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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { IconNames } from '@blueprintjs/icons';
import axios from 'axios';
import { sum } from 'd3-array';
import React from 'react';
import { pluralIfNeeded, queryDruidSql, QueryManager } from '../../../utils';
import { Capabilities } from '../../../utils/capabilities';
import { deepGet } from '../../../utils/object-change';
import { HomeViewCard } from '../home-view-card/home-view-card';
export interface SegmentsCardProps {
capabilities: Capabilities;
}
export interface SegmentsCardState {
segmentCountLoading: boolean;
segmentCount: number;
unavailableSegmentCount: number;
segmentCountError?: string;
}
export class SegmentsCard extends React.PureComponent<SegmentsCardProps, SegmentsCardState> {
private segmentQueryManager: QueryManager<Capabilities, any>;
constructor(props: SegmentsCardProps, context: any) {
super(props, context);
this.state = {
segmentCountLoading: false,
segmentCount: 0,
unavailableSegmentCount: 0,
};
this.segmentQueryManager = new QueryManager({
processQuery: async capabilities => {
if (capabilities.hasSql()) {
const segments = await queryDruidSql({
query: `SELECT
COUNT(*) as "count",
COUNT(*) FILTER (WHERE is_available = 0) as "unavailable"
FROM sys.segments`,
});
return segments.length === 1 ? segments[0] : null;
} else if (capabilities.hasCoordinatorAccess()) {
const loadstatusResp = await axios.get('/druid/coordinator/v1/loadstatus?simple');
const loadstatus = loadstatusResp.data;
const unavailableSegmentNum = sum(Object.keys(loadstatus), key => loadstatus[key]);
const datasourcesMetaResp = await axios.get('/druid/coordinator/v1/datasources?simple');
const datasourcesMeta = datasourcesMetaResp.data;
const availableSegmentNum = sum(datasourcesMeta, (curr: any) =>
deepGet(curr, 'properties.segments.count'),
);
return {
count: availableSegmentNum + unavailableSegmentNum,
unavailable: unavailableSegmentNum,
};
} else {
throw new Error(`must have SQL or coordinator access`);
}
},
onStateChange: ({ result, loading, error }) => {
this.setState({
segmentCountLoading: loading,
segmentCount: result ? result.count : 0,
unavailableSegmentCount: result ? result.unavailable : 0,
segmentCountError: error,
});
},
});
}
componentDidMount(): void {
const { capabilities } = this.props;
this.segmentQueryManager.runQuery(capabilities);
}
componentWillUnmount(): void {
this.segmentQueryManager.terminate();
}
render(): JSX.Element {
const {
segmentCountLoading,
segmentCountError,
segmentCount,
unavailableSegmentCount,
} = this.state;
return (
<HomeViewCard
className="segments-card"
href={'#segments'}
icon={IconNames.STACKED_CHART}
title={'Segments'}
loading={segmentCountLoading}
error={segmentCountError}
>
<p>{pluralIfNeeded(segmentCount, 'segment')}</p>
{Boolean(unavailableSegmentCount) && (
<p>{pluralIfNeeded(unavailableSegmentCount, 'unavailable segment')}</p>
)}
</HomeViewCard>
);
}
}
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