rpc: expose recent median block size in getinfo

src/cryptonote_core/blockchain.cpp

@@ -133,7 +133,7 @@ static const uint64_t testnet_hard_fork_version_1_till = 624633;
 
 //------------------------------------------------------------------
 Blockchain::Blockchain(tx_memory_pool& tx_pool) :
-  m_db(), m_tx_pool(tx_pool), m_hardfork(NULL), m_timestamps_and_difficulties_height(0), m_current_block_cumul_sz_limit(0),
+  m_db(), m_tx_pool(tx_pool), m_hardfork(NULL), m_timestamps_and_difficulties_height(0), m_current_block_cumul_sz_limit(0), m_current_block_cumul_sz_median(0),
   m_enforce_dns_checkpoints(false), m_max_prepare_blocks_threads(4), m_db_blocks_per_sync(1), m_db_sync_mode(db_async), m_db_default_sync(false), m_fast_sync(true), m_show_time_stats(false), m_sync_counter(0), m_cancel(false)
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
@@ -1101,6 +1101,12 @@ uint64_t Blockchain::get_current_cumulative_blocksize_limit() const
   return m_current_block_cumul_sz_limit;
 }
 //------------------------------------------------------------------
+uint64_t Blockchain::get_current_cumulative_blocksize_median() const
+{
+  LOG_PRINT_L3("Blockchain::" << __func__);
+  return m_current_block_cumul_sz_median;
+}
+//------------------------------------------------------------------
 //TODO: This function only needed minor modification to work with BlockchainDB,
 //      and *works*.  As such, to reduce the number of things that might break
 //      in moving to BlockchainDB, this function will remain otherwise
@@ -3518,6 +3524,7 @@ bool Blockchain::update_next_cumulative_size_limit()
   get_last_n_blocks_sizes(sz, CRYPTONOTE_REWARD_BLOCKS_WINDOW);
 
   uint64_t median = epee::misc_utils::median(sz);
+  m_current_block_cumul_sz_median = median;
   if(median <= full_reward_zone)
     median = full_reward_zone;
 

src/cryptonote_core/blockchain.h

@@ -636,6 +636,13 @@ namespace cryptonote
      */
     uint64_t get_current_cumulative_blocksize_limit() const;
 
+    /**
+     * @brief gets the blocksize median based on recent blocks (same window as for the limit)
+     *
+     * @return the median
+     */
+    uint64_t get_current_cumulative_blocksize_median() const;
+
     /**
      * @brief gets the difficulty of the block with a given height
      *
@@ -962,6 +969,7 @@ namespace cryptonote
     // main chain
     transactions_container m_transactions;
     size_t m_current_block_cumul_sz_limit;
+    size_t m_current_block_cumul_sz_median;
 
     // metadata containers
     std::unordered_map<crypto::hash, std::unordered_map<crypto::key_image, std::vector<output_data_t>>> m_scan_table;

src/rpc/core_rpc_server.cpp

@@ -153,6 +153,7 @@ namespace cryptonote
     res.testnet = m_testnet;
     res.cumulative_difficulty = m_core.get_blockchain_storage().get_db().get_block_cumulative_difficulty(res.height - 1);
     res.block_size_limit = m_core.get_blockchain_storage().get_current_cumulative_blocksize_limit();
+    res.block_size_median = m_core.get_blockchain_storage().get_current_cumulative_blocksize_median();
     res.status = CORE_RPC_STATUS_OK;
     res.start_time = (uint64_t)m_core.get_start_time();
     res.free_space = m_restricted ? std::numeric_limits<uint64_t>::max() : m_core.get_free_space();
@@ -1339,6 +1340,7 @@ namespace cryptonote
     res.testnet = m_testnet;
     res.cumulative_difficulty = m_core.get_blockchain_storage().get_db().get_block_cumulative_difficulty(res.height - 1);
     res.block_size_limit = m_core.get_blockchain_storage().get_current_cumulative_blocksize_limit();
+    res.block_size_median = m_core.get_blockchain_storage().get_current_cumulative_blocksize_median();
     res.status = CORE_RPC_STATUS_OK;
     res.start_time = (uint64_t)m_core.get_start_time();
     res.free_space = m_restricted ? std::numeric_limits<uint64_t>::max() : m_core.get_free_space();

src/rpc/core_rpc_server_commands_defs.h

@@ -49,7 +49,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 1
-#define CORE_RPC_VERSION_MINOR 17
+#define CORE_RPC_VERSION_MINOR 18
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -926,6 +926,7 @@ namespace cryptonote
       std::string top_block_hash;
       uint64_t cumulative_difficulty;
       uint64_t block_size_limit;
+      uint64_t block_size_median;
       uint64_t start_time;
       uint64_t free_space;
       bool offline;
@@ -948,6 +949,7 @@ namespace cryptonote
         KV_SERIALIZE(top_block_hash)
         KV_SERIALIZE(cumulative_difficulty)
         KV_SERIALIZE(block_size_limit)
+        KV_SERIALIZE(block_size_median)
         KV_SERIALIZE(start_time)
         KV_SERIALIZE(free_space)
         KV_SERIALIZE(offline)