protected static async Task <CloudBlockBlob> GetOrSaveOptimizedBlobAsync(CloudBlobContainer siteImagesContainer, IImageOptimizer krakenClient, string siteId, string imageUrl, string optimizedImageName, byte[] imageBytes)
{
System.Diagnostics.Trace.TraceInformation($"Checking for optimized bytes for `{siteId}` site image `{imageUrl}`.");
var optimizedBlob = siteImagesContainer.GetBlockBlobReference($"{OptimizedFolderPrefix}{optimizedImageName}");
bool optimizeExists = await optimizedBlob.ExistsAsync().ConfigureAwait(false);
if (optimizeExists)
{
System.Diagnostics.Trace.TraceInformation($"Optimized bytes exist for `{siteId}` site image `{imageUrl}`.");
await optimizedBlob.FetchAttributesAsync().ConfigureAwait(false);
System.Diagnostics.Trace.TraceInformation($"Optimized bytes exist for `{siteId}` site image `{imageUrl}` with size {optimizedBlob.Properties.Length:D}.");
optimizeExists = optimizedBlob.Properties.Length > 0;
}
if (!optimizeExists)
{
System.Diagnostics.Trace.TraceInformation($"Optimized bytes do not exist for `{siteId}` site image `{imageUrl}`.");
System.Diagnostics.Trace.TraceInformation($"Optimizing `{siteId}` site image `{imageUrl}`.");
var optimizedBytes = await krakenClient.OptimizeBytesAsync(imageBytes, optimizedImageName).ConfigureAwait(false);
System.Diagnostics.Trace.TraceInformation($"Saving optimized bytes for `{siteId}` site image `{imageUrl}`.");
await optimizedBlob.UploadFromByteArrayAsync(optimizedBytes, 0, optimizedBytes.Length).ConfigureAwait(false);
System.Diagnostics.Trace.TraceInformation($"Saved optimized bytes for `{siteId}` site image `{imageUrl}`.");
}
else
{
System.Diagnostics.Trace.TraceInformation($"Using existing optimized bytes for `{siteId}` site image `{imageUrl}`.");
}
return(optimizedBlob);
}
