Update to subxt 0.32.1, use account_nonce API (#1934)

* Update to subxt 0.32.1, use account_nonce API

* Comment

Cargo.toml

@@ -66,9 +66,9 @@ serde_json = { version = "1.0.81" }
 sha2 = { version = "0.10" }
 sha3 = { version = "0.10" }
 static_assertions = { version = "1.1" }
-subxt = { version = "0.32.0" }
-subxt-metadata = { version = "0.32.0" }
-subxt-signer = { version = "0.32.0" }
+subxt = { version = "0.32.1" }
+subxt-metadata = { version = "0.32.1" }
+subxt-signer = { version = "0.32.1" }
 syn = { version = "2" }
 synstructure = { version = "0.13.0" }
 tokio = { version = "1.18.2" }

crates/e2e/src/xts.rs

@@ -373,34 +373,18 @@ where
     }
 
     /// Return the account nonce at the *best* block for an account ID.
-    ///
-    /// Replace this with the new `account_id` query available in the next `subxt`
-    /// release.
     async fn get_account_nonce(
         &self,
         account_id: &C::AccountId,
     ) -> Result<u64, subxt::Error> {
         let best_block = self.best_block().await;
-
-        let account_nonce_bytes = self
+        let account_nonce = self
             .client
-            .backend()
-            .call(
-                "AccountNonceApi_account_nonce",
-                Some(&scale::Encode::encode(&account_id)),
-                best_block,
-            )
+            .blocks()
+            .at(best_block)
+            .await?
+            .account_nonce(account_id)
             .await?;
-
-        // custom decoding from a u16/u32/u64 into a u64, based on the number of bytes we
-        // got back.
-        let cursor = &mut &account_nonce_bytes[..];
-        let account_nonce: u64 = match account_nonce_bytes.len() {
-            2 => <u16 as scale::Decode>::decode(cursor)?.into(),
-            4 => <u32 as scale::Decode>::decode(cursor)?.into(),
-            8 => <u64 as scale::Decode>::decode(cursor)?,
-            _ => return Err(subxt::Error::Decode(subxt::error::DecodeError::custom_string(format!("state call AccountNonceApi_account_nonce returned an unexpected number of bytes: {} (expected 2, 4 or 8)", account_nonce_bytes.len()))))
-        };
         Ok(account_nonce)
     }
 

integration-tests/e2e-call-runtime/Cargo.toml

@@ -10,7 +10,7 @@ ink = { path = "../../crates/ink", default-features = false }
 
 [dev-dependencies]
 ink_e2e = { path = "../../crates/e2e" }
-subxt = { version = "0.32.0", default-features = false }
+subxt = { version = "0.32.1", default-features = false }
 
 [lib]
 path = "lib.rs"