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import React, {Component} from 'react';
import './Timeline.scss';
import {
ChartContainer,
ChartRow,
Charts,
LineChart,
MultiBrush,
Resizable,
styler,
YAxis
} from "react-timeseries-charts";
import {TimeRange, TimeSeries} from "pondjs";
import backend from "../backend";
import ChoiceField from "../components/fields/ChoiceField";
import {withRouter} from "react-router-dom";
import log from "../log";
import dispatcher from "../dispatcher";
const minutes = 60 * 1000;
class Timeline extends Component {
state = {
metric: "connections_per_service"
};
constructor() {
super();
this.disableTimeSeriesChanges = false;
this.selectionTimeout = null;
}
filteredPort = () => {
const urlParams = new URLSearchParams(this.props.location.search);
return urlParams.get("service_port");
};
componentDidMount() {
const filteredPort = this.filteredPort();
this.setState({filteredPort});
this.loadStatistics(this.state.metric, filteredPort).then(() => log.debug("Statistics loaded after mount"));
dispatcher.register("connection_updates", payload => {
this.setState({
selection: new TimeRange(payload.from, payload.to),
});
});
dispatcher.register("notifications", payload => {
if (payload.event === "services.edit") {
this.loadServices().then(() => log.debug("Services reloaded after notification update"));
}
});
}
componentDidUpdate(prevProps, prevState, snapshot) {
const filteredPort = this.filteredPort();
if (this.state.filteredPort !== filteredPort) {
this.setState({filteredPort});
this.loadStatistics(this.state.metric, filteredPort).then(() =>
log.debug("Statistics reloaded after filtered port changes"));
}
}
loadStatistics = async (metric, filteredPort) => {
const urlParams = new URLSearchParams();
urlParams.set("metric", metric);
let services = await this.loadServices();
if (filteredPort && services[filteredPort]) {
const service = services[filteredPort];
services = {};
services[filteredPort] = service;
}
const ports = Object.keys(services);
ports.forEach(s => urlParams.append("ports", s));
const metrics = (await backend.get("/api/statistics?" + urlParams)).json;
const zeroFilledMetrics = [];
const toTime = m => new Date(m["range_start"]).getTime();
if (metrics.length > 0) {
let i = 0;
for (let interval = toTime(metrics[0]); interval <= toTime(metrics[metrics.length - 1]); interval += minutes) {
if (interval === toTime(metrics[i])) {
const m = metrics[i++];
m["range_start"] = new Date(m["range_start"]);
zeroFilledMetrics.push(m);
} else {
const m = {};
m["range_start"] = new Date(interval);
m[metric] = {};
ports.forEach(p => m[metric][p] = 0);
zeroFilledMetrics.push(m);
}
}
}
const series = new TimeSeries({
name: "statistics",
columns: ["time"].concat(ports),
points: zeroFilledMetrics.map(m => [m["range_start"]].concat(ports.map(p => m[metric][p] || 0)))
});
const start = series.range().begin();
const end = series.range().end();
start.setTime(start.getTime() - minutes);
end.setTime(end.getTime() + minutes);
this.setState({
metric,
series,
timeRange: new TimeRange(start, end),
start,
end
});
log.debug(`Loaded statistics for metric "${metric}" for services [${ports}]`);
};
loadServices = async () => {
const services = (await backend.get("/api/services")).json;
this.setState({services});
return services;
};
createStyler = () => {
return styler(Object.keys(this.state.services).map(port => {
return {key: port, color: this.state.services[port].color, width: 2};
}));
};
handleTimeRangeChange = (timeRange) => {
if (!this.disableTimeSeriesChanges) {
this.setState({timeRange});
}
};
handleSelectionChange = (timeRange) => {
this.disableTimeSeriesChanges = true;
this.setState({selection: timeRange});
if (this.selectionTimeout) {
clearTimeout(this.selectionTimeout);
}
this.selectionTimeout = setTimeout(() => {
dispatcher.dispatch("timeline_updates", {
from: timeRange.begin(),
to: timeRange.end()
});
this.selectionTimeout = null;
this.disableTimeSeriesChanges = false;
}, 1000);
};
aggregateSeries = (func) => {
const values = this.state.series.columns().map(c => this.state.series[func](c));
return Math[func](...values);
};
render() {
if (!this.state.series) {
return null;
}
return (
<footer className="footer">
<div className="time-line">
<Resizable>
<ChartContainer timeRange={this.state.timeRange} enableDragZoom={false}
paddingTop={5} minDuration={60000}
maxTime={this.state.end}
minTime={this.state.start}
paddingLeft={0} paddingRight={0} paddingBottom={0}
enablePanZoom={true} utc={false}
onTimeRangeChanged={this.handleTimeRangeChange}>
<ChartRow height="125">
<YAxis id="axis1" hideAxisLine
min={this.aggregateSeries("min")}
max={this.aggregateSeries("max")} width="35" type="linear" transition={300}/>
<Charts>
<LineChart axis="axis1" series={this.state.series}
columns={Object.keys(this.state.services)}
style={this.createStyler()} interpolation="curveBasis"/>
<MultiBrush
timeRanges={[this.state.selection]}
allowSelectionClear={false}
allowFreeDrawing={false}
onTimeRangeChanged={this.handleSelectionChange}
/>
</Charts>
</ChartRow>
</ChartContainer>
</Resizable>
<div className="metric-selection">
<ChoiceField inline small
keys={["connections_per_service", "client_bytes_per_service",
"server_bytes_per_service", "duration_per_service"]}
values={["connections_per_service", "client_bytes_per_service",
"server_bytes_per_service", "duration_per_service"]}
onChange={(metric) => this.loadStatistics(metric, this.state.filteredPort)
.then(() => log.debug("Statistics loaded after metric changes"))}
value={this.state.metric}/>
</div>
</div>
</footer>
);
}
}
export default withRouter(Timeline);
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