Kafka Push Message (Producer) _kafka

Store map
public static map<string, islicodelog> Logmap = Collections
. Synchronizedmap (New hashmap<string, islicodelog> ());
Theme
public static String Mytopic = systemconfig.getstring ("Kafka_log_topic");
Service Code
public static String Sccode = systemconfig.getstring ("code");


/**
* 1. Log directly to Kafka server; 2. If Kafka downtime, log is saved to database
*
* @param log
* Log Entity
*/
public void Pushlogtokafka () {


if (Loglock.trylock ()) {
producer<string, string> Producer = null;
try {
if (logmap.size () > 0) {

Producer = new Kafkautil (). Getproducer ();
Traversing a map using iterator
For (map.entry<string, islicodelog> Entry:logmap
. EntrySet ()) {
if (null = = Entry) {
Break
}


Logger.info ("logmap.size=======>>>>>" + logmap.size ());
Islicodelog log = Entry.getvalue ();
if (null!= log) {
Log.setservicecode (Sccode);//Service Code
producerrecord<string, string> record = new producerrecord<string, string> (
Mytopic, Log.getislicode (),
Jsonutils.tojson (log));


/**
* Post message (asynchronous)
*
* 1.kafka server is normal, log sent directly to Kafka
*
* 2. The problem is: Kafka downtime, send () do not throw exceptions, this case log inserted into the database
*
*/
Producer.send (Record,
New Pushlogtokafkacallback (entry));
}
}
}


catch (Exception e) {
Logger.error ("[Parseislicodeservice.pushlogtokafka] Error:"
+ e.getmessage ());
finally {


if (null!= producer) {
Producer.close ();
}


Loglock.unlock ();


}
}


}




/**
* Log message pushed to Kafka callback function class
*
* @author WUJH
*
*/
Class Pushlogtokafkacallback implements Callback {


Private map.entry<string, islicodelog> Entry;


Pushlogtokafkacallback (map.entry<string, islicodelog> Entry) {
This.entry = entry;
}


@Override
public void Oncompletion (Recordmetadata metadata, Exception e) {
try {
if (null!= e) {
Parseislicodelogdao.insertislicodelog (Entry.getvalue ());
Logger.error ("Pushlogtokafkacallback[oncompletion] Error:"
+ e.getmessage ());
}
catch (Exception ex) {
Logger.error ("pushlogtokafkacallback[oncompletion] Catch_error:"
+ ex.getmessage ());
finally {
String key = Entry.getkey ();
if (Logmap.containskey (key)) {
Logmap.remove (Entry.getkey ());//delete map
}
}
}


}