/// <summary>
/// Uploads a given image to the converted images container
///
/// The given image should already have the desired filter applied
/// </summary>
/// <param name="jobEntity"></param>
/// <param name="blobName"></param>
/// <param name="convertedImage"></param>
public async void UploadConvertedImage(JobEntity jobEntity, string blobName, MemoryStream convertedImage)
{
CloudBlobContainer convertedImagesContainer = _blobClient.GetContainerReference(ConfigSettings.CONVERTED_IMAGES_CONTAINER_NAME);
CloudBlockBlob convertedBlockBlob = convertedImagesContainer.GetBlockBlobReference(blobName);
convertedBlockBlob.Metadata.Add(ConfigSettings.JOBID_METADATA_NAME, jobEntity.JobId);
convertedBlockBlob.Metadata.Add(ConfigSettings.IMAGE_CONVERSION_MODE_METADATA_NAME, jobEntity.ImageConversionMode);
convertedBlockBlob.Metadata.Add(ConfigSettings.IMAGE_SOURCE_METADATA_NAME, jobEntity.ImageSource);
convertedBlockBlob.Properties.ContentType = System.Net.Mime.MediaTypeNames.Image.Jpeg;
await convertedBlockBlob.UploadFromStreamAsync(convertedImage);
}
public static async void Run([BlobTrigger(route, Connection = ConfigSettings.STORAGE_CONNECTIONSTRING_NAME)] Stream myBlob, string name, ILogger log)
{
log.LogInformation("[PENDING] Connecting to blob storage...");
BlobStorage blobStorage = new BlobStorage();
log.LogInformation("[SUCCESS] Connected to blob storage");
string imageSourceURI = $"{Environment.GetEnvironmentVariable(ConfigSettings.STORAGE_DOMAIN_METADATA_NAME)}/{ConfigSettings.TO_SEPIA_CONTAINER_NAME}/{name}";
string jobId = Guid.NewGuid().ToString();
JobEntity initialJobEntity = JobEntity.New(jobId, ConversionModeNames.SEPIA, JobStatusCodes.IMAGE_OBTAINED, JobStatusMessages.IMAGE_OBTAINED, imageSourceURI, "");
log.LogInformation("[PENDING] Adding initial job entry to table...");
await Shared.UpdateJobTableWithStatus(log, initialJobEntity);
log.LogInformation("[SUCCESS] Initial job entry added to table");
string convertedBlobName = $"{Guid.NewGuid()}-{name}";
try
{
log.LogInformation("[PENDING] Applying sepia filter to image...");
MemoryStream convertedMemoryStream = ImageConverter.ConvertImageToSepia(myBlob);
log.LogInformation("[SUCCESS] Applied sepia filter to image");
JobEntity convertInProgressJobEntity = JobEntity.New(jobId, ConversionModeNames.SEPIA, JobStatusCodes.BEING_CONVERTED, JobStatusMessages.BEING_CONVERTED, imageSourceURI, "");
log.LogInformation("[PENDING] Updating job status to conversion-in-progress");
await Shared.UpdateJobTableWithStatus(log, convertInProgressJobEntity);
log.LogInformation("[SUCCESS] Job status updated to conversion-in-progress");
log.LogInformation("[PENDING] Uploading converted image to converted images container...");
blobStorage.UploadConvertedImage(initialJobEntity, convertedBlobName, convertedMemoryStream);
log.LogInformation("[SUCCESS] Converted image uploaded to converted images container");
}
catch (Exception e)
{
log.LogError("An error occured while converting the image");
try
{
log.LogInformation("[PENDING} Uploading original image to failed container...");
blobStorage.UploadFailedImage(initialJobEntity, convertedBlobName, myBlob);
log.LogInformation("[SUCCESS] Original image uploaded to failed container");
}
catch (Exception ex)
{
log.LogError("Failed to upload image to failed container");
}
}
}
/// <summary>
/// Replace the corresponding job entity with the
/// given job entity
/// </summary>
/// <param name="jobEntity"></param>
/// <returns></returns>
public async Task <bool> UpdateJobEntity(JobEntity jobEntity)
{
TableOperation replaceOperation = TableOperation.Replace(jobEntity);
TableResult result = await _table.ExecuteAsync(replaceOperation);
if (result.HttpStatusCode > 199 && result.HttpStatusCode < 300)
{
return(true);
}
return(false);
}
/// <summary>
/// Uploads a given image to the failed images container
///
/// The given image is expected to be the original source
/// </summary>
/// <param name="jobEntity"></param>
/// <param name="blobName"></param>
/// <param name="originalImage"></param>
public async void UploadFailedImage(JobEntity jobEntity, string blobName, Stream originalImage)
{
CloudBlobContainer failedImagesContainer = _blobClient.GetContainerReference(ConfigSettings.FAILED_IMAGES_CONTAINER_NAME);
CloudBlockBlob failedBlobBlock = failedImagesContainer.GetBlockBlobReference(blobName);
failedBlobBlock.Metadata.Add(ConfigSettings.JOBID_METADATA_NAME, jobEntity.JobId);
failedBlobBlock.Metadata.Add(ConfigSettings.IMAGE_CONVERSION_MODE_METADATA_NAME, jobEntity.ImageConversionMode);
failedBlobBlock.Metadata.Add(ConfigSettings.IMAGE_SOURCE_METADATA_NAME, jobEntity.ImageSource);
originalImage.Seek(0, SeekOrigin.Begin);
await failedBlobBlock.UploadFromStreamAsync(originalImage);
}
/// <summary>
/// Updates the job entity status.
/// </summary>
/// <param name="jobId">The job identifier.</param>
/// <param name="status">The status.</param>
/// <param name="message">The message.</param>
/// <param name="imageResult">The url string for the converted/failed image.</param>
public async Task UpdateJobEntityStatus(string jobId, int status, string message, string imageResult)
{
JobEntity jobEntityToReplace = await RetrieveJobEntity(jobId);
if (jobEntityToReplace != null)
{
jobEntityToReplace.status = status;
jobEntityToReplace.statusDescription = message;
jobEntityToReplace.imageResult = imageResult;
await UpdateJobEntity(jobEntityToReplace);
}
}
/// <summary>
/// Updates the status of a job entity
/// </summary>
/// <param name="jobId"></param>
/// <param name="status"></param>
/// <param name="message"></param>
/// <returns></returns>
public async Task UpdateJobEntityStatus(JobEntity jobEntity)
{
JobEntity jobEntityToReplace = await RetrieveJobEntity(jobEntity.JobId);
if (jobEntityToReplace != null)
{
jobEntityToReplace.ImageConversionMode = jobEntity.ImageConversionMode;
jobEntityToReplace.Status = jobEntity.Status;
jobEntityToReplace.StatusDescription = jobEntity.StatusDescription;
jobEntityToReplace.ImageSource = jobEntity.ImageSource;
jobEntityToReplace.ImageResult = jobEntity.ImageResult;
await UpdateJobEntity(jobEntityToReplace);
}
}
/// <summary>
/// Inserts the or replace job entity.
/// </summary>
/// <param name="jobId">The job identifier.</param>
/// <param name="status">The status.</param>
/// <param name="message">The message.</param>
/// <param name="imageSource">The url string for the uploaded image.</param>
/// <param name="imageConversionMode">The type of conversion to be processed.</param>
public async Task InsertOrReplaceJobEntity(string jobId, int status, string message, string imageSource, string imageConversionMode)
{
// Map parameters to JobEntity attributes
JobEntity jobEntityToInsertOrReplace = new JobEntity();
jobEntityToInsertOrReplace.RowKey = jobId;
jobEntityToInsertOrReplace.imageConversionMode = imageConversionMode;
jobEntityToInsertOrReplace.status = status;
jobEntityToInsertOrReplace.statusDescription = message;
jobEntityToInsertOrReplace.imageSource = imageSource;
jobEntityToInsertOrReplace.PartitionKey = _partitionKey;
TableOperation insertReplaceOperation = TableOperation.InsertOrReplace(jobEntityToInsertOrReplace);
TableResult result = await _table.ExecuteAsync(insertReplaceOperation);
}
/// <summary>
/// Upserts the given job entity
/// </summary>
/// <param name="jobEntity"></param>
/// <returns></returns>
public async Task InsertOrReplaceJobEntity(JobEntity jobEntity)
{
JobEntity jobEntityToInsertOrReplace = new JobEntity()
{
RowKey = jobEntity.JobId,
ImageConversionMode = jobEntity.ImageConversionMode,
Status = jobEntity.Status,
StatusDescription = jobEntity.StatusDescription,
ImageSource = jobEntity.ImageSource,
ImageResult = jobEntity.ImageResult,
PartitionKey = _partitionKey,
};
TableOperation insertReplaceOperation = TableOperation.InsertOrReplace(jobEntityToInsertOrReplace);
TableResult result = await _table.ExecuteAsync(insertReplaceOperation);
}
public static async Task <IActionResult> Run([HttpTrigger(AuthorizationLevel.Function, "get", Route = "jobs/{id}")] HttpRequest req, string id, ILogger log)
{
if (string.IsNullOrEmpty(id))
{
return(new BadRequestObjectResult("The query string id is required"));
}
if (id.Length > 36)
{
return(new BadRequestObjectResult("An id cannot be greater than 36 characters"));
}
log.LogInformation("[PENDING] Connecting to jobs table...");
JobTable jobTable = new JobTable(log, ConfigSettings.IMAGEJOBS_PARTITIONKEY);
log.LogInformation("[SUCCESS] Connected to Jobs Table");
log.LogInformation("[PENDING] Searching for Job Entity {id}...");
JobEntity jobEntity = await jobTable.RetrieveJobEntity(id);
if (jobEntity == null)
{
log.LogError("Job Entity {id} was not found");
ErrorResponse errorResponse = ErrorResponse.New(ErrorResponseCodes.NOT_FOUND, "JobId", id, ErrorResponseMessages.NOT_FOUND);
return(new NotFoundObjectResult(errorResponse));
}
log.LogInformation("[SUCCESS] Job Entity {id} was found");
JobEntityResponse jobEntityResponse = JobEntityResponse.New(
jobEntity.RowKey, jobEntity.ImageConversionMode, jobEntity.Status, jobEntity.StatusDescription, jobEntity.ImageSource, jobEntity.ImageResult);
return(new OkObjectResult(jobEntityResponse));
}