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template.go
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package cronv
import (
"fmt"
"strings"
"text/template"
"time"
)
const TEMPLATE = `
<html>
<head>
<title>{{.Opts.Title}} | {{DateFormat .TimeFrom "2006/1/2 15:04"}}, +{{.Opts.Duration}}</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
</head>
<body>
<div class="container-fluid">
<h1>
{{.Opts.Title}} <small class="text-muted">From {{DateFormat .TimeFrom "2006/1/2 15:04"}}, +{{.Opts.Duration}}</small>
</h1>
<br>
{{if .Extras}}
<h3>Extra</h3>
<div id="cronv-extra" style="width:{{.Opts.Width}}%;">
<dl class="row">
{{range $index, $extra := .Extras}}
<dt class="col-sm-1">{{$extra.Label}}</dt>
<dd class="col-sm-11">{{$extra.Job}}</dd>
{{end}}
</dl>
</div>
<hr>
{{end}}
<h3>Timeline</h3>
<div id="cronv-timeline" style="height:100%; width:{{.Opts.Width}}%;">
<b>Loading...</b>
</div>
</div>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["timeline"]});
google.charts.setOnLoadCallback(function() {
var container = document.getElementById('cronv-timeline');
var chart = new google.visualization.Timeline(container);
var dataTable = new google.visualization.DataTable();
dataTable.addColumn({ type: 'string', id: 'job' });
dataTable.addColumn({ type: 'string', id: 'dummy bar label' });
dataTable.addColumn({ type: 'string', role: 'tooltip' });
dataTable.addColumn({ type: 'date', id: 'Start' });
dataTable.addColumn({ type: 'date', id: 'End' });
var tasks = {};
{{ $timeFrom := .TimeFrom }}
{{ $timeTo := .TimeTo }}
{{range $index, $cronv := .CronEntries}}
{{ $job := JSEscapeString $cronv.Crontab.Job }}
tasks['{{$job}}'] = tasks['{{$job}}'] || [];
{{if IsRunningEveryMinutes $cronv.Crontab }}
tasks['{{$job}}'].push(['{{$job}}', '', 'Every minutes {{$job}}', {{NewJsDate $timeFrom}}, {{NewJsDate $timeTo}}]);
{{else}}
{{range CronvIter $cronv}}tasks['{{$job}}'].push(['{{$job}}', '', '{{DateFormat .Start "15:04"}} {{$job}}', {{NewJsDate .Start}}, {{NewJsDate .End}}]);{{end}}
{{ end }}
{{end}}
var taskByJobCount = [];
for (var k in tasks) taskByJobCount.push({name: k, size: tasks[k].length});
taskByJobCount.sort(function(a, b) {
if (a.size == b.size) return 0;
return a.size > b.size ? -1 : 1;
});
var rows = [];
for (var i = 0; i < taskByJobCount.length; i++) {
jobs = tasks[taskByJobCount[i].name];
var jl = jobs.length;
for (var j = 0; j < jl; j++) rows.push(jobs[j]);
}
if (rows.length > 0) {
dataTable.addRows(rows);
chart.draw(dataTable, {
timeline: {
colorByRowLabel: true
},
avoidOverlappingGridLines: false
});
} else {
container.innerHTML = '<div class="alert alert-success"><strong>Woops!</strong> There is no data!</div>';
}
var mousePosX = undefined,
mousePosY = undefined;
google.visualization.events.addListener(chart, 'onmouseover', function(e) {
var t = document.getElementsByClassName("google-visualization-tooltip")[0];
if (mousePosX) t.style.left = mousePosX + 'px';
if (mousePosY) t.style.top = mousePosY - 120 + 'px';
});
document.addEventListener('mousemove', function(e) {
mousePosX = e.pageX;
mousePosY = e.pageY;
});
});
</script>
</body>
</html>
`
func makeTemplate() *template.Template {
funcMap := template.FuncMap{
"CronvIter": func(cronv *Record) <-chan *Exec {
return cronv.iter()
},
"JSEscapeString": func(v string) string {
return template.JSEscapeString(strings.TrimSpace(v))
},
"NewJsDate": func(v time.Time) string {
return fmt.Sprintf("new Date(%d,%d,%d,%d,%d)", v.Year(), v.Month()-1, v.Day(), v.Hour(), v.Minute())
},
"DateFormat": func(v time.Time, format string) string {
return v.Format(format)
},
"IsRunningEveryMinutes": func(c *Crontab) bool {
return c.isRunningEveryMinutes()
},
}
return template.Must(template.New("").Funcs(funcMap).Parse(TEMPLATE))
}