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import React, {Component} from 'react';
import './Connections.scss';
import axios from 'axios'
import Connection from "../components/Connection";
import Table from 'react-bootstrap/Table';
import {Redirect} from 'react-router';
import {withRouter} from "react-router-dom";
import {objectToQueryString} from "../utils";
class Connections extends Component {
constructor(props) {
super(props);
this.state = {
loading: false,
connections: [],
firstConnection: null,
lastConnection: null,
showHidden: false
};
this.scrollTopThreashold = 0.00001;
this.scrollBottomThreashold = 0.99999;
this.maxConnections = 500;
this.queryLimit = 50;
this.handleScroll = this.handleScroll.bind(this);
this.connectionSelected = this.connectionSelected.bind(this);
}
componentDidMount() {
this.loadConnections({limit: this.queryLimit, hidden: this.state.showHidden});
}
connectionSelected(c) {
this.setState({selected: c.id});
this.props.onSelected(c);
}
handleScroll(e) {
let relativeScroll = e.currentTarget.scrollTop / (e.currentTarget.scrollHeight - e.currentTarget.clientHeight);
if (!this.state.loading && relativeScroll > this.scrollBottomThreashold) {
this.loadConnections({
from: this.state.lastConnection.id, limit: this.queryLimit,
hidden: this.state.showHidden
});
}
if (!this.state.loading && relativeScroll < this.scrollTopThreashold) {
this.loadConnections({
to: this.state.firstConnection.id, limit: this.queryLimit,
hidden: this.state.showHidden
});
}
}
async loadConnections(params) {
let url = "/api/connections";
if (params !== undefined) {
url += "?" + objectToQueryString(params);
}
this.setState({loading: true});
let res = await axios.get(url);
let connections = this.state.connections;
let firstConnection = this.state.firstConnection;
let lastConnection = this.state.lastConnection;
if (res.data.length > 0) {
if (params !== undefined && params.from !== undefined) {
connections = this.state.connections.concat(res.data);
lastConnection = connections[connections.length - 1];
if (connections.length > this.maxConnections) {
connections = connections.slice(connections.length - this.maxConnections,
connections.length - 1);
firstConnection = connections[0];
}
} else if (params !== undefined && params.to !== undefined) {
connections = res.data.concat(this.state.connections);
firstConnection = connections[0];
if (connections.length > this.maxConnections) {
connections = connections.slice(0, this.maxConnections);
lastConnection = connections[this.maxConnections - 1];
}
} else {
connections = res.data;
firstConnection = connections[0];
lastConnection = connections[connections.length - 1];
}
}
this.setState({
loading: false,
connections: connections,
firstConnection: firstConnection,
lastConnection: lastConnection
});
}
render() {
let redirect = null;
if (this.state.selected) {
const format = this.props.match.params.format;
redirect = <Redirect push to={`/connections/${this.state.selected}${format !== undefined ? ("/" + format) : ""}`} />;
}
let loading = null;
if (this.state.loading) {
loading = <tr>
<td colSpan={9}>Loading...</td>
</tr>;
}
return (
<div className="connections" onScroll={this.handleScroll}>
<div className="connections-header-padding"/>
<Table borderless size="sm">
<thead>
<tr>
<th>service</th>
<th>srcip</th>
<th>dstip</th>
<th>srcport</th>
<th>dstport</th>
<th>duration</th>
<th>up</th>
<th>down</th>
<th>actions</th>
</tr>
</thead>
<tbody>
{
this.state.connections.map(c =>
<Connection key={c.id} data={c} onSelected={() => this.connectionSelected(c)}
selected={this.state.selected === c.id} onMarked={marked => c.marked = marked}
onEnabled={enabled => c.hidden = !enabled}/>
)
}
{loading}
</tbody>
</Table>
{redirect}
</div>
);
}
}
export default withRouter(Connections);
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