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Handle the case where polling for decision tasks fails due to the fac… #8

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Handle the case where polling for decision tasks fails due to the fac… #8

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12 changes: 11 additions & 1 deletion src/main/java/com/amazonaws/services/simpleworkflow/flow/worker/DecisionTaskPoller.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.services.simpleworkflow.AmazonSimpleWorkflow;
import com.amazonaws.services.simpleworkflow.flow.common.WorkflowExecutionUtils;
import com.amazonaws.services.simpleworkflow.model.DecisionTask;
Expand Down Expand Up @@ -168,7 +169,16 @@ private DecisionTask poll(String nextResultToken) {
if (log.isDebugEnabled()) {
log.debug("poll request begin: " + pollRequest);
}
DecisionTask result = service.pollForDecisionTask(pollRequest);
DecisionTask result;
try {
result = service.pollForDecisionTask(pollRequest);
} catch (AmazonServiceException e) {
if (log.isDebugEnabled()) {
log.debug("poll request failed due to " + e.getMessage() + " retrying without a next page token");
}
pollRequest.setNextPageToken(null);
result = service.pollForDecisionTask(pollRequest);
}
if (log.isDebugEnabled()) {
log.debug("poll request returned decision task: workflowType=" + result.getWorkflowType() + ", workflowExecution="
+ result.getWorkflowExecution() + ", startedEventId=" + result.getStartedEventId() + ", previousStartedEventId=" + result.getPreviousStartedEventId());
Expand Down