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Fixed event/observer issues

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This commit is contained in:
ChiaraBm
2025-07-30 17:12:21 +02:00
parent bb81ca9674
commit eaf8c36f7f
8 changed files with 113 additions and 87 deletions
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2
MoonlightServers.Daemon/MoonlightServers.Daemon.csproj
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@@ -9,7 +9,7 @@
<ItemGroup>
<PackageReference Include="Docker.DotNet" Version="3.125.15" />
<PackageReference Include="Microsoft.AspNetCore.SignalR" Version="1.2.0" />
<PackageReference Include="MoonCore" Version="1.9.3" />
<PackageReference Include="MoonCore" Version="1.9.4" />
<PackageReference Include="MoonCore.Extended" Version="1.3.6" />
<PackageReference Include="MoonCore.Unix" Version="1.0.8" />
<PackageReference Include="SharpZipLib" Version="1.4.2" />

103
MoonlightServers.Daemon/ServerSys/Abstractions/Server.cs
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@@ -1,6 +1,6 @@
using System.Reactive.Linq;
using System.Reactive.Subjects;
using MoonCore.Observability;
using MoonlightServers.Daemon.Extensions;
using MoonlightServers.Daemon.Helpers;
using MoonlightServers.Daemon.ServerSystem;
using Stateless;
@@ -8,19 +8,19 @@ namespace MoonlightServers.Daemon.ServerSys.Abstractions;
public class Server : IAsyncDisposable
{
public IConsole Console { get; private set; }
public IFileSystem FileSystem { get; private set; }
public IInstaller Installer { get; private set; }
public IProvisioner Provisioner { get; private set; }
public IRestorer Restorer { get; private set; }
public IStatistics Statistics { get; private set; }
public IConsole Console { get; }
public IFileSystem FileSystem { get; }
public IInstaller Installer { get; }
public IProvisioner Provisioner { get; }
public IRestorer Restorer { get; }
public IStatistics Statistics { get; }
public StateMachine<ServerState, ServerTrigger> StateMachine { get; private set; }
public ServerContext Context { get; private set; }
public IAsyncObservable<ServerState> OnState => OnStateSubject.ToAsyncObservable();
public ServerContext Context { get; }
public IAsyncObservable<ServerState> OnState => OnStateSubject;
private readonly Subject<ServerState> OnStateSubject = new();
private readonly EventSubject<ServerState> OnStateSubject = new();
private readonly ILogger<Server> Logger;
private IAsyncDisposable? ProvisionExitSubscription;
private IAsyncDisposable? InstallerExitSubscription;
@@ -80,22 +80,22 @@ public class Server : IAsyncDisposable
CreateStateMachine(restoredState);
// Setup event handling
ProvisionExitSubscription = await Provisioner.OnExited.SubscribeAsync(async o =>
{
await StateMachine.FireAsync(ServerTrigger.Exited);
});
ProvisionExitSubscription = await Provisioner.OnExited.SubscribeEventAsync(async _ =>
await StateMachine.FireAsync(ServerTrigger.Exited)
);
InstallerExitSubscription = await Installer.OnExited.SubscribeAsync(async o =>
{
await StateMachine.FireAsync(ServerTrigger.Exited);
});
InstallerExitSubscription = await Installer.OnExited.SubscribeEventAsync(async _ =>
await StateMachine.FireAsync(ServerTrigger.Exited)
);
}
private void CreateStateMachine(ServerState initialState)
{
StateMachine = new StateMachine<ServerState, ServerTrigger>(initialState, FiringMode.Queued);
StateMachine.OnTransitioned(transition => OnStateSubject.OnNext(transition.Destination));
StateMachine.OnTransitionedAsync(async transition
=> await OnStateSubject.OnNextAsync(transition.Destination)
);
// Configure basic state machine flow
@@ -134,7 +134,7 @@ public class Server : IAsyncDisposable
StateMachine.Configure(ServerState.Installing)
.OnEntryAsync(HandleInstall)
.OnExitFromAsync(ServerTrigger.Exited, HandleInstallExit);
StateMachine.Configure(ServerState.Online)
.OnExitFromAsync(ServerTrigger.Exited, HandleRuntimeExit);
@@ -187,9 +187,12 @@ public class Server : IAsyncDisposable
catch (Exception e)
{
Logger.LogError(e, "An error occured while starting the server");
await Console.WriteToMoonlight("Failed to start the server. More details can be found in the daemon logs");
await StateMachine.FireAsync(ServerTrigger.FailSafe);
}
}
private async Task HandleStop()
{
await Provisioner.Stop();
@@ -199,41 +202,51 @@ public class Server : IAsyncDisposable
{
Logger.LogDebug("Deprovisioning");
await Console.WriteToMoonlight("Deprovisioning");
await Provisioner.Deprovision();
}
private async Task HandleInstall()
{
Logger.LogDebug("Installing");
Logger.LogDebug("Setting up");
await Console.WriteToMoonlight("Setting up installation");
// TODO: Extract to service
Context.InstallConfiguration = new()
try
{
Shell = "/bin/ash",
DockerImage = "ghcr.io/parkervcp/installers:alpine",
Script =
"#!/bin/ash\n# Paper Installation Script\n#\n# Server Files: /mnt/server\nPROJECT=paper\n\nif [ -n \"${DL_PATH}\" ]; then\n\techo -e \"Using supplied download url: ${DL_PATH}\"\n\tDOWNLOAD_URL=`eval echo $(echo ${DL_PATH} | sed -e 's/{{/${/g' -e 's/}}/}/g')`\nelse\n\tVER_EXISTS=`curl -s https://api.papermc.io/v2/projects/${PROJECT} | jq -r --arg VERSION $MINECRAFT_VERSION '.versions[] | contains($VERSION)' | grep -m1 true`\n\tLATEST_VERSION=`curl -s https://api.papermc.io/v2/projects/${PROJECT} | jq -r '.versions' | jq -r '.[-1]'`\n\n\tif [ \"${VER_EXISTS}\" == \"true\" ]; then\n\t\techo -e \"Version is valid. Using version ${MINECRAFT_VERSION}\"\n\telse\n\t\techo -e \"Specified version not found. Defaulting to the latest ${PROJECT} version\"\n\t\tMINECRAFT_VERSION=${LATEST_VERSION}\n\tfi\n\n\tBUILD_EXISTS=`curl -s https://api.papermc.io/v2/projects/${PROJECT}/versions/${MINECRAFT_VERSION} | jq -r --arg BUILD ${BUILD_NUMBER} '.builds[] | tostring | contains($BUILD)' | grep -m1 true`\n\tLATEST_BUILD=`curl -s https://api.papermc.io/v2/projects/${PROJECT}/versions/${MINECRAFT_VERSION} | jq -r '.builds' | jq -r '.[-1]'`\n\n\tif [ \"${BUILD_EXISTS}\" == \"true\" ]; then\n\t\techo -e \"Build is valid for version ${MINECRAFT_VERSION}. Using build ${BUILD_NUMBER}\"\n\telse\n\t\techo -e \"Using the latest ${PROJECT} build for version ${MINECRAFT_VERSION}\"\n\t\tBUILD_NUMBER=${LATEST_BUILD}\n\tfi\n\n\tJAR_NAME=${PROJECT}-${MINECRAFT_VERSION}-${BUILD_NUMBER}.jar\n\n\techo \"Version being downloaded\"\n\techo -e \"MC Version: ${MINECRAFT_VERSION}\"\n\techo -e \"Build: ${BUILD_NUMBER}\"\n\techo -e \"JAR Name of Build: ${JAR_NAME}\"\n\tDOWNLOAD_URL=https://api.papermc.io/v2/projects/${PROJECT}/versions/${MINECRAFT_VERSION}/builds/${BUILD_NUMBER}/downloads/${JAR_NAME}\nfi\n\ncd /mnt/server\n\necho -e \"Running curl -o ${SERVER_JARFILE} ${DOWNLOAD_URL}\"\n\nif [ -f ${SERVER_JARFILE} ]; then\n\tmv ${SERVER_JARFILE} ${SERVER_JARFILE}.old\nfi\n\ncurl -o ${SERVER_JARFILE} ${DOWNLOAD_URL}\n\nif [ ! -f server.properties ]; then\n echo -e \"Downloading MC server.properties\"\n curl -o server.properties https://raw.githubusercontent.com/parkervcp/eggs/master/minecraft/java/server.properties\nfi"
};
await Installer.Setup();
Logger.LogDebug("Installing");
await Console.AttachToInstallation();
Logger.LogDebug("Setting up");
await Console.WriteToMoonlight("Setting up installation");
await Installer.Start();
// TODO: Extract to service
Context.InstallConfiguration = new()
{
Shell = "/bin/ash",
DockerImage = "ghcr.io/parkervcp/installers:alpine",
Script =
"#!/bin/ash\n# Paper Installation Script\n#\n# Server Files: /mnt/server\nPROJECT=paper\n\nif [ -n \"${DL_PATH}\" ]; then\n\techo -e \"Using supplied download url: ${DL_PATH}\"\n\tDOWNLOAD_URL=`eval echo $(echo ${DL_PATH} | sed -e 's/{{/${/g' -e 's/}}/}/g')`\nelse\n\tVER_EXISTS=`curl -s https://api.papermc.io/v2/projects/${PROJECT} | jq -r --arg VERSION $MINECRAFT_VERSION '.versions[] | contains($VERSION)' | grep -m1 true`\n\tLATEST_VERSION=`curl -s https://api.papermc.io/v2/projects/${PROJECT} | jq -r '.versions' | jq -r '.[-1]'`\n\n\tif [ \"${VER_EXISTS}\" == \"true\" ]; then\n\t\techo -e \"Version is valid. Using version ${MINECRAFT_VERSION}\"\n\telse\n\t\techo -e \"Specified version not found. Defaulting to the latest ${PROJECT} version\"\n\t\tMINECRAFT_VERSION=${LATEST_VERSION}\n\tfi\n\n\tBUILD_EXISTS=`curl -s https://api.papermc.io/v2/projects/${PROJECT}/versions/${MINECRAFT_VERSION} | jq -r --arg BUILD ${BUILD_NUMBER} '.builds[] | tostring | contains($BUILD)' | grep -m1 true`\n\tLATEST_BUILD=`curl -s https://api.papermc.io/v2/projects/${PROJECT}/versions/${MINECRAFT_VERSION} | jq -r '.builds' | jq -r '.[-1]'`\n\n\tif [ \"${BUILD_EXISTS}\" == \"true\" ]; then\n\t\techo -e \"Build is valid for version ${MINECRAFT_VERSION}. Using build ${BUILD_NUMBER}\"\n\telse\n\t\techo -e \"Using the latest ${PROJECT} build for version ${MINECRAFT_VERSION}\"\n\t\tBUILD_NUMBER=${LATEST_BUILD}\n\tfi\n\n\tJAR_NAME=${PROJECT}-${MINECRAFT_VERSION}-${BUILD_NUMBER}.jar\n\n\techo \"Version being downloaded\"\n\techo -e \"MC Version: ${MINECRAFT_VERSION}\"\n\techo -e \"Build: ${BUILD_NUMBER}\"\n\techo -e \"JAR Name of Build: ${JAR_NAME}\"\n\tDOWNLOAD_URL=https://api.papermc.io/v2/projects/${PROJECT}/versions/${MINECRAFT_VERSION}/builds/${BUILD_NUMBER}/downloads/${JAR_NAME}\nfi\n\ncd /mnt/server\n\necho -e \"Running curl -o ${SERVER_JARFILE} ${DOWNLOAD_URL}\"\n\nif [ -f ${SERVER_JARFILE} ]; then\n\tmv ${SERVER_JARFILE} ${SERVER_JARFILE}.old\nfi\n\ncurl -o ${SERVER_JARFILE} ${DOWNLOAD_URL}\n\nif [ ! -f server.properties ]; then\n echo -e \"Downloading MC server.properties\"\n curl -o server.properties https://raw.githubusercontent.com/parkervcp/eggs/master/minecraft/java/server.properties\nfi"
};
await Installer.Setup();
await Console.AttachToInstallation();
await Installer.Start();
}
catch (Exception e)
{
Logger.LogError(e, "An error occured while starting installation");
await Console.WriteToMoonlight("An error occured while starting installation");
await StateMachine.FireAsync(ServerTrigger.FailSafe);
}
}
private async Task HandleInstallExit()
{
Logger.LogDebug("Installation done");
await Console.WriteToMoonlight("Cleaning up");
await Installer.Cleanup();
await Console.WriteToMoonlight("Installation completed");
}

17
MoonlightServers.Daemon/ServerSys/Implementations/DockerConsole.cs
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@@ -4,17 +4,19 @@ using System.Text;
using Docker.DotNet;
using Docker.DotNet.Models;
using MoonCore.Helpers;
using MoonCore.Observability;
using MoonlightServers.Daemon.Helpers;
using MoonlightServers.Daemon.ServerSys.Abstractions;
namespace MoonlightServers.Daemon.ServerSys.Implementations;
public class DockerConsole : IConsole
{
public IAsyncObservable<string> OnOutput => OnOutputSubject.ToAsyncObservable();
public IAsyncObservable<string> OnInput => OnInputSubject.ToAsyncObservable();
public IAsyncObservable<string> OnOutput => OnOutputSubject;
public IAsyncObservable<string> OnInput => OnInputSubject;
private readonly Subject<string> OnOutputSubject = new();
private readonly Subject<string> OnInputSubject = new();
private readonly EventSubject<string> OnOutputSubject = new();
private readonly EventSubject<string> OnInputSubject = new();
private readonly ConcurrentList<string> OutputCache = new();
private readonly DockerClient DockerClient;
@@ -140,15 +142,14 @@ public class DockerConsole : IConsole
return Task.CompletedTask;
}
public Task WriteToOutput(string content)
public async Task WriteToOutput(string content)
{
OutputCache.Add(content);
if (OutputCache.Count > 250) // TODO: Config
OutputCache.RemoveRange(0, 100);
OnOutputSubject.OnNext(content);
return Task.CompletedTask;
await OnOutputSubject.OnNextAsync(content);
}
public async Task WriteToInput(string content)
@@ -164,6 +165,8 @@ public class DockerConsole : IConsole
contentBuffer.Length,
Cts.Token
);
await OnInputSubject.OnNextAsync(content);
}
public async Task WriteToMoonlight(string content)

19
MoonlightServers.Daemon/ServerSys/Implementations/DockerInstaller.cs
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@@ -2,7 +2,10 @@ using System.Reactive.Linq;
using System.Reactive.Subjects;
using Docker.DotNet;
using Docker.DotNet.Models;
using MoonCore.Observability;
using MoonlightServers.Daemon.Configuration;
using MoonlightServers.Daemon.Extensions;
using MoonlightServers.Daemon.Helpers;
using MoonlightServers.Daemon.Mappers;
using MoonlightServers.Daemon.ServerSys.Abstractions;
using MoonlightServers.Daemon.Services;
@@ -11,10 +14,10 @@ namespace MoonlightServers.Daemon.ServerSys.Implementations;
public class DockerInstaller : IInstaller
{
public IAsyncObservable<object> OnExited => OnExitedSubject.ToAsyncObservable();
public IAsyncObservable<object> OnExited => OnExitedSubject;
public bool IsRunning { get; private set; } = false;
private readonly Subject<Message> OnExitedSubject = new();
private readonly EventSubject<Message> OnExitedSubject = new();
private readonly ILogger<DockerInstaller> Logger;
private readonly DockerEventService EventService;
@@ -64,7 +67,7 @@ public class DockerInstaller : IInstaller
ContainerEventSubscription = await EventService
.OnContainerEvent
.SubscribeAsync(HandleContainerEvent);
.SubscribeEventAsync(HandleContainerEvent);
// Check for any already existing runtime container to reclaim
Logger.LogDebug("Searching for orphan container to reclaim");
@@ -82,19 +85,17 @@ public class DockerInstaller : IInstaller
}
}
private ValueTask HandleContainerEvent(Message message)
private async ValueTask HandleContainerEvent(Message message)
{
// Only handle events for our own container
if (message.ID != ContainerId)
return ValueTask.CompletedTask;
return;
// Only handle die events
if (message.Action != "die")
return ValueTask.CompletedTask;
return;
OnExitedSubject.OnNext(message);
return ValueTask.CompletedTask;
await OnExitedSubject.OnNextAsync(message);
}
public Task Sync()

19
MoonlightServers.Daemon/ServerSys/Implementations/DockerProvisioner.cs
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@@ -3,6 +3,9 @@ using System.Reactive.Linq;
using System.Reactive.Subjects;
using Docker.DotNet;
using Docker.DotNet.Models;
using MoonCore.Observability;
using MoonlightServers.Daemon.Extensions;
using MoonlightServers.Daemon.Helpers;
using MoonlightServers.Daemon.Mappers;
using MoonlightServers.Daemon.ServerSys.Abstractions;
using MoonlightServers.Daemon.Services;
@@ -11,7 +14,7 @@ namespace MoonlightServers.Daemon.ServerSys.Implementations;
public class DockerProvisioner : IProvisioner
{
public IAsyncObservable<object> OnExited => OnExitedSubject.ToAsyncObservable();
public IAsyncObservable<object> OnExited => OnExitedSubject;
public bool IsProvisioned { get; private set; }
private readonly DockerClient DockerClient;
@@ -23,7 +26,7 @@ public class DockerProvisioner : IProvisioner
private readonly ServerConfigurationMapper Mapper;
private readonly IFileSystem FileSystem;
private Subject<object> OnExitedSubject = new();
private EventSubject<object> OnExitedSubject = new();
private string? ContainerId;
private string ContainerName;
@@ -56,7 +59,7 @@ public class DockerProvisioner : IProvisioner
ContainerEventSubscription = await EventService
.OnContainerEvent
.SubscribeAsync(HandleContainerEvent);
.SubscribeEventAsync(HandleContainerEvent);
// Check for any already existing runtime container to reclaim
Logger.LogDebug("Searching for orphan container to reclaim");
@@ -74,19 +77,17 @@ public class DockerProvisioner : IProvisioner
}
}
private ValueTask HandleContainerEvent(Message message)
private async ValueTask HandleContainerEvent(Message message)
{
// Only handle events for our own container
if (message.ID != ContainerId)
return ValueTask.CompletedTask;
return;
// Only handle die events
if (message.Action != "die")
return ValueTask.CompletedTask;
return;
OnExitedSubject.OnNext(message);
return ValueTask.CompletedTask;
await OnExitedSubject.OnNextAsync(message);
}
public Task Sync()

8
MoonlightServers.Daemon/ServerSys/Implementations/DockerStatistics.cs
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@@ -1,14 +1,14 @@
using System.Reactive.Linq;
using System.Reactive.Subjects;
using MoonCore.Observability;
using MoonlightServers.Daemon.Helpers;
using MoonlightServers.Daemon.ServerSys.Abstractions;
namespace MoonlightServers.Daemon.ServerSys.Implementations;
public class DockerStatistics : IStatistics
{
public IAsyncObservable<ServerStats> OnStats => OnStatsSubject.ToAsyncObservable();
public IAsyncObservable<ServerStats> OnStats => OnStatsSubject;
private readonly Subject<ServerStats> OnStatsSubject = new();
private readonly EventSubject<ServerStats> OnStatsSubject = new();
public Task Initialize()
=> Task.CompletedTask;

22
MoonlightServers.Daemon/Services/DockerEventService.cs
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@@ -3,6 +3,8 @@ using System.Reactive.Linq;
using System.Reactive.Subjects;
using Docker.DotNet;
using Docker.DotNet.Models;
using MoonCore.Observability;
using MoonlightServers.Daemon.Helpers;
namespace MoonlightServers.Daemon.Services;
@@ -11,13 +13,13 @@ public class DockerEventService : BackgroundService
private readonly ILogger<DockerEventService> Logger;
private readonly DockerClient DockerClient;
public IAsyncObservable<Message> OnContainerEvent => OnContainerSubject.ToAsyncObservable().ObserveOn(TaskPoolAsyncScheduler.Default);
public IAsyncObservable<Message> OnImageEvent => OnImageSubject.ToAsyncObservable().ObserveOn(TaskPoolAsyncScheduler.Default);
public IAsyncObservable<Message> OnNetworkEvent => OnNetworkSubject.ToAsyncObservable().ObserveOn(TaskPoolAsyncScheduler.Default);
public IAsyncObservable<Message> OnContainerEvent => OnContainerSubject;
public IAsyncObservable<Message> OnImageEvent => OnImageSubject;
public IAsyncObservable<Message> OnNetworkEvent => OnNetworkSubject;
private readonly Subject<Message> OnContainerSubject = new();
private readonly Subject<Message> OnImageSubject = new();
private readonly Subject<Message> OnNetworkSubject = new();
private readonly EventSubject<Message> OnContainerSubject = new();
private readonly EventSubject<Message> OnImageSubject = new();
private readonly EventSubject<Message> OnNetworkSubject = new();
public DockerEventService(
ILogger<DockerEventService> logger,
@@ -38,22 +40,22 @@ public class DockerEventService : BackgroundService
{
await DockerClient.System.MonitorEventsAsync(
new ContainerEventsParameters(),
new Progress<Message>(message =>
new Progress<Message>(async message =>
{
try
{
switch (message.Type)
{
case "container":
OnContainerSubject.OnNext(message);
await OnContainerSubject.OnNextAsync(message);
break;
case "image":
OnImageSubject.OnNext(message);
await OnImageSubject.OnNextAsync(message);
break;
case "network":
OnNetworkSubject.OnNext(message);
await OnNetworkSubject.OnNextAsync(message);
break;
}
}

10
MoonlightServers.Daemon/Startup.cs
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@@ -11,7 +11,9 @@ using MoonCore.Extended.Extensions;
using MoonCore.Extensions;
using MoonCore.Helpers;
using MoonCore.Logging;
using MoonCore.Observability;
using MoonlightServers.Daemon.Configuration;
using MoonlightServers.Daemon.Extensions;
using MoonlightServers.Daemon.Helpers;
using MoonlightServers.Daemon.Http.Hubs;
using MoonlightServers.Daemon.Mappers;
@@ -108,9 +110,13 @@ public class Startup
var server = factory.CreateServer(config);
await using var consoleSub = await server.Console.OnOutput
.SubscribeAsync(Console.Write);
.SubscribeEventAsync(line =>
{
Console.Write(line);
return ValueTask.CompletedTask;
});
await using var stateSub = await server.OnState.SubscribeAsync(state =>
await using var stateSub = await server.OnState.SubscribeEventAsync(state =>
{
Console.WriteLine($"State: {state}");
return ValueTask.CompletedTask;