2364632 - Socket Input Adapter: How to retry connection - SAP ESP | SAP Knowledge Base Article

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2364632 - Socket Input Adapter: How to retry connection - SAP ESP

Symptom

  • The SAP Event Stream Processor (ESP) project is using the Socket Input Adapter (e.g. Socket CSV Input Adapter, Socket XML Input Adapter) in Managed Mode.
  • The adapter successfully obtains data from a third party source and publishes it into the ESP project.
  • The adapter's state is CONTINUOUS, indicating that the adapter is running successfully. 
  • When the adapter detects that the socket connection fails, the adapter's state changes to DEAD, as expected.
  • However, when the adapter should detect that the socket connection is available, the adapter's state unexpectedly remains DEAD.
  • The expectation is that the adapter would automatically retry to detect that socket is again available/detectable, so that it would resume obtaining and publishing the data to ESP.
  • Instead, the adapter remains in the DEAD state.
  • Setting the "retry" property to 30 seconds and "keepalive" to TRUE does not change the way the adapter behaves.
  • Setting "keepalive" to FALSE also does not change the way the adapter behaves.
  • The only way to cause the adapter to resume operation is to restart the ESP project or to restart the adapter.
  • How to configure the Socket CSV Input Adapter to automatically restore the state back to CONTINUOUS, without manual intervention?

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Environment

SAP Event Stream Processor (ESP) 5.1

Product

SAP Event Stream Processor 5.1

Keywords

streaming, processing, ESP , KBA , BC-SYB-ESP , Sybase ESP (Event Stream Processor) , How To

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