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ryusuke.kamimura avatar image
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Implement re-try logic in RFA API

Hi Refinitiv Team

One of our app teams want to implement a re-try logic if subscription fails (due to timeout, etc) in their application written by RFA API (8.2.0.L2.all).


Do you have any sample code that shows how to implement a re-try logic on app side?

#technologyrfa-api
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raksina.samasiri avatar image   raksina.samasiri

Hi @ryusuke.kamimura ,

Thank you for your participation in the forum. Is the reply below satisfactory in resolving your query?
If so please can you click the 'Accept' text next to the appropriate reply? This will guide all community members who have a similar question.

Thanks,
AHS

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wasin.w avatar image
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Hello @ryusuke.kamimura

I have checked the RFA Java example code. There is no "ready-to-use" re-try subscription logic example. However, the client application can perform the following steps to detect if subscription fail:

  1. Check the processEvent() callback method that if incoming event type is the OMM_ITEM_EVENT --> it means the application receives item response notification.
  2. Check the message type of that OMM_ITEM_EVENT
  3. If the message type is Refresh response message, it means the application receives data.
  4. If the message type is the Status response message, it means there are something with that subscription
  5. Check the Status response message detail (Stream State, Data State, Code, text). If it indicates that the subscription is fail, re-try subscription.

The client can find more detail on the following resources:

  • Section 12.2.6 Handling Inbound Events of the RFA Java Development Guide
  • RFA Java postingConsumer example (this example code shows how to handle Status Response Message via the processEvent() callback)

I hope this information helps.

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Jirapongse avatar image Jirapongse

@ryusuke.kamimura

RFA internally supports request timeout via the following configuration.

1701165209723.png


1701165209723.png (16.1 KiB)
ryusuke.kamimura avatar image ryusuke.kamimura Jirapongse
Hello @Jirapongse

Many thanks for the configuration. Let us see if we can increase timeout value on our side.

ryusuke.kamimura avatar image ryusuke.kamimura

Hello @wasin.w

Many thanks for the detailed steps.

Let me cascade this with our developer.

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