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@page "/Service/{ServiceName}/Manage"
@using LibSystemdCli.Models
@using LibSystemdCli
@using System.Text.RegularExpressions
@using ArcaneLibs.Extensions
@using SystemdCtl.Client.Abstractions
@using System.Diagnostics.Metrics
@using System.Text.Json
@using ArcaneLibs
@using SystemdCtl.Client.Pages.Graphs
@* @attribute [StreamRendering] *@
@rendermode InteractiveWebAssembly
@inject NavigationManager NavigationManager
<PageTitle>Manage @ServiceName</PageTitle>
<h1>Managing @ServiceName (@ServiceInfo?.Status)</h1>
<div class="row">
<div class="col-12">
<h3>Actions</h3>
<div class="card">
<div class="card-body">
@if (ServiceInfo.IsRunning) {
<LinkButton OnClick="@Stop">Stop</LinkButton>
<LinkButton OnClick="@Restart">Restart</LinkButton>
<LinkButton OnClick="@Kill">Kill</LinkButton>
}
else {
<LinkButton OnClick="@Start">Start</LinkButton>
}
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-12">
<h3>Statistics</h3>
<div class="card">
<div class="card-body">
<p>CPU usage: @ServiceInfo?.CpuUsagePercent.ToString("P2")</p>
<TimelineGraph Data="@CpuUsageHistory" Height="50" Width="500" MinValue="0" ValueFormatter="@(value => value.ToString("P2"))"/>
<p>Memory usage: @Util.SI_BytesToString(ServiceInfo?.MemoryCurrent ?? 0) (peak: @Util.SI_BytesToString(ServiceInfo?.MemoryPeak ?? 0))</p>
<TimelineGraph Data="@MemoryUsageHistory" Height="50" Width="500" ValueFormatter="@(value => Util.SI_BytesToString((long)value))"/>
</div>
</div>
</div>
</div>
@* //simple log view *@
<div class="row">
<div class="col-12">
<h3>Logs</h3>
<div class="card">
<div class="card-body">
<pre>
<table class="table table-sm table-striped">
@foreach (var line in LogLines) {
<tr>
<td>@line.Exe.Split('/').Last()</td>
<td>@line.Message</td>
</tr>
}
</table>
</pre>
</div>
</div>
</div>
</div>
@code {
[Parameter]
public string ServiceName { get; set; } = "";
private static bool IsClient => !Environment.CommandLine.Contains("/");
private List<SystemdJournalLogItem> LogLines { get; set; } = new();
private SystemdServiceData? ServiceInfo { get; set; } = new();
protected override async Task OnInitializedAsync() {
Console.WriteLine("OnInitializedAsync");
await Run();
}
private async Task Run() {
if (!IsClient) return;
GetServiceDataTask();
GetLogs();
}
private JsonSerializerOptions jso = new() {
DefaultBufferSize = 1,
AllowTrailingCommas = true
};
private async Task GetLogs() {
int history = 100;
var Http = new StreamingHttpClient() { BaseAddress = new Uri(NavigationManager.BaseUri) };
LogLines.Clear();
var _items = Http.GetAsyncEnumerableFromJsonAsync<SystemdJournalLogItem>($"/api/unit/{ServiceName}/logs?contextLines={history}", jso);
await foreach (var item in _items) {
LogLines.Add(item);
if (LogLines.Count > history) {
LogLines.RemoveAt(0);
}
StateHasChanged();
}
}
private async Task GetServiceDataTask() {
if (!IsClient) return;
var Http = new StreamingHttpClient() { BaseAddress = new Uri(NavigationManager.BaseUri) };
var stream = Http.GetAsyncEnumerableFromJsonAsync<SystemdServiceData>($"/api/unit/{ServiceName}/dataStream", jso);
await foreach (var item in stream) {
ServiceInfo = item;
CpuUsageHistory.Add(ServiceInfo.Timestamp, ServiceInfo.CpuUsagePercent);
MemoryUsageHistory.Add(ServiceInfo.Timestamp, ServiceInfo.MemoryCurrent);
CpuUsageHistory = CpuUsageHistory.Where((x, y) => x.Key > DateTime.Now.AddMinutes(-1))
.OrderBy(x => x.Key).ToDictionary();
MemoryUsageHistory = MemoryUsageHistory.Where((x, y) => x.Key > DateTime.Now.AddMinutes(-1)).OrderBy(x => x.Key).ToDictionary();
StateHasChanged();
}
}
private string Capitalize(string input) {
return input switch {
null => throw new ArgumentNullException(nameof(input)),
"" => throw new ArgumentException($"{nameof(input)} cannot be empty", nameof(input)),
_ => input.First().ToString().ToUpper() + input[1..]
};
}
private async Task Start() {
var Http = new StreamingHttpClient() { BaseAddress = new Uri(NavigationManager.BaseUri) };
await Http.GetAsync($"/api/unit/{ServiceName}/start", null);
}
private async Task Stop() {
var Http = new StreamingHttpClient() { BaseAddress = new Uri(NavigationManager.BaseUri) };
await Http.GetAsync($"/api/unit/{ServiceName}/stop", null);
}
private async Task Restart() {
var Http = new StreamingHttpClient() { BaseAddress = new Uri(NavigationManager.BaseUri) };
await Http.GetAsync($"/api/unit/{ServiceName}/restart", null);
}
private async Task Kill() {
var Http = new StreamingHttpClient() { BaseAddress = new Uri(NavigationManager.BaseUri) };
await Http.GetAsync($"/api/unit/{ServiceName}/kill", null);
}
public Dictionary<DateTime, double> CpuUsageHistory { get; set; } = [];
public Dictionary<DateTime, double> MemoryUsageHistory { get; set; } = [];
}
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