lbry-desktop/ui/component/fileDownloadLink/index.js
jessopb a3398843c2
Optimize selectClaimIsMine (#7370)
Frequently used; top in perf profile

Most of the time, you already have the claim object in the current context. `selectClaimIsMineForUri` will retrieve the claim again, which is wasteful, even if it is memoized (looking up the cache still takes time).

Break apart the logic and added the alternative `selectClaimIsMine` for faster lookup.

Co-authored-by: infinite-persistence <inf.persistence@gmail.com>
2021-12-31 12:52:26 -05:00

35 lines
1.4 KiB
JavaScript

import { connect } from 'react-redux';
import { selectClaimIsMine, selectClaimForUri, makeSelectClaimWasPurchased } from 'redux/selectors/claims';
import {
makeSelectFileInfoForUri,
makeSelectDownloadingForUri,
makeSelectLoadingForUri,
makeSelectStreamingUrlForUri,
} from 'redux/selectors/file_info';
import { makeSelectCostInfoForUri } from 'lbryinc';
import { doOpenModal, doAnalyticsView } from 'redux/actions/app';
import { doSetPlayingUri, doPlayUri } from 'redux/actions/content';
import FileDownloadLink from './view';
const select = (state, props) => {
const claim = selectClaimForUri(state, props.uri);
return {
fileInfo: makeSelectFileInfoForUri(props.uri)(state),
downloading: makeSelectDownloadingForUri(props.uri)(state),
loading: makeSelectLoadingForUri(props.uri)(state),
claimIsMine: selectClaimIsMine(state, claim),
claim,
costInfo: makeSelectCostInfoForUri(props.uri)(state),
claimWasPurchased: makeSelectClaimWasPurchased(props.uri)(state),
streamingUrl: makeSelectStreamingUrlForUri(props.uri)(state),
};
};
const perform = (dispatch) => ({
openModal: (modal, props) => dispatch(doOpenModal(modal, props)),
pause: () => dispatch(doSetPlayingUri({ uri: null })),
download: (uri) => dispatch(doPlayUri(uri, false, true, () => dispatch(doAnalyticsView(uri)))),
});
export default connect(select, perform)(FileDownloadLink);