// For describing InvokeStrings.
        private async Task <BlobBaseClient> ConvertFromInvokeString(DirectInvokeString input, Attribute attr, ValueBindingContext context)
        {
            var attrResolved = (BlobTriggerAttribute)attr;

            var      client    = _blobServiceClientProvider.Get(attrResolved.Connection);
            BlobPath path      = BlobPath.ParseAndValidate(input.Value);
            var      container = client.GetBlobContainerClient(path.ContainerName);
            var      blob      = await container.GetBlobReferenceFromServerAsync(path.BlobName).ConfigureAwait(false);

            return(blob.Client);
        }
        public Task <ITriggerBinding> TryCreateAsync(TriggerBindingProviderContext context)
        {
            ParameterInfo parameter            = context.Parameter;
            var           blobTriggerAttribute = TypeUtility.GetResolvedAttribute <BlobTriggerAttribute>(context.Parameter);

            if (parameter.ParameterType == typeof(PageBlobClient) && blobTriggerAttribute.Source == BlobTriggerSource.EventGrid)
            {
                _logger.LogError($"PageBlobClient is not supported with {nameof(BlobTriggerSource.EventGrid)}");
                return(Task.FromResult <ITriggerBinding>(null));
            }

            if (blobTriggerAttribute == null)
            {
                return(Task.FromResult <ITriggerBinding>(null));
            }

            string          resolvedCombinedPath = Resolve(blobTriggerAttribute.BlobPath);
            IBlobPathSource path = BlobPathSource.Create(resolvedCombinedPath);

            var hostBlobServiceClient  = _blobServiceClientProvider.GetHost();
            var dataBlobServiceClient  = _blobServiceClientProvider.Get(blobTriggerAttribute.Connection, _nameResolver);
            var hostQueueServiceClient = _queueServiceClientProvider.GetHost();
            var dataQueueServiceClient = _queueServiceClientProvider.Get(blobTriggerAttribute.Connection, _nameResolver);

            // premium does not support blob logs, so disallow for blob triggers
            // $$$
            // dataAccount.AssertTypeOneOf(StorageAccountType.GeneralPurpose, StorageAccountType.BlobOnly);

            ITriggerBinding binding = new BlobTriggerBinding(parameter, hostBlobServiceClient, hostQueueServiceClient,
                                                             dataBlobServiceClient, dataQueueServiceClient, path, blobTriggerAttribute.Source,
                                                             _hostIdProvider, _blobsOptions, _exceptionHandler, _blobWrittenWatcherSetter,
                                                             _blobTriggerQueueWriterFactory, _sharedContextProvider, _singletonManager, _loggerFactory);

            return(Task.FromResult(binding));
        }