extrinsics: Decode extrinsics from blocks (#929)

* Update polkadot.scale Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics: Add extrinsics client Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics: Decode extrinsics Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * subxt: Add extrinsic error Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * blocks: Expose extrinsics Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * examples: Fetch and decode block extrinsics Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Fix clippy Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics: Fetch pallet and variant index Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * subxt: Move extrinsics on the subxt::blocks Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * example: Adjust example Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * metadata: Collect ExtrinsicMetadata Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * subxt: Implement StaticExtrinsic for the calls Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Adjust examples Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * codegen: Add root level Call enum Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Adjust testing Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * subxt: Add new decode interface Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * subxt: Merge ExtrinsicError with BlockError Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * examples: Find first extrinsic Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Move code to extrinsic_types Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Add Extrinsic struct Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Adjust examples Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * test: Decode extinsics Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics/test: Add fake metadata for static decoding Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics/test: Decode from insufficient bytes Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics/test: Check unsupported versions Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics/test: Statically decode to root and pallet enums Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics/tests: Remove clones Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * blocks: Fetch block body inline Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * blocks: Rename ExtrinsicIds to ExtrinsicPartTypeIds Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics/test: Check decode as_extrinsic Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * blocks: Remove InsufficientData error Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * blocks: Return error from extrinsic_metadata Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * extrinsics: Postpone decoding of call bytes Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * metadata_type: Rename variables Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Adjust calls path for example and tests Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * examples: Remove traces Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * book: Add extrinsics documentation Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * book: Improve extrinsics docs Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: James Wilson <james@jsdw.me>
2026-06-18 03:41:02 +00:00 · 2023-05-10 13:18:39 +03:00
parent b632ce7673
commit 3f16bb8d52
19 changed files with 6493 additions and 164 deletions
@@ -493,6 +493,30 @@ pub(crate) mod test_utils {
    /// Build fake metadata consisting of a single pallet that knows
    /// about the event type provided.
    pub fn metadata<E: TypeInfo + 'static>() -> Metadata {
+        // Extrinsic needs to contain at least the generic type parameter "Call"
+        // for the metadata to be valid.
+        // The "Call" type from the metadata is used to decode extrinsics.
+        // In reality, the extrinsic type has "Call", "Address", "Extra", "Signature" generic types.
+        #[allow(unused)]
+        #[derive(TypeInfo)]
+        struct ExtrinsicType<Call> {
+            call: Call,
+        }
+        // Because this type is used to decode extrinsics, we expect this to be a TypeDefVariant.
+        // Each pallet must contain one single variant.
+        #[allow(unused)]
+        #[derive(TypeInfo)]
+        enum RuntimeCall {
+            PalletName(Pallet),
+        }
+        // The calls of the pallet.
+        #[allow(unused)]
+        #[derive(TypeInfo)]
+        enum Pallet {
+            #[allow(unused)]
+            SomeCall,
+        }
+
        let pallets = vec![PalletMetadata {
            name: "Test",
            storage: None,
@@ -507,7 +531,7 @@ pub(crate) mod test_utils {
        }];

        let extrinsic = ExtrinsicMetadata {
-            ty: meta_type::<()>(),
+            ty: meta_type::<ExtrinsicType<RuntimeCall>>(),
            version: 0,
            signed_extensions: vec![],
        };