public async Task <ImageData> ProcessUncached()
{
//Fetch all blobs simultaneously
var blobs = await Task.WhenAll(
allBlobs
.Select(async b =>
(await b.GetBlob())));
//Add all StreamSources
List <InputWatermark> watermarks = null;
if (appliedWatermarks != null)
{
watermarks = new List <InputWatermark>(appliedWatermarks.Count);
watermarks.AddRange(
appliedWatermarks.Select((t, i) =>
{
if (blobs[i + 1] == null)
{
throw new BlobMissingException(
$"Cannot locate watermark \"{t.Name}\" at virtual path \"{t.VirtualPath}\"");
}
return(new InputWatermark(
new StreamSource(blobs[i + 1].OpenRead(), true),
t.Watermark));
}));
}
using var buildJob = new ImageJob();
var jobResult = await buildJob.BuildCommandString(
new StreamSource(blobs[0].OpenRead(), true),
new BytesDestination(), CommandString, watermarks)
.Finish()
.SetSecurityOptions(options.JobSecurityOptions)
.InProcessAsync();
var bytes = jobResult.First.TryGetBytes();
if (!bytes.HasValue || bytes.Value.Count < 1)
{
throw new InvalidOperationException("Image job returned zero bytes.");
}
return(new ImageData
{
ContentType = jobResult.First.PreferredMimeType,
FileExtension = jobResult.First.PreferredExtension,
ResultBytes = bytes.Value
});
}
public async Task TestBuildCommandString()
{
var imageBytes = Convert.FromBase64String("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEX/TQBcNTh/AAAAAXRSTlPM0jRW/QAAAApJREFUeJxjYgAAAAYAAzY3fKgAAAAASUVORK5CYII=");
// We wrap the job in a using() statement to free memory faster
using (var b = new ImageJob())
{
var r = await b.BuildCommandString(
new BytesSource(imageBytes), // or new StreamSource(Stream stream, bool disposeStream)
new BytesDestination(), // or new StreamDestination
"width=3&height=2&mode=stretch&scale=both&format=webp")
.Finish().InProcessAsync();
Assert.Equal(3, r.First.Width);
Assert.Equal("webp", r.First.PreferredExtension);
Assert.True(r.First.TryGetBytes().HasValue);
}
}
public async Task TestBuildCommandStringWithWatermarks()
{
var imageBytes = Convert.FromBase64String("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEX/TQBcNTh/AAAAAXRSTlPM0jRW/QAAAApJREFUeJxjYgAAAAYAAzY3fKgAAAAASUVORK5CYII=");
using (var b = new ImageJob())
{
var watermarks = new List <InputWatermark>();
watermarks.Add(new InputWatermark(new BytesSource(imageBytes), new WatermarkOptions()));
watermarks.Add(new InputWatermark(new BytesSource(imageBytes), new WatermarkOptions().SetGravity(new ConstraintGravity(100, 100))));
var r = await b.BuildCommandString(
new BytesSource(imageBytes),
new BytesDestination(),
"width=3&height=2&mode=stretch&scale=both&format=webp", watermarks).Finish().InProcessAsync();
Assert.Equal(3, r.First.Width);
Assert.Equal("webp", r.First.PreferredExtension);
Assert.True(r.First.TryGetBytes().HasValue);
}
}
public async Task <ImageData> ProcessUncached()
{
//Fetch all blobs simultaneously
var blobs = await Task.WhenAll(
allBlobs
.Select(BlobFetchResult.FromCache));
try
{
//Add all
List <InputWatermark> watermarks = null;
if (appliedWatermarks != null)
{
watermarks = new List <InputWatermark>(appliedWatermarks.Count);
watermarks.AddRange(
appliedWatermarks.Select((t, i) =>
{
if (blobs[i + 1] == null)
{
throw new BlobMissingException(
$"Cannot locate watermark \"{t.Name}\" at virtual path \"{t.VirtualPath}\"");
}
return(new InputWatermark(
blobs[i + 1].GetBytesSource(),
t.Watermark));
}));
}
using var buildJob = new ImageJob();
var jobResult = await buildJob.BuildCommandString(
blobs[0].GetBytesSource(),
new BytesDestination(), CommandString, watermarks)
.Finish()
.SetSecurityOptions(options.JobSecurityOptions)
.InProcessAsync();
GlobalPerf.Singleton.JobComplete(new ImageJobInstrumentation(jobResult)
{
FinalCommandKeys = FinalQuery.Keys,
ImageDomain = ImageDomain,
PageDomain = PageDomain
});
// TryGetBytes returns the buffer from a regular MemoryStream, not a recycled one
var resultBytes = jobResult.First.TryGetBytes();
if (!resultBytes.HasValue || resultBytes.Value.Count < 1 || resultBytes.Value.Array == null)
{
throw new InvalidOperationException("Image job returned zero bytes.");
}
return(new ImageData
{
ContentType = jobResult.First.PreferredMimeType,
ResultBytes = resultBytes.Value
});
}
finally
{
foreach (var b in blobs)
{
b?.Dispose();
}
}
}
