Issue #47 market history added to api

libraries/app/CMakeLists.txt

@@ -6,7 +6,7 @@ add_library( graphene_app
              plugin.cpp
            )
 
-target_link_libraries( graphene_app graphene_chain fc graphene_db graphene_net graphene_time graphene_utilities )
+target_link_libraries( graphene_app graphene_market_history graphene_chain fc graphene_db graphene_net graphene_time graphene_utilities )
 target_include_directories( graphene_app
                             PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include" )
 

libraries/app/api.cpp

@@ -445,6 +445,28 @@ namespace graphene { namespace app {
        }
        return result;
     }
+    vector<bucket_object> history_api::get_market_history( asset_id_type a, asset_id_type b, uint32_t bucket_seconds, fc::time_point_sec start, fc::time_point_sec end )const
+    { try {
+       FC_ASSERT(_app.chain_database());
+       const auto& db = *_app.chain_database();
+       vector<bucket_object> result;
+       result.reserve(100);
+
+       if( a > b ) std::swap(a,b);
+
+       const auto& bidx = db.get_index_type<bucket_index>();
+       const auto& by_key_idx = bidx.indices().get<by_key>();
+
+       auto itr = by_key_idx.lower_bound( bucket_key( a, b, bucket_seconds, start ) );
+       while( itr != by_key_idx.end() && itr->key.open <= end && result.size() < 100 )
+       {
+          if( !(itr->key.base == a && itr->key.quote == b && itr->key.seconds == bucket_seconds) )
+            return result;
+          result.push_back(*itr);
+          ++itr;
+       }
+       return result;
+    } FC_CAPTURE_AND_RETHROW( (a)(b)(bucket_seconds)(start)(end) ) }
 
     /** TODO: add secondary index that will accelerate this process */
     vector<proposal_object> database_api::get_proposed_transactions( account_id_type id )const
@@ -464,4 +486,5 @@ namespace graphene { namespace app {
        return result;
     }
 
+
 } } // graphene::app

libraries/app/include/graphene/app/api.hpp

@@ -29,10 +29,14 @@
 #include <graphene/chain/proposal_object.hpp>
 #include <graphene/net/node.hpp>
 
+
+#include <graphene/market_history/market_history_plugin.hpp>
+
 #include <fc/api.hpp>
 
 namespace graphene { namespace app {
    using namespace graphene::chain;
+   using namespace graphene::market_history;
 
    class application;
 
@@ -270,6 +274,7 @@ namespace graphene { namespace app {
                                                            int limit = 100,
                                                            operation_history_id_type start = operation_history_id_type())const;
 
+      vector<bucket_object> get_market_history( asset_id_type a, asset_id_type b, uint32_t bucket_seconds, fc::time_point_sec start, fc::time_point_sec end )const;
    private:
         application&              _app;
    };
@@ -372,7 +377,7 @@ FC_API(graphene::app::database_api,
        (get_transaction_hex)
        (get_proposed_transactions)
      )
-FC_API(graphene::app::history_api, (get_account_history))
+FC_API(graphene::app::history_api, (get_account_history)(get_market_history))
 FC_API(graphene::app::network_api, (broadcast_transaction)(add_node)(get_connected_peers))
 FC_API(graphene::app::login_api,
        (login)

libraries/plugins/market_history/include/graphene/market_history/market_history_plugin.hpp

@@ -42,6 +42,10 @@ namespace bpo = boost::program_options;
 
 struct bucket_key
 {
+   bucket_key( asset_id_type a, asset_id_type b, uint32_t s, fc::time_point_sec o )
+   :base(a),quote(b),seconds(s),open(o){}
+   bucket_key(){}
+
    asset_id_type      base;
    asset_id_type      quote;
    uint32_t           seconds = 0;

programs/witness_node/CMakeLists.txt

@@ -9,4 +9,4 @@ endif()
 #endif()
 
 target_link_libraries( witness_node
-                       PRIVATE graphene_app graphene_account_history graphene_witness graphene_chain fc ${CMAKE_DL_LIBS} ${PLATFORM_SPECIFIC_LIBS} )
+                       PRIVATE graphene_app graphene_account_history graphene_market_history graphene_witness graphene_chain fc ${CMAKE_DL_LIBS} ${PLATFORM_SPECIFIC_LIBS} )

programs/witness_node/main.cpp

@@ -19,6 +19,7 @@
 
 #include <graphene/witness/witness.hpp>
 #include <graphene/account_history/account_history_plugin.hpp>
+#include <graphene/market_history/market_history_plugin.hpp>
 
 #include <fc/thread/thread.hpp>
 #include <fc/interprocess/signals.hpp>
@@ -49,6 +50,7 @@ int main(int argc, char** argv) {
 
       auto witness_plug = node.register_plugin<witness_plugin::witness_plugin>();
       auto history_plug = node.register_plugin<account_history::account_history_plugin>();
+      auto market_history_plug = node.register_plugin<market_history::market_history_plugin>();
 
       {
          bpo::options_description cli, cfg;