hunyadi-dev commented on a change in pull request #776:
URL: https://github.com/apache/nifi-minifi-cpp/pull/776#discussion_r428105220
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File path: libminifi/src/c2/C2Agent.cpp
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@@ -75,54 +78,55 @@ C2Agent::C2Agent(const
std::shared_ptr<core::controller::ControllerServiceProvid
c2_producer_ = [&]() {
// place priority on messages to send to the c2 server
- if (protocol_.load() != nullptr &&
request_mutex.try_lock_for(std::chrono::seconds(1))) {
- std::lock_guard<std::timed_mutex> lock(request_mutex, std::adopt_lock);
- if (!requests.empty()) {
- int count = 0;
- do {
- const C2Payload payload(std::move(requests.back()));
- requests.pop_back();
- try {
- C2Payload && response =
protocol_.load()->consumePayload(payload);
- enqueue_c2_server_response(std::move(response));
- }
- catch(const std::exception &e) {
- logger_->log_error("Exception occurred while consuming payload.
error: %s", e.what());
- }
- catch(...) {
- logger_->log_error("Unknonwn exception occurred while consuming
payload.");
- }
- }while(!requests.empty() && ++count < max_c2_responses);
+ if (protocol_.load() != nullptr) {
+ std::vector<C2Payload> payload_batch;
+ payload_batch.reserve(max_c2_responses);
+ auto getRequestPayload = [&payload_batch] (C2Payload&& payload) {
payload_batch.emplace_back(std::move(payload)); };
+ const std::chrono::system_clock::time_point timeout_point =
std::chrono::system_clock::now() + std::chrono::milliseconds(1);
+ for (std::size_t attempt_num = 0; attempt_num < max_c2_responses;
++attempt_num) {
+ if (!requests.consumeWaitUntil(getRequestPayload, timeout_point)) {
Review comment:
Good catch, we want to wait 1 second not 1 millisecond on locking.
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