impl trait DataProviderExtended (#153)

oracle/src/lib.rs

@@ -26,7 +26,7 @@ use sp_std::{fmt, marker, prelude::*, result, vec};
 // would cause compiling error in `decl_module!` and `construct_runtime!`
 // #3295 https://github.com/paritytech/substrate/issues/3295
 use frame_system::{self as system, ensure_signed};
-pub use orml_traits::{CombineData, DataProvider, OnNewData, OnRedundantCall};
+pub use orml_traits::{CombineData, DataProvider, DataProviderExtended, OnNewData, OnRedundantCall};
 use sp_runtime::transaction_validity::{
 	InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,
 };
@@ -214,6 +214,12 @@ impl<T: Trait> DataProvider<T::OracleKey, T::OracleValue> for Module<T> {
 	}
 }
 
+impl<T: Trait> DataProviderExtended<T::OracleKey, T::OracleValue, T::AccountId> for Module<T> {
+	fn feed_value(who: T::AccountId, key: T::OracleKey, value: T::OracleValue) -> DispatchResult {
+		Self::_feed_values(who, vec![(key, value)])
+	}
+}
+
 impl<T: Trait> Module<T> {
 	fn _feed_values(who: T::AccountId, values: Vec<(T::OracleKey, T::OracleValue)>) -> DispatchResult {
 		ensure!(T::OperatorProvider::can_feed_data(&who), Error::<T>::NoPermission);

traits/src/lib.rs

@@ -304,6 +304,10 @@ pub trait DataProvider<Key, Value> {
 	fn get(key: &Key) -> Option<Value>;
 }
 
+pub trait DataProviderExtended<Key, Value, AccountId>: DataProvider<Key, Value> {
+	fn feed_value(who: AccountId, key: Key, value: Value) -> DispatchResult;
+}
+
 pub trait PriceProvider<CurrencyId, Price> {
 	fn get_price(base: CurrencyId, quote: CurrencyId) -> Option<Price>;
 }