Removed Berkeley DB and db switching logic

1 files changed, 0 insertions, 452 deletions

diff --git a/src/blockchain_db/berkeleydb/db_bdb.h b/src/blockchain_db/berkeleydb/db_bdb.h
deleted file mode 100644
index 3ae90efe1..000000000
--- a/src/blockchain_db/berkeleydb/db_bdb.h
+++ /dev/null
@@ -1,452 +0,0 @@
-// Copyright (c) 2014-2019, The Monero Project
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without modification, are
-// permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this list of
-//    conditions and the following disclaimer.
-//
-// 2. Redistributions in binary form must reproduce the above copyright notice, this list
-//    of conditions and the following disclaimer in the documentation and/or other
-//    materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors may be
-//    used to endorse or promote products derived from this software without specific
-//    prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
-// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
-// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
-// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <db_cxx.h>
-
-#include "blockchain_db/blockchain_db.h"
-#include "cryptonote_basic/blobdatatype.h" // for type blobdata
-
-#include <unordered_map>
-#include <condition_variable>
-
-// ND: Enables multi-threaded bulk reads for when getting indices.
-//     TODO: Disabled for now, as it doesn't seem to provide noticeable improvements (??. Reason: TBD.
-// #define BDB_BULK_CAN_THREAD
-namespace cryptonote
-{
-
-struct bdb_txn_safe
-{
-  bdb_txn_safe() : m_txn(NULL) { }
-  ~bdb_txn_safe()
-  {
-    LOG_PRINT_L3("bdb_txn_safe: destructor");
-
-    if (m_txn != NULL)
-      abort();
-  }
-
-  void commit(std::string message = "")
-  {
-    if (message.size() == 0)
-    {
-      message = "Failed to commit a transaction to the db";
-    }
-
-    if (m_txn->commit(0))
-    {
-      m_txn = NULL;
-      LOG_PRINT_L0(message);
-      throw DB_ERROR(message.c_str());
-    }
-    m_txn = NULL;
-  }
-
-  void abort()
-  {
-    LOG_PRINT_L3("bdb_txn_safe: abort()");
-    if(m_txn != NULL)
-    {
-      m_txn->abort();
-      m_txn = NULL;
-    }
-    else
-    {
-      LOG_PRINT_L0("WARNING: bdb_txn_safe: abort() called, but m_txn is NULL");
-    }
-  }
-
-  operator DbTxn*()
-  {
-    return m_txn;
-  }
-
-  operator DbTxn**()
-  {
-    return &m_txn;
-  }
-private:
-  DbTxn* m_txn;
-};
-
-// ND: Class to handle buffer management when doing bulk queries
-// (DB_MULTIPLE). Allocates buffers then handles thread queuing
-// so a fixed set of buffers can be used (instead of allocating
-// every time a bulk query is needed).
-template <typename T>
-class bdb_safe_buffer
-{
-  // limit the number of buffers to 8
-  const size_t MaxAllowedBuffers = 8;
-public:
-    bdb_safe_buffer(size_t num_buffers, size_t count)
-    {
-      if(num_buffers > MaxAllowedBuffers)
-        num_buffers = MaxAllowedBuffers;
-
-      set_count(num_buffers);
-      for (size_t i = 0; i < num_buffers; i++)
-        m_buffers.push_back((T) malloc(sizeof(T) * count));
-      m_buffer_count = count;
-    }
-
-    ~bdb_safe_buffer()
-    {
-        for (size_t i = 0; i < m_buffers.size(); i++)
-        {
-            if (m_buffers[i])
-            {
-                free(m_buffers[i]);
-                m_buffers[i] = nullptr;
-            }
-        }
-
-        m_buffers.resize(0);
-    }
-
-    T acquire_buffer()
-    {
-        boost::unique_lock<boost::mutex> lock(m_lock);
-        m_cv.wait(lock, [&]{ return m_count > 0; });
-
-        --m_count;
-        size_t index = -1;
-        for (size_t i = 0; i < m_open_slot.size(); i++)
-        {
-            if (m_open_slot[i])
-            {
-                m_open_slot[i] = false;
-                index = i;
-                break;
-            }
-        }
-
-        assert(index >= 0);
-
-        T buffer = m_buffers[index];
-        m_buffer_map.emplace(buffer, index);
-        return buffer;
-    }
-
-    void release_buffer(T buffer)
-    {
-        boost::unique_lock<boost::mutex> lock(m_lock);
-
-        assert(buffer != nullptr);
-        auto it = m_buffer_map.find(buffer);
-        if (it != m_buffer_map.end())
-        {
-            auto index = it->second;
-
-            assert(index < m_open_slot.size());
-            assert(m_open_slot[index] == false);
-            assert(m_count < m_open_slot.size());
-
-            ++m_count;
-            m_open_slot[index] = true;
-            m_buffer_map.erase(it);
-            m_cv.notify_one();
-        }
-    }
-
-    size_t get_buffer_size() const
-    {
-        return m_buffer_count * sizeof(T);
-    }
-
-    size_t get_buffer_count() const
-    {
-        return m_buffer_count;
-    }
-
-    typedef T type;
-
-private:
-    void set_count(size_t count)
-    {
-        assert(count > 0);
-        m_open_slot.resize(count, true);
-        m_count = count;
-    }
-
-    std::vector<T> m_buffers;
-    std::unordered_map<T, size_t> m_buffer_map;
-
-    boost::condition_variable m_cv;
-    std::vector<bool> m_open_slot;
-    size_t m_count;
-    boost::mutex m_lock;
-
-    size_t m_buffer_count;
-};
-
-template <typename T>
-class bdb_safe_buffer_autolock
-{
-public:
-    bdb_safe_buffer_autolock(T &safe_buffer, typename T::type &buffer) :
-        m_safe_buffer(safe_buffer), m_buffer(nullptr)
-    {
-        m_buffer = m_safe_buffer.acquire_buffer();
-        buffer = m_buffer;
-    }
-
-    ~bdb_safe_buffer_autolock()
-    {
-        if (m_buffer != nullptr)
-        {
-            m_safe_buffer.release_buffer(m_buffer);
-            m_buffer = nullptr;
-        }
-    }
-private:
-    T &m_safe_buffer;
-    typename T::type m_buffer;
-};
-
-class BlockchainBDB : public BlockchainDB
-{
-public:
-  BlockchainBDB(bool batch_transactions=false);
-  ~BlockchainBDB();
-
-  virtual void open(const std::string& filename, const int db_flags);
-
-  virtual void close();
-
-  virtual void sync();
-
-  virtual void reset();
-
-  virtual std::vector<std::string> get_filenames() const;
-
-  virtual bool remove_data_file(const std::string& folder);
-
-  virtual std::string get_db_name() const;
-
-  virtual bool lock();
-
-  virtual void unlock();
-
-  virtual bool block_exists(const crypto::hash& h, uint64_t *height = NULL) const;
-
-  virtual block get_block(const crypto::hash& h) const;
-
-  virtual uint64_t get_block_height(const crypto::hash& h) const;
-
-  virtual block_header get_block_header(const crypto::hash& h) const;
-
-  virtual block get_block_from_height(const uint64_t& height) const;
-
-  virtual uint64_t get_block_timestamp(const uint64_t& height) const;
-
-  virtual uint64_t get_top_block_timestamp() const;
-
-  virtual size_t get_block_weight(const uint64_t& height) const;
-
-  virtual difficulty_type get_block_cumulative_difficulty(const uint64_t& height) const;
-
-  virtual difficulty_type get_block_difficulty(const uint64_t& height) const;
-
-  virtual uint64_t get_block_already_generated_coins(const uint64_t& height) const;
-
-  virtual crypto::hash get_block_hash_from_height(const uint64_t& height) const;
-
-  virtual std::vector<block> get_blocks_range(const uint64_t& h1, const uint64_t& h2) const;
-
-  virtual std::vector<crypto::hash> get_hashes_range(const uint64_t& h1, const uint64_t& h2) const;
-
-  virtual crypto::hash top_block_hash() const;
-
-  virtual block get_top_block() const;
-
-  virtual uint64_t height() const;
-
-  virtual bool tx_exists(const crypto::hash& h) const;
-
-  virtual uint64_t get_tx_unlock_time(const crypto::hash& h) const;
-
-  virtual transaction get_tx(const crypto::hash& h) const;
-
-  virtual uint64_t get_tx_count() const;
-
-  virtual std::vector<transaction> get_tx_list(const std::vector<crypto::hash>& hlist) const;
-
-  virtual uint64_t get_tx_block_height(const crypto::hash& h) const;
-
-  virtual uint64_t get_num_outputs(const uint64_t& amount) const;
-
-  virtual uint64_t get_indexing_base() const { return 1; }
-
-  virtual output_data_t get_output_key(const uint64_t& amount, const uint64_t& index);
-  virtual void get_output_key(const uint64_t &amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs);
-
-  virtual tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const;
-  virtual void get_output_tx_and_index_from_global(const std::vector<uint64_t> &global_indices,
-          std::vector<tx_out_index> &tx_out_indices) const;
-
-  virtual tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index);
-  virtual void get_output_tx_and_index(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<tx_out_index> &indices);
-
-  virtual std::vector<uint64_t> get_tx_amount_output_indices(const crypto::hash& h) const;
-
-  virtual bool has_key_image(const crypto::key_image& img) const;
-
-  virtual uint64_t add_block( const block& blk
-                            , size_t block_weight
-                            , const difficulty_type& cumulative_difficulty
-                            , const uint64_t& coins_generated
-                            , const std::vector<transaction>& txs
-                            );
-
-  virtual void set_batch_transactions(bool batch_transactions);
-  virtual bool batch_start(uint64_t batch_num_blocks=0);
-  virtual void batch_commit();
-  virtual void batch_stop();
-  virtual void batch_abort();
-
-  virtual void block_txn_start(bool readonly);
-  virtual void block_txn_stop();
-  virtual void block_txn_abort();
-
-  virtual void pop_block(block& blk, std::vector<transaction>& txs);
-
-#if defined(BDB_BULK_CAN_THREAD)
-  virtual bool can_thread_bulk_indices() const { return true; }
-#else
-  virtual bool can_thread_bulk_indices() const { return false; }
-#endif
-
-  /**
-   * @brief return a histogram of outputs on the blockchain
-   *
-   * @param amounts optional set of amounts to lookup
-   *
-   * @return a set of amount/instances
-   */
-  std::map<uint64_t, uint64_t> get_output_histogram(const std::vector<uint64_t> &amounts) const;
-
-private:
-  virtual void add_block( const block& blk
-                , size_t block_weight
-                , const difficulty_type& cumulative_difficulty
-                , const uint64_t& coins_generated
-                , const crypto::hash& block_hash
-                );
-
-  virtual void remove_block();
-
-  virtual void add_transaction_data(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash& tx_hash, const crypto::hash& tx_prunable_hash);
-
-  virtual void remove_transaction_data(const crypto::hash& tx_hash, const transaction& tx);
-
-  virtual void add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment);
-
-  virtual void remove_output(const tx_out& tx_output);
-
-  void remove_tx_outputs(const crypto::hash& tx_hash, const transaction& tx);
-
-  void remove_output(const uint64_t& out_index, const uint64_t amount);
-  void remove_amount_output_index(const uint64_t amount, const uint64_t global_output_index);
-
-  virtual void add_spent_key(const crypto::key_image& k_image);
-
-  virtual void remove_spent_key(const crypto::key_image& k_image);
-
-  void get_output_global_indices(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<uint64_t> &global_indices);
-
-  virtual bool for_all_key_images(std::function<bool(const crypto::key_image&)>) const;
-  virtual bool for_all_blocks(std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)>) const;
-  virtual bool for_all_transactions(std::function<bool(const crypto::hash&, const cryptonote::transaction&)>, bool pruned) const;
-  virtual bool for_all_outputs(std::function<bool(uint64_t amount, const crypto::hash &tx_hash, size_t tx_idx)> f) const;
-
-  // Hard fork related storage
-  virtual void set_hard_fork_version(uint64_t height, uint8_t version);
-  virtual uint8_t get_hard_fork_version(uint64_t height) const;
-  virtual void check_hard_fork_info();
-  virtual void drop_hard_fork_info();
-
-  /**
-   * @brief get the global index of the index-th output of the given amount
-   *
-   * @param amount the output amount
-   * @param index the index into the set of outputs of that amount
-   *
-   * @return the global index of the desired output
-   */
-  uint64_t get_output_global_index(const uint64_t& amount, const uint64_t& index);
-  output_data_t get_output_key(const uint64_t& global_index) const;
-  void checkpoint_worker() const;
-  void check_open() const;
-
-  virtual bool is_read_only() const;
-
-  //
-  // fix up anything that may be wrong due to past bugs
-  virtual void fixup();
-
-  bool m_run_checkpoint;
-  std::unique_ptr<boost::thread> m_checkpoint_thread;
-  typedef bdb_safe_buffer<void *> bdb_safe_buffer_t;
-  bdb_safe_buffer_t m_buffer;
-
-  DbEnv* m_env;
-
-  Db* m_blocks;
-  Db* m_block_heights;
-  Db* m_block_hashes;
-  Db* m_block_timestamps;
-  Db* m_block_sizes;
-  Db* m_block_diffs;
-  Db* m_block_coins;
-
-  Db* m_txs;
-  Db* m_tx_unlocks;
-  Db* m_tx_heights;
-  Db* m_tx_outputs;
-
-  Db* m_output_txs;
-  Db* m_output_indices;
-  Db* m_output_amounts;
-  Db* m_output_keys;
-
-  Db* m_spent_keys;
-
-  Db* m_hf_starting_heights;
-  Db* m_hf_versions;
-
-  Db* m_properties;
-
-  uint64_t m_height;
-  uint64_t m_num_outputs;
-  std::string m_folder;
-  bdb_txn_safe *m_write_txn;
-
-  bool m_batch_transactions; // support for batch transactions
-};
-
-}  // namespace cryptonote