/// <summary>
/// Installs a library as specified in the <paramref name="desiredState" /> parameter.
/// </summary>
/// <param name="desiredState">The details about the library to install.</param>
/// <param name="cancellationToken">A token that allows for the operation to be cancelled.</param>
/// <returns>
/// The <see cref="T:Microsoft.Web.LibraryManager.Contracts.ILibraryInstallationResult" /> from the installation process.
/// </returns>
public async Task <ILibraryInstallationResult> InstallAsync(ILibraryInstallationState desiredState, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return(LibraryInstallationResult.FromCancelled(desiredState));
}
if (!desiredState.IsValid(out IEnumerable <IError> errors))
{
return(new LibraryInstallationResult(desiredState, errors.ToArray()));
}
try
{
ILibraryInstallationResult result = await UpdateStateAsync(desiredState, cancellationToken);
if (!result.Success)
{
return(result);
}
desiredState = result.InstallationState;
foreach (string file in desiredState.Files)
{
if (cancellationToken.IsCancellationRequested)
{
return(LibraryInstallationResult.FromCancelled(desiredState));
}
if (string.IsNullOrEmpty(file))
{
return(new LibraryInstallationResult(desiredState, PredefinedErrors.CouldNotWriteFile(file)));
}
string path = Path.Combine(desiredState.DestinationPath, file);
var sourceStream = new Func <Stream>(() => GetStreamAsync(desiredState, file, cancellationToken).Result);
bool writeOk = await HostInteraction.WriteFileAsync(path, sourceStream, desiredState, cancellationToken).ConfigureAwait(false);
if (!writeOk)
{
return(new LibraryInstallationResult(desiredState, PredefinedErrors.CouldNotWriteFile(file)));
}
}
}
catch (UnauthorizedAccessException)
{
return(new LibraryInstallationResult(desiredState, PredefinedErrors.PathOutsideWorkingDirectory()));
}
catch (Exception ex)
{
HostInteraction.Logger.Log(ex.ToString(), LogLevel.Error);
return(new LibraryInstallationResult(desiredState, PredefinedErrors.UnknownException()));
}
return(LibraryInstallationResult.FromSuccess(desiredState));
}
/// <summary>
/// Installs a library as specified in the <paramref name="desiredState" /> parameter.
/// </summary>
/// <param name="desiredState">The details about the library to install.</param>
/// <param name="cancellationToken">A token that allows for the operation to be cancelled.</param>
/// <returns>
/// The <see cref="T:Microsoft.Web.LibraryInstaller.Contracts.ILibraryInstallationResult" /> from the installation process.
/// </returns>
/// <exception cref="InvalidLibraryException"></exception>
public async Task <ILibraryInstallationResult> InstallAsync(ILibraryInstallationState desiredState, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return(LibraryInstallationResult.FromCancelled(desiredState));
}
if (!desiredState.IsValid(out IEnumerable <IError> errors))
{
return(new LibraryInstallationResult(desiredState, errors.ToArray()));
}
try
{
var catalog = (CdnjsCatalog)GetCatalog();
ILibrary library = await catalog.GetLibraryAsync(desiredState.LibraryId, cancellationToken).ConfigureAwait(false);
if (library == null)
{
throw new InvalidLibraryException(desiredState.LibraryId, Id);
}
await HydrateCacheAsync(library, cancellationToken).ConfigureAwait(false);
var files = desiredState.Files?.ToList();
// "Files" is optional on this provider, so when none are specified all should be used
if (files == null || files.Count == 0)
{
desiredState = new LibraryInstallationState
{
ProviderId = Id,
LibraryId = desiredState.LibraryId,
DestinationPath = desiredState.DestinationPath,
Files = library.Files.Keys.ToList(),
};
}
foreach (string file in desiredState.Files)
{
if (cancellationToken.IsCancellationRequested)
{
return(LibraryInstallationResult.FromCancelled(desiredState));
}
string path = Path.Combine(desiredState.DestinationPath, file);
var sourceStream = new Func <Stream>(() => GetStreamAsync(desiredState, file, cancellationToken).Result);
bool writeOk = await HostInteraction.WriteFileAsync(path, sourceStream, desiredState, cancellationToken).ConfigureAwait(false);
if (!writeOk)
{
return(new LibraryInstallationResult(desiredState, PredefinedErrors.CouldNotWriteFile(file)));
}
}
}
catch (Exception ex) when(ex is InvalidLibraryException || ex.InnerException is InvalidLibraryException)
{
return(new LibraryInstallationResult(desiredState, PredefinedErrors.UnableToResolveSource(desiredState.LibraryId, desiredState.ProviderId)));
}
catch (UnauthorizedAccessException)
{
return(new LibraryInstallationResult(desiredState, PredefinedErrors.PathOutsideWorkingDirectory()));
}
catch (Exception ex)
{
HostInteraction.Logger.Log(ex.ToString(), LogLevel.Error);
return(new LibraryInstallationResult(desiredState, PredefinedErrors.UnknownException()));
}
return(LibraryInstallationResult.FromSuccess(desiredState));
}
