public static async Task Run([BlobTrigger(Constants.FailureOutputContainerName + "/{name}", Connection = Constants.AzureStorageConnectionStringEntry)] CloudBlockBlob cloudBlockBlob, string name, ILogger log)
{
log.LogInformation("Running ImageStatusUpdaterFailed");
await cloudBlockBlob.FetchAttributesAsync();
if (cloudBlockBlob.Metadata.ContainsKey(Constants.JobIdMetaData))
{
string jobId = cloudBlockBlob.Metadata[Constants.JobIdMetaData];
log.LogInformation($"Found unsuccessfully converted blob {cloudBlockBlob.Name} with JobId {jobId}");
try
{
Jobs.JobsTable jobTable = new Jobs.JobsTable();
await jobTable.UpdateJobStatus(jobId, Jobs.JobStatusCode.Failure, null, cloudBlockBlob.Uri.AbsoluteUri);
log.LogInformation($"Successfully updated JobId {jobId} to status Failure");
}
catch (Exception ex)
{
log.LogError($"Could not update status of jobId: {jobId}: {ex.Message}");
}
}
else
{
log.LogError($"Error: {cloudBlockBlob.Name} has no {Constants.JobIdMetaData} metadata key.");
}
}
public static async Task Run([TimerTrigger("0 */2 * * * *")] TimerInfo myTimer, ILogger log)
{
log.LogInformation($"Cleanup starting at: {DateTime.Now}");
Jobs.JobsTable jobTable = new Jobs.JobsTable();
List <Jobs.Job> jobsToClean = (await jobTable.RetrieveAllJobs())
.Where(j => j.status == (int)Jobs.JobStatusCode.Success && j.imageSource != null)
.ToList();
log.LogInformation($"Found {jobsToClean.Count} successful conversion jobs to clean up");
CloudStorageAccount storageAccount = Access.GetCloudStorageAccount();
await Task.WhenAll(
jobsToClean.Select(j =>
{
CloudBlockBlob blob = new CloudBlockBlob(new Uri(j.imageSource), storageAccount.Credentials);
return(blob.DeleteIfExistsAsync()
// Then update table to have no image source
.ContinueWith(c => {
j.imageSource = null;
return jobTable.UpdateJob(j);
}));
})
);
}
public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = "v1/jobs")] HttpRequest req,
ILogger log)
{
log.LogInformation("Getting status of all jobs");
try
{
Jobs.JobsTable jobTable = new Jobs.JobsTable();
return(new OkObjectResult(
(await jobTable.RetrieveAllJobs())
.ConvertAll <DTOJobStatus>(j => new DTOJobStatus(j))
.ToList()
));
}
catch (Exception ex)
{
log.LogError($"Unable to retrieve jobs from job table: {ex.Message}");
return(new OkObjectResult(new List <DTOJobStatus>()));
}
}
public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = "v1/jobs/{id}")] HttpRequest req,
string id,
ILogger log)
{
log.LogInformation($"Getting status of job {id}");
try
{
Jobs.JobsTable jobTable = new Jobs.JobsTable();
return(new OkObjectResult(
new DTOJobStatus(
await jobTable.RetrieveJob(id)
)
));
}
catch (Exception ex)
{
log.LogError($"Unable to retrieve job {id}: {ex.Message}");
return(new NotFoundObjectResult(new ErrorResponse(ErrorCode.NotFound, "id", id)));
}
}
public static async Task Run([BlobTrigger(Constants.GreyScaleInputContainerName + "/{name}", Connection = Constants.AzureStorageConnectionStringEntry)] CloudBlockBlob cloudBlockBlob, string name, ILogger log)
{
log.LogInformation("Running ImageConsumerGreyScale");
string convertedBlobName = $"{Guid.NewGuid().ToString()}-{name}";
string jobId = Guid.NewGuid().ToString();
log.LogInformation($"Associations: Converted Name: {convertedBlobName}, JobId: {jobId}");
// Add job to jobs table
// (if fails, will not put image into failure container
Jobs.JobsTable jobTable = new Jobs.JobsTable();
await jobTable.InsertOrReplaceJob(new Jobs.Job(
jobId,
Constants.GreyScaleMode,
Jobs.JobStatusCode.Received,
cloudBlockBlob.Uri.AbsoluteUri
));
// Try to open image
// (if can't open, then no way we can put it in failure container!)
using (Stream blobStream = await cloudBlockBlob.OpenReadAsync())
{
try {
// Try to get output container
// (if fails, will try to put image in failure container)
// (doing now so we can fail early if something is wrong!)
CloudBlobContainer successContainer = Access.GetSuccessOutputContainer();
await successContainer.CreateIfNotExistsAsync();
// Update job status to converting
// (if fails, will log and still try to convert image)
try
{
await jobTable.UpdateJobStatus(jobId, Jobs.JobStatusCode.Converting);
} catch (Exception ex)
{
log.LogError($"Could not update status of jobId: {jobId}: {ex.Message}");
}
// Try to convert and upload
// (if fails, will try to put image in failure container)
blobStream.Seek(0, SeekOrigin.Begin);
using (MemoryStream convertedMemoryStream = new MemoryStream())
using (Image <Rgba32> image = Image.Load(blobStream)) {
log.LogInformation($"Starting conversion of image {convertedBlobName}");
image.Mutate(x => x.Grayscale());
image.SaveAsJpeg(convertedMemoryStream);
convertedMemoryStream.Seek(0, SeekOrigin.Begin);
log.LogInformation($"Completed conversion of image {convertedBlobName}");
log.LogInformation($"Storing image {convertedBlobName} into {Constants.SuccessOutputContainerName} container");
// Upload to success container
CloudBlockBlob convertedBlockBlob = successContainer.GetBlockBlobReference(convertedBlobName);
convertedBlockBlob.Metadata.Add(Constants.JobIdMetaData, jobId);
convertedBlockBlob.Properties.ContentType = System.Net.Mime.MediaTypeNames.Image.Jpeg;
await convertedBlockBlob.UploadFromStreamAsync(convertedMemoryStream);
log.LogInformation($"Stored image {convertedBlobName} into {Constants.SuccessOutputContainerName} container");
}
} catch (Exception ex) {
log.LogError($"Failed to convert blob {name}. {ex.Message}");
log.LogInformation($"Storing image {convertedBlobName} into {Constants.FailureOutputContainerName} container");
try {
// Try to get failure container
// (if fails, then hard fail.)
CloudBlobContainer failureContainer = Access.GetFailureOutputContainer();
await failureContainer.CreateIfNotExistsAsync();
// Try to upload failed image.
// (if fails, then hard fail)
CloudBlockBlob failedBlockBlob = failureContainer.GetBlockBlobReference(convertedBlobName);
failedBlockBlob.Metadata.Add(Constants.JobIdMetaData, jobId);
blobStream.Seek(0, SeekOrigin.Begin);
await failedBlockBlob.UploadFromStreamAsync(blobStream);
log.LogInformation($"Stored image {convertedBlobName} into {Constants.FailureOutputContainerName} container");
} catch (Exception ex2) {
// Hard fail.
log.LogError($"Failed to store blob {name} into {Constants.FailureOutputContainerName}. {ex2.Message}");
}
}
}
}
