upload_approve.cs

[FunctionName("ApproveFileUpload")]
public static async Task<IActionResult> Run(
    [HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "approve/{fileId}")] HttpRequest req,
    [Table("metadata", "{fileId}", "{fileId}", Connection = "TableConnectionString")] FileMetadata fileMetadata,
    [Table("metadata", Connection = "TableConnectionString")] CloudTable metadataTable,
    [DurableClient] IDurableOrchestrationClient client,
    ILogger log)
{
    var instanceId = fileMetadata.WorkflowId;
    fileMetadata.ApprovedForAnalysis = true;
    var replaceOperation = TableOperation.Replace(fileMetadata);
    await metadataTable.ExecuteAsync(replaceOperation);
    await client.RaiseEventAsync(instanceId, "UploadApproved", fileMetadata.ApprovedForAnalysis);
    return new AcceptedResult(string.Empty, fileMetadata.RowKey);
}