protected virtual Task GetDownloadFileTask(string sourceFile, string tmpFile, CancellationToken ct)
{
var downloadFileTask = new Task(() =>
{
if (!File.Exists(tmpFile))
{
var service = ServiceProviderProxy.GetInstallerWebService();
RaiseOnProgressChangedEvent(0);
RaiseOnStatusChangedEvent(DownloadingSetupFilesMessage);
Log.WriteStart("Downloading file");
Log.WriteInfo(string.Format("Downloading file \"{0}\" to \"{1}\"", sourceFile, tmpFile));
long downloaded = 0;
long fileSize = service.GetFileSize(sourceFile);
if (fileSize == 0)
{
throw new FileNotFoundException("Service returned empty file.", sourceFile);
}
byte[] content;
while (downloaded < fileSize)
{
// Throw OperationCancelledException if there is an incoming cancel request
ct.ThrowIfCancellationRequested();
content = service.GetFileChunk(sourceFile, (int)downloaded, ChunkSize);
if (content == null)
{
throw new FileNotFoundException("Service returned NULL file content.", sourceFile);
}
FileUtils.AppendFileContent(tmpFile, content);
downloaded += content.Length;
// Update download progress
RaiseOnStatusChangedEvent(DownloadingSetupFilesMessage,
string.Format(DownloadProgressMessage, downloaded / 1024, fileSize / 1024));
RaiseOnProgressChangedEvent(Convert.ToInt32((downloaded * 100) / fileSize));
if (content.Length < ChunkSize)
{
break;
}
}
RaiseOnStatusChangedEvent(DownloadingSetupFilesMessage, "100%");
Log.WriteEnd(string.Format("Downloaded {0} bytes", downloaded));
}
}, ct);
return(downloadFileTask);
}
private void DownloadFile(string sourceFile, string destinationFile)
{
try
{
var service = ServiceProviderProxy.GetInstallerWebService();
//
Log.WriteStart("Downloading file");
Log.WriteInfo(string.Format("Downloading file \"{0}\" to \"{1}\"", sourceFile, destinationFile));
long downloaded = 0;
long fileSize = service.GetFileSize(sourceFile);
if (fileSize == 0)
{
throw new FileNotFoundException("Service returned empty file.", sourceFile);
}
byte[] content;
while (downloaded < fileSize)
{
content = service.GetFileChunk(sourceFile, (int)downloaded, ChunkSize);
if (content == null)
{
throw new FileNotFoundException("Service returned NULL file content.", sourceFile);
}
FileUtils.AppendFileContent(destinationFile, content);
downloaded += content.Length;
//update progress bar
RaiseOnStatusChangedEvent(DownloadingSetupFilesMessage,
string.Format(DownloadProgressMessage, downloaded / 1024, fileSize / 1024));
//
RaiseOnProgressChangedEvent(Convert.ToInt32((downloaded * 100) / fileSize));
if (content.Length < ChunkSize)
{
break;
}
}
//
RaiseOnStatusChangedEvent(DownloadingSetupFilesMessage, "100%");
//
Log.WriteEnd(string.Format("Downloaded {0} bytes", downloaded));
}
catch (Exception ex)
{
if (Utils.IsThreadAbortException(ex))
{
return;
}
throw;
}
}
/// <summary>
/// Displays process progress.
/// </summary>
private void LoadAppDistributiveInternal()
{
//
try
{
var service = ServiceProviderProxy.GetInstallerWebService();
//
string dataFolder = FileUtils.GetDataDirectory();
string tmpFolder = FileUtils.GetTempDirectory();
if (!Directory.Exists(dataFolder))
{
Directory.CreateDirectory(dataFolder);
Log.WriteInfo("Data directory created");
}
if (Directory.Exists(tmpFolder))
{
FileUtils.DeleteTempDirectory();
}
if (!Directory.Exists(tmpFolder))
{
Directory.CreateDirectory(tmpFolder);
Log.WriteInfo("Tmp directory created");
}
string fileToDownload = null;
if (!string.IsNullOrEmpty(localFile))
{
fileToDownload = localFile;
}
else
{
fileToDownload = Path.GetFileName(remoteFile);
}
string destinationFile = Path.Combine(dataFolder, fileToDownload);
string tmpFile = Path.Combine(tmpFolder, fileToDownload);
//check whether file already downloaded
if (!File.Exists(destinationFile))
{
if (string.IsNullOrEmpty(remoteFile))
{
//need to get remote file name
RaiseOnStatusChangedEvent(ConnectingRemotServiceMessage);
//
RaiseOnProgressChangedEvent(0);
//
DataSet ds = service.GetReleaseFileInfo(componentCode, version);
//
RaiseOnProgressChangedEvent(100);
//
if (ds != null &&
ds.Tables.Count > 0 &&
ds.Tables[0].Rows.Count > 0)
{
DataRow row = ds.Tables[0].Rows[0];
remoteFile = row["FullFilePath"].ToString();
fileToDownload = Path.GetFileName(remoteFile);
destinationFile = Path.Combine(dataFolder, fileToDownload);
tmpFile = Path.Combine(tmpFolder, fileToDownload);
}
else
{
throw new Exception("Installer not found");
}
}
// download file to tmp folder
RaiseOnStatusChangedEvent(DownloadingSetupFilesMessage);
//
RaiseOnProgressChangedEvent(0);
//
DownloadFile(remoteFile, tmpFile);
//
RaiseOnProgressChangedEvent(100);
// copy downloaded file to data folder
RaiseOnStatusChangedEvent(CopyingSetupFilesMessage);
//
RaiseOnProgressChangedEvent(0);
// Ensure that the target does not exist.
if (File.Exists(destinationFile))
{
FileUtils.DeleteFile(destinationFile);
}
File.Move(tmpFile, destinationFile);
//
RaiseOnProgressChangedEvent(100);
}
// unzip file
RaiseOnStatusChangedEvent(PreparingSetupFilesMessage);
//
RaiseOnProgressChangedEvent(0);
//
UnzipFile(destinationFile, tmpFolder);
//
RaiseOnProgressChangedEvent(100);
//
RaiseOnOperationCompletedEvent();
}
catch (Exception ex)
{
if (Utils.IsThreadAbortException(ex))
{
return;
}
Log.WriteError("Loader module error", ex);
//
RaiseOnOperationFailedEvent(ex);
}
}
