fix: Updated dropwizard3 to a version with the separated jmx module.

pom.xml

@@ -24,7 +24,7 @@
 
   <artifactId>ratis</artifactId>
   <groupId>org.apache.ratis</groupId>
-  <version>2.5.2-a4398bf-SNAPSHOT</version>
+  <version>2.5.2-c97b814-SNAPSHOT</version>
   <name>Apache Ratis</name>
   <packaging>pom</packaging>
   <description>
@@ -182,7 +182,7 @@
     <build-helper-maven-plugin.version>3.3.0</build-helper-maven-plugin.version>
     <exec-maven-plugin.version>3.1.0</exec-maven-plugin.version>
     <extra-enforcer-rules.version>1.6.1</extra-enforcer-rules.version>
-    <license-maven-plugin.version>4.1</license-maven-plugin.version>
+    <license-maven-plugin.version>2.2.0</license-maven-plugin.version>
 
     <protobuf-maven-plugin.version>0.6.1</protobuf-maven-plugin.version>
     <copy-rename-maven-plugin.version>1.0</copy-rename-maven-plugin.version>
@@ -219,7 +219,7 @@
     <testsThreadCount>4</testsThreadCount>
 
     <!--metrics-->
-    <dropwizard.version>3.2.5</dropwizard.version>
+    <dropwizard.version>4.2.9</dropwizard.version>
 
     <slf4j.version>2.0.7</slf4j.version>
   </properties>
@@ -414,13 +414,13 @@
 
       <dependency>
         <groupId>io.dropwizard.metrics</groupId>
-        <artifactId>metrics-jvm</artifactId>
+        <artifactId>metrics-jmx</artifactId>
         <version>${dropwizard.version}</version>
       </dependency>
 
       <dependency>
         <groupId>io.dropwizard.metrics</groupId>
-        <artifactId>metrics-ganglia</artifactId>
+        <artifactId>metrics-jvm</artifactId>
         <version>${dropwizard.version}</version>
       </dependency>
 

ratis-assembly/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-assembly</artifactId>

ratis-client/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-client</artifactId>

ratis-common/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-common</artifactId>

ratis-common/src/main/java/org/apache/ratis/util/StringUtils.java

@@ -24,6 +24,7 @@
 
 import java.io.PrintWriter;
 import java.io.StringWriter;
+import java.nio.Buffer;
 import java.nio.ByteBuffer;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
@@ -113,7 +114,9 @@ public static String bytes2HexString(ByteBuffer bytes) {
     for(; bytes.remaining() > 0; ) {
       s.append(format("%02x", bytes.get()));
     }
-    bytes.flip();
+    // This cast avoids compatability issues with Java 8
+    // In Java 8 ByteBuffer doesn't have a "flip()" method.
+    ((Buffer) bytes).flip();
     return s.toString();
   }
 

ratis-docs/pom.xml

@@ -20,7 +20,7 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-docs</artifactId>

ratis-examples/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-examples</artifactId>

ratis-experiments/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-experiments</artifactId>

ratis-grpc/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-grpc</artifactId>

ratis-metrics/pom.xml

@@ -18,7 +18,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-metrics</artifactId>
@@ -62,18 +62,11 @@
     </dependency>
     <dependency>
       <groupId>io.dropwizard.metrics</groupId>
-      <artifactId>metrics-jvm</artifactId>
-      <optional>true</optional>
+      <artifactId>metrics-jmx</artifactId>
     </dependency>
     <dependency>
       <groupId>io.dropwizard.metrics</groupId>
-      <artifactId>metrics-ganglia</artifactId>
-      <exclusions>
-        <exclusion>
-          <groupId>org.acplt</groupId>
-          <artifactId>oncrpc</artifactId>
-        </exclusion>
-      </exclusions>
+      <artifactId>metrics-jvm</artifactId>
       <optional>true</optional>
     </dependency>
   </dependencies>

ratis-metrics/src/main/java/org/apache/ratis/metrics/MetricsReporting.java

@@ -21,8 +21,8 @@
 import java.util.function.Consumer;
 
 import com.codahale.metrics.ConsoleReporter;
-import com.codahale.metrics.JmxReporter;
-import com.codahale.metrics.JmxReporter.Builder;
+import com.codahale.metrics.jmx.JmxReporter;
+import com.codahale.metrics.jmx.JmxReporter.Builder;
 import org.apache.ratis.util.TimeDuration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -53,9 +53,9 @@ public static Consumer<RatisMetricRegistry> stopConsoleReporter() {
 
   public static Consumer<RatisMetricRegistry> jmxReporter() {
     return registry -> {
-      Builder builder =
-          JmxReporter.forRegistry(registry.getDropWizardMetricRegistry());
+      Builder builder = JmxReporter.forRegistry(registry.getDropWizardMetricRegistry());
       builder.inDomain(registry.getMetricRegistryInfo().getApplicationName());
+      builder.createsObjectNamesWith(new RatisObjectNameFactory());
       JmxReporter reporter = builder.build();
       reporter.start();
 

ratis-metrics/src/main/java/org/apache/ratis/metrics/RatisMetricRegistry.java

@@ -23,13 +23,13 @@
 import com.codahale.metrics.Counter;
 import com.codahale.metrics.Gauge;
 import com.codahale.metrics.Histogram;
-import com.codahale.metrics.JmxReporter;
 import com.codahale.metrics.Meter;
 import com.codahale.metrics.Metric;
 import com.codahale.metrics.MetricFilter;
 import com.codahale.metrics.MetricRegistry;
 import com.codahale.metrics.MetricSet;
 import com.codahale.metrics.Timer;
+import com.codahale.metrics.jmx.JmxReporter;
 import org.apache.ratis.thirdparty.com.google.common.annotations.VisibleForTesting;
 
 public interface RatisMetricRegistry {

ratis-metrics/src/main/java/org/apache/ratis/metrics/RatisObjectNameFactory.java

@@ -0,0 +1,50 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ratis.metrics;
+
+import com.codahale.metrics.jmx.JmxReporter;
+import com.codahale.metrics.jmx.ObjectNameFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.management.MalformedObjectNameException;
+import javax.management.ObjectName;
+
+public class RatisObjectNameFactory implements ObjectNameFactory {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(JmxReporter.class);
+
+    @Override
+    public ObjectName createName(String type, String domain, String name) {
+        try {
+            ObjectName objectName = new ObjectName(domain, "name", name);
+            if (objectName.isPattern()) {
+                objectName = new ObjectName(domain, "name", ObjectName.quote(name));
+            }
+            return objectName;
+        } catch (MalformedObjectNameException e) {
+            try {
+                return new ObjectName(domain, "name", ObjectName.quote(name));
+            } catch (MalformedObjectNameException e1) {
+                LOGGER.warn("Unable to register {} {}", type, name, e1);
+                throw new RuntimeException(e1);
+            }
+        }
+    }
+}

ratis-metrics/src/main/java/org/apache/ratis/metrics/impl/RatisMetricRegistryImpl.java

@@ -25,14 +25,14 @@
 import com.codahale.metrics.Counter;
 import com.codahale.metrics.Gauge;
 import com.codahale.metrics.Histogram;
-import com.codahale.metrics.JmxReporter;
 import com.codahale.metrics.Meter;
 import com.codahale.metrics.Metric;
 import com.codahale.metrics.MetricFilter;
 import com.codahale.metrics.MetricRegistry;
 import com.codahale.metrics.MetricRegistry.MetricSupplier;
 import com.codahale.metrics.MetricSet;
 import com.codahale.metrics.Timer;
+import com.codahale.metrics.jmx.JmxReporter;
 import org.apache.ratis.metrics.MetricRegistryInfo;
 import org.apache.ratis.metrics.RatisMetricRegistry;
 import org.apache.ratis.thirdparty.com.google.common.annotations.VisibleForTesting;

ratis-netty/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-netty</artifactId>

ratis-proto/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-proto</artifactId>

ratis-replicated-map/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-replicated-map</artifactId>

ratis-resource-bundle/pom.xml

@@ -23,8 +23,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
-    <relativePath>..</relativePath>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-resource-bundle</artifactId>

ratis-resource-bundle/src/main/resources/supplemental-models.xml

@@ -50,20 +50,6 @@ under the License.
       </licenses>
     </project>
   </supplement>
-  <supplement>
-    <project>
-      <groupId>io.dropwizard.metrics</groupId>
-      <artifactId>metrics-ganglia</artifactId>
-
-      <licenses>
-        <license>
-          <name>Apache License, Version 2.0</name>
-          <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
-          <distribution>repo</distribution>
-        </license>
-      </licenses>
-    </project>
-  </supplement>
   <supplement>
     <project>
       <groupId>io.dropwizard.metrics</groupId>

ratis-server-api/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-server-api</artifactId>

ratis-server/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-server</artifactId>

ratis-server/src/test/java/org/apache/ratis/server/metrics/TestLeaderElectionMetrics.java

@@ -23,17 +23,21 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
+import com.codahale.metrics.Gauge;
+import org.apache.ratis.BaseTest;
 import org.apache.ratis.metrics.RatisMetricRegistry;
 import org.apache.ratis.protocol.RaftGroupId;
 import org.apache.ratis.protocol.RaftGroupMemberId;
 import org.apache.ratis.protocol.RaftPeerId;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
+import java.util.SortedMap;
+
 /**
  * Test for LeaderElectionMetrics.
  */
-public class TestLeaderElectionMetrics {
+public class TestLeaderElectionMetrics extends BaseTest {
 
   private static LeaderElectionMetrics leaderElectionMetrics;
   private static RatisMetricRegistry ratisMetricRegistry;
@@ -48,15 +52,17 @@ public static void setUp() {
   }
 
   @Test
-  public void testOnLeaderElectionCompletion() throws Exception {
+  public void testOnLeaderElectionCompletion() {
     leaderElectionMetrics.onNewLeaderElectionCompletion();
-    Long leaderElectionLatency = (Long) ratisMetricRegistry.getGauges((s, metric) ->
-        s.contains(LAST_LEADER_ELECTION_ELAPSED_TIME)).values().iterator().next().getValue();
-    assertTrue(leaderElectionLatency >= 0L);
+    final SortedMap<String, Gauge> gauges = ratisMetricRegistry.getGauges(
+            (s, metric) -> s.contains(LAST_LEADER_ELECTION_ELAPSED_TIME));
+    LOG.info("{} gauges: {}", LAST_LEADER_ELECTION_ELAPSED_TIME, gauges);
+    final Long leaderElectionLatency = (Long)gauges.values().iterator().next().getValue();
+    assertTrue("leaderElectionLatency = " + leaderElectionLatency, leaderElectionLatency > 0L);
   }
 
   @Test
-  public void testOnLeaderElectionTimeout() throws Exception {
+  public void testOnLeaderElectionTimeout() {
     long numLeaderElectionTimeouts = ratisMetricRegistry.counter(
         LEADER_ELECTION_TIMEOUT_COUNT_METRIC).getCount();
     assertTrue(numLeaderElectionTimeouts == 0);

ratis-shell/pom.xml

@@ -17,7 +17,7 @@
   <parent>
     <artifactId>ratis</artifactId>
     <groupId>org.apache.ratis</groupId>
-    <version>2.5.2-a4398bf-SNAPSHOT</version>
+    <version>2.5.2-c97b814-SNAPSHOT</version>
   </parent>
 
   <artifactId>ratis-shell</artifactId>