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Download logs from pod

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This commit is contained in:
Andreas Billmann
2023-08-01 22:09:47 +02:00
parent 12ef9680d0
commit 393f0f0e6b
5 changed files with 54 additions and 11 deletions
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5
K8sFileBrowser/Assets/Icons.axaml
View File

@@ -17,11 +17,8 @@
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<StreamGeometry x:Key="arrow_right_regular">M15.2685,4.20949 C14.97,3.92233 14.4952,3.93153 14.208,4.23005 C13.9209,4.52857 13.9301,5.00335 14.2286,5.29051 L22.5028,13.25 L3.75,13.25 C3.33579,13.25 3,13.5858 3,13.9999982 C3,14.4142 3.33579,14.75 3.75,14.75 L22.5018,14.75 L14.2286,22.7085 C13.9301,22.9957 13.9209,23.4705 14.208,23.769 C14.4952,24.0675 14.97,24.0767 15.2685,23.7896 L24.6965,14.7202 C25.1054,14.3268 25.1054,13.6723 24.6965,13.2788 L15.2685,4.20949 Z</StreamGeometry>
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<StreamGeometry x:Key="document_one_page_regular">M17.7499 2.00097C18.9408 2.00097 19.9156 2.92613 19.9947 4.09692L19.9999 4.25097V19.749C19.9999 20.9399 19.0748 21.9147 17.904 21.9938L17.7499 21.999H6.25006C5.0592 21.999 4.08442 21.0739 4.00525 19.9031L4.00006 19.749V4.25097C4.00006 3.0601 4.92522 2.08532 6.09601 2.00616L6.25006 2.00097H17.7499ZM17.7499 3.50097H6.25006C5.87037 3.50097 5.55657 3.78312 5.50691 4.1492L5.50006 4.25097V19.749C5.50006 20.1287 5.78222 20.4425 6.14829 20.4922L6.25006 20.499H17.7499C18.1296 20.499 18.4434 20.2169 18.4931 19.8508L18.4999 19.749V4.25097C18.4999 3.87127 18.2178 3.55748 17.8517 3.50782L17.7499 3.50097Z M7 15.75C7 15.3358 7.33578 15 7.75 15H16.25C16.6642 15 17 15.3358 17 15.75C17 16.1642 16.6642 16.5 16.25 16.5H7.75C7.33578 16.5 7 16.1642 7 15.75Z M7 7.75C7 7.33579 7.33578 7 7.75 7H16.25C16.6642 7 17 7.33579 17 7.75C17 8.16422 16.6642 8.5 16.25 8.5H7.75C7.33578 8.5 7 8.16422 7 7.75Z M7 11.75C7 11.3358 7.33578 11 7.75 11H16.25C16.6642 11 17 11.3358 17 11.75C17 12.1642 16.6642 12.5 16.25 12.5H7.75C7.33578 12.5 7 12.1642 7 11.75Z</StreamGeometry>
<StreamGeometry x:Key="arrow_sync_regular">M7.74944331,5.18010908 C8.0006303,5.50946902 7.93725859,5.9800953 7.60789865,6.23128229 C5.81957892,7.59514774 4.75,9.70820889 4.75,12 C4.75,15.7359812 7.57583716,18.8119527 11.2066921,19.2070952 L10.5303301,18.5303301 C10.2374369,18.2374369 10.2374369,17.7625631 10.5303301,17.4696699 C10.7965966,17.2034034 11.2132603,17.1791973 11.5068718,17.3970518 L11.5909903,17.4696699 L13.5909903,19.4696699 C13.8572568,19.7359365 13.8814629,20.1526002 13.6636084,20.4462117 L13.5909903,20.5303301 L11.5909903,22.5303301 C11.298097,22.8232233 10.8232233,22.8232233 10.5303301,22.5303301 C10.2640635,22.2640635 10.2398575,21.8473998 10.4577119,21.5537883 L10.5303301,21.4696699 L11.280567,20.7208479 C6.78460951,20.3549586 3.25,16.5902554 3.25,12 C3.25,9.23526399 4.54178532,6.68321165 6.6982701,5.03856442 C7.02763004,4.78737743 7.49825632,4.85074914 7.74944331,5.18010908 Z M13.4696699,1.46966991 C13.7625631,1.76256313 13.7625631,2.23743687 13.4696699,2.53033009 L12.7204313,3.27923335 C17.2159137,3.64559867 20.75,7.4100843 20.75,12 C20.75,14.6444569 19.5687435,17.0974104 17.5691913,18.7491089 C17.2498402,19.0129038 16.7771069,18.9678666 16.513312,18.6485156 C16.2495171,18.3291645 16.2945543,17.8564312 16.6139054,17.5926363 C18.2720693,16.2229363 19.25,14.1922015 19.25,12 C19.25,8.26436254 16.4246828,5.18861329 12.7943099,4.7930139 L13.4696699,5.46966991 C13.7625631,5.76256313 13.7625631,6.23743687 13.4696699,6.53033009 C13.1767767,6.8232233 12.701903,6.8232233 12.4090097,6.53033009 L10.4090097,4.53033009 C10.1161165,4.23743687 10.1161165,3.76256313 10.4090097,3.46966991 L12.4090097,1.46966991 C12.701903,1.1767767 13.1767767,1.1767767 13.4696699,1.46966991 Z</StreamGeometry>
</Style.Resources>
<Style Selector="PathIcon.loading">

3
K8sFileBrowser/Services/IKubernetesService.cs
View File

@@ -17,4 +17,7 @@ public interface IKubernetesService
IList<FileInformation> GetFiles(string namespaceName, string podName, string containerName, string path);
Task DownloadFile(Namespace? selectedNamespace, Pod? selectedPod, FileInformation selectedFile,
string? saveFileName, CancellationToken cancellationToken = default);
Task DownloadLog(Namespace? selectedNamespace, Pod? selectedPod,
string? saveFileName, CancellationToken cancellationToken = default);
}

34
K8sFileBrowser/Services/KubernetesService.cs
View File

@@ -73,7 +73,7 @@ public class KubernetesService : IKubernetesService
podName, namespaceName, containerName,
new[] { "find", path, "-maxdepth", "1", "-exec", "stat", "-c", "%F|%n|%s|%Y", "{}", ";" },
true,
execResult.ParseFileInformationCallback, CancellationToken.None)
(@in, @out, err) => execResult.ParseFileInformationCallback(@in, @out, err), CancellationToken.None)
.ConfigureAwait(false)
.GetAwaiter()
.GetResult();
@@ -101,7 +101,7 @@ public class KubernetesService : IKubernetesService
public async Task DownloadFile(Namespace? selectedNamespace, Pod? selectedPod, FileInformation selectedFile,
string? saveFileName, CancellationToken cancellationToken = default)
{
Log.Information("{SelectedNamespace} - {SelectedPod} - {SelectedFile} - {SaveFileName}",
Log.Information("{SelectedNamespace} - {SelectedPod} - {@SelectedFile} - {SaveFileName}",
selectedNamespace, selectedPod, selectedFile, saveFileName);
var handler = new ExecAsyncCallback(async (_, stdOut, stdError) =>
{
@@ -113,6 +113,7 @@ public class KubernetesService : IKubernetesService
var entry = await tarInputStream.GetNextEntryAsync(cancellationToken);
if (entry == null)
{
Log.Error("Copy command failed: no files found");
throw new IOException("Copy command failed: no files found");
}
@@ -122,6 +123,7 @@ public class KubernetesService : IKubernetesService
}
catch (Exception ex)
{
Log.Error(ex, "Copy command failed");
throw new IOException($"Copy command failed: {ex.Message}");
}
@@ -129,18 +131,36 @@ public class KubernetesService : IKubernetesService
while (streamReader.EndOfStream == false)
{
var error = await streamReader.ReadToEndAsync(cancellationToken);
Log.Error(error);
Log.Error("Remote error: {Error}",error);
}
});
// the kubectl uses also tar for copying files
await _kubernetesClient.NamespacedPodExecAsync(
selectedPod.Name,
selectedNamespace.Name,
selectedPod.Containers.First(),
selectedPod?.Name,
selectedNamespace?.Name,
selectedPod?.Containers.First(),
new[] { "sh", "-c", $"tar cf - {selectedFile.Name}" },
false,
handler,
default);
cancellationToken);
}
public async Task DownloadLog(Namespace? selectedNamespace, Pod? selectedPod,
string? saveFileName, CancellationToken cancellationToken = default)
{
Log.Information("{SelectedNamespace} - {SelectedPod} - {SaveFileName}",
selectedNamespace, selectedPod, saveFileName);
// the kubectl uses also tar for copying files
var response = await _kubernetesClient.CoreV1.ReadNamespacedPodLogWithHttpMessagesAsync(
selectedPod?.Name,
selectedNamespace?.Name,
container: selectedPod?.Containers.First(),
follow: false , cancellationToken: cancellationToken)
.ConfigureAwait(false);
await using var outputFileStream = File.OpenWrite(saveFileName!);
var stream = response.Body;
await stream.CopyToAsync(outputFileStream, cancellationToken);
}
}

20
K8sFileBrowser/ViewModels/MainWindowViewModel.cs
View File

@@ -72,6 +72,7 @@ public class MainWindowViewModel : ViewModelBase
}
public ReactiveCommand<Unit, Unit> DownloadCommand { get; }
public ReactiveCommand<Unit, Unit> DownloadLogCommand { get; }
public ReactiveCommand<Unit, Unit> ParentCommand { get; }
public ReactiveCommand<Unit, Unit> OpenCommand { get; }
@@ -81,6 +82,10 @@ public class MainWindowViewModel : ViewModelBase
//TODO: use dependency injection to get the kubernetes service
IKubernetesService kubernetesService = new KubernetesService();
var isSelectedPod = this
.WhenAnyValue(x => x.SelectedPod)
.Select(x => x != null);
var isFile = this
.WhenAnyValue(x => x.SelectedFile, x => x.IsDownloadActive)
.Select(x => x is { Item1.Type: FileType.File, Item2: false });
@@ -112,6 +117,21 @@ public class MainWindowViewModel : ViewModelBase
}, RxApp.TaskpoolScheduler);
}, isFile, RxApp.MainThreadScheduler);
DownloadLogCommand = ReactiveCommand.CreateFromTask(async () =>
{
await Observable.StartAsync(async () =>
{
var fileName = SelectedPod?.Name + ".log";
var saveFileName = await ApplicationHelper.SaveFile(".", fileName);
if (saveFileName != null)
{
IsDownloadActive = true;
await kubernetesService.DownloadLog(SelectedNamespace, SelectedPod, saveFileName);
IsDownloadActive = false;
}
}, RxApp.TaskpoolScheduler);
}, isSelectedPod, RxApp.MainThreadScheduler);
ParentCommand = ReactiveCommand.Create(() =>
{
SelectedPath = SelectedPath![..SelectedPath!.LastIndexOf('/')];

3
K8sFileBrowser/Views/MainWindow.axaml
View File

@@ -87,6 +87,9 @@
<Button Command="{Binding DownloadCommand}" VerticalAlignment="Center" ToolTip.Tip="Download File">
<PathIcon Data="{StaticResource arrow_download_regular}"></PathIcon>
</Button>
<Button Command="{Binding DownloadLogCommand}" VerticalAlignment="Center" ToolTip.Tip="Download Pod Log">
<PathIcon Data="{StaticResource document_one_page_regular}"></PathIcon>
</Button>
</StackPanel>
</Grid>
<DataGrid Grid.Row="1"