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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 { pluralIfNeeded, queryDruidSql, QueryManager } from '../../../utils';
import { Capabilities } from '../../../utils/capabilities';
import { HomeViewCard } from '../home-view-card/home-view-card';
export interface DatasourcesCardProps {
capabilities: Capabilities;
}
export interface DatasourcesCardState {
datasourceCountLoading: boolean;
datasourceCount: number;
datasourceCountError?: string;
}
export class DatasourcesCard extends React.PureComponent<
DatasourcesCardProps,
DatasourcesCardState
> {
private datasourceQueryManager: QueryManager<Capabilities, any>;
constructor(props: DatasourcesCardProps, context: any) {
super(props, context);
this.state = {
datasourceCountLoading: false,
datasourceCount: 0,
};
this.datasourceQueryManager = new QueryManager({
processQuery: async capabilities => {
let datasources: string[];
if (capabilities.hasSql()) {
datasources = await queryDruidSql({
query: `SELECT datasource FROM sys.segments GROUP BY 1`,
});
} else if (capabilities.hasCoordinatorAccess()) {
const datasourcesResp = await axios.get('/druid/coordinator/v1/datasources');
datasources = datasourcesResp.data;
} else {
throw new Error(`must have SQL or coordinator access`);
}
return datasources.length;
},
onStateChange: ({ result, loading, error }) => {
this.setState({
datasourceCountLoading: loading,
datasourceCount: result,
datasourceCountError: error || undefined,
});
},
});
}
componentDidMount(): void {
const { capabilities } = this.props;
this.datasourceQueryManager.runQuery(capabilities);
}
componentWillUnmount(): void {
this.datasourceQueryManager.terminate();
}
render(): JSX.Element {
const { datasourceCountLoading, datasourceCountError, datasourceCount } = this.state;
return (
<HomeViewCard
className="datasources-card"
href={'#datasources'}
icon={IconNames.MULTI_SELECT}
title={'Datasources'}
loading={datasourceCountLoading}
error={datasourceCountError}
>
{pluralIfNeeded(datasourceCount, 'datasource')}
</HomeViewCard>
);
}
}
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