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-rw-r--r--src/blockchain_db/blockchain_db.cpp3
-rw-r--r--src/blockchain_db/blockchain_db.h17
-rw-r--r--src/blockchain_db/lmdb/db_lmdb.cpp213
-rw-r--r--src/blockchain_db/lmdb/db_lmdb.h7
-rw-r--r--src/blockchain_db/testdb.h152
5 files changed, 384 insertions, 8 deletions
diff --git a/src/blockchain_db/blockchain_db.cpp b/src/blockchain_db/blockchain_db.cpp
index d3eefef6e..041759593 100644
--- a/src/blockchain_db/blockchain_db.cpp
+++ b/src/blockchain_db/blockchain_db.cpp
@@ -197,6 +197,7 @@ void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const transacti
uint64_t BlockchainDB::add_block( const block& blk
, size_t block_weight
+ , uint64_t long_term_block_weight
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, const std::vector<transaction>& txs
@@ -241,7 +242,7 @@ uint64_t BlockchainDB::add_block( const block& blk
// call out to subclass implementation to add the block & metadata
time1 = epee::misc_utils::get_tick_count();
- add_block(blk, block_weight, cumulative_difficulty, coins_generated, num_rct_outs, blk_hash);
+ add_block(blk, block_weight, long_term_block_weight, cumulative_difficulty, coins_generated, num_rct_outs, blk_hash);
TIME_MEASURE_FINISH(time1);
time_add_block1 += time1;
diff --git a/src/blockchain_db/blockchain_db.h b/src/blockchain_db/blockchain_db.h
index 137d5958a..c3f11ba28 100644
--- a/src/blockchain_db/blockchain_db.h
+++ b/src/blockchain_db/blockchain_db.h
@@ -358,12 +358,14 @@ private:
*
* @param blk the block to be added
* @param block_weight the weight of the block (transactions and all)
+ * @param long_term_block_weight the long term block weight of the block (transactions and all)
* @param cumulative_difficulty the accumulated difficulty after this block
* @param coins_generated the number of coins generated total after this block
* @param blk_hash the hash of the block
*/
virtual void add_block( const block& blk
, size_t block_weight
+ , uint64_t long_term_block_weight
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, uint64_t num_rct_outs
@@ -375,7 +377,7 @@ private:
*
* The subclass implementing this will remove the block data from the top
* block in the chain. The data to be removed is that which was added in
- * BlockchainDB::add_block(const block& blk, size_t block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated, const crypto::hash& blk_hash)
+ * BlockchainDB::add_block(const block& blk, size_t block_weight, uint64_t long_term_block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated, const crypto::hash& blk_hash)
*
* If any of this cannot be done, the subclass should throw the corresponding
* subclass of DB_EXCEPTION
@@ -789,6 +791,7 @@ public:
*
* @param blk the block to be added
* @param block_weight the size of the block (transactions and all)
+ * @param long_term_block_weight the long term weight of the block (transactions and all)
* @param cumulative_difficulty the accumulated difficulty after this block
* @param coins_generated the number of coins generated total after this block
* @param txs the transactions in the block
@@ -797,6 +800,7 @@ public:
*/
virtual uint64_t add_block( const block& blk
, size_t block_weight
+ , uint64_t long_term_block_weight
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, const std::vector<transaction>& txs
@@ -985,6 +989,17 @@ public:
virtual uint64_t get_block_already_generated_coins(const uint64_t& height) const = 0;
/**
+ * @brief fetch a block's long term weight
+ *
+ * If the block does not exist, the subclass should throw BLOCK_DNE
+ *
+ * @param height the height requested
+ *
+ * @return the long term weight
+ */
+ virtual uint64_t get_block_long_term_weight(const uint64_t& height) const = 0;
+
+ /**
* @brief fetch a block's hash
*
* The subclass should return hash of the block with the
diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp
index 8a1303be9..00912a447 100644
--- a/src/blockchain_db/lmdb/db_lmdb.cpp
+++ b/src/blockchain_db/lmdb/db_lmdb.cpp
@@ -29,6 +29,7 @@
#include <boost/filesystem.hpp>
#include <boost/format.hpp>
+#include <boost/circular_buffer.hpp>
#include <memory> // std::unique_ptr
#include <cstring> // memcpy
@@ -53,7 +54,7 @@ using epee::string_tools::pod_to_hex;
using namespace crypto;
// Increase when the DB structure changes
-#define VERSION 3
+#define VERSION 4
namespace
{
@@ -277,7 +278,7 @@ typedef struct mdb_block_info_old
crypto::hash bi_hash;
} mdb_block_info_old;
-typedef struct mdb_block_info
+typedef struct mdb_block_info_2
{
uint64_t bi_height;
uint64_t bi_timestamp;
@@ -286,7 +287,21 @@ typedef struct mdb_block_info
difficulty_type bi_diff;
crypto::hash bi_hash;
uint64_t bi_cum_rct;
-} mdb_block_info;
+} mdb_block_info_2;
+
+typedef struct mdb_block_info_3
+{
+ uint64_t bi_height;
+ uint64_t bi_timestamp;
+ uint64_t bi_coins;
+ uint64_t bi_weight; // a size_t really but we need 32-bit compat
+ difficulty_type bi_diff;
+ crypto::hash bi_hash;
+ uint64_t bi_cum_rct;
+ uint64_t bi_long_term_block_weight;
+} mdb_block_info_3;
+
+typedef mdb_block_info_3 mdb_block_info;
typedef struct blk_height {
crypto::hash bh_hash;
@@ -694,7 +709,7 @@ estim:
return threshold_size;
}
-void BlockchainLMDB::add_block(const block& blk, size_t block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated,
+void BlockchainLMDB::add_block(const block& blk, size_t block_weight, uint64_t long_term_block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated,
uint64_t num_rct_outs, const crypto::hash& blk_hash)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
@@ -754,6 +769,7 @@ void BlockchainLMDB::add_block(const block& blk, size_t block_weight, const diff
const mdb_block_info *bi_prev = (const mdb_block_info*)h.mv_data;
bi.bi_cum_rct += bi_prev->bi_cum_rct;
}
+ bi.bi_long_term_block_weight = long_term_block_weight;
MDB_val_set(val, bi);
result = mdb_cursor_put(m_cur_block_info, (MDB_val *)&zerokval, &val, MDB_APPENDDUP);
@@ -2486,6 +2502,29 @@ uint64_t BlockchainLMDB::get_block_already_generated_coins(const uint64_t& heigh
return ret;
}
+uint64_t BlockchainLMDB::get_block_long_term_weight(const uint64_t& height) const
+{
+ LOG_PRINT_L3("BlockchainLMDB::" << __func__);
+ check_open();
+
+ TXN_PREFIX_RDONLY();
+ RCURSOR(block_info);
+
+ MDB_val_set(result, height);
+ auto get_result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &result, MDB_GET_BOTH);
+ if (get_result == MDB_NOTFOUND)
+ {
+ throw0(BLOCK_DNE(std::string("Attempt to get block long term weight from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- block info not in db").c_str()));
+ }
+ else if (get_result)
+ throw0(DB_ERROR("Error attempting to retrieve a long term block weight from the db"));
+
+ mdb_block_info *bi = (mdb_block_info *)result.mv_data;
+ uint64_t ret = bi->bi_long_term_block_weight;
+ TXN_POSTFIX_RDONLY();
+ return ret;
+}
+
crypto::hash BlockchainLMDB::get_block_hash_from_height(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
@@ -3524,7 +3563,7 @@ void BlockchainLMDB::block_txn_abort()
}
}
-uint64_t BlockchainLMDB::add_block(const block& blk, size_t block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated,
+uint64_t BlockchainLMDB::add_block(const block& blk, size_t block_weight, uint64_t long_term_block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated,
const std::vector<transaction>& txs)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
@@ -3543,7 +3582,7 @@ uint64_t BlockchainLMDB::add_block(const block& blk, size_t block_weight, const
try
{
- BlockchainDB::add_block(blk, block_weight, cumulative_difficulty, coins_generated, txs);
+ BlockchainDB::add_block(blk, block_weight, long_term_block_weight, cumulative_difficulty, coins_generated, txs);
}
catch (const DB_ERROR_TXN_START& e)
{
@@ -4768,6 +4807,166 @@ void BlockchainLMDB::migrate_2_3()
txn.commit();
}
+void BlockchainLMDB::migrate_3_4()
+{
+ LOG_PRINT_L3("BlockchainLMDB::" << __func__);
+ uint64_t i;
+ int result;
+ mdb_txn_safe txn(false);
+ MDB_val k, v;
+ char *ptr;
+ bool past_long_term_weight = false;
+
+ MGINFO_YELLOW("Migrating blockchain from DB version 3 to 4 - this may take a while:");
+
+ do {
+ LOG_PRINT_L1("migrating block info:");
+
+ result = mdb_txn_begin(m_env, NULL, 0, txn);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
+
+ MDB_stat db_stats;
+ if ((result = mdb_stat(txn, m_blocks, &db_stats)))
+ throw0(DB_ERROR(lmdb_error("Failed to query m_blocks: ", result).c_str()));
+ const uint64_t blockchain_height = db_stats.ms_entries;
+
+ boost::circular_buffer<uint64_t> long_term_block_weights(CRYPTONOTE_LONG_TERM_BLOCK_WEIGHT_WINDOW_SIZE);
+
+ /* the block_info table name is the same but the old version and new version
+ * have incompatible data. Create a new table. We want the name to be similar
+ * to the old name so that it will occupy the same location in the DB.
+ */
+ MDB_dbi o_block_info = m_block_info;
+ lmdb_db_open(txn, "block_infn", MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_info, "Failed to open db handle for block_infn");
+ mdb_set_dupsort(txn, m_block_info, compare_uint64);
+
+
+ MDB_cursor *c_blocks;
+ result = mdb_cursor_open(txn, m_blocks, &c_blocks);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to open a cursor for blocks: ", result).c_str()));
+
+ MDB_cursor *c_old, *c_cur;
+ i = 0;
+ while(1) {
+ if (!(i % 1000)) {
+ if (i) {
+ LOGIF(el::Level::Info) {
+ std::cout << i << " / " << blockchain_height << " \r" << std::flush;
+ }
+ txn.commit();
+ result = mdb_txn_begin(m_env, NULL, 0, txn);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
+ }
+ result = mdb_cursor_open(txn, m_block_info, &c_cur);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_infn: ", result).c_str()));
+ result = mdb_cursor_open(txn, o_block_info, &c_old);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_info: ", result).c_str()));
+ result = mdb_cursor_open(txn, m_blocks, &c_blocks);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to open a cursor for blocks: ", result).c_str()));
+ if (!i) {
+ MDB_stat db_stat;
+ result = mdb_stat(txn, m_block_info, &db_stats);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to query m_block_info: ", result).c_str()));
+ i = db_stats.ms_entries;
+ }
+ }
+ result = mdb_cursor_get(c_old, &k, &v, MDB_NEXT);
+ if (result == MDB_NOTFOUND) {
+ txn.commit();
+ break;
+ }
+ else if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to get a record from block_info: ", result).c_str()));
+ const mdb_block_info_2 *bi_old = (const mdb_block_info_2*)v.mv_data;
+ mdb_block_info_3 bi;
+ bi.bi_height = bi_old->bi_height;
+ bi.bi_timestamp = bi_old->bi_timestamp;
+ bi.bi_coins = bi_old->bi_coins;
+ bi.bi_weight = bi_old->bi_weight;
+ bi.bi_diff = bi_old->bi_diff;
+ bi.bi_hash = bi_old->bi_hash;
+ bi.bi_cum_rct = bi_old->bi_cum_rct;
+
+ // get block major version to determine which rule is in place
+ if (!past_long_term_weight)
+ {
+ MDB_val_copy<uint64_t> kb(bi.bi_height);
+ MDB_val vb;
+ result = mdb_cursor_get(c_blocks, &kb, &vb, MDB_SET);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to query m_blocks: ", result).c_str()));
+ if (vb.mv_size == 0)
+ throw0(DB_ERROR("Invalid data from m_blocks"));
+ const uint8_t block_major_version = *((const uint8_t*)vb.mv_data);
+ if (block_major_version >= HF_VERSION_LONG_TERM_BLOCK_WEIGHT)
+ past_long_term_weight = true;
+ }
+
+ uint64_t long_term_block_weight;
+ if (past_long_term_weight)
+ {
+ std::vector<uint64_t> weights(long_term_block_weights.begin(), long_term_block_weights.end());
+ uint64_t long_term_effective_block_median_weight = std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, epee::misc_utils::median(weights));
+ long_term_block_weight = std::min<uint64_t>(bi.bi_weight, long_term_effective_block_median_weight + long_term_effective_block_median_weight * 2 / 5);
+ }
+ else
+ {
+ long_term_block_weight = bi.bi_weight;
+ }
+ long_term_block_weights.push_back(long_term_block_weight);
+ bi.bi_long_term_block_weight = long_term_block_weight;
+
+ MDB_val_set(nv, bi);
+ result = mdb_cursor_put(c_cur, (MDB_val *)&zerokval, &nv, MDB_APPENDDUP);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to put a record into block_infn: ", result).c_str()));
+ /* we delete the old records immediately, so the overall DB and mapsize should not grow.
+ * This is a little slower than just letting mdb_drop() delete it all at the end, but
+ * it saves a significant amount of disk space.
+ */
+ result = mdb_cursor_del(c_old, 0);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_info: ", result).c_str()));
+ i++;
+ }
+
+ result = mdb_txn_begin(m_env, NULL, 0, txn);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
+ /* Delete the old table */
+ result = mdb_drop(txn, o_block_info, 1);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to delete old block_info table: ", result).c_str()));
+
+ RENAME_DB("block_infn");
+ mdb_dbi_close(m_env, m_block_info);
+
+ lmdb_db_open(txn, "block_info", MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_info, "Failed to open db handle for block_infn");
+ mdb_set_dupsort(txn, m_block_info, compare_uint64);
+
+ txn.commit();
+ } while(0);
+
+ uint32_t version = 4;
+ v.mv_data = (void *)&version;
+ v.mv_size = sizeof(version);
+ MDB_val_str(vk, "version");
+ result = mdb_txn_begin(m_env, NULL, 0, txn);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
+ result = mdb_put(txn, m_properties, &vk, &v, 0);
+ if (result)
+ throw0(DB_ERROR(lmdb_error("Failed to update version for the db: ", result).c_str()));
+ txn.commit();
+}
+
void BlockchainLMDB::migrate(const uint32_t oldversion)
{
if (oldversion < 1)
@@ -4776,6 +4975,8 @@ void BlockchainLMDB::migrate(const uint32_t oldversion)
migrate_1_2();
if (oldversion < 3)
migrate_2_3();
+ if (oldversion < 4)
+ migrate_3_4();
}
} // namespace cryptonote
diff --git a/src/blockchain_db/lmdb/db_lmdb.h b/src/blockchain_db/lmdb/db_lmdb.h
index c07ab8da5..5764f9ae4 100644
--- a/src/blockchain_db/lmdb/db_lmdb.h
+++ b/src/blockchain_db/lmdb/db_lmdb.h
@@ -225,6 +225,8 @@ public:
virtual uint64_t get_block_already_generated_coins(const uint64_t& height) const;
+ virtual uint64_t get_block_long_term_weight(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;
@@ -292,6 +294,7 @@ public:
virtual uint64_t add_block( const block& blk
, size_t block_weight
+ , uint64_t long_term_block_weight
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, const std::vector<transaction>& txs
@@ -341,6 +344,7 @@ private:
virtual void add_block( const block& blk
, size_t block_weight
+ , uint64_t long_term_block_weight
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, uint64_t num_rct_outs
@@ -405,6 +409,9 @@ private:
// migrate from DB version 2 to 3
void migrate_2_3();
+ // migrate from DB version 3 to 4
+ void migrate_3_4();
+
void cleanup_batch();
private:
diff --git a/src/blockchain_db/testdb.h b/src/blockchain_db/testdb.h
new file mode 100644
index 000000000..35dfbe673
--- /dev/null
+++ b/src/blockchain_db/testdb.h
@@ -0,0 +1,152 @@
+// Copyright (c) 2014-2018, 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.
+//
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#pragma once
+
+#include <string>
+#include <vector>
+#include <map>
+
+#include "blockchain_db.h"
+
+namespace cryptonote
+{
+
+class BaseTestDB: public cryptonote::BlockchainDB {
+public:
+ BaseTestDB() {}
+ virtual void open(const std::string& filename, const int db_flags = 0) { }
+ virtual void close() {}
+ virtual void sync() {}
+ virtual void safesyncmode(const bool onoff) {}
+ virtual void reset() {}
+ virtual std::vector<std::string> get_filenames() const { return std::vector<std::string>(); }
+ virtual bool remove_data_file(const std::string& folder) const { return true; }
+ virtual std::string get_db_name() const { return std::string(); }
+ virtual bool lock() { return true; }
+ virtual void unlock() { }
+ virtual bool batch_start(uint64_t batch_num_blocks=0, uint64_t batch_bytes=0) { return true; }
+ virtual void batch_stop() {}
+ virtual void set_batch_transactions(bool) {}
+ virtual void block_txn_start(bool readonly=false) {}
+ virtual void block_txn_stop() {}
+ virtual void block_txn_abort() {}
+ virtual void drop_hard_fork_info() {}
+ virtual bool block_exists(const crypto::hash& h, uint64_t *height) const { return false; }
+ virtual cryptonote::blobdata get_block_blob_from_height(const uint64_t& height) const { return cryptonote::t_serializable_object_to_blob(get_block_from_height(height)); }
+ virtual cryptonote::blobdata get_block_blob(const crypto::hash& h) const { return cryptonote::blobdata(); }
+ virtual bool get_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const { return false; }
+ virtual bool get_pruned_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const { return false; }
+ virtual bool get_prunable_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const { return false; }
+ virtual bool get_prunable_tx_hash(const crypto::hash& tx_hash, crypto::hash &prunable_hash) const { return false; }
+ virtual uint64_t get_block_height(const crypto::hash& h) const { return 0; }
+ virtual cryptonote::block_header get_block_header(const crypto::hash& h) const { return cryptonote::block_header(); }
+ virtual uint64_t get_block_timestamp(const uint64_t& height) const { return 0; }
+ virtual std::vector<uint64_t> get_block_cumulative_rct_outputs(const std::vector<uint64_t> &heights) const { return {}; }
+ virtual uint64_t get_top_block_timestamp() const { return 0; }
+ virtual size_t get_block_weight(const uint64_t& height) const { return 128; }
+ virtual cryptonote::difficulty_type get_block_cumulative_difficulty(const uint64_t& height) const { return 10; }
+ virtual cryptonote::difficulty_type get_block_difficulty(const uint64_t& height) const { return 0; }
+ virtual uint64_t get_block_already_generated_coins(const uint64_t& height) const { return 10000000000; }
+ virtual uint64_t get_block_long_term_weight(const uint64_t& height) const { return 128; }
+ virtual crypto::hash get_block_hash_from_height(const uint64_t& height) const { return crypto::hash(); }
+ virtual std::vector<cryptonote::block> get_blocks_range(const uint64_t& h1, const uint64_t& h2) const { return std::vector<cryptonote::block>(); }
+ virtual std::vector<crypto::hash> get_hashes_range(const uint64_t& h1, const uint64_t& h2) const { return std::vector<crypto::hash>(); }
+ virtual crypto::hash top_block_hash() const { return crypto::hash(); }
+ virtual cryptonote::block get_top_block() const { return cryptonote::block(); }
+ virtual uint64_t height() const { return 1; }
+ virtual bool tx_exists(const crypto::hash& h) const { return false; }
+ virtual bool tx_exists(const crypto::hash& h, uint64_t& tx_index) const { return false; }
+ virtual uint64_t get_tx_unlock_time(const crypto::hash& h) const { return 0; }
+ virtual cryptonote::transaction get_tx(const crypto::hash& h) const { return cryptonote::transaction(); }
+ virtual bool get_tx(const crypto::hash& h, cryptonote::transaction &tx) const { return false; }
+ virtual uint64_t get_tx_count() const { return 0; }
+ virtual std::vector<cryptonote::transaction> get_tx_list(const std::vector<crypto::hash>& hlist) const { return std::vector<cryptonote::transaction>(); }
+ virtual uint64_t get_tx_block_height(const crypto::hash& h) const { return 0; }
+ virtual uint64_t get_num_outputs(const uint64_t& amount) const { return 1; }
+ virtual uint64_t get_indexing_base() const { return 0; }
+ virtual cryptonote::output_data_t get_output_key(const uint64_t& amount, const uint64_t& index, bool include_commitmemt) const { return cryptonote::output_data_t(); }
+ virtual cryptonote::tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const { return cryptonote::tx_out_index(); }
+ virtual cryptonote::tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const { return cryptonote::tx_out_index(); }
+ virtual void get_output_tx_and_index(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<cryptonote::tx_out_index> &indices) const {}
+ virtual void get_output_key(const epee::span<const uint64_t> &amounts, const std::vector<uint64_t> &offsets, std::vector<cryptonote::output_data_t> &outputs, bool allow_partial = false) const {}
+ virtual bool can_thread_bulk_indices() const { return false; }
+ virtual std::vector<uint64_t> get_tx_output_indices(const crypto::hash& h) const { return std::vector<uint64_t>(); }
+ virtual std::vector<std::vector<uint64_t>> get_tx_amount_output_indices(const uint64_t tx_index, size_t n_txes) const { return std::vector<std::vector<uint64_t>>(); }
+ virtual bool has_key_image(const crypto::key_image& img) const { return false; }
+ virtual void remove_block() { }
+ virtual uint64_t add_transaction_data(const crypto::hash& blk_hash, const cryptonote::transaction& tx, const crypto::hash& tx_hash, const crypto::hash& tx_prunable_hash) {return 0;}
+ virtual void remove_transaction_data(const crypto::hash& tx_hash, const cryptonote::transaction& tx) {}
+ virtual uint64_t add_output(const crypto::hash& tx_hash, const cryptonote::tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment) {return 0;}
+ virtual void add_tx_amount_output_indices(const uint64_t tx_index, const std::vector<uint64_t>& amount_output_indices) {}
+ virtual void add_spent_key(const crypto::key_image& k_image) {}
+ virtual void remove_spent_key(const crypto::key_image& k_image) {}
+
+ virtual bool for_all_key_images(std::function<bool(const crypto::key_image&)>) const { return true; }
+ virtual bool for_blocks_range(const uint64_t&, const uint64_t&, std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)>) const { return true; }
+ virtual bool for_all_transactions(std::function<bool(const crypto::hash&, const cryptonote::transaction&)>, bool pruned) const { return true; }
+ virtual bool for_all_outputs(std::function<bool(uint64_t amount, const crypto::hash &tx_hash, uint64_t height, size_t tx_idx)> f) const { return true; }
+ virtual bool for_all_outputs(uint64_t amount, const std::function<bool(uint64_t height)> &f) const { return true; }
+ virtual bool is_read_only() const { return false; }
+ virtual std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> get_output_histogram(const std::vector<uint64_t> &amounts, bool unlocked, uint64_t recent_cutoff, uint64_t min_count) const { return std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>>(); }
+ virtual bool get_output_distribution(uint64_t amount, uint64_t from_height, uint64_t to_height, std::vector<uint64_t> &distribution, uint64_t &base) const { return false; }
+
+ virtual void add_txpool_tx(const crypto::hash &txid, const cryptonote::blobdata &blob, const cryptonote::txpool_tx_meta_t& details) {}
+ virtual void update_txpool_tx(const crypto::hash &txid, const cryptonote::txpool_tx_meta_t& details) {}
+ virtual uint64_t get_txpool_tx_count(bool include_unrelayed_txes = true) const { return 0; }
+ virtual bool txpool_has_tx(const crypto::hash &txid) const { return false; }
+ virtual void remove_txpool_tx(const crypto::hash& txid) {}
+ virtual bool get_txpool_tx_meta(const crypto::hash& txid, cryptonote::txpool_tx_meta_t &meta) const { return false; }
+ virtual bool get_txpool_tx_blob(const crypto::hash& txid, cryptonote::blobdata &bd) const { return false; }
+ virtual uint64_t get_database_size() const { return 0; }
+ virtual cryptonote::blobdata get_txpool_tx_blob(const crypto::hash& txid) const { return ""; }
+ virtual bool for_all_txpool_txes(std::function<bool(const crypto::hash&, const cryptonote::txpool_tx_meta_t&, const cryptonote::blobdata*)>, bool include_blob = false, bool include_unrelayed_txes = false) const { return false; }
+
+ virtual void add_block( const cryptonote::block& blk
+ , size_t block_weight
+ , uint64_t long_term_block_weight
+ , const cryptonote::difficulty_type& cumulative_difficulty
+ , const uint64_t& coins_generated
+ , uint64_t num_rct_outs
+ , const crypto::hash& blk_hash
+ ) { }
+ virtual cryptonote::block get_block_from_height(const uint64_t& height) const { return cryptonote::block(); }
+ virtual void set_hard_fork_version(uint64_t height, uint8_t version) {}
+ virtual uint8_t get_hard_fork_version(uint64_t height) const { return 0; }
+ virtual void check_hard_fork_info() {}
+
+ virtual uint32_t get_blockchain_pruning_seed() const { return 0; }
+ virtual bool prune_blockchain(uint32_t pruning_seed = 0) { return true; }
+ virtual bool update_pruning() { return true; }
+ virtual bool check_pruning() { return true; }
+ virtual void prune_outputs(uint64_t amount) {}
+};
+
+}