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more detailed CxxModule logging

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Cxx module code swallows c++ exception details with sarcastic comment let native developer figure it out.

Now instead of swallowing it, we print as much information as we can for different exception types.
Still not ideal but way more informative.

Have a crash in your c++ module and try to figure it out without this change.
Closes #16193

Differential Revision: D6040038

Pulled By: javache

fbshipit-source-id: 3fbe838383ca13395e21f74c9549474f6329cfeb
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dryganets authored and facebook-github-bot committed Oct 12, 2017
1 parent 224d294 commit 4192790f05269181a1f50f31ce94e20c9a8ea2bf
Showing with 8 additions and 4 deletions.
  1. +8 −4 ReactCommon/cxxreact/CxxNativeModule.cpp
@@ -4,15 +4,14 @@
#include "Instance.h"
#include <iterator>
#include <glog/logging.h>
#include <folly/json.h>
#include "JsArgumentHelpers.h"
#include "SystraceSection.h"
#include "MessageQueueThread.h"
using facebook::xplat::module::CxxModule;
namespace facebook {
namespace react {
@@ -140,9 +139,14 @@ void CxxNativeModule::invoke(unsigned int reactMethodId, folly::dynamic&& params
method.func(std::move(params), first, second);
} catch (const facebook::xplat::JsArgumentException& ex) {
} catch (std::exception& e) {
LOG(ERROR) << "std::exception. Method call " << << " failed: " << e.what();
} catch (std::string& error) {
LOG(ERROR) << "std::string. Method call " << << " failed: " << error.c_str();
} catch (...) {
// This means some C++ code is buggy. As above, we fail hard so the C++
// developer can debug and fix it.
LOG(ERROR) << "Method call " << << " failed. unknown error";

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