first commit

nodes/broker/vp_json_kafka_broker_node.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#ifdef VP_WITH_KAFKA
+#include <sstream>
+
+#include "vp_msg_broker_node.h"
+#include "kafka_utils/KafkaProducer.h"
+#include "cereal_archive/vp_objects_cereal_archive.h"
+
+namespace vp_nodes {
+    // message broker node, broke json data to kafka.
+    class vp_json_kafka_broker_node: public vp_msg_broker_node
+    {
+    private:
+        /* data */
+        std::shared_ptr<KafkaProducer> kafka_producer = nullptr;
+    protected:
+        // to json
+        virtual void format_msg(const std::shared_ptr<vp_objects::vp_frame_meta>& meta, std::string& msg) override;
+        // to console
+        virtual void broke_msg(const std::string& msg) override;
+    public:
+        vp_json_kafka_broker_node(std::string node_name, 
+                                    std::string kafka_servers = "127.0.0.1:9092",
+                                    std::string topic_name = "videopipe_topic",
+                                    vp_broke_for broke_for = vp_broke_for::NORMAL, 
+                                    int broking_cache_warn_threshold = 50, 
+                                    int broking_cache_ignore_threshold = 200);
+        ~vp_json_kafka_broker_node();
+    };
+}
+#endif