@substrate/api-sidecar
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REST service that makes it easy to interact with blockchain nodes built using Substrate's FRAME framework.
90 lines • 4.65 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/>.
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const middleware_1 = require("../../middleware");
const services_1 = require("../../services");
const AbstractController_1 = __importDefault(require("../AbstractController"));
/**
* GET asset information for all foreign assets.
*
* Query:
* - (Optional)`at`: Block at which to retrieve runtime version information at. Block
* identifier, as the block height or block hash. Defaults to most recent block.
* - (Optional)`useRcBlock`: When set to 'true', uses the relay chain block specified in the 'at' parameter to determine corresponding Asset Hub block(s). Only supported for Asset Hub endpoints.
*
* `/pallets/foreign-assets`
* Returns:
* - When using `useRcBlock` parameter: An array of response objects, one for each Asset Hub block found
* in the specified relay chain block. Returns empty array `[]` if no Asset Hub blocks found.
* - When using `at` parameter or no query params: A single response object.
*
* Response object structure:
* - `at`: Block number and hash at which the call was made.
* - `items`: An array containing the `AssetDetails` and `AssetMetadata` of every foreign asset.
* - `rcBlockNumber`: The relay chain block number used for the query. Only present when `useRcBlock` parameter is used.
* - `ahTimestamp`: The Asset Hub block timestamp. Only present when `useRcBlock` parameter is used.
*
* Substrate References:
* - Foreign Assets Pallet Instance in Kusama Asset Hub: https://github.com/paritytech/cumulus/blob/master/parachains/runtimes/assets/asset-hub-kusama/src/lib.rs#L295
*/
class PalletsForeignAssetsController extends AbstractController_1.default {
constructor(api) {
super(api, '/pallets/foreign-assets', new services_1.PalletsForeignAssetsService(api));
this.getForeignAssets = async ({ query: { at, useRcBlock } }, res) => {
if (useRcBlock === 'true') {
const rcAtResults = await this.getHashFromRcAt(at);
// Return empty array if no Asset Hub blocks found
if (rcAtResults.length === 0) {
PalletsForeignAssetsController.sanitizedSend(res, []);
return;
}
// Process each Asset Hub block found
const results = [];
for (const { ahHash, rcBlockHash, rcBlockNumber } of rcAtResults) {
const result = await this.service.fetchForeignAssets(ahHash);
const apiAt = await this.api.at(ahHash);
const ahTimestamp = await apiAt.query.timestamp.now();
const enhancedResult = {
...result,
rcBlockHash: rcBlockHash.toString(),
rcBlockNumber,
ahTimestamp: ahTimestamp.toString(),
};
results.push(enhancedResult);
}
PalletsForeignAssetsController.sanitizedSend(res, results);
}
else {
const hash = await this.getHashFromAt(at);
const result = await this.service.fetchForeignAssets(hash);
PalletsForeignAssetsController.sanitizedSend(res, result);
}
};
this.initRoutes();
}
initRoutes() {
this.router.use(this.path, middleware_1.validateUseRcBlock);
this.safeMountAsyncGetHandlers([['', this.getForeignAssets]]);
}
}
PalletsForeignAssetsController.controllerName = 'PalletsForeignAssets';
PalletsForeignAssetsController.requiredPallets = [['ForeignAssets']];
exports.default = PalletsForeignAssetsController;
//# sourceMappingURL=PalletsForeignAssetsController.js.map