be/src/testutil/fault-injection-util.h

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#ifndef IMPALA_TESTUTIL_FAULT_INJECTION_UTIL_H
#define IMPALA_TESTUTIL_FAULT_INJECTION_UTIL_H

#include "util/time.h"

#ifndef NDEBUG
  DECLARE_int32(fault_injection_rpc_delay_ms);
  DECLARE_int32(fault_injection_rpc_type);
#endif

namespace impala {

#ifndef NDEBUG
  enum RpcCallType {
    RPC_NULL = 0,
    RPC_EXECPLANFRAGMENT,
    RPC_CANCELPLANFRAGMENT,
    RPC_PUBLISHFILTER,
    RPC_UPDATEFILTER,
    RPC_TRANSMITDATA,
    RPC_REPORTEXECSTATUS,
    RPC_RANDOM    // This must be last.
  };

  /// Test util function that can inject delay to specified RPC server handling
  /// function so that RPC caller could hit the RPC recv timeout condition.
  /// my_type specifies which RPC type the current function is.
  /// rpc_type specifies which RPC function the delay should be enabled.
  /// delay_ms specifies how long the delay should be.
  static void InjectRpcDelay(RpcCallType my_type, int32_t rpc_type, int32_t delay_ms) {
    std::random_device rd;
    srand(rd());
    if (delay_ms == 0) return;
    if (rpc_type == RPC_RANDOM) rpc_type = rand() % RPC_RANDOM;
    if (rpc_type == my_type) SleepForMs(delay_ms);
  }

  #define FAULT_INJECTION_RPC_DELAY(type) InjectRpcDelay(type, \
      FLAGS_fault_injection_rpc_type, FLAGS_fault_injection_rpc_delay_ms)
#else
  #define FAULT_INJECTION_RPC_DELAY(type)
#endif

}
#endif // IMPALA_TESTUTIL_FAULT_INJECTION_UTIL_H