/// <summary>
/// Comprueba si un fichero existe en la ruta seleccionada
/// </summary>
/// <param name="filePath">ruta completa al fichero</param>
/// <returns></returns>
public async Task <bool> CheckFileExistsAsync(string filePath)
{
var azureFile = AzureFilePath.FromFilePath(filePath);
var containerService = blobServiceClient.GetBlobContainerClient(azureFile.Container);
return(await containerService.GetBlobClient(azureFile.FileName).ExistsAsync());
}
/// <summary>
/// Escribe un fichero en la ruta especfificada
/// </summary>
/// <param name="filePath">Ruta completa al fichero junto al nombre del archivo y su extensión</param>
/// <param name="content">Contenido del fichero</param>
public async Task WriteFileAsync(string filePath, byte[] content)
{
var azureFile = AzureFilePath.FromFilePath(filePath);
var containerService = blobServiceClient.GetBlobContainerClient(azureFile.Container);
BlobClient blobClient = containerService.GetBlobClient(azureFile.FileName);
using (MemoryStream stream = new MemoryStream(content))
{
stream.Position = 0;
await blobClient.UploadAsync(stream, true);
}
}
private async Task <T> AccessToFileAsync <T>(string filePath, Func <CloudFile, Task <T> > delFunction)
{
var azureFile = AzureFilePath.FromFilePath(filePath);
// Get a reference to the file share we created previously.
CloudFileShare share = fileClient.GetShareReference(azureFile.ShareReference);
// Ensure that the share exists.
if (true || await share.ExistsAsync().ConfigureAwait(false)) //Obviamos esta comprobación porque puede que no se tenga privilegios suficientes
{
// Get a reference to the root directory for the share.
CloudFileDirectory rootDir = share.GetRootDirectoryReference();
// Get a reference to the directory we created previously.
if (azureFile.Folders.Any())
{
CloudFileDirectory sampleDir = rootDir.GetDirectoryReference(azureFile.Folders[0]);
if (!sampleDir.Exists())
{
throw new Exception("Incorrect route path.");
}
for (int i = 1; i < azureFile.Folders.Count; i++)
{
sampleDir = sampleDir.GetDirectoryReference(azureFile.Folders[i]);
if (!sampleDir.Exists())
{
throw new Exception("Incorrect route path.");
}
}
CloudFile file = sampleDir.GetFileReference(azureFile.FileName);
// Ensure that the file exists.
return(await delFunction(file).ConfigureAwait(false));
}
else
{
CloudFile file = rootDir.GetFileReference(azureFile.FileName);
// Ensure that the file exists.
return(await delFunction(file).ConfigureAwait(false));
}
}
else
{
throw new Exception("Share not found.");
}
}
/// <summary>
/// Obtiene el contenido de un fichero como un array de bytes
/// </summary>
/// <param name="filePath">Ruta completa al fichero</param>
/// <returns></returns>
public async Task <byte[]> GetFileContentAsync(string filePath)
{
var azureFile = AzureFilePath.FromFilePath(filePath);
var containerService = blobServiceClient.GetBlobContainerClient(azureFile.Container);
BlobClient blobClient = containerService.GetBlobClient(azureFile.FileName);
if (!await blobClient.ExistsAsync())
{
throw new FileNotFoundException();
}
using (MemoryStream stream = new MemoryStream())
{
await blobClient.DownloadToAsync(stream);
return(stream.ToArray());
}
}
/// <summary>
/// Obtiene el contenido de un fichero como una cadena de texto en UFT8
/// </summary>
/// <param name="filePath">Ruta completa al fichero</param>
/// <returns></returns>
public async Task <string> GetFileContentStringAsync(string filePath)
{
var azureFile = AzureFilePath.FromFilePath(filePath);
var containerService = blobServiceClient.GetBlobContainerClient(azureFile.Container);
BlobClient blobClient = containerService.GetBlobClient(azureFile.FileName);
if (!await blobClient.ExistsAsync())
{
throw new FileNotFoundException();
}
using (MemoryStream stream = new MemoryStream())
{
await blobClient.DownloadToAsync(stream);
stream.Position = 0;
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
return(reader.ReadToEnd());
}
}
}
