@substrate/api-sidecar
Version:
REST service that makes it easy to interact with blockchain nodes built using Substrate's FRAME framework.
74 lines • 3.34 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.PalletsConstantsService = void 0;
const util_1 = require("@polkadot/util");
const AbstractPalletsService_1 = require("../AbstractPalletsService");
class PalletsConstantsService extends AbstractPalletsService_1.AbstractPalletsService {
async fetchConstantItem(historicApi, { hash, palletId, constantItemId, metadata }) {
const { api } = this;
const metadataFieldType = 'constants';
const palletMetadata = historicApi.registry.metadata;
const [palletMeta, palletMetaIdx] = this.findPalletMeta(palletMetadata, palletId, metadataFieldType);
// Even if `constantItemMetadata` is not used, we call this function to ensure it exists. The side effects
// of the constant item not existing are that `getConstItemMeta` will throw.
const constantItemMetadata = this.findPalletFieldItemMeta(historicApi, palletMeta, constantItemId, metadataFieldType);
let palletConstantMetadata;
if (metadata) {
palletConstantMetadata = constantItemMetadata;
}
const { number } = await api.rpc.chain.getHeader(hash);
return {
at: {
hash: hash,
height: number.unwrap().toString(10),
},
pallet: (0, util_1.stringCamelCase)(palletMeta.name),
palletIndex: palletMetaIdx,
constantsItem: constantItemId,
metadata: palletConstantMetadata,
};
}
async fetchConstants(historicApi, { hash, palletId, onlyIds }) {
const { api } = this;
const metadataFieldType = 'constants';
const metadata = historicApi.registry.metadata;
const [palletMeta, palletMetaIdx] = this.findPalletMeta(metadata, palletId, metadataFieldType);
const { number } = await api.rpc.chain.getHeader(hash);
let items;
if (palletMeta.constants.isEmpty) {
items = [];
}
else if (onlyIds) {
items = palletMeta.constants.map((itemMeta) => itemMeta.name);
}
else {
items = palletMeta.constants.map((itemMeta) => itemMeta);
}
return {
at: {
hash: hash,
height: number.unwrap().toString(10),
},
pallet: (0, util_1.stringCamelCase)(palletMeta.name),
palletIndex: palletMetaIdx,
items,
};
}
}
exports.PalletsConstantsService = PalletsConstantsService;
//# sourceMappingURL=PalletsConstantsService.js.map