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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 React from 'react';
import { compact, lookupBy, pluralIfNeeded, queryDruidSql, QueryManager } from '../../../utils';
import { Capabilities } from '../../../utils/capabilities';
import { HomeViewCard } from '../home-view-card/home-view-card';
export interface ServicesCardProps {
capabilities: Capabilities;
}
export interface ServicesCardState {
serviceCountLoading: boolean;
coordinatorCount: number;
overlordCount: number;
routerCount: number;
brokerCount: number;
historicalCount: number;
middleManagerCount: number;
peonCount: number;
indexerCount: number;
serviceCountError?: string;
}
export class ServicesCard extends React.PureComponent<ServicesCardProps, ServicesCardState> {
static renderPluralIfNeededPair(
count1: number,
singular1: string,
count2: number,
singular2: string,
): JSX.Element | undefined {
const text = compact([
count1 ? pluralIfNeeded(count1, singular1) : undefined,
count2 ? pluralIfNeeded(count2, singular2) : undefined,
]).join(', ');
Eif (!text) return;
return <p>{text}</p>;
}
private serviceQueryManager: QueryManager<Capabilities, any>;
constructor(props: ServicesCardProps, context: any) {
super(props, context);
this.state = {
serviceCountLoading: false,
coordinatorCount: 0,
overlordCount: 0,
routerCount: 0,
brokerCount: 0,
historicalCount: 0,
middleManagerCount: 0,
peonCount: 0,
indexerCount: 0,
};
this.serviceQueryManager = new QueryManager({
processQuery: async capabilities => {
if (capabilities.hasSql()) {
const serviceCountsFromQuery: {
service_type: string;
count: number;
}[] = await queryDruidSql({
query: `SELECT server_type AS "service_type", COUNT(*) as "count" FROM sys.servers GROUP BY 1`,
});
return lookupBy(serviceCountsFromQuery, x => x.service_type, x => x.count);
} else if (capabilities.hasCoordinatorAccess()) {
const services = (await axios.get('/druid/coordinator/v1/servers?simple')).data;
const middleManager = capabilities.hasOverlordAccess()
? (await axios.get('/druid/indexer/v1/workers')).data
: [];
return {
historical: services.filter((s: any) => s.type === 'historical').length,
middle_manager: middleManager.length,
peon: services.filter((s: any) => s.type === 'indexer-executor').length,
};
} else {
throw new Error(`must have SQL or coordinator access`);
}
},
onStateChange: ({ result, loading, error }) => {
this.setState({
serviceCountLoading: loading,
coordinatorCount: result ? result.coordinator : 0,
overlordCount: result ? result.overlord : 0,
routerCount: result ? result.router : 0,
brokerCount: result ? result.broker : 0,
historicalCount: result ? result.historical : 0,
middleManagerCount: result ? result.middle_manager : 0,
peonCount: result ? result.peon : 0,
indexerCount: result ? result.indexer : 0,
serviceCountError: error,
});
},
});
}
componentDidMount(): void {
const { capabilities } = this.props;
this.serviceQueryManager.runQuery(capabilities);
}
componentWillUnmount(): void {
this.serviceQueryManager.terminate();
}
render(): JSX.Element {
const {
serviceCountLoading,
coordinatorCount,
overlordCount,
routerCount,
brokerCount,
historicalCount,
middleManagerCount,
peonCount,
indexerCount,
serviceCountError,
} = this.state;
return (
<HomeViewCard
className="services-card"
href={'#services'}
icon={IconNames.DATABASE}
title={'Services'}
loading={serviceCountLoading}
error={serviceCountError}
>
{ServicesCard.renderPluralIfNeededPair(
overlordCount,
'overlord',
coordinatorCount,
'coordinator',
)}
{ServicesCard.renderPluralIfNeededPair(routerCount, 'router', brokerCount, 'broker')}
{ServicesCard.renderPluralIfNeededPair(
historicalCount,
'historical',
middleManagerCount,
'middle manager',
)}
{ServicesCard.renderPluralIfNeededPair(peonCount, 'peon', indexerCount, 'indexer')}
</HomeViewCard>
);
}
}
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