public static async void Run([EventHubTrigger("%ResultsEH-Name%", Connection = "ResultsEH-ConnectionString")] string[] eventHubMessages,
[CosmosDB(
databaseName: "resultDataDB",
collectionName: "resultCollection",
ConnectionStringSetting = "CosmosDBConnection")]
IAsyncCollector <OffenderResult> finalResult,
ILogger log)
{
// Final result object
List <OffenderResult> finalResultObject = new List <OffenderResult>();
// Each message needs to compare thresholds
foreach (var message in eventHubMessages)
{
log.LogInformation($"C# Event Hub trigger function processed a message: {message}");
ResultStreamObject resultObject = JsonConvert.DeserializeObject <ResultStreamObject>(message);
// For every Offender Result item check the threshold
foreach (var offenderResult in resultObject.ResultList)
{
if ((offenderResult.PI_freq1 > threshold) ||
(offenderResult.PI_freq2 > threshold) ||
(offenderResult.PI_freq3 > threshold) ||
(offenderResult.SIB_freq1 > threshold) ||
(offenderResult.SIB_freq2 > threshold) ||
(offenderResult.SIB_freq3 > threshold) ||
(offenderResult.SIB_Local > threshold))
{
finalResultObject.Add(offenderResult);
await finalResult.AddAsync(offenderResult);
}
}
}
var outputString = JsonConvert.SerializeObject(finalResultObject);
try
{
await finalResult.FlushAsync();
}
catch (Exception ex)
{
log.LogError(ex.Message);
//await Task.Delay(5000);
// do something else with it so its not lost
}
}
public static void Run([EventHubTrigger("%WorkItemEH-Name%", Connection = "WorkItemEH-ConnectionString")] EventData[] myEventHubMessages,
[EventHub("%ResultsEH-Name%", Connection = "ResultsEH-ConnectionString")] IAsyncCollector <EventData> outputEventHubMessages,
ILogger log)
{
MD5 md5 = MD5.Create();
// process messages
foreach (EventData message in myEventHubMessages)
{
string messagePayload = Encoding.UTF8.GetString(message.Body.Array);
// process each message
WorkItemObject myEvent = JsonConvert.DeserializeObject <WorkItemObject>(messagePayload);
try
{
ResultStreamObject result = new ResultStreamObject()
{
SchemaVersion = myEvent.SchemaVersion,
JobDetails = myEvent.JobDetails,
// modify the results here
ResultList = new List <OffenderResult>()
};
// simulated caluclation on payload
Random rNum = new Random();
foreach (var offender in myEvent.OffenderList)
{
OffenderResult newResult = new OffenderResult()
{
Forensic_ID = myEvent.SuspectDetails.Specimen_ID,
Offender_ID = offender.Specimen_ID,
PI_freq1 = rNum.Next(),
PI_freq2 = rNum.Next(),
PI_freq3 = rNum.Next(),
SIB_freq1 = rNum.Next(),
SIB_freq2 = rNum.Next(),
SIB_freq3 = rNum.Next(),
SIB_Local = rNum.Next()
};
result.ResultList.Add(newResult);
}
// craft outbound event
EventData outputEvent = new EventData(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(result)));
outputEventHubMessages.AddAsync(outputEvent).Wait();
}
catch (Exception ex)
{
log.LogError(ex.Message);
// do something else with it so its not lost
}
}
// flush the event hub output, we're doing this and not letting the system so we can do error handling
// note that output batch must not exceed maximum Event Hub batch size
try
{
outputEventHubMessages.FlushAsync().Wait();
}
catch (Exception ex)
{
log.LogError(ex.Message);
//await Task.Delay(5000);
// do something else with it so its not lost
}
}
