private async Task LinkResources()
{
//_logger.LogInformation("BackgroundService: Checking linking messages from SQS Queue.... ");
Stopwatch stpWatch = new Stopwatch();
stpWatch.Start();
//Check for msgs in a loop
int msgcount, totalMsgCount = 0;
do
{
//Check msgs available in SQS
var msgs = await _awsSQSHelper.ReceiveLinkingMessageAsync();
msgcount = msgs.Count;
totalMsgCount += msgs.Count;
//Iterate on each msg which will contain list of resource
foreach (var msg in msgs)
{
//Get reources from the msg
List <ResourceLinkingInformation> resourceLinkingInfos = JsonConvert.DeserializeObject <List <ResourceLinkingInformation> >(msg.Body);
//List to collect ValidationFacade of each resource
List <ResourceLinkingResult> totalLinkingResult = new List <ResourceLinkingResult>();
var tasks = resourceLinkingInfos.Select(async linkInfo =>
//foreach (ResourceRequestDTO resource in resources)
{
ResourceLinkingResult curlinkingResult = new ResourceLinkingResult
{
PidUri = linkInfo.PidUri,
LinkType = linkInfo.LinkType,
PidUriToLink = linkInfo.PidUriToLink,
Requester = linkInfo.Requester
};
try
{
//Add link
await _resourceService.AddResourceLink(linkInfo.PidUri, linkInfo.LinkType, linkInfo.PidUriToLink, linkInfo.Requester);
//Collect result
curlinkingResult.Status = "Linked";
curlinkingResult.TimeTaken = stpWatch.ElapsedMilliseconds.ToString();
curlinkingResult.Message = "Linked Successfully";
}
catch (System.Exception ex)
{
//Collect result
curlinkingResult.Status = "Error";
curlinkingResult.TimeTaken = stpWatch.ElapsedMilliseconds.ToString();
curlinkingResult.Message = ex.Message;
}
totalLinkingResult.Add(curlinkingResult);
});
await Task.WhenAll(tasks);
//Send msg to output queue and delete message from input queue
if (await _awsSQSHelper.SendLinkingMessageAsync(totalLinkingResult))
{
await _awsSQSHelper.DeleteLinkingMessageAsync(msg.ReceiptHandle);
}
}
} while (msgcount > 0);
stpWatch.Stop();
if (totalMsgCount > 0)
{
//_logger.LogInformation("BackgroundService: Linked {totMsgCount} resources in {milsec} Milliseconds.", totalMsgCount, stpWatch.ElapsedMilliseconds);
}
}
public async Task <IActionResult> CreateResourceLinkAsync([FromQuery] string pidUri, [FromQuery] string linkType, [FromQuery] string pidUriToLink, [FromQuery] string requester)
{
var result = await _resourceService.AddResourceLink(pidUri, linkType, pidUriToLink, requester);
return(Ok(result));
}
