[SON-307] Create PBTC asset

.gitlab-ci.yml

@@ -8,6 +8,7 @@ stages:
 build:
   stage: build
   script:
+    - rm -rf .git/modules/* ./docs ./libraries/fc
     - git submodule sync
     - git submodule update --init --recursive
     - cmake .

libraries/chain/db_maint.cpp

@@ -1853,12 +1853,40 @@ void perform_son_tasks(database& db)
          a.lifetime_referrer_fee_percentage = GRAPHENE_100_PERCENT - GRAPHENE_DEFAULT_NETWORK_PERCENT_OF_FEE;
       });
 
-      db.modify( gpo, [&]( global_property_object& gpo ) {
+      db.modify( gpo, [&son_account]( global_property_object& gpo ) {
             gpo.parameters.extensions.value.son_account = son_account.get_id();
             if( gpo.pending_parameters )
                gpo.pending_parameters->extensions.value.son_account = son_account.get_id();
       });
    }
+   // create BTC asset here because son_account is the issuer of the BTC
+   if (gpo.parameters.btc_asset() == asset_id_type())
+   {
+      const asset_dynamic_data_object& dyn_asset =
+         db.create<asset_dynamic_data_object>([](asset_dynamic_data_object& a) {
+            a.current_supply = 0;
+         });
+
+      const asset_object& btc_asset =
+         db.create<asset_object>( [&gpo, &dyn_asset]( asset_object& a ) {
+            a.symbol = "BTC";
+            a.options.max_supply = GRAPHENE_MAX_SHARE_SUPPLY;
+            a.precision = 8;
+            a.options.flags = 0;
+            a.options.issuer_permissions = 0;
+            a.issuer = *gpo.parameters.extensions.value.son_account;
+            a.options.core_exchange_rate.base.amount = 1;
+            a.options.core_exchange_rate.base.asset_id = asset_id_type(0);
+            a.options.core_exchange_rate.quote.amount = 1;
+            a.options.core_exchange_rate.quote.asset_id = asset_id_type(0);
+            a.dynamic_asset_data_id = dyn_asset.id;
+         });
+      db.modify( gpo, [&btc_asset]( global_property_object& gpo ) {
+            gpo.parameters.extensions.value.btc_asset = btc_asset.get_id();
+            if( gpo.pending_parameters )
+               gpo.pending_parameters->extensions.value.btc_asset = btc_asset.get_id();
+      });
+   }
 }
 
 void database::perform_chain_maintenance(const signed_block& next_block, const global_property_object& global_props)

libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp

@@ -59,6 +59,7 @@ namespace graphene { namespace chain {
       optional < uint32_t >           son_heartbeat_frequency;
       optional < uint32_t >           son_down_time;
       optional < account_id_type >    son_account;
+      optional < asset_id_type >      btc_asset;
    };
 
    struct chain_parameters
@@ -178,6 +179,9 @@ namespace graphene { namespace chain {
       inline account_id_type son_account() const {
          return extensions.value.son_account.valid() ? *extensions.value.son_account : GRAPHENE_NULL_ACCOUNT;
       }
+      inline asset_id_type btc_asset() const {
+         return extensions.value.btc_asset.valid() ? *extensions.value.btc_asset : asset_id_type();
+      }
    };
 
 } }  // graphene::chain
@@ -204,6 +208,7 @@ FC_REFLECT( graphene::chain::parameter_extension,
    (son_heartbeat_frequency)
    (son_down_time)
    (son_account)
+   (btc_asset)
 )
 
 FC_REFLECT( graphene::chain::chain_parameters,