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Minecraft-Phantom-Panel/Server/Phantom.Server.Web/Pages/InstanceCreate.razor

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@page "/instances/create"
@using Phantom.Server.Web.Components.Utils
@using Phantom.Server.Services.Instances
@using Phantom.Server.Services.Agents
@using System.Collections.Immutable
@using System.ComponentModel.DataAnnotations
@using System.Diagnostics.CodeAnalysis
@using Phantom.Common.Data.Java
@using Phantom.Common.Data.Minecraft
@using Phantom.Common.Data
@using Phantom.Common.Data.Instance
@inject NavigationManager Nav
@inject AgentJavaRuntimesManager AgentJavaRuntimesManager
@inject AgentStatsManager AgentStatsManager
@inject InstanceManager InstanceManager
<h1>New Instance</h1>
<EditForm EditContext="editContext" OnSubmit="Submit">
<DataAnnotationsValidator />
<div class="row">
<div class="col-xl-7 mb-3">
<FormSelectInput Id="instance-agent" Label="Agent" @bind-Value="form.SelectedAgentGuid">
<option value="" selected>Select which agent will run the instance...</option>
@foreach (var (agent, usedInstances, usedMemory) in form.AgentsByGuid.Values.OrderBy(static item => item.Agent.Name)) {
<option value="@agent.Guid">
@agent.Name
&bullet;
@(usedInstances)/@(agent.MaxInstances) @(agent.MaxInstances == 1 ? "Instance" : "Instances")
&bullet;
@(usedMemory.InMegabytes)/@(agent.MaxMemory.InMegabytes) MB RAM
</option>
}
</FormSelectInput>
</div>
<div class="col-xl-5 mb-3">
<FormTextInput Id="instance-name" Label="Instance Name" @bind-Value="form.InstanceName" />
</div>
</div>
<div class="row">
<div class="col-xl-4 mb-3">
<FormSelectInput Id="instance-server-kind" Label="Server Software" @bind-Value="form.MinecraftServerKind">
@foreach (var kind in Enum.GetValues<MinecraftServerKind>()) {
<option value="@kind">@kind</option>
}
</FormSelectInput>
</div>
<div class="col-xl-4 mb-3">
<FormSelectInput Id="instance-java-runtime" Label="Java Runtime" @bind-Value="form.JavaRuntimeGuid" disabled="@(form.JavaRuntimesForSelectedAgent.IsEmpty)">
<option value="" selected>Select Java runtime...</option>
@foreach (var (guid, runtime) in form.JavaRuntimesForSelectedAgent) {
<option value="@guid">@runtime.DisplayName</option>
}
</FormSelectInput>
</div>
@{
var selectedAgent = form.SelectedAgent;
string? allowedServerPorts = selectedAgent?.Agent.AllowedServerPorts?.ToString();
string? allowedRconPorts = selectedAgent?.Agent.AllowedRconPorts?.ToString();
RenderFragment serverPortLabel;
RenderFragment rconPortLabel;
if (string.IsNullOrEmpty(allowedServerPorts)) {
serverPortLabel = @<text>Server Port</text>;
}
else {
serverPortLabel = @<text>Server Port <sup title="Allowed: @allowedServerPorts">[?]</sup></text>;
}
if (string.IsNullOrEmpty(allowedRconPorts)) {
rconPortLabel = @<text>Rcon Port</text>;
}
else {
rconPortLabel = @<text>Rcon Port <sup title="Allowed: @allowedRconPorts">[?]</sup></text>;
}
}
<div class="col-xl-2 mb-3">
<FormNumberInput Id="instance-server-port" LabelFragment="@serverPortLabel" @bind-Value="form.ServerPort" min="0" max="65535" />
</div>
<div class="col-xl-2 mb-3">
<FormNumberInput Id="instance-rcon-port" LabelFragment="@rconPortLabel" @bind-Value="form.RconPort" min="0" max="65535" />
</div>
</div>
<div class="row">
<div class="col-xl-12 mb-3">
@{
ushort maximumMemoryUnits = form.MaximumMemoryUnits;
RenderFragment label;
if (maximumMemoryUnits == 0) {
label = @<text>RAM</text>;
}
else {
label = @<text>RAM &bullet; <code>@(form.MemoryAllocation?.InMegabytes ?? 0) / @(selectedAgent?.AvailableMemory.InMegabytes) MB</code></text>;
}
}
<FormNumberInput Id="instance-memory" LabelFragment="@label" Type="FormNumberInputType.Range" DebounceMillis="0" DisableTwoWayBinding="true" @bind-Value="form.MemoryUnits" min="2" max="@maximumMemoryUnits" disabled="@(maximumMemoryUnits == 0)" />
</div>
</div>
<FormButtonSubmit Label="Create Instance" Model="@submitModel" class="btn btn-primary" disabled="@(!IsSubmittable)" />
</EditForm>
@code {
private FormModel form = null!;
private EditContext editContext = null!;
private readonly FormButtonSubmit.SubmitModel submitModel = new();
private bool IsSubmittable => form.SelectedAgentGuid != null && !editContext.GetValidationMessages(editContext.Field(nameof(FormModel.SelectedAgentGuid))).Any();
private readonly Guid instanceGuid = Guid.NewGuid();
private sealed class FormModel {
public ImmutableDictionary<Guid, AgentStats> AgentsByGuid { get; }
private readonly ImmutableDictionary<Guid, ImmutableArray<TaggedJavaRuntime>> javaRuntimesByAgentGuid;
public FormModel(AgentJavaRuntimesManager agentJavaRuntimesManager, AgentStatsManager agentStatsManager) {
AgentsByGuid = agentStatsManager.GetOnlineAgentStats();
javaRuntimesByAgentGuid = agentJavaRuntimesManager.All;
}
private bool TryGet<TValue>(ImmutableDictionary<Guid, TValue> dictionary, Guid? agentGuid, [MaybeNullWhen(false)] out TValue value) {
if (agentGuid == null) {
value = default;
return false;
}
else {
return dictionary.TryGetValue(agentGuid.Value, out value);
}
}
private bool TryGetAgent(Guid? agentGuid, [NotNullWhen(true)] out AgentStats? stats) {
return TryGet(AgentsByGuid, agentGuid, out stats);
}
public AgentStats? SelectedAgent => TryGetAgent(SelectedAgentGuid, out var agentStats) ? agentStats : null;
public ImmutableArray<TaggedJavaRuntime> JavaRuntimesForSelectedAgent => TryGet(javaRuntimesByAgentGuid, SelectedAgentGuid, out var javaRuntimes) ? javaRuntimes : ImmutableArray<TaggedJavaRuntime>.Empty;
public ushort MaximumMemoryUnits => SelectedAgent?.AvailableMemory.RawValue ?? 0;
private ushort selectedMemoryUnits = 4;
[Required(ErrorMessage = "You must select an agent.")]
[AgentHasInstances(ErrorMessage = "This agent has no remaining instances.")]
[AgentHasMemory(ErrorMessage = "This agent has no remaining RAM.")]
public Guid? SelectedAgentGuid { get; set; } = null;
[Required(ErrorMessage = "Instance name is required.")]
[StringLength(100, ErrorMessage = "Instance name must be at most 100 characters.")]
public string InstanceName { get; set; } = string.Empty;
[Range(minimum: 0, maximum: 65535, ErrorMessage = "Server port must be between 0 and 65535.")]
[ServerPortMustBeAllowed(ErrorMessage = "Server port is not allowed.")]
public int ServerPort { get; set; } = 25565;
[Range(minimum: 0, maximum: 65535, ErrorMessage = "Rcon port must be between 0 and 65535.")]
[RconPortMustBeAllowed(ErrorMessage = "Rcon port is not allowed.")]
[RconPortMustDifferFromServerPort(ErrorMessage = "Rcon port must not be the same as Server port.")]
public int RconPort { get; set; } = 25575;
public MinecraftServerKind MinecraftServerKind { get; set; } = MinecraftServerKind.Vanilla;
[Required(ErrorMessage = "You must select a Java runtime.")]
public Guid? JavaRuntimeGuid { get; set; }
public string MinecraftVersion { get; set; } = "1.19";
[Range(minimum: 0, maximum: RamAllocationUnits.MaximumUnits, ErrorMessage = "Memory is out of range.")]
public ushort MemoryUnits {
get => Math.Min(selectedMemoryUnits, MaximumMemoryUnits);
set => selectedMemoryUnits = value;
}
public RamAllocationUnits? MemoryAllocation => new RamAllocationUnits(MemoryUnits);
public sealed class AgentHasInstancesAttribute : FormValidationAttribute {
protected override string FieldName => nameof(SelectedAgentGuid);
protected override bool IsValid(object model, object? value) => M(model).TryGetAgent((Guid?) value, out var agent) && agent.UsedInstances < agent.Agent.MaxInstances;
}
public sealed class AgentHasMemoryAttribute : FormValidationAttribute {
protected override string FieldName => nameof(SelectedAgentGuid);
protected override bool IsValid(object model, object? value) => M(model).TryGetAgent((Guid?) value, out var agent) && agent.AvailableMemory > RamAllocationUnits.Zero;
}
public sealed class ServerPortMustBeAllowed : FormValidationAttribute {
protected override string FieldName => nameof(ServerPort);
protected override bool IsValid(object model, object? value) => value is not int port || M(model).SelectedAgent is not {} agent || agent.Agent.AllowedServerPorts?.Contains((ushort) port) == true;
}
public sealed class RconPortMustBeAllowed : FormValidationAttribute {
protected override string FieldName => nameof(RconPort);
protected override bool IsValid(object model, object? value) => value is not int port || M(model).SelectedAgent is not {} agent || agent.Agent.AllowedRconPorts?.Contains((ushort) port) == true;
}
public sealed class RconPortMustDifferFromServerPort : FormValidationAttribute {
protected override string FieldName => nameof(RconPort);
protected override bool IsValid(object model, object? value) => (int?) value != M(model).ServerPort;
}
private static FormModel M(object model) {
return (FormModel) model;
}
}
protected override void OnInitialized() {
form = new FormModel(AgentJavaRuntimesManager, AgentStatsManager);
editContext = BootstrapEditContext.Create(form);
editContext.RevalidateWhenFieldChanges(tracked: nameof(FormModel.SelectedAgentGuid), revalidated: nameof(FormModel.MemoryUnits));
editContext.RevalidateWhenFieldChanges(tracked: nameof(FormModel.SelectedAgentGuid), revalidated: nameof(FormModel.JavaRuntimeGuid));
editContext.RevalidateWhenFieldChanges(tracked: nameof(FormModel.SelectedAgentGuid), revalidated: nameof(FormModel.ServerPort));
editContext.RevalidateWhenFieldChanges(tracked: nameof(FormModel.SelectedAgentGuid), revalidated: nameof(FormModel.RconPort));
editContext.RevalidateWhenFieldChanges(tracked: nameof(FormModel.ServerPort), revalidated: nameof(FormModel.RconPort));
}
private async Task Submit(EditContext context) {
if (!context.Validate()) {
return;
}
var selectedAgent = form.SelectedAgent;
if (selectedAgent == null) {
return;
}
submitModel.StartSubmitting();
await Task.Yield();
var serverPort = (ushort) form.ServerPort;
var rconPort = (ushort) form.RconPort;
var memoryAllocation = form.MemoryAllocation ?? RamAllocationUnits.Zero;
var javaRuntimeGuid = form.JavaRuntimeGuid.GetValueOrDefault();
var instance = new InstanceConfiguration(selectedAgent.Agent.Guid, instanceGuid, form.InstanceName, serverPort, rconPort, form.MinecraftVersion, form.MinecraftServerKind, memoryAllocation, javaRuntimeGuid, LaunchAutomatically: false);
var result = await InstanceManager.AddInstance(instance);
if (result == AddInstanceResult.Success) {
Nav.NavigateTo("/instances/" + instance.InstanceGuid);
}
else {
submitModel.StopSubmitting(result.ToSentence());
}
}
}