added get_block_header issue cryptonomex#262

pmconrad · Apr 19, 2017 · 0aae0ea · 0aae0ea
1 parent 342c8a2
commit 0aae0ea
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diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
@@ -65,6 +65,7 @@ class database_api_impl : public std::enable_shared_from_this<database_api_impl>
 
       // Blocks and transactions
       optional<block_header> get_block_header(uint32_t block_num)const;
+      map<uint32_t,block_header> get_block_header_batch(const vector<uint32_t> block_num)const;
       optional<signed_block> get_block(uint32_t block_num)const;
       processed_transaction get_transaction( uint32_t block_num, uint32_t trx_in_block )const;
 
@@ -362,6 +363,24 @@ optional<block_header> database_api_impl::get_block_header(uint32_t block_num) c
       return *result;
    return {};
 }
+map<uint32_t,block_header> database_api::get_block_header_batch(const vector<uint32_t> block_num)const
+{
+   return my->get_block_header_batch( block_num );
+}
+
+map<uint32_t,block_header> database_api_impl::get_block_header_batch(const vector<uint32_t> block_num) const
+{
+   map<uint32_t,block_header> results;
+   for (const uint32_t& i : block_num) {
+      auto result = _db.fetch_block_by_number(i);
+      if (result)
+         results[i] = *result;
+      else
+         results[i] = {};
+
+   }
+   return results;
+}
 
 optional<signed_block> database_api::get_block(uint32_t block_num)const
 {

diff --git a/libraries/app/include/graphene/app/database_api.hpp b/libraries/app/include/graphene/app/database_api.hpp
@@ -158,6 +158,14 @@ class database_api
        */
       optional<block_header> get_block_header(uint32_t block_num)const;
 
+      /**
+      * @brief Retrieve multiple block header by block numbers
+      * @param block_num vector containing heights of the block whose header should be returned
+      * @return array of headers of the referenced blocks, or null if no matching block was found
+      */
+      map<uint32_t,block_header> get_block_header_batch(const vector<uint32_t> block_num)const;
+
+
       /**
        * @brief Retrieve a full, signed block
        * @param block_num Height of the block to be returned
@@ -588,6 +596,7 @@ FC_API(graphene::app::database_api,
 
    // Blocks and transactions
    (get_block_header)
+   (get_block_header_batch)
    (get_block)
    (get_transaction)
    (get_recent_transaction_by_id)