Question 104556 in Azure Question posted in
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Is it possible that 2 azure functions can get triggered by one eventhub?

Is it possible that 2 azure functions can get triggered by one eventhub? One azure function will write its data to database1 and the other azure function writes its data to database2

[FunctionName("EventToDB1")]
public async System.Threading.Tasks.Task Run([EventHubTrigger("eventhub", Connection = "Debezium")]  
    EventData[] events, ILogger log)
    {
       
            {
[FunctionName("EventToDB2")]
public async System.Threading.Tasks.Task Run([EventHubTrigger("eventhub", Connection = "Debezium")]  
        EventData[] events, ILogger log)
     {
        
            {

answer on the possibility of having 2 azure functions get triggered by one eventhub

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2

Answers


  1. 0

    Yes that is possible by using different consumer groups. Because you specified the same connection to the Event Hub, being "Debezium", I Assume you want both funtions to process the same message. You have to create a new consumer group and specify the name using the ConsumerGroup property of the EventHubTrigger attribute (The default consumergroup is $Default):

    public class EventToDB1
{
    [FunctionName("EventToDB1")]
    public async System.Threading.Tasks.Task Run(
            [EventHubTrigger("eventhub",
        Connection = "Debezium",
        ConsumerGroup = "CG1")]
        EventData[] events, ILogger log)
    {

    }
}

public class EventToDB2
{
    [FunctionName("EventToDB2")]
    public async System.Threading.Tasks.Task Run(
        [EventHubTrigger("eventhub",
        Connection = "Debezium",
        ConsumerGroup = "CG2")]
        EventData[] events, ILogger log)
    {

    }
}

    Each consumer group receives the same messages from the Event Hub.

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  2. 0

    I do agree with @peter bons, you need to create two consumer groups for that and you can create two consumers by below process:

    enter image description here

    You can also use logic apps to work with event hubs.

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