public static async Task <object> Run([HttpTrigger("post", WebHookType = "genericJson")] HttpRequestMessage req, TraceWriter log, ExecutionContext executionContext)
{
log.Info("GenerateManifest requested.");
var gmRequest = await req.Content.ReadAsAsync <GenerateManifestRequest>();
// Sanity checks
#region Sanity checks
if (gmRequest == null || gmRequest.AssetId == null)
{
return(req.CreateResponse(HttpStatusCode.BadRequest, new
{
error = "Invalid generate manifest request."
}));
}
#endregion
// Create and cache the Media Services credentials in a static class variable
_cachedCredentials = new MediaServicesCredentials(_mediaServicesAccountName, _mediaServicesAccountKey);
// Used the cached credentials to create CloudMediaContext
_context = new CloudMediaContext(_cachedCredentials);
// Get the asset
var asset = _context.Assets.Where(a => a.Id == gmRequest.AssetId).FirstOrDefault();
if (asset == null)
{
return(req.CreateResponse(HttpStatusCode.NotFound, new
{
error = $"Asset {gmRequest.AssetId} doesn't exist."
}));
}
log.Info("Found the asset. Generating manifest.ism");
try
{
var manifestFilePath = executionContext.FunctionDirectory + @"\..\bin\shared\Manifest.ism";
var smildata = ManifestHelper.LoadAndUpdateManifestTemplate(asset, manifestFilePath);
var smilXMLDocument = XDocument.Parse(smildata.Content);
// Check if the manifest file exists
if (asset.AssetFiles.Where(af => af.Name == smildata.FileName).FirstOrDefault() != null)
{
// Do nothing
log.Info("Manifest already exists.");
return(req.CreateResponse(HttpStatusCode.OK, new
{
message = "Manifest already exists"
}));
}
var smildataAssetFile = asset.AssetFiles.Create(smildata.FileName);
var stream = new MemoryStream(); // Create a stream
smilXMLDocument.Save(stream); // Save XDocument into the stream
stream.Position = 0; // Rewind the stream ready to read from it elsewhere
smildataAssetFile.Upload(stream);
// Update the asset to set the primary file as the ism file
ManifestHelper.SetFileAsPrimary(asset, smildata.FileName);
}
catch (Exception ex)
{
log.Error("Could not generate the manifest.");
log.Error(ex.ToString());
return(req.CreateResponse(HttpStatusCode.InternalServerError, new
{
error = $"Could not generate the manifest. Are you sure the asset contains media files (mp4, m4a)?."
}));
}
// Fetching the name from the path parameter in the request URL
return(req.CreateResponse(HttpStatusCode.Created, new
{
message = "Manifest created"
}));
}
