Jaco Greeff
dd217f82b2
* Chunk keys & values retrievals on keys()/entries() * Bump chunk sizes * Fix concatMap index * Update mock
57 lines
2.0 KiB
TypeScript
57 lines
2.0 KiB
TypeScript
// Copyright 2017-2020 @polkadot/api-derive authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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import { ParaId } from '@polkadot/types/interfaces';
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import { DeriveParachain, DeriveParachainInfo } from '../types';
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import { DidUpdate, ParaInfoResult, PendingSwap, RelayDispatchQueueSize } from './types';
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import { Observable, combineLatest, of } from 'rxjs';
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import { map, switchMap } from 'rxjs/operators';
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import { ApiInterfaceRx } from '@polkadot/api/types';
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import { memo } from '../util';
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type Result = [
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ParaId[],
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DidUpdate,
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ParaInfoResult[],
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PendingSwap[],
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RelayDispatchQueueSize[]
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];
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function parse ([ids, didUpdate, infos, pendingSwaps, relayDispatchQueueSizes]: Result): DeriveParachain[] {
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return ids.map((id, index): DeriveParachain => {
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return {
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didUpdate: didUpdate.isSome
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? !!didUpdate.unwrap().some((paraId): boolean => paraId.eq(id))
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: false,
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id,
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info: { id, ...infos[index].unwrapOr(null) } as DeriveParachainInfo,
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pendingSwapId: pendingSwaps[index].unwrapOr(null),
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relayDispatchQueueSize: relayDispatchQueueSizes[index][0].toNumber()
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};
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});
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}
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export function overview (api: ApiInterfaceRx): () => Observable<DeriveParachain[]> {
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return memo((): Observable<DeriveParachain[]> =>
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api.query.registrar?.parachains && api.query.parachains
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? api.query.registrar.parachains<ParaId[]>().pipe(
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switchMap((paraIds) =>
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combineLatest([
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of(paraIds),
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api.query.parachains.didUpdate<DidUpdate>(),
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api.query.registrar.paras.multi<ParaInfoResult>(paraIds),
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api.query.registrar.pendingSwap.multi<PendingSwap>(paraIds),
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api.query.parachains.relayDispatchQueueSize.multi<RelayDispatchQueueSize>(paraIds)
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])
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),
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map((result: Result): DeriveParachain[] =>
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parse(result)
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)
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)
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: of([] as DeriveParachain[])
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);
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}
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