Add Runtime Api version to metadata

Cargo.toml

@@ -787,7 +787,7 @@ frame-benchmarking-pallet-pov = { default-features = false, path = "substrate/fr
 frame-election-provider-solution-type = { path = "substrate/frame/election-provider-support/solution-type", default-features = false }
 frame-election-provider-support = { path = "substrate/frame/election-provider-support", default-features = false }
 frame-executive = { path = "substrate/frame/executive", default-features = false }
-frame-metadata = { version = "19.0.0", default-features = false }
+frame-metadata = { version = "20.0.0", default-features = false }
 frame-metadata-hash-extension = { path = "substrate/frame/metadata-hash-extension", default-features = false }
 frame-support = { path = "substrate/frame/support", default-features = false }
 frame-support-procedural = { path = "substrate/frame/support/procedural", default-features = false }
@@ -862,7 +862,7 @@ macro_magic = { version = "0.5.1" }
 maplit = { version = "1.0.2" }
 memmap2 = { version = "0.9.3" }
 memory-db = { version = "0.32.0", default-features = false }
-merkleized-metadata = { version = "0.3.0" }
+merkleized-metadata = { version = "0.4.0" }
 merlin = { version = "3.0", default-features = false }
 messages-relay = { path = "bridges/relays/messages" }
 metered = { version = "0.6.1", default-features = false, package = "prioritized-metered-channel" }

prdoc/pr_7607.prdoc

@@ -0,0 +1,12 @@
+title: Add Runtime Api version to metadata
+doc:
+- audience: Runtime Dev
+  description: |-
+    The runtime API implemented version is not explicitly shown in metadata, so here we add it to improve developer experience.
+
+    This closes #7352 .
+crates:
+- name: sp-api-proc-macro
+  bump: patch
+- name: sp-metadata-ir
+  bump: major

substrate/frame/support/test/tests/runtime_metadata.rs

@@ -200,6 +200,7 @@ fn runtime_metadata() {
 				" Documentation on multiline.",
 			]),
 			deprecation_info: DeprecationStatusIR::DeprecatedWithoutNote,
+			version: codec::Compact(1),
 
 		},
 		RuntimeApiMetadataIR {
@@ -238,6 +239,7 @@ fn runtime_metadata() {
 				" The `Core` runtime api that every Substrate runtime needs to implement.",
 			]),
 			deprecation_info: DeprecationStatusIR::NotDeprecated,
+			version: codec::Compact(5),
 		},
 	];
 

substrate/primitives/api/proc-macro/src/runtime_metadata.rs

@@ -184,6 +184,7 @@ pub fn generate_decl_runtime_metadata<'a>(
 						.collect(),
 					docs: #docs,
 					deprecation_info: #deprecation,
+					version: impl_version.into(),
 				}
 			}
 		}

substrate/primitives/metadata-ir/src/types.rs

@@ -52,8 +52,10 @@ pub struct RuntimeApiMetadataIR<T: Form = MetaForm> {
 	pub methods: Vec<RuntimeApiMethodMetadataIR<T>>,
 	/// Trait documentation.
 	pub docs: Vec<T::String>,
-	/// Deprecation info
+	/// Deprecation info.
 	pub deprecation_info: DeprecationStatusIR<T>,
+	/// Runtime API version.
+	pub version: Compact<u32>,
 }
 
 impl IntoPortable for RuntimeApiMetadataIR {
@@ -65,6 +67,7 @@ impl IntoPortable for RuntimeApiMetadataIR {
 			methods: registry.map_into_portable(self.methods),
 			docs: registry.map_into_portable(self.docs),
 			deprecation_info: self.deprecation_info.into_portable(registry),
+			version: self.version,
 		}
 	}
 }

substrate/primitives/metadata-ir/src/unstable.rs

@@ -59,6 +59,7 @@ impl From<RuntimeApiMetadataIR> for RuntimeApiMetadata {
 			methods: ir.methods.into_iter().map(Into::into).collect(),
 			docs: ir.docs,
 			deprecation_info: ir.deprecation_info.into(),
+			version: ir.version.into(),
 		}
 	}
 }