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

Просмотр файла: contributions.js

import { BehaviorSubject, combineLatest, EMPTY, map, of, startWith, switchMap, tap, toArray } from 'rxjs';
import { arrayFlatten, isFunction, nextTick } from '@polkadot/util';
import { memo } from '../util/index.js';
import { extractContributed } from './util.js';
const PAGE_SIZE_K = 1000; // limit aligned with the 1k on the node (trie lookups are heavy)
function _getUpdates(api, paraId) {
    let added = [];
    let removed = [];
    return api.query.system.events().pipe(switchMap((events) => {
        const changes = extractContributed(paraId, events);
        if (changes.added.length || changes.removed.length) {
            added = added.concat(...changes.added);
            removed = removed.concat(...changes.removed);
            return of({ added, addedDelta: changes.added, blockHash: events.createdAtHash?.toHex() || '-', removed, removedDelta: changes.removed });
        }
        return EMPTY;
    }), startWith({ added, addedDelta: [], blockHash: '-', removed, removedDelta: [] }));
}
function _eventTriggerAll(api, paraId) {
    return api.query.system.events().pipe(switchMap((events) => {
        const items = events.filter(({ event: { data: [eventParaId], method, section } }) => section === 'crowdloan' &&
            ['AllRefunded', 'Dissolved', 'PartiallyRefunded'].includes(method) &&
            eventParaId.eq(paraId));
        return items.length
            ? of(events.createdAtHash?.toHex() || '-')
            : EMPTY;
    }), startWith('-'));
}
function _getKeysPaged(api, childKey) {
    const subject = new BehaviorSubject(undefined);
    return subject.pipe(switchMap((startKey) => api.rpc.childstate.getKeysPaged(childKey, '0x', PAGE_SIZE_K, startKey)), tap((keys) => {
        nextTick(() => {
            keys.length === PAGE_SIZE_K
                ? subject.next(keys[PAGE_SIZE_K - 1].toHex())
                : subject.complete();
        });
    }), toArray(), // toArray since we want to startSubject to be completed
    map((keyArr) => arrayFlatten(keyArr)));
}
function _getAll(api, paraId, childKey) {
    return _eventTriggerAll(api, paraId).pipe(switchMap(() => isFunction(api.rpc.childstate.getKeysPaged)
        ? _getKeysPaged(api, childKey)
        : api.rpc.childstate.getKeys(childKey, '0x')), map((keys) => keys.map((k) => k.toHex())));
}
function _contributions(api, paraId, childKey) {
    return combineLatest([
        _getAll(api, paraId, childKey),
        _getUpdates(api, paraId)
    ]).pipe(map(([keys, { added, blockHash, removed }]) => {
        const contributorsMap = {};
        keys.forEach((k) => {
            contributorsMap[k] = true;
        });
        added.forEach((k) => {
            contributorsMap[k] = true;
        });
        removed.forEach((k) => {
            delete contributorsMap[k];
        });
        return {
            blockHash,
            contributorsHex: Object.keys(contributorsMap)
        };
    }));
}
export function contributions(instanceId, api) {
    return memo(instanceId, (paraId) => api.derive.crowdloan.childKey(paraId).pipe(switchMap((childKey) => childKey
        ? _contributions(api, paraId, childKey)
        : of({ blockHash: '-', contributorsHex: [] }))));
}

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