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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@polkadot/api-derive/chain

Просмотр файла: getBlock.js

import { combineLatest, map, of, switchMap } from 'rxjs';
import { createSignedBlockExtended } from '../type/index.js';
import { memo } from '../util/index.js';
import { getAuthorDetails } from './util.js';
/**
 * @name getBlock
 * @param {( Uint8Array | string )} hash - A block hash as U8 array or string.
 * @description Get a specific block (e.g. rpc.chain.getBlock) and extend it with the author
 * @example
 * <BR>
 *
 * ```javascript
 * const { author, block } = await api.derive.chain.getBlock('0x123...456');
 *
 * console.log(`block #${block.header.number} was authored by ${author}`);
 * ```
 */
export function getBlock(instanceId, api) {
    return memo(instanceId, (blockHash) => combineLatest([
        api.rpc.chain.getBlock(blockHash),
        api.queryAt(blockHash)
    ]).pipe(switchMap(([signedBlock, queryAt]) => combineLatest([
        of(signedBlock),
        queryAt.system.events(),
        getAuthorDetails(api, signedBlock.block.header, blockHash)
    ])), map(([signedBlock, events, [, validators, author]]) => createSignedBlockExtended(events.registry, signedBlock, events, validators, author))));
}

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