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Infinite scroll: implementation clean up (#81725)

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* Infinite scroll: clean up for clarity

* Infinite scroll: clean up test

* Formatting

* Infinite scroll: disable by feature flag

* Infinite scroll: improve visibility of the lower loader
This commit is contained in:
Matias Chomicki 2024-02-02 13:45:20 +01:00 committed by GitHub
parent 574078b977
commit e749c2b062
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2 changed files with 117 additions and 115 deletions
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164
public/app/features/logs/components/InfiniteScroll.test.tsx
View File

@ -3,6 +3,7 @@ import React, { useEffect, useRef, useState } from 'react';
import { LogRowModel, dateTimeForTimeZone } from '@grafana/data';
import { convertRawToRange } from '@grafana/data/src/datetime/rangeutil';
import { config } from '@grafana/runtime';
import { LogsSortOrder } from '@grafana/schema';
import { InfiniteScroll, Props, SCROLLING_THRESHOLD } from './InfiniteScroll';
@ -50,6 +51,45 @@ function ScrollWithWrapper({ children, ...props }: Props) {
);
}
function setup(loadMoreMock: () => void, startPosition: number, rows: LogRowModel[], order: LogsSortOrder) {
const { element, events } = getMockElement(startPosition);
function scrollTo(position: number) {
element.scrollTop = position;
act(() => {
events['scroll'](new Event('scroll'));
});
}
function wheel(deltaY: number) {
act(() => {
const event = new WheelEvent('wheel', { deltaY });
events['wheel'](event);
});
}
render(
<InfiniteScroll
{...defaultProps}
sortOrder={order}
rows={rows}
scrollElement={element as unknown as HTMLDivElement}
loadMoreLogs={loadMoreMock}
>
<div data-testid="contents" style={{ height: 100 }} />
</InfiniteScroll>
);
return { element, events, scrollTo, wheel };
}
beforeAll(() => {
config.featureToggles.logsInfiniteScrolling = true;
});
afterAll(() => {
config.featureToggles.logsInfiniteScrolling = false;
});
describe('InfiniteScroll', () => {
test('Wraps components without adding DOM elements', async () => {
const { container } = render(
@ -81,39 +121,29 @@ describe('InfiniteScroll', () => {
rows = createLogRows(absoluteRange.from + 2 * SCROLLING_THRESHOLD, absoluteRange.to - 2 * SCROLLING_THRESHOLD);
});
function setup(loadMoreMock: () => void, startPosition: number) {
const { element, events } = getMockElement(startPosition);
render(
<InfiniteScroll
{...defaultProps}
sortOrder={order}
rows={rows}
scrollElement={element as unknown as HTMLDivElement}
loadMoreLogs={loadMoreMock}
>
<div data-testid="contents" style={{ height: 100 }} />
</InfiniteScroll>
);
return { element, events };
}
test.each([
['top', 10, 0],
['bottom', 90, 100],
])('Requests more logs when scrolling %s', async (_: string, startPosition: number, endPosition: number) => {
['bottom', 50, 60],
])(
'Requests more logs when scrolling %s',
async (direction: string, startPosition: number, endPosition: number) => {
const loadMoreMock = jest.fn();
const { element, events } = setup(loadMoreMock, startPosition);
const { scrollTo, element } = setup(loadMoreMock, startPosition, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
element.scrollTop = endPosition;
act(() => {
events['scroll'](new Event('scroll'));
});
scrollTo(endPosition);
expect(loadMoreMock).toHaveBeenCalled();
expect(await screen.findByTestId('Spinner')).toBeInTheDocument();
});
if (direction === 'bottom') {
// Bottom loader visibility trick
expect(element.scrollTo).toHaveBeenCalled();
} else {
expect(element.scrollTo).not.toHaveBeenCalled();
}
}
);
test.each([
['up', -5, 0],
@ -122,14 +152,11 @@ describe('InfiniteScroll', () => {
'Requests more logs when moving the mousewheel %s',
async (_: string, deltaY: number, startPosition: number) => {
const loadMoreMock = jest.fn();
const { events } = setup(loadMoreMock, startPosition);
const { wheel } = setup(loadMoreMock, startPosition, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
act(() => {
const event = new WheelEvent('wheel', { deltaY });
events['wheel'](event);
});
wheel(deltaY);
expect(loadMoreMock).toHaveBeenCalled();
expect(await screen.findByTestId('Spinner')).toBeInTheDocument();
@ -138,33 +165,28 @@ describe('InfiniteScroll', () => {
test('Does not request more logs when there is no scroll', async () => {
const loadMoreMock = jest.fn();
const { element, events } = setup(loadMoreMock, 0);
const { scrollTo, element } = setup(loadMoreMock, 0, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
element.clientHeight = 40;
element.scrollHeight = element.clientHeight;
act(() => {
events['scroll'](new Event('scroll'));
});
scrollTo(40);
expect(loadMoreMock).not.toHaveBeenCalled();
expect(screen.queryByTestId('Spinner')).not.toBeInTheDocument();
});
test('Requests newer logs from the most recent timestamp', async () => {
const startPosition = order === LogsSortOrder.Descending ? 10 : 90; // Scroll top
const endPosition = order === LogsSortOrder.Descending ? 0 : 100; // Scroll bottom
const startPosition = order === LogsSortOrder.Descending ? 10 : 50; // Scroll top
const endPosition = order === LogsSortOrder.Descending ? 0 : 60; // Scroll bottom
const loadMoreMock = jest.fn();
const { element, events } = setup(loadMoreMock, startPosition);
const { scrollTo } = setup(loadMoreMock, startPosition, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
element.scrollTop = endPosition;
act(() => {
events['scroll'](new Event('scroll'));
});
scrollTo(endPosition);
expect(loadMoreMock).toHaveBeenCalledWith({
from: rows[rows.length - 1].timeEpochMs,
@ -173,18 +195,15 @@ describe('InfiniteScroll', () => {
});
test('Requests older logs from the oldest timestamp', async () => {
const startPosition = order === LogsSortOrder.Ascending ? 10 : 90; // Scroll top
const endPosition = order === LogsSortOrder.Ascending ? 0 : 100; // Scroll bottom
const startPosition = order === LogsSortOrder.Ascending ? 10 : 50; // Scroll top
const endPosition = order === LogsSortOrder.Ascending ? 0 : 60; // Scroll bottom
const loadMoreMock = jest.fn();
const { element, events } = setup(loadMoreMock, startPosition);
const { scrollTo } = setup(loadMoreMock, startPosition, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
element.scrollTop = endPosition;
act(() => {
events['scroll'](new Event('scroll'));
});
scrollTo(endPosition);
expect(loadMoreMock).toHaveBeenCalledWith({
from: absoluteRange.from,
@ -193,39 +212,20 @@ describe('InfiniteScroll', () => {
});
describe('With absolute range matching visible range', () => {
function setup(loadMoreMock: () => void, startPosition: number, rows: LogRowModel[]) {
const { element, events } = getMockElement(startPosition);
render(
<InfiniteScroll
{...defaultProps}
sortOrder={order}
rows={rows}
scrollElement={element as unknown as HTMLDivElement}
loadMoreLogs={loadMoreMock}
>
<div data-testid="contents" style={{ height: 100 }} />
</InfiniteScroll>
);
return { element, events };
}
test.each([
['top', 10, 0],
['bottom', 90, 100],
['bottom', 50, 60],
])(
'It does not request more when scrolling %s',
async (_: string, startPosition: number, endPosition: number) => {
// Visible range matches the current range
const rows = createLogRows(absoluteRange.from, absoluteRange.to);
const loadMoreMock = jest.fn();
const { element, events } = setup(loadMoreMock, startPosition, rows);
const { scrollTo } = setup(loadMoreMock, startPosition, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
element.scrollTop = endPosition;
act(() => {
events['scroll'](new Event('scroll'));
});
scrollTo(endPosition);
expect(loadMoreMock).not.toHaveBeenCalled();
expect(screen.queryByTestId('Spinner')).not.toBeInTheDocument();
@ -235,39 +235,20 @@ describe('InfiniteScroll', () => {
});
describe('With relative range matching visible range', () => {
function setup(loadMoreMock: () => void, startPosition: number, rows: LogRowModel[]) {
const { element, events } = getMockElement(startPosition);
render(
<InfiniteScroll
{...defaultProps}
sortOrder={order}
rows={rows}
scrollElement={element as unknown as HTMLDivElement}
loadMoreLogs={loadMoreMock}
>
<div data-testid="contents" style={{ height: 100 }} />
</InfiniteScroll>
);
return { element, events };
}
test.each([
['top', 10, 0],
['bottom', 90, 100],
['bottom', 50, 60],
])(
'It does not request more when scrolling %s',
async (_: string, startPosition: number, endPosition: number) => {
// Visible range matches the current range
const rows = createLogRows(absoluteRange.from, absoluteRange.to);
const loadMoreMock = jest.fn();
const { element, events } = setup(loadMoreMock, startPosition, rows);
const { scrollTo } = setup(loadMoreMock, startPosition, rows, order);
expect(await screen.findByTestId('contents')).toBeInTheDocument();
element.scrollTop = endPosition;
act(() => {
events['scroll'](new Event('scroll'));
});
scrollTo(endPosition);
expect(loadMoreMock).not.toHaveBeenCalled();
expect(screen.queryByTestId('Spinner')).not.toBeInTheDocument();
@ -301,6 +282,7 @@ function getMockElement(scrollTop: number) {
scrollHeight: 100,
clientHeight: 40,
scrollTop,
scrollTo: jest.fn(),
};
return { element, events };

60
public/app/features/logs/components/InfiniteScroll.tsx
View File

@ -3,7 +3,7 @@ import React, { ReactNode, useEffect, useRef, useState } from 'react';
import { AbsoluteTimeRange, LogRowModel, TimeRange } from '@grafana/data';
import { convertRawToRange, isRelativeTime, isRelativeTimeRange } from '@grafana/data/src/datetime/rangeutil';
import { reportInteraction } from '@grafana/runtime';
import { config, reportInteraction } from '@grafana/runtime';
import { LogsSortOrder, TimeZone } from '@grafana/schema';
import { LoadingIndicator } from './LoadingIndicator';
@ -33,13 +33,16 @@ export const InfiniteScroll = ({
const [lowerOutOfRange, setLowerOutOfRange] = useState(false);
const [upperLoading, setUpperLoading] = useState(false);
const [lowerLoading, setLowerLoading] = useState(false);
const rowsRef = useRef<LogRowModel[]>(rows);
const lastScroll = useRef<number>(scrollElement?.scrollTop || 0);
// Reset messages when range/order/rows change
useEffect(() => {
setUpperOutOfRange(false);
setLowerOutOfRange(false);
}, [range, rows, sortOrder]);
// Reset loading messages when loading stops
useEffect(() => {
if (!loading) {
setUpperLoading(false);
@ -47,13 +50,32 @@ export const InfiniteScroll = ({
}
}, [loading]);
// Ensure bottom loader visibility
useEffect(() => {
if (lowerLoading && scrollElement) {
scrollElement.scrollTo(0, scrollElement.scrollHeight - scrollElement.clientHeight);
}
}, [lowerLoading, scrollElement]);
// Request came back with no new past rows
useEffect(() => {
if (rows !== rowsRef.current && rows.length === rowsRef.current.length && (upperLoading || lowerLoading)) {
if (sortOrder === LogsSortOrder.Descending && lowerLoading) {
setLowerOutOfRange(true);
} else if (sortOrder === LogsSortOrder.Ascending && upperLoading) {
setUpperOutOfRange(true);
}
}
rowsRef.current = rows;
}, [lowerLoading, rows, sortOrder, upperLoading]);
useEffect(() => {
if (!scrollElement || !loadMoreLogs) {
return;
}
function handleScroll(event: Event | WheelEvent) {
if (!scrollElement || !loadMoreLogs || !rows.length || loading) {
if (!scrollElement || !loadMoreLogs || !rows.length || loading || !config.featureToggles.logsInfiniteScrolling) {
return;
}
event.stopImmediatePropagation();
@ -69,15 +91,12 @@ export const InfiniteScroll = ({
}
function scrollTop() {
if (!canScrollTop(getVisibleRange(rows), range, timeZone, sortOrder)) {
const newRange = canScrollTop(getVisibleRange(rows), range, timeZone, sortOrder);
if (!newRange) {
setUpperOutOfRange(true);
return;
}
setUpperOutOfRange(false);
const newRange =
sortOrder === LogsSortOrder.Descending
? getNextRange(getVisibleRange(rows), range, timeZone)
: getPrevRange(getVisibleRange(rows), range);
loadMoreLogs?.(newRange);
setUpperLoading(true);
reportInteraction('grafana_logs_infinite_scrolling', {
@ -87,15 +106,12 @@ export const InfiniteScroll = ({
}
function scrollBottom() {
if (!canScrollBottom(getVisibleRange(rows), range, timeZone, sortOrder)) {
const newRange = canScrollBottom(getVisibleRange(rows), range, timeZone, sortOrder);
if (!newRange) {
setLowerOutOfRange(true);
return;
}
setLowerOutOfRange(false);
const newRange =
sortOrder === LogsSortOrder.Descending
? getPrevRange(getVisibleRange(rows), range)
: getNextRange(getVisibleRange(rows), range, timeZone);
loadMoreLogs?.(newRange);
setLowerLoading(true);
reportInteraction('grafana_logs_infinite_scrolling', {
@ -160,9 +176,8 @@ function shouldLoadMore(event: Event | WheelEvent, element: HTMLDivElement, last
scrollDirection === ScrollDirection.Top
? element.scrollTop
: element.scrollHeight - element.scrollTop - element.clientHeight;
const coef = 1;
return diff <= coef ? scrollDirection : ScrollDirection.NoScroll;
return diff <= 1 ? scrollDirection : ScrollDirection.NoScroll;
}
function getVisibleRange(rows: LogRowModel[]) {
@ -195,13 +210,16 @@ function canScrollTop(
currentRange: TimeRange,
timeZone: TimeZone,
sortOrder: LogsSortOrder
) {
): AbsoluteTimeRange | undefined {
if (sortOrder === LogsSortOrder.Descending) {
// When requesting new logs, update the current range if using relative time ranges.
currentRange = updateCurrentRange(currentRange, timeZone);
return currentRange.to.valueOf() - visibleRange.to > SCROLLING_THRESHOLD;
const canScroll = currentRange.to.valueOf() - visibleRange.to > SCROLLING_THRESHOLD;
return canScroll ? getNextRange(visibleRange, currentRange, timeZone) : undefined;
}
return Math.abs(currentRange.from.valueOf() - visibleRange.from) > SCROLLING_THRESHOLD;
const canScroll = Math.abs(currentRange.from.valueOf() - visibleRange.from) > SCROLLING_THRESHOLD;
return canScroll ? getPrevRange(visibleRange, currentRange) : undefined;
}
function canScrollBottom(
@ -209,13 +227,15 @@ function canScrollBottom(
currentRange: TimeRange,
timeZone: TimeZone,
sortOrder: LogsSortOrder
) {
): AbsoluteTimeRange | undefined {
if (sortOrder === LogsSortOrder.Descending) {
return Math.abs(currentRange.from.valueOf() - visibleRange.from) > SCROLLING_THRESHOLD;
const canScroll = Math.abs(currentRange.from.valueOf() - visibleRange.from) > SCROLLING_THRESHOLD;
return canScroll ? getPrevRange(visibleRange, currentRange) : undefined;
}
// When requesting new logs, update the current range if using relative time ranges.
currentRange = updateCurrentRange(currentRange, timeZone);
return currentRange.to.valueOf() - visibleRange.to > SCROLLING_THRESHOLD;
const canScroll = currentRange.to.valueOf() - visibleRange.to > SCROLLING_THRESHOLD;
return canScroll ? getNextRange(visibleRange, currentRange, timeZone) : undefined;
}
// Given a TimeRange, returns a new instance if using relative time, or else the same.