com.datastax.driver.core.DriverThrowables Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* This software can be used solely with DataStax Enterprise. Please consult the license at
* http://www.datastax.com/terms/datastax-dse-driver-license-terms
*/
package com.datastax.driver.core;
import com.datastax.driver.core.exceptions.DriverException;
import com.datastax.driver.core.exceptions.DriverInternalError;
import java.util.concurrent.ExecutionException;
class DriverThrowables {
static RuntimeException propagateCause(ExecutionException e) {
Throwable cause = e.getCause();
if (cause instanceof Error) throw ((Error) cause);
// We could just rethrow e.getCause(). However, the cause of the ExecutionException has likely
// been
// created on the I/O thread receiving the response. Which means that the stacktrace associated
// with said cause will make no mention of the current thread. This is painful for say, finding
// out which execute() statement actually raised the exception. So instead, we re-create the
// exception.
if (cause instanceof DriverException) throw ((DriverException) cause).copy();
else throw new DriverInternalError("Unexpected exception thrown", cause);
}
}