/// <summary>
/// Downloads the images for the specified job.
/// </summary>
/// <example>
/// This starts an image download task:
/// <code>
/// Task.Factory.StartNew(() => new ImageDownload().Download(job, 100));
/// </code>
/// </example>
/// <param name="value">The job whose images are to be fetched.</param>
/// <param name="limit">Limit on number of images to download.</param>
public void Download(StoredJob value)
{
// Path where images will be stored
string path = System.Web.Hosting.HostingEnvironment.MapPath("~/App_Data/Jobs/" + value.JobId);
// Check that Job is actually stored on server before starting to save images
if (Directory.Exists(path))
{
string work = System.Web.Hosting.HostingEnvironment.MapPath("~/App_Data/Jobs/" + value.JobId);
for (int i = 0; i < value.Images.Length; i++)
{
//Downloads the images from AWS Concurrently and saves to directory in which job is stored
Task image1 = Task.Factory.StartNew(() => AWS.GetObject(value.Images[i].Image1.Key, value.Images[i].Image1.Bucket, value.JobId));
Task image2 = Task.Factory.StartNew(() => AWS.GetObject(value.Images[i].Image2.Key, value.Images[i].Image1.Bucket, value.JobId));
Task.WaitAll(image1, image2);
//Pushes the image onto the GlobalQueue
GlobalQueue.AddToQueue(value.JobId, value.Images[i].Image1.Key, value.Images[i].Image2.Key);
}
//FINISHED
}
else
{
// Log Error, possibly wait some time and try again
Console.WriteLine("Job is not stored");
}
}
/// <summary>
/// Uploads a CSV results file to shared AWS storage, allowing access to the results by other system components.
/// </summary>
/// <param name="filePath">Path of the file to upload.</param>
/// <param name="bucketName">Bucket to upload to.</param>
/// <param name="keyName">Storage key - used for retrieval. ".csv" is appended to this.</param>
public static void AWSUpload(string filePath, string bucketName, string keyName)
{
try
{
TransferUtility fileTransferUtility = new TransferUtility(new AmazonS3Client(Amazon.RegionEndpoint.EUWest1));
fileTransferUtility.Upload(filePath, bucketName, keyName + ".csv");
Console.WriteLine("Upload Completed");
UploadQueue.Upload();
}
catch (AmazonS3Exception amazonS3Exception)
{
AWS.AWSerror(amazonS3Exception);
}
}
