DRY refactoring

src/cryptonote_core/blockchain.cpp

@@ -751,7 +751,7 @@ difficulty_type Blockchain::get_difficulty_for_next_block()
     m_timestamps = timestamps;
     m_difficulties = difficulties;
   }
-  size_t target = get_current_hard_fork_version() < 2 ? DIFFICULTY_TARGET_V1 : DIFFICULTY_TARGET_V2;
+  size_t target = get_difficulty_target();
   return next_difficulty(timestamps, difficulties, target);
 }
 //------------------------------------------------------------------
@@ -4075,6 +4075,11 @@ bool Blockchain::get_hard_fork_voting_info(uint8_t version, uint32_t &window, ui
   return m_hardfork->get_voting_info(version, window, votes, threshold, earliest_height, voting);
 }
 
+uint64_t Blockchain::get_difficulty_target() const
+{
+  return get_current_hard_fork_version() < 2 ? DIFFICULTY_TARGET_V1 : DIFFICULTY_TARGET_V2;
+}
+
 std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> Blockchain:: get_output_histogram(const std::vector<uint64_t> &amounts, bool unlocked, uint64_t recent_cutoff) const
 {
   return m_db->get_output_histogram(amounts, unlocked, recent_cutoff);

src/cryptonote_core/blockchain.h

@@ -774,6 +774,13 @@ namespace cryptonote
      */
     bool get_hard_fork_voting_info(uint8_t version, uint32_t &window, uint32_t &votes, uint32_t &threshold, uint64_t &earliest_height, uint8_t &voting) const;
 
+    /**
+     * @brief get difficulty target based on chain and hardfork version
+     *
+     * @return difficulty target
+     */
+    uint64_t get_difficulty_target() const;
+
     /**
      * @brief remove transactions from the transaction pool (if present)
      *

src/rpc/core_rpc_server.cpp

@@ -137,7 +137,7 @@ namespace cryptonote
     res.top_block_hash = string_tools::pod_to_hex(top_hash);
     res.target_height = m_core.get_target_blockchain_height();
     res.difficulty = m_core.get_blockchain_storage().get_difficulty_for_next_block();
-    res.target = m_core.get_blockchain_storage().get_current_hard_fork_version() < 2 ? DIFFICULTY_TARGET_V1 : DIFFICULTY_TARGET_V2;
+    res.target = m_core.get_blockchain_storage().get_difficulty_target();
     res.tx_count = m_core.get_blockchain_storage().get_total_transactions() - res.height; //without coinbase
     res.tx_pool_size = m_core.get_pool_transactions_count();
     res.alt_blocks_count = m_core.get_blockchain_storage().get_alternative_blocks_count();