1、启动类改写
package kafka;
import java.util.Properties;
import kafka.metrics.KafkaMetricsReporter1;
import kafka.server.KafkaConfig;
import kafka.server.KafkaServerStartable;
import kafka.utils.Utils;
import kafka.utils.VerifiableProperties;
public class MyKafka {
public static void main(String[] args) {
try {
System.out.println("---gaojingsong-------QQ525354786--");
Properties props = Utils.loadProps("../config/server.properties");
System.out.println(props);
KafkaConfig serverConfig = new KafkaConfig(props);
VerifiableProperties verifiableProperties = new VerifiableProperties(props);
KafkaMetricsReporter1.startReporters(verifiableProperties);
final KafkaServerStartable kafkaServerStartable = new KafkaServerStartable(serverConfig);
System.out.println("--gaojingsong----kafkaServerStartable---");
// attach shutdown handler to catch control-c
Runtime.getRuntime().addShutdownHook(new Thread() {
public void run() {
kafkaServerStartable.shutdown();
}
});
kafkaServerStartable.startup();
kafkaServerStartable.awaitShutdown();
} catch (Exception e) {
e.printStackTrace();
}
System.exit(0);
}
}
报错原因是因为ZK链接超时，我压根就没有启动ZK，至少说明我的程序没有编译时候的语法错误。
二、改写KafkaMetricsReporter类
package kafka.metrics;
import java.util.concurrent.atomic.AtomicBoolean;
import scala.collection.Iterator;
import scala.collection.Seq;
import scala.collection.immutable.List;
import kafka.utils.Utils;
import kafka.utils.VerifiableProperties;
public class KafkaMetricsReporter1 {
static AtomicBoolean ReporterStarted = new AtomicBoolean(false);
public static void startReporters(VerifiableProperties verifiableProps) {
synchronized (ReporterStarted) {
if (ReporterStarted.get() == false) {
KafkaMetricsConfig metricsConfig = new KafkaMetricsConfig(verifiableProps);
Seq<String> seq = Utils.parseCsvList(verifiableProps.getString("kafka.metrics.reporters", ""));
List<String> metrics = seq.toList();
if (metrics.isEmpty()) {
List<String> reporters = metricsConfig.reporters().toList();
Iterator<String> iters = reporters.iterator();
while (iters.hasNext()) {
String con = iters.next();
System.out.println(con);
KafkaMetricsReporter reporter = null;
try {
Class clazz = Class.forName(con);
reporter = (KafkaMetricsReporter) clazz
.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
// KafkaMetricsReporter reporter =
// Utils.createObject[KafkaMetricsReporter](con);
reporter.init(verifiableProps);
if (reporter instanceof KafkaMetricsReporterMBean) {
KafkaMetricsReporterMBean reportermb = (KafkaMetricsReporterMBean) reporter;
Utils.registerMBean(reporter,
reportermb.getMBeanName());
}
}
}
ReporterStarted.set(true);
}
}
}
}