) override {
assert(blob_db_impl_ != nullptr);
blob_db_impl_->UpdateLiveSSTSize();
}
const char* Name() const override { return kClassName(); }
static const char* kClassName() { return "BlobDBListener"; }
protected:
BlobDBImpl* blob_db_impl_;
};
class BlobDBListenerGC : public BlobDBListener {
public:
explicit BlobDBListenerGC(BlobDBImpl* blob_db_impl)
: BlobDBListener(blob_db_impl) {}
const char* Name() const override { return kClassName(); }
static const char* kClassName() { return "BlobDBListenerGC"; }
void OnFlushCompleted(DB* db, const FlushJobInfo& info) override {
BlobDBListener::OnFlushCompleted(db, info);
assert(blob_db_impl_);
blob_db_impl_->ProcessFlushJobInfo(info);
}
void OnCompactionCompleted(DB* db, const CompactionJobInfo& info) override {
BlobDBListener::OnCompactionCompleted(db, info);
assert(blob_db_impl_);
blob_db_impl_->ProcessCompactionJobInfo(info);
}
};
} // namespace blob_db
} // namespace ROCKSDB_NAMESPACE
#endif // !ROCKSDB_LITE