msharee9 commented on a change in pull request #734: MINIFICPP-1157 Implement
lightweight C2 heartbeat.
URL: https://github.com/apache/nifi-minifi-cpp/pull/734#discussion_r378462016
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File path: libminifi/src/c2/C2Agent.cpp
##########
@@ -315,16 +317,35 @@ void C2Agent::performHeartBeat() {
payload.addPayload(std::move(deviceInfo));
}
- if (!root_response_nodes_.empty()) {
- for (auto metric : root_response_nodes_) {
- C2Payload child_metric_payload(Operation::HEARTBEAT);
- child_metric_payload.setLabel(metric.first);
- if (metric.second->isArray()) {
- child_metric_payload.setContainer(true);
- }
- serializeMetrics(child_metric_payload, metric.first,
metric.second->serialize(), metric.second->isArray());
- payload.addPayload(std::move(child_metric_payload));
+ for (auto metric : root_response_nodes_) {
+ C2Payload child_metric_payload(Operation::HEARTBEAT);
+ bool isArray{false};
+ std::string metricName;
+ std::vector<state::response::SerializedResponseNode> metrics;
+ std::shared_ptr<state::response::NodeReporter> reporter;
+ std::shared_ptr<state::response::ResponseNode> agentInfoManifest;
+
+ //Send agent manifest in first heartbeat
+ if (!manifest_sent_
+ && (reporter =
std::dynamic_pointer_cast<state::response::NodeReporter>(update_sink_))
+ && (agentInfoManifest = reporter->getAgentInformationWithManifest())
+ && metric.first == agentInfoManifest->getName()) {
+
+ metricName = agentInfoManifest->getName();
+ isArray = agentInfoManifest->isArray();
+ metrics = std::move(agentInfoManifest->serialize());
+ manifest_sent_ = true;
Review comment:
If C2 server does not receive the manifest in the first heartbeat, it
requests manifest in DESCRIBE command when it next receives lightweight
heartbeat. Sending the manifest during the first heartbeat is a slight
optimization.
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