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>
2026-04-25 22:17:58 +00:00 · 2023-05-10 13:18:39 +03:00
parent b632ce7673
commit 3f16bb8d52
19 changed files with 6493 additions and 164 deletions
@@ -2,10 +2,12 @@
 // This file is dual-licensed as Apache-2.0 or GPL-3.0.
 // see LICENSE for license details.

-use crate::test_context;
+use crate::{pair_signer, test_context, utils::node_runtime};
 use codec::Compact;
 use frame_metadata::RuntimeMetadataPrefixed;
 use futures::StreamExt;
+use sp_keyring::AccountKeyring;
+use subxt::blocks::BlocksClient;

 // Check that we can subscribe to non-finalized blocks.
 #[tokio::test]
@@ -118,3 +120,71 @@ async fn runtime_api_call() -> Result<(), subxt::Error> {
    assert_eq!(&metadata_call, metadata);
    Ok(())
 }
+
+#[tokio::test]
+async fn decode_extrinsics() {
+    let ctx = test_context().await;
+    let api = ctx.client();
+
+    let alice = pair_signer(AccountKeyring::Alice.pair());
+    let bob = pair_signer(AccountKeyring::Bob.pair());
+
+    // Generate a block that has unsigned and signed transactions.
+    let tx = node_runtime::tx()
+        .balances()
+        .transfer(bob.account_id().clone().into(), 10_000);
+
+    let signed_extrinsic = api
+        .tx()
+        .create_signed(&tx, &alice, Default::default())
+        .await
+        .unwrap();
+
+    let in_block = signed_extrinsic
+        .submit_and_watch()
+        .await
+        .unwrap()
+        .wait_for_in_block()
+        .await
+        .unwrap();
+
+    let block_hash = in_block.block_hash();
+
+    let block = BlocksClient::new(api).at(block_hash).await.unwrap();
+    let extrinsics = block.body().await.unwrap().extrinsics();
+    assert_eq!(extrinsics.len(), 2);
+    assert_eq!(extrinsics.block_hash(), block_hash);
+
+    assert!(extrinsics
+        .has::<node_runtime::balances::calls::types::Transfer>()
+        .unwrap());
+
+    assert!(extrinsics
+        .find_first::<node_runtime::balances::calls::types::Transfer>()
+        .unwrap()
+        .is_some());
+
+    let block_extrinsics = extrinsics
+        .iter()
+        .map(|res| res.unwrap())
+        .collect::<Vec<_>>();
+
+    assert_eq!(block_extrinsics.len(), 2);
+    let timestamp = block_extrinsics.get(0).unwrap();
+    timestamp.as_root_extrinsic::<node_runtime::Call>().unwrap();
+    timestamp
+        .as_pallet_extrinsic::<node_runtime::runtime_types::pallet_timestamp::pallet::Call>()
+        .unwrap();
+    timestamp
+        .as_extrinsic::<node_runtime::timestamp::calls::types::Set>()
+        .unwrap();
+    assert!(!timestamp.is_signed());
+
+    let tx = block_extrinsics.get(1).unwrap();
+    tx.as_root_extrinsic::<node_runtime::Call>().unwrap();
+    tx.as_pallet_extrinsic::<node_runtime::runtime_types::pallet_balances::pallet::Call>()
+        .unwrap();
+    tx.as_extrinsic::<node_runtime::balances::calls::types::Transfer>()
+        .unwrap();
+    assert!(tx.is_signed());
+}