Parameterize AccountData (#409)

* Add custom config example * Make account data storage item configurable * Fix contracts * Regenerate polkadot codegen * Fmt * Specify different type for `MyConfig::Index` * Update comment in custom config example * Assign concrete types for default AccountData impl * Fmt * Fix contracts tests * Fmt * Add comments * Unlink doc comment trait (subxt not in scope) * Fix missing nonce field error message * Update codegen/src/api/mod.rs Co-authored-by: David <dvdplm@gmail.com> * Update examples/custom_config.rs Co-authored-by: David <dvdplm@gmail.com> * Rename Nonce assoc type to Index for consistency * Add module level docs about codegen assumptions Co-authored-by: David <dvdplm@gmail.com>
2026-04-23 06:08:01 +00:00 · 2022-01-31 12:46:29 +00:00
parent 79b56612e4
commit f5d8a846ec
6 changed files with 666 additions and 146 deletions
@@ -0,0 +1,70 @@
+// Copyright 2019-2022 Parity Technologies (UK) Ltd.
+// This file is part of subxt.
+//
+// subxt is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// subxt is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with subxt.  If not, see <http://www.gnu.org/licenses/>.
+
+use sp_keyring::AccountKeyring;
+use subxt::{
+    ClientBuilder,
+    Config,
+    DefaultConfig,
+    DefaultExtra,
+    PairSigner,
+};
+
+#[subxt::subxt(runtime_metadata_path = "examples/polkadot_metadata.scale")]
+pub mod polkadot {}
+
+/// Custom [`Config`] impl where the default types for the target chain differ from the
+/// [`DefaultConfig`]
+#[derive(Clone, Debug, Default, Eq, PartialEq)]
+pub struct MyConfig;
+impl Config for MyConfig {
+    // This is different from the default `u32`.
+    //
+    // *Note* that in this example it does differ from the actual `Index` type in the
+    // polkadot runtime used, so some operations will fail. Normally when using a custom `Config`
+    // impl types MUST match exactly those used in the actual runtime.
+    type Index = u64;
+    type BlockNumber = <DefaultConfig as Config>::BlockNumber;
+    type Hash = <DefaultConfig as Config>::Hash;
+    type Hashing = <DefaultConfig as Config>::Hashing;
+    type AccountId = <DefaultConfig as Config>::AccountId;
+    type Address = <DefaultConfig as Config>::Address;
+    type Header = <DefaultConfig as Config>::Header;
+    type Signature = <DefaultConfig as Config>::Signature;
+    type Extrinsic = <DefaultConfig as Config>::Extrinsic;
+}
+
+#[async_std::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let api = ClientBuilder::new()
+        .build()
+        .await?
+        .to_runtime_api::<polkadot::RuntimeApi<MyConfig, DefaultExtra<MyConfig>>>();
+
+    let signer = PairSigner::new(AccountKeyring::Alice.pair());
+    let dest = AccountKeyring::Bob.to_account_id().into();
+
+    let hash = api
+        .tx()
+        .balances()
+        .transfer(dest, 10_000)
+        .sign_and_submit(&signer)
+        .await?;
+
+    println!("Balance transfer extrinsic submitted: {}", hash);
+
+    Ok(())
+}