@substrate/api-sidecar
Version:
REST service that makes it easy to interact with blockchain nodes built using Substrate's FRAME framework.
117 lines • 4.76 kB
JavaScript
;
// Copyright 2017-2025 Parity Technologies (UK) Ltd.
// This file is part of Substrate API Sidecar.
//
// Substrate API Sidecar 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.
//
// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
Object.defineProperty(exports, "__esModule", { value: true });
exports.TransactionMaterialService = void 0;
const types_1 = require("@polkadot/types");
const http_errors_1 = require("http-errors");
const AbstractService_1 = require("../AbstractService");
class TransactionMaterialService extends AbstractService_1.AbstractService {
/**
* Fetch all the network information needed to construct a transaction offline.
*
* @param api ApiPromise to use for the call
* @param hash `BlockHash` to make call at
*/
async fetchTransactionMaterial(api, hash, metadataArg) {
if (!metadataArg) {
const [header, genesisHash, name, version] = await Promise.all([
api.rpc.chain.getHeader(hash),
api.rpc.chain.getBlockHash(0),
api.rpc.system.chain(),
api.rpc.state.getRuntimeVersion(hash),
]);
const at = {
hash,
height: header.number.toNumber().toString(10),
};
return {
at,
genesisHash,
chainName: name.toString(),
specName: version.specName.toString(),
specVersion: version.specVersion,
txVersion: version.transactionVersion,
};
}
const [header, metadata, genesisHash, name, version] = await Promise.all([
api.rpc.chain.getHeader(hash),
api.rpc.state.getMetadata(hash),
api.rpc.chain.getBlockHash(0),
api.rpc.system.chain(),
api.rpc.state.getRuntimeVersion(hash),
]);
const at = {
hash,
height: header.number.toNumber().toString(10),
};
const formattedMeta = metadataArg === 'scale' ? metadata.toHex() : metadata.toJSON();
return {
at,
genesisHash,
chainName: name.toString(),
specName: version.specName.toString(),
specVersion: version.specVersion,
txVersion: version.transactionVersion,
metadata: formattedMeta,
};
}
/**
* Fetch all the network information needed to construct a transaction offline.
*
* @param api ApiPromise to use for the call
* @param apiAt ApiDecoration instance
* @param hash `BlockHash` to make call at
*/
async fetchTransactionMaterialwithVersionedMetadata(api, apiAt, hash, metadataArg, metadataVersion) {
const [header, genesisHash, name, version] = await Promise.all([
api.rpc.chain.getHeader(hash),
api.rpc.chain.getBlockHash(0),
api.rpc.system.chain(),
api.rpc.state.getRuntimeVersion(hash),
]);
let metadata;
let metadataVersioned;
try {
metadata = await apiAt.call.metadata.metadataAtVersion(metadataVersion);
if (metadata) {
metadataVersioned = new types_1.Metadata(apiAt.registry, metadata.unwrap());
}
else {
throw new Error(`Metadata for version ${metadataVersion} is not available.`);
}
}
catch {
throw new http_errors_1.InternalServerError(`An error occured while attempting to fetch ${metadataVersion.toString()} metadata.`);
}
const at = {
hash,
height: header.number.toNumber().toString(10),
};
const formattedMeta = metadataArg === 'scale' ? metadata.toString() : metadataVersioned.toJSON();
return {
at,
genesisHash,
chainName: name.toString(),
specName: version.specName.toString(),
specVersion: version.specVersion,
txVersion: version.transactionVersion,
metadata: formattedMeta,
};
}
}
exports.TransactionMaterialService = TransactionMaterialService;
//# sourceMappingURL=TransactionMaterialService.js.map