/// <summary>
/// Initiates an download of a specified APK.
/// Inserts an entry into the upload dictionary where download fragments are kept in memory while they are being sent to devices.
/// Returns a count of fragments to be expected for this APK when using this fragment size.
/// </summary>
/// <param name="packageDetails">Details of the package being downloaded.</param>
/// <param name="fragmentSize">The size of the fragments being downloaded as requested by the device.</param>
public static int StartOrIncrementDownload(PackageDetails packageDetails, int fragmentSize)
{
try
{
CleanUpDownloads();
Download packageDownload = null;
var downloadKey = GetDownloadKey(packageDetails, fragmentSize);
var packageKey = packageDetails.GetPackageKey();
var package = new byte[0];
if (FileControl.GetPackageList().Any(x => x.GetPackageKey().Equals(packageKey, StringComparison.OrdinalIgnoreCase)))
{
var path = FileControl.GetPackagePath(packageKey);
if (File.Exists(path))
{
package = FileControl.GetPackage(path);
if (activeDownloads.TryGetValue(downloadKey, out packageDownload))
{
packageDownload.ActiveDownloads++;
packageDownload.LastTimeStamp = DateTime.Now;
return(packageDownload.Fragments.Count);
}
else
{
packageDownload = new Download(packageDetails.Name, packageDetails.Version, package, fragmentSize);
if (activeDownloads.TryAdd(downloadKey, packageDownload))
{
return(packageDownload.Fragments.Count);
}
else
{
LoggingControl.Log("Error while starting download for " + packageDetails.Name + " " + packageDetails.Version + ". Could not add instance to download list.");
}
}
}
else
{
LoggingControl.Log("Error while starting download for " + packageDetails.Name + " " + packageDetails.Version + ". Could not find file.");
}
}
else
{
LoggingControl.Log("Error while cancelling downloads for " + packageDetails.Name + " " + packageDetails.Version + ". Could not find package in list.");
}
return(-1);
}
catch (Exception e)
{
LoggingControl.Log("Error while cancelling downloads for " + packageDetails.Name + " " + packageDetails.Version + ".", e);
return(-1);
}
}
/// <summary>
/// Recombines uploaded fragments into an APK file which is saved on the server before removing this entry from the upload dictionary.
/// </summary>
/// <param name="packageDetails">Details of the package upload that is being completed.</param>
public static bool FinishUpload(PackageDetails packageDetails)
{
try
{
Upload upload = null;
var uploadKey = GetUploadKey(packageDetails);
if (activeUploads.TryGetValue(uploadKey, out upload))
{
var package = upload.CombineFragmentsIntoPackage();
if (package.Length != upload.PackageSize)
{
LoggingControl.Log("Error while finishing upload for " + packageDetails.Name + " " + packageDetails.Version + ". Unexpected file size.");
return(false);
}
var path = FileControl.SavePackage(packageDetails.GetPackageKey(), package);
if (String.IsNullOrEmpty(path))
{
LoggingControl.Log("Error while finishing upload for " + packageDetails.Name + " " + packageDetails.Version + ". Could not find key save file.");
return(false);
}
return(activeUploads.TryRemove(uploadKey, out upload));
}
else
{
LoggingControl.Log("Error while finishing upload for " + packageDetails.Name + " " + packageDetails.Version + ". Could not find key " + uploadKey + ".");
return(false);
}
}
catch (Exception e)
{
LoggingControl.Log("Error while finishing upload for " + packageDetails.Name + " " + packageDetails.Version + ".", e);
return(false);
}
}