ceph/src/rocksdb/java/rocksjni/wal_filter_jnicallback.h

   1 //  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5 //
   6 // This file implements the callback "bridge" between Java and C++ for
   7 // ROCKSDB_NAMESPACE::WalFilter.
   8
   9 #ifndef JAVA_ROCKSJNI_WAL_FILTER_JNICALLBACK_H_
  10 #define JAVA_ROCKSJNI_WAL_FILTER_JNICALLBACK_H_
  11
  12 #include <jni.h>
  13 #include <map>
  14 #include <memory>
  15 #include <string>
  16
  17 #include "rocksdb/wal_filter.h"
  18 #include "rocksjni/jnicallback.h"
  19
  20 namespace ROCKSDB_NAMESPACE {
  21
  22 class WalFilterJniCallback : public JniCallback, public WalFilter {
  23  public:
  24     WalFilterJniCallback(
  25         JNIEnv* env, jobject jwal_filter);
  26     virtual void ColumnFamilyLogNumberMap(
  27         const std::map<uint32_t, uint64_t>& cf_lognumber_map,
  28         const std::map<std::string, uint32_t>& cf_name_id_map);
  29     virtual WalFilter::WalProcessingOption LogRecordFound(
  30         unsigned long long log_number, const std::string& log_file_name,
  31         const WriteBatch& batch, WriteBatch* new_batch, bool* batch_changed);
  32     virtual const char* Name() const;
  33
  34  private:
  35     std::unique_ptr<const char[]> m_name;
  36     jmethodID m_column_family_log_number_map_mid;
  37     jmethodID m_log_record_found_proxy_mid;
  38 };
  39
  40 }  // namespace ROCKSDB_NAMESPACE
  41
  42 #endif  // JAVA_ROCKSJNI_WAL_FILTER_JNICALLBACK_H_