Added Trusted Query API implementation for Westend and Rococo relay chains (paritytech#6212)

Added missing API methods to Rococo and Westend parachains.
Preparatory work for making chopstick tests run smoothly.
Follow-up of
[PR#6039](paritytech#6039)

Author: x3c41a

polkadot/runtime/rococo/src/lib.rs

@@ -112,7 +112,10 @@ use sp_staking::SessionIndex;
 #[cfg(any(feature = "std", test))]
 use sp_version::NativeVersion;
 use sp_version::RuntimeVersion;
-use xcm::{latest::prelude::*, VersionedAssetId, VersionedAssets, VersionedLocation, VersionedXcm};
+use xcm::{
+	latest::prelude::*, VersionedAsset, VersionedAssetId, VersionedAssets, VersionedLocation,
+	VersionedXcm,
+};
 use xcm_builder::PayOverXcm;
 
 pub use frame_system::Call as SystemCall;
@@ -2622,6 +2625,15 @@ sp_api::impl_runtime_apis! {
 			genesis_config_presets::preset_names()
 		}
 	}
+
+	impl xcm_runtime_apis::trusted_query::TrustedQueryApi<Block> for Runtime {
+		fn is_trusted_reserve(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
+			XcmPallet::is_trusted_reserve(asset, location)
+		}
+		fn is_trusted_teleporter(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
+			XcmPallet::is_trusted_teleporter(asset, location)
+		}
+	}
 }
 
 #[cfg(all(test, feature = "try-runtime"))]

polkadot/runtime/westend/src/lib.rs

@@ -107,7 +107,10 @@ use sp_staking::SessionIndex;
 #[cfg(any(feature = "std", test))]
 use sp_version::NativeVersion;
 use sp_version::RuntimeVersion;
-use xcm::{latest::prelude::*, VersionedAssetId, VersionedAssets, VersionedLocation, VersionedXcm};
+use xcm::{
+	latest::prelude::*, VersionedAsset, VersionedAssetId, VersionedAssets, VersionedLocation,
+	VersionedXcm,
+};
 use xcm_builder::PayOverXcm;
 
 use xcm_runtime_apis::{
@@ -2791,4 +2794,13 @@ sp_api::impl_runtime_apis! {
 			genesis_config_presets::preset_names()
 		}
 	}
+
+	impl xcm_runtime_apis::trusted_query::TrustedQueryApi<Block> for Runtime {
+		fn is_trusted_reserve(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
+			XcmPallet::is_trusted_reserve(asset, location)
+		}
+		fn is_trusted_teleporter(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
+			XcmPallet::is_trusted_teleporter(asset, location)
+		}
+	}
 }

prdoc/pr_6212.prdoc

@@ -0,0 +1,32 @@
+# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
+# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json
+
+title: "Added Trusted Query API calls for Westend and Rococo chains"
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      Added is_trusted_reserve and is_trusted_teleporter API calls to relay chains.
+      Given an asset and a location, they return if the chain trusts that location as a reserve or teleporter for that asset respectively.
+      You can implement them on your runtime by simply calling a helper function on `pallet-xcm`.
+      ```rust
+      	impl xcm_runtime_apis::trusted_query::TrustedQueryApi<Block> for Runtime {
+        fn is_trusted_reserve(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
+          PolkadotXcm::is_trusted_reserve(asset, location)
+        }
+        fn is_trusted_teleporter(asset: VersionedAsset, location: VersionedLocation) -> Result<bool, xcm_runtime_apis::trusted_query::Error> {
+          PolkadotXcm::is_trusted_teleporter(asset, location)
+        }
+      }
+      ```
+
+  - audience: Runtime User
+    description: |
+      There's a new runtime API to check if a chain trust a Location as a reserve or teleporter for a given Asset.
+      It's implemented in all the relays and system parachains in Westend and Rococo.
+
+crates:
+  - name: westend-runtime
+    bump: minor
+  - name: rococo-runtime
+    bump: minor