Move the log and crash dump lookup out of the start use case

This commit is contained in:
maj00r
2026-10-04 14:38:05 +02:00
parent 00795513b9
commit 3ac792c0fa
6 changed files with 125 additions and 87 deletions

View File

@@ -0,0 +1,39 @@
using StarterNG.Application;
using StarterNG.Tests.Fakes;
namespace StarterNG.Tests;
public class SimulatorAftermathTests
{
private static readonly string Build =
Path.Combine(Path.GetTempPath(), "maszyna", "cmake-build-diag", "bin", "eu07_2026-10-04_fc195880");
[Fact]
public void Minidumps_of_this_run_are_found_in_the_installation_and_under_crashpad()
{
var installation = new TestInstallation(new InMemoryFileSystem()
.WithExecutable(Build)
.WithFile(TestInstallation.At("crash_2026-10-04_13-03-12.dmp"), "MDMP")
.WithFile(TestInstallation.At("crashdumps", "reports", "1a2b.dmp"), "MDMP"));
installation.Files.LastWriteTimeUtc = new DateTime(2026, 10, 4, 11, 3, 12, DateTimeKind.Utc);
var aftermath = new SimulatorAftermath(installation.Files, installation.Paths, installation.Log);
var thisRun = aftermath.CrashDumpsSince(new DateTime(2026, 10, 4, 11, 3, 0, DateTimeKind.Utc), Build);
var later = aftermath.CrashDumpsSince(new DateTime(2026, 10, 4, 12, 0, 0, DateTimeKind.Utc), Build);
Assert.Equal(2, thisRun.Count);
Assert.Contains(thisRun, dump => dump.EndsWith("crash_2026-10-04_13-03-12.dmp"));
Assert.Empty(later);
}
[Fact]
public void The_end_of_the_simulator_log_is_read_for_a_silent_crash()
{
var installation = new TestInstallation(new InMemoryFileSystem()
.WithFile(TestInstallation.At("log.txt"), "first\r\nsecond\r\n\r\nthird\r\n"));
var tail = new SimulatorAftermath(installation.Files, installation.Paths, installation.Log).SimulatorLogTail(2);
Assert.Equal(new[] { "second", "third" }, tail);
}
}

View File

@@ -68,33 +68,6 @@ public class StartSimulationTests
Assert.False(launcher.CapturedErrors);
}
[Fact]
public void Minidumps_of_this_run_are_found_in_the_installation_and_under_crashpad()
{
var (start, _, installation) = Rig(files => files
.WithExecutable(Build)
.WithFile(TestInstallation.At("crash_2026-10-04_13-03-12.dmp"), "MDMP")
.WithFile(TestInstallation.At("crashdumps", "reports", "1a2b.dmp"), "MDMP"));
installation.Files.LastWriteTimeUtc = new DateTime(2026, 10, 4, 11, 3, 12, DateTimeKind.Utc);
var thisRun = start.CrashDumpsSince(new DateTime(2026, 10, 4, 11, 3, 0, DateTimeKind.Utc), Build);
var later = start.CrashDumpsSince(new DateTime(2026, 10, 4, 12, 0, 0, DateTimeKind.Utc), Build);
Assert.Equal(2, thisRun.Count);
Assert.Contains(thisRun, dump => dump.EndsWith("crash_2026-10-04_13-03-12.dmp"));
Assert.Empty(later);
}
[Fact]
public void The_end_of_the_simulator_log_is_read_for_a_silent_crash()
{
var (start, _, _) = Rig(files => files
.WithExecutable(Build)
.WithFile(TestInstallation.At("log.txt"), "first\r\nsecond\r\n\r\nthird\r\n"));
Assert.Equal(new[] { "second", "third" }, start.SimulatorLogTail(2));
}
[Fact]
public void The_editor_opens_the_scenery_itself_not_an_export()
{

View File

@@ -62,6 +62,7 @@ public sealed class AppServices
files, clock, log, settingsPaths.UpdateCheckPath());
StartSimulation = new StartSimulation(State, SettingsStore, Library.Vehicles, Executables, files, paths,
Processes, Random, log);
Aftermath = new SimulatorAftermath(files, paths, log);
}
public static AppServices Current =>
@@ -139,5 +140,7 @@ public sealed class AppServices
public StartSimulation StartSimulation { get; }
public SimulatorAftermath Aftermath { get; }
public LocalizationService Localization { get; }
}

View File

@@ -0,0 +1,81 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using StarterNG.Application.Abstractions;
using StarterNG.Infrastructure.Adapters;
namespace StarterNG.Application;
/// <summary>What a simulator that went down left behind: its log and its crash dumps.</summary>
public sealed class SimulatorAftermath
{
private readonly IFileSystem _files;
private readonly IGamePaths _paths;
private readonly IDiagnosticsLog _log;
public SimulatorAftermath(IFileSystem files, IGamePaths paths, IDiagnosticsLog log)
{
_files = files;
_paths = paths;
_log = log;
}
/// <summary>
/// Minidumps written since the simulator was started, newest first. The
/// simulator names them crash_*.dmp relative to its working directory - the
/// installation - and crashpad, where it is set up, keeps its own under
/// crashdumps; the folder of the binary is looked at too, for a simulator that
/// was once run from there.
/// </summary>
public IReadOnlyList<string> CrashDumpsSince(DateTime startedUtc, string executable)
{
var dumps = new List<string>();
try
{
foreach (string directory in new[] { _paths.Root, Path.GetDirectoryName(executable) ?? _paths.Root }
.Distinct(StringComparer.OrdinalIgnoreCase)
.Where(_files.DirectoryExists))
dumps.AddRange(_files.GetFiles(directory, "*.dmp"));
string crashpad = _paths.FromRoot("crashdumps");
if (_files.DirectoryExists(crashpad))
dumps.AddRange(_files.GetFilesRecursive(crashpad, "*.dmp"));
// A little slack: the start is taken just after the launch, not before it.
var since = startedUtc - TimeSpan.FromSeconds(5);
return dumps.Distinct(StringComparer.OrdinalIgnoreCase)
.Where(dump => _files.GetLastWriteTimeUtc(dump) >= since)
.OrderByDescending(_files.GetLastWriteTimeUtc)
.ToList();
}
catch (Exception ex)
{
_log.Log("looking for crash dumps", ex);
return Array.Empty<string>();
}
}
/// <summary>The end of the simulator's own log, for when it died without a word on its error stream.</summary>
public IReadOnlyList<string> SimulatorLogTail(int count)
{
string path = _paths.FromRoot("log.txt");
try
{
if (!_files.FileExists(path))
return Array.Empty<string>();
var lines = LegacyText.Decode(_files.ReadAllBytes(path))
.Split('\n')
.Select(line => line.TrimEnd('\r'))
.Where(line => line.Trim().Length > 0)
.ToList();
return lines.Skip(Math.Max(0, lines.Count - count)).ToList();
}
catch (Exception ex)
{
_log.Log($"reading {path}", ex);
return Array.Empty<string>();
}
}
}

View File

@@ -63,64 +63,6 @@ public sealed class StartSimulation
_log = log;
}
/// <summary>
/// Minidumps written since the simulator was started, newest first. The
/// simulator names them crash_*.dmp relative to its working directory - the
/// installation - and crashpad, where it is set up, keeps its own under
/// crashdumps; the folder of the binary is looked at too, for a simulator that
/// was once run from there.
/// </summary>
public IReadOnlyList<string> CrashDumpsSince(DateTime startedUtc, string executable)
{
var dumps = new List<string>();
try
{
foreach (string directory in new[] { _paths.Root, Path.GetDirectoryName(executable) ?? _paths.Root }
.Distinct(StringComparer.OrdinalIgnoreCase)
.Where(_files.DirectoryExists))
dumps.AddRange(_files.GetFiles(directory, "*.dmp"));
string crashpad = _paths.FromRoot("crashdumps");
if (_files.DirectoryExists(crashpad))
dumps.AddRange(_files.GetFilesRecursive(crashpad, "*.dmp"));
// A little slack: the start is taken just after the launch, not before it.
var since = startedUtc - TimeSpan.FromSeconds(5);
return dumps.Distinct(StringComparer.OrdinalIgnoreCase)
.Where(dump => _files.GetLastWriteTimeUtc(dump) >= since)
.OrderByDescending(_files.GetLastWriteTimeUtc)
.ToList();
}
catch (Exception ex)
{
_log.Log("looking for crash dumps", ex);
return Array.Empty<string>();
}
}
/// <summary>The end of the simulator's own log, for when it died without a word on its error stream.</summary>
public IReadOnlyList<string> SimulatorLogTail(int count)
{
string path = _paths.FromRoot("log.txt");
try
{
if (!_files.FileExists(path))
return Array.Empty<string>();
var lines = LegacyText.Decode(_files.ReadAllBytes(path))
.Split('\n')
.Select(line => line.TrimEnd('\r'))
.Where(line => line.Trim().Length > 0)
.ToList();
return lines.Skip(Math.Max(0, lines.Count - count)).ToList();
}
catch (Exception ex)
{
_log.Log($"reading {path}", ex);
return Array.Empty<string>();
}
}
public static string? StartableVehicle(Trainset? trainset, string? preferred)
{
if (trainset is null || trainset.Vehicles.Count == 0)

View File

@@ -597,7 +597,7 @@ public partial class MainWindow : Window
var words = exit.CleanErrors.Count > 0
? exit.CleanErrors
: AppServices.Current.StartSimulation.SimulatorLogTail(12);
: AppServices.Current.Aftermath.SimulatorLogTail(12);
var message = new StringBuilder();
message.AppendLine(string.Format(App.Loc["SimExitCode"], exit.DescribeCode()));
@@ -611,7 +611,7 @@ public partial class MainWindow : Window
}
message.AppendLine().Append(App.Loc["SimExitSeeLog"]);
string? dump = AppServices.Current.StartSimulation.CrashDumpsSince(startedUtc, executable).FirstOrDefault();
string? dump = AppServices.Current.Aftermath.CrashDumpsSince(startedUtc, executable).FirstOrDefault();
if (dump is not null)
message.AppendLine().AppendLine().AppendLine(string.Format(App.Loc["SimExitDump"], dump))
.Append(App.Loc["SimExitOpenDump"]);