@substrate/api-sidecar
Version:
REST service that makes it easy to interact with blockchain nodes built using Substrate's FRAME framework.
76 lines • 3.45 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.PalletsEventsService = void 0;
const util_1 = require("@polkadot/util");
const AbstractPalletsService_1 = require("../AbstractPalletsService");
class PalletsEventsService extends AbstractPalletsService_1.AbstractPalletsService {
async fetchEventItem(historicApi, { hash, palletId, eventItemId, metadata }) {
const { api } = this;
const metadataFieldType = 'events';
const palletMetadata = historicApi.registry.metadata;
const [palletMeta, palletMetaIdx] = this.findPalletMeta(palletMetadata, palletId, metadataFieldType);
// Even if `eventItemMetadata` is not used, we call this function to ensure it exists. The side effects
// of the event item not existing are that `getEventItemMeta` will throw.
const eventItemMetadata = this.findPalletFieldItemMeta(historicApi, palletMeta, eventItemId, metadataFieldType);
let palletEventMetadata;
if (metadata) {
palletEventMetadata = eventItemMetadata[1].meta;
}
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,
eventItem: eventItemId,
metadata: palletEventMetadata,
};
}
async fetchEvents(historicApi, { hash, palletId, onlyIds }) {
const { api } = this;
const metadataFieldType = 'events';
const metadata = historicApi.registry.metadata;
const [palletMeta, palletMetaIdx] = this.findPalletMeta(metadata, palletId, metadataFieldType);
const { number } = await api.rpc.chain.getHeader(hash);
const parsedPalletName = (0, util_1.stringCamelCase)(palletMeta.name.toString());
const events = historicApi.events[parsedPalletName];
let items;
if (palletMeta.events.isEmpty) {
items = [];
}
else if (onlyIds) {
items = Object.entries(events).map((eventItem) => eventItem[0]);
}
else {
items = Object.entries(events).map((eventItem) => eventItem[1].meta);
}
return {
at: {
hash: hash,
height: number.unwrap().toString(10),
},
pallet: (0, util_1.stringCamelCase)(palletMeta.name),
palletIndex: palletMetaIdx,
items,
};
}
}
exports.PalletsEventsService = PalletsEventsService;
//# sourceMappingURL=PalletsEventsService.js.map