lbry-desktop/ui/component/commentsList/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

67 lines
2.6 KiB
JavaScript

import { connect } from 'react-redux';
import { doResolveUris } from 'redux/actions/claims';
import {
selectClaimForUri,
makeSelectClaimForUri,
selectClaimIsMine,
selectFetchingMyChannels,
selectMyClaimIdsRaw,
} from 'redux/selectors/claims';
import {
selectTopLevelCommentsForUri,
makeSelectTopLevelTotalPagesForUri,
selectIsFetchingComments,
selectIsFetchingCommentsById,
selectIsFetchingReacts,
makeSelectTotalCommentsCountForUri,
selectOthersReacts,
selectMyReacts,
selectCommentIdsForUri,
selectSettingsByChannelId,
selectPinnedCommentsForUri,
} from 'redux/selectors/comments';
import { doCommentReset, doCommentList, doCommentById, doCommentReactList } from 'redux/actions/comments';
import { selectActiveChannelClaim } from 'redux/selectors/app';
import CommentsList from './view';
const select = (state, props) => {
const claim = selectClaimForUri(state, props.uri);
const activeChannelClaim = selectActiveChannelClaim(state);
const topLevelComments = selectTopLevelCommentsForUri(state, props.uri);
const resolvedComments =
topLevelComments && topLevelComments.length > 0
? topLevelComments.filter(({ channel_url }) => makeSelectClaimForUri(channel_url)(state) !== undefined)
: [];
return {
topLevelComments,
resolvedComments,
myChannelIds: selectMyClaimIdsRaw(state),
allCommentIds: selectCommentIdsForUri(state, props.uri),
pinnedComments: selectPinnedCommentsForUri(state, props.uri),
topLevelTotalPages: makeSelectTopLevelTotalPagesForUri(props.uri)(state),
totalComments: makeSelectTotalCommentsCountForUri(props.uri)(state),
claim,
claimIsMine: selectClaimIsMine(state, claim),
isFetchingComments: selectIsFetchingComments(state),
isFetchingCommentsById: selectIsFetchingCommentsById(state),
isFetchingReacts: selectIsFetchingReacts(state),
fetchingChannels: selectFetchingMyChannels(state),
settingsByChannelId: selectSettingsByChannelId(state),
myReactsByCommentId: selectMyReacts(state),
othersReactsById: selectOthersReacts(state),
activeChannelId: activeChannelClaim && activeChannelClaim.claim_id,
};
};
const perform = (dispatch) => ({
fetchTopLevelComments: (uri, page, pageSize, sortBy) => dispatch(doCommentList(uri, '', page, pageSize, sortBy)),
fetchComment: (commentId) => dispatch(doCommentById(commentId)),
fetchReacts: (commentIds) => dispatch(doCommentReactList(commentIds)),
resetComments: (claimId) => dispatch(doCommentReset(claimId)),
doResolveUris: (uris) => dispatch(doResolveUris(uris, true)),
});
export default connect(select, perform)(CommentsList);