Repository: incubator-gossip
Updated Branches:
  refs/heads/master bc96cf6d3 -> 9487b8c22


GOSSIP-17 Add metrics (Chandresh Pancholi via egc)


Project: http://git-wip-us.apache.org/repos/asf/incubator-gossip/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-gossip/commit/9487b8c2
Tree: http://git-wip-us.apache.org/repos/asf/incubator-gossip/tree/9487b8c2
Diff: http://git-wip-us.apache.org/repos/asf/incubator-gossip/diff/9487b8c2

Branch: refs/heads/master
Commit: 9487b8c2238e86da3f4a2373979533ee72afa684
Parents: bc96cf6
Author: Edward Capriolo <[email protected]>
Authored: Sat Jan 14 22:18:33 2017 -0500
Committer: Edward Capriolo <[email protected]>
Committed: Sat Jan 14 22:18:33 2017 -0500

----------------------------------------------------------------------
 pom.xml                                         |  5 +++
 .../java/org/apache/gossip/GossipRunner.java    |  2 --
 .../java/org/apache/gossip/GossipService.java   | 13 +++++---
 .../apache/gossip/examples/GossipExample.java   |  3 +-
 .../apache/gossip/examples/StandAloneNode.java  |  3 +-
 .../gossip/manager/ActiveGossipThread.java      | 35 ++++++++++++++++----
 .../apache/gossip/manager/GossipManager.java    |  8 +++--
 .../manager/random/RandomGossipManager.java     | 16 +++++++--
 src/test/java/org/apache/gossip/DataTest.java   |  9 ++---
 .../org/apache/gossip/ShutdownDeadtimeTest.java |  5 +--
 .../org/apache/gossip/StartupSettingsTest.java  |  4 +--
 .../org/apache/gossip/TenNodeThreeSeedTest.java |  3 +-
 .../apache/gossip/manager/DataReaperTest.java   |  8 +++--
 .../manager/RandomGossipManagerBuilderTest.java |  5 +--
 14 files changed, 82 insertions(+), 37 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/pom.xml
----------------------------------------------------------------------
diff --git a/pom.xml b/pom.xml
index 71db8ed..a104451 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,6 +39,7 @@
                
                <!-- dependecy versions -->
                <jackson.version>2.8.5</jackson.version>
+               <metrics.version>3.1.2</metrics.version>
                <commons-math.version>1.2</commons-math.version>
                <junit.jupiter.version>5.0.0-M2</junit.jupiter.version>
                <junit.platform.version>1.0.0-M2</junit.platform.version>
@@ -91,6 +92,10 @@
                        <version>${jackson.version}</version>
                </dependency>
                <dependency>
+                       <groupId>io.dropwizard.metrics</groupId>
+                       <artifactId>metrics-core</artifactId>
+                       <version>${metrics.version}</version></dependency>
+               <dependency>
                        <groupId>org.junit.jupiter</groupId>
                        <artifactId>junit-jupiter-api</artifactId>
                        <version>${junit.jupiter.version}</version>

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/GossipRunner.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/gossip/GossipRunner.java 
b/src/main/java/org/apache/gossip/GossipRunner.java
index 1ae609c..c8a1f13 100644
--- a/src/main/java/org/apache/gossip/GossipRunner.java
+++ b/src/main/java/org/apache/gossip/GossipRunner.java
@@ -22,8 +22,6 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.net.URISyntaxException;
 
-
-
 public class GossipRunner {
 
   public static void main(String[] args) throws URISyntaxException {

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/GossipService.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/gossip/GossipService.java 
b/src/main/java/org/apache/gossip/GossipService.java
index 80c01ca..fca9f28 100644
--- a/src/main/java/org/apache/gossip/GossipService.java
+++ b/src/main/java/org/apache/gossip/GossipService.java
@@ -17,10 +17,12 @@
  */
 package org.apache.gossip;
 
+import com.codahale.metrics.MetricRegistry;
 import java.net.URI;
 import java.net.UnknownHostException;
 import java.util.List;
 
+import com.codahale.metrics.JmxReporter;
 import org.apache.gossip.event.GossipListener;
 import org.apache.gossip.manager.GossipManager;
 import org.apache.gossip.manager.random.RandomGossipManager;
@@ -35,7 +37,8 @@ import org.apache.log4j.Logger;
 public class GossipService {
 
   public static final Logger LOGGER = Logger.getLogger(GossipService.class);
-
+  private final JmxReporter jmxReporter;
+  
   private final GossipManager gossipManager;
 
   /**
@@ -48,7 +51,7 @@ public class GossipService {
           UnknownHostException {
     this(startupSettings.getCluster(), startupSettings.getUri()
             , startupSettings.getId(), startupSettings.getGossipMembers(),
-            startupSettings.getGossipSettings(), null);
+            startupSettings.getGossipSettings(), null, new MetricRegistry());
   }
 
   /**
@@ -58,8 +61,10 @@ public class GossipService {
    * @throws UnknownHostException
    */
   public GossipService(String cluster, URI uri, String id,
-          List<GossipMember> gossipMembers, GossipSettings settings, 
GossipListener listener)
+          List<GossipMember> gossipMembers, GossipSettings settings, 
GossipListener listener, MetricRegistry registry)
           throws InterruptedException, UnknownHostException {
+    jmxReporter = JmxReporter.forRegistry(registry).build();
+    jmxReporter.start();
     gossipManager = RandomGossipManager.newBuilder()
         .withId(id)
         .cluster(cluster)
@@ -67,11 +72,11 @@ public class GossipService {
         .settings(settings)
         .gossipMembers(gossipMembers)
         .listener(listener)
+        .registry(registry)
         .build();
   }
 
   public void start() {
-    LOGGER.debug("Starting: " + getGossipManager().getMyself().getUri());
     gossipManager.init();
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/examples/GossipExample.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/gossip/examples/GossipExample.java 
b/src/main/java/org/apache/gossip/examples/GossipExample.java
index cea59f4..01cd3e3 100644
--- a/src/main/java/org/apache/gossip/examples/GossipExample.java
+++ b/src/main/java/org/apache/gossip/examples/GossipExample.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip.examples;
 
+import com.codahale.metrics.MetricRegistry;
 import java.net.InetAddress;
 import java.net.URI;
 import java.net.URISyntaxException;
@@ -81,7 +82,7 @@ public class GossipExample extends Thread {
       // dead list handling.
       for (GossipMember member : startupMembers) {
         GossipService gossipService = new GossipService(cluster,  
member.getUri(), "",
-                startupMembers, settings, null);
+                startupMembers, settings, null, new MetricRegistry());
         clients.add(gossipService);
         gossipService.start();
         sleep(settings.getCleanupInterval() + 1000);

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/examples/StandAloneNode.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/gossip/examples/StandAloneNode.java 
b/src/main/java/org/apache/gossip/examples/StandAloneNode.java
index b6784cc..c12f946 100644
--- a/src/main/java/org/apache/gossip/examples/StandAloneNode.java
+++ b/src/main/java/org/apache/gossip/examples/StandAloneNode.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip.examples;
 
+import com.codahale.metrics.MetricRegistry;
 import java.net.URI;
 import java.net.UnknownHostException;
 import java.util.Arrays;
@@ -32,7 +33,7 @@ public class StandAloneNode {
     s.setConvictThreshold(1.0);
     s.setGossipInterval(10);
     GossipService gossipService = new GossipService("mycluster",  
URI.create(args[0]), args[1],
-            Arrays.asList( new RemoteGossipMember("mycluster", 
URI.create(args[2]), args[3])), s, (a,b) -> {} );
+            Arrays.asList( new RemoteGossipMember("mycluster", 
URI.create(args[2]), args[3])), s, (a,b) -> {}, new MetricRegistry());
     gossipService.start();
     while (true){
       System.out.println( "Live: " + 
gossipService.getGossipManager().getLiveMembers());

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/manager/ActiveGossipThread.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/gossip/manager/ActiveGossipThread.java 
b/src/main/java/org/apache/gossip/manager/ActiveGossipThread.java
index e6248dc..c09cfe9 100644
--- a/src/main/java/org/apache/gossip/manager/ActiveGossipThread.java
+++ b/src/main/java/org/apache/gossip/manager/ActiveGossipThread.java
@@ -32,6 +32,8 @@ import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
+import com.codahale.metrics.Histogram;
+import com.codahale.metrics.MetricRegistry;
 import org.apache.gossip.LocalGossipMember;
 import org.apache.gossip.model.ActiveGossipOk;
 import org.apache.gossip.model.GossipDataMessage;
@@ -45,11 +47,10 @@ import org.apache.log4j.Logger;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 
+import static com.codahale.metrics.MetricRegistry.name;
 
 /**
- * [The active thread: periodically send gossip request.] The class handles 
gossiping the membership
- * list. This information is important to maintaining a common state among all 
the nodes, and is
- * important for detecting failures.
+ * The ActiveGossipThread is sends information. Pick a random partner and send 
the membership list to that partner
  */
 public class ActiveGossipThread {
 
@@ -63,15 +64,23 @@ public class ActiveGossipThread {
   private ThreadPoolExecutor threadService;
   private ObjectMapper MAPPER = new ObjectMapper();
 
-  public ActiveGossipThread(GossipManager gossipManager, GossipCore 
gossipCore) {
+  private final Histogram sharedDataHistogram;
+  private final Histogram sendPerNodeDataHistogram;
+  private final Histogram sendMembershipHistorgram;
+
+  public ActiveGossipThread(GossipManager gossipManager, GossipCore 
gossipCore, MetricRegistry registry) {
     this.gossipManager = gossipManager;
     random = new Random();
     this.gossipCore = gossipCore;
-    this.scheduledExecutorService = Executors.newScheduledThreadPool(2);
+    scheduledExecutorService = Executors.newScheduledThreadPool(2);
     workQueue = new ArrayBlockingQueue<Runnable>(1024);
     threadService = new ThreadPoolExecutor(1, 30, 1, TimeUnit.SECONDS, 
workQueue, new ThreadPoolExecutor.DiscardOldestPolicy());
+    sharedDataHistogram = registry.histogram(name(ActiveGossipThread.class, 
"sharedDataHistogram-time"));
+    sendPerNodeDataHistogram = 
registry.histogram(name(ActiveGossipThread.class, 
"sendPerNodeDataHistogram-time"));
+    sendMembershipHistorgram = 
registry.histogram(name(ActiveGossipThread.class, 
"sendMembershipHistorgram-time"));
   }
- 
+
+
   public void init() {
     scheduledExecutorService.scheduleAtFixedRate(
             () -> { 
@@ -99,9 +108,12 @@ public class ActiveGossipThread {
   }
 
   public void sendSharedData(LocalGossipMember me, List<LocalGossipMember> 
memberList){
+    long startTime = System.currentTimeMillis();
+
     LocalGossipMember member = selectPartner(memberList);
     if (member == null) {
       LOGGER.debug("Send sendMembershipList() is called without action");
+      sharedDataHistogram.update(System.currentTimeMillis() - startTime);
       return;
     }
     try (DatagramSocket socket = new DatagramSocket()) {
@@ -128,12 +140,16 @@ public class ActiveGossipThread {
     } catch (IOException e1) {
       LOGGER.warn(e1);
     }
+    sharedDataHistogram.update(System.currentTimeMillis() - startTime);
   }
   
   public void sendPerNodeData(LocalGossipMember me, List<LocalGossipMember> 
memberList){
+    long startTime = System.currentTimeMillis();
+
     LocalGossipMember member = selectPartner(memberList);
     if (member == null) {
       LOGGER.debug("Send sendMembershipList() is called without action");
+      sendPerNodeDataHistogram.update(System.currentTimeMillis() - startTime);
       return;
     }
     try (DatagramSocket socket = new DatagramSocket()) {
@@ -162,6 +178,7 @@ public class ActiveGossipThread {
     } catch (IOException e1) {
       LOGGER.warn(e1);
     }
+    sendPerNodeDataHistogram.update(System.currentTimeMillis() - startTime);
   }
   
   protected void sendToALiveMember(){
@@ -176,10 +193,13 @@ public class ActiveGossipThread {
   /**
    * Performs the sending of the membership list, after we have incremented 
our own heartbeat.
    */
-  protected void sendMembershipList(LocalGossipMember me, LocalGossipMember 
member) {  
+  protected void sendMembershipList(LocalGossipMember me, LocalGossipMember 
member) {
+    long startTime = System.currentTimeMillis();
+
     me.setHeartbeat(System.nanoTime());
     if (member == null) {
       LOGGER.debug("Send sendMembershipList() is called without action");
+      sendMembershipHistorgram.update(System.currentTimeMillis() - startTime);
       return;
     } else {
       LOGGER.debug("Send sendMembershipList() is called to " + 
member.toString());
@@ -209,6 +229,7 @@ public class ActiveGossipThread {
     } catch (IOException e1) {
       LOGGER.warn(e1);
     }
+    sendMembershipHistorgram.update(System.currentTimeMillis() - startTime);
   }
   
   /**

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/manager/GossipManager.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/gossip/manager/GossipManager.java 
b/src/main/java/org/apache/gossip/manager/GossipManager.java
index 2b081d0..a5d57f5 100644
--- a/src/main/java/org/apache/gossip/manager/GossipManager.java
+++ b/src/main/java/org/apache/gossip/manager/GossipManager.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip.manager;
 
+import com.codahale.metrics.MetricRegistry;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -74,9 +75,11 @@ public abstract class GossipManager {
   
   private final ScheduledExecutorService scheduledServiced;
 
+  private MetricRegistry registry;
+
   public GossipManager(String cluster,
           URI uri, String id, GossipSettings settings,
-          List<GossipMember> gossipMembers, GossipListener listener) {
+          List<GossipMember> gossipMembers, GossipListener listener, 
MetricRegistry registry) {
     
     this.settings = settings;
     gossipCore = new GossipCore(this);
@@ -98,6 +101,7 @@ public abstract class GossipManager {
     gossipServiceRunning = new AtomicBoolean(true);
     this.listener = listener;
     this.scheduledServiced = Executors.newScheduledThreadPool(1);
+    this.registry = registry;
   }
 
   public ConcurrentSkipListMap<LocalGossipMember, GossipState> getMembers() {
@@ -148,7 +152,7 @@ public abstract class GossipManager {
   public void init() {
     passiveGossipThread = new OnlyProcessReceivedPassiveGossipThread(this, 
gossipCore);
     gossipThreadExecutor.execute(passiveGossipThread);
-    activeGossipThread = new ActiveGossipThread(this, this.gossipCore);
+    activeGossipThread = new ActiveGossipThread(this, this.gossipCore, 
registry);
     activeGossipThread.init();
     dataReaper.init();
     scheduledServiced.scheduleAtFixedRate(() -> {

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/main/java/org/apache/gossip/manager/random/RandomGossipManager.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/gossip/manager/random/RandomGossipManager.java 
b/src/main/java/org/apache/gossip/manager/random/RandomGossipManager.java
index 1444181..fd936f1 100644
--- a/src/main/java/org/apache/gossip/manager/random/RandomGossipManager.java
+++ b/src/main/java/org/apache/gossip/manager/random/RandomGossipManager.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip.manager.random;
 
+import com.codahale.metrics.MetricRegistry;
 import org.apache.gossip.GossipMember;
 import org.apache.gossip.GossipSettings;
 import org.apache.gossip.event.GossipListener;
@@ -40,6 +41,7 @@ public class RandomGossipManager extends GossipManager {
     private GossipSettings settings;
     private List<GossipMember> gossipMembers;
     private GossipListener listener;
+    private MetricRegistry registry;
 
     private ManagerBuilder() {}
 
@@ -73,6 +75,10 @@ public class RandomGossipManager extends GossipManager {
       this.listener = listener;
       return this;
     }
+    public ManagerBuilder registry(MetricRegistry registry) {
+      this.registry = registry;
+      return this;
+    }
 
     public ManagerBuilder uri(URI uri){
       this.uri = uri;
@@ -84,15 +90,19 @@ public class RandomGossipManager extends GossipManager {
       checkArgument(cluster != null, "You must specify a cluster name");
       checkArgument(settings != null, "You must specify gossip settings");
       checkArgument(uri != null, "You must specify a uri");
+      checkArgument(registry != null, "You must specify a MetricRegistry");
+      if (listener == null){
+        listener((a,b) -> {});
+      }
       if (gossipMembers == null) {
         gossipMembers = new ArrayList<>();
       }
-      return new RandomGossipManager(cluster, uri, id, settings, 
gossipMembers, listener);
+      return new RandomGossipManager(cluster, uri, id, settings, 
gossipMembers, listener, registry);
     }
   }
 
   private RandomGossipManager(String cluster, URI uri, String id, 
GossipSettings settings, 
-          List<GossipMember> gossipMembers, GossipListener listener) {
-    super(cluster, uri, id, settings, gossipMembers, listener);
+          List<GossipMember> gossipMembers, GossipListener listener, 
MetricRegistry registry) {
+    super(cluster, uri, id, settings, gossipMembers, listener, registry);
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/test/java/org/apache/gossip/DataTest.java
----------------------------------------------------------------------
diff --git a/src/test/java/org/apache/gossip/DataTest.java 
b/src/test/java/org/apache/gossip/DataTest.java
index d3babf6..766d72b 100644
--- a/src/test/java/org/apache/gossip/DataTest.java
+++ b/src/test/java/org/apache/gossip/DataTest.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip;
 
+import com.codahale.metrics.MetricRegistry;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.UnknownHostException;
@@ -26,8 +27,6 @@ import java.util.UUID;
 import java.util.concurrent.Callable;
 import java.util.concurrent.TimeUnit;
 
-import org.apache.gossip.event.GossipListener;
-import org.apache.gossip.event.GossipState;
 import org.apache.gossip.model.GossipDataMessage;
 import org.apache.gossip.model.SharedGossipDataMessage;
 import org.junit.Test;
@@ -52,11 +51,7 @@ public class DataTest {
       URI uri = new URI("udp://" + "127.0.0.1" + ":" + (50000 + i));
       GossipService gossipService = new GossipService(cluster, uri, i + "",
               startupMembers, settings,
-              new GossipListener(){
-        public void gossipEvent(GossipMember member, GossipState state) {
-          
-        }
-      });
+              (a,b) -> {}, new MetricRegistry());
       clients.add(gossipService);
       gossipService.start();
     }

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/test/java/org/apache/gossip/ShutdownDeadtimeTest.java
----------------------------------------------------------------------
diff --git a/src/test/java/org/apache/gossip/ShutdownDeadtimeTest.java 
b/src/test/java/org/apache/gossip/ShutdownDeadtimeTest.java
index 1cdb9ac..7b66fbc 100644
--- a/src/test/java/org/apache/gossip/ShutdownDeadtimeTest.java
+++ b/src/test/java/org/apache/gossip/ShutdownDeadtimeTest.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip;
 
+import com.codahale.metrics.MetricRegistry;
 import io.teknek.tunit.TUnit;
 
 import java.net.URI;
@@ -58,7 +59,7 @@ public class ShutdownDeadtimeTest {
     for (int i = 1; i < clusterMembers + 1; ++i) {
       URI uri = new URI("udp://" + "127.0.0.1" + ":" + (30300 + i));
       GossipService gossipService = new GossipService(cluster, uri, i + "", 
startupMembers,
-              settings, (a,b) -> {});
+              settings, (a,b) -> {}, new MetricRegistry());
       clients.add(gossipService);
       gossipService.start();
     }
@@ -104,7 +105,7 @@ public class ShutdownDeadtimeTest {
     URI uri = new URI("udp://" + "127.0.0.1" + ":" + shutdownPort);
     // start client again
     GossipService gossipService = new GossipService(cluster, uri, shutdownId + 
"", startupMembers,
-            settings, (a,b) -> {});
+            settings, (a,b) -> {}, new MetricRegistry());
     clients.add(gossipService);
     gossipService.start();
 

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/test/java/org/apache/gossip/StartupSettingsTest.java
----------------------------------------------------------------------
diff --git a/src/test/java/org/apache/gossip/StartupSettingsTest.java 
b/src/test/java/org/apache/gossip/StartupSettingsTest.java
index a798594..61bd4f4 100644
--- a/src/test/java/org/apache/gossip/StartupSettingsTest.java
+++ b/src/test/java/org/apache/gossip/StartupSettingsTest.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip;
 
+import com.codahale.metrics.MetricRegistry;
 import org.apache.log4j.Logger;
 
 import org.junit.jupiter.api.Test;
@@ -40,7 +41,6 @@ public class StartupSettingsTest {
   private static final Logger log = Logger.getLogger( 
StartupSettingsTest.class );
   private static final String CLUSTER = UUID.randomUUID().toString();
 
-  
   @Test
   public void testUsingSettingsFile() throws IOException, 
InterruptedException, URISyntaxException {
     File settingsFile = File.createTempFile("gossipTest",".json");
@@ -49,7 +49,7 @@ public class StartupSettingsTest {
     URI uri = new URI("udp://" + "127.0.0.1" + ":" + 50000);
     final GossipService firstService = new GossipService(
             CLUSTER, uri, "1",
-      new ArrayList<GossipMember>(), new GossipSettings(), null);
+      new ArrayList<GossipMember>(), new GossipSettings(), null, new 
MetricRegistry());
     firstService.start();
     final GossipService serviceUnderTest = new GossipService(
             StartupSettings.fromJSONFile(settingsFile));

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/test/java/org/apache/gossip/TenNodeThreeSeedTest.java
----------------------------------------------------------------------
diff --git a/src/test/java/org/apache/gossip/TenNodeThreeSeedTest.java 
b/src/test/java/org/apache/gossip/TenNodeThreeSeedTest.java
index aa9e2e8..af7a117 100644
--- a/src/test/java/org/apache/gossip/TenNodeThreeSeedTest.java
+++ b/src/test/java/org/apache/gossip/TenNodeThreeSeedTest.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip; 
 
+import com.codahale.metrics.MetricRegistry;
 import io.teknek.tunit.TUnit;
 
 import java.net.URI;
@@ -58,7 +59,7 @@ public class TenNodeThreeSeedTest {
     for (int i = 1; i < clusterMembers+1; ++i) {
       URI uri = new URI("udp://" + "127.0.0.1" + ":" + (base + i));
       GossipService gossipService = new GossipService(cluster, uri, i + "",
-              startupMembers, settings, (a,b) -> {});
+              startupMembers, settings, (a,b) -> {}, new MetricRegistry());
       clients.add(gossipService);
       gossipService.start();
     }    

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/test/java/org/apache/gossip/manager/DataReaperTest.java
----------------------------------------------------------------------
diff --git a/src/test/java/org/apache/gossip/manager/DataReaperTest.java 
b/src/test/java/org/apache/gossip/manager/DataReaperTest.java
index 1b5c35e..5388bb3 100644
--- a/src/test/java/org/apache/gossip/manager/DataReaperTest.java
+++ b/src/test/java/org/apache/gossip/manager/DataReaperTest.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip.manager;
 
+import com.codahale.metrics.MetricRegistry;
 import java.net.URI;
 
 import org.apache.gossip.GossipSettings;
@@ -30,6 +31,8 @@ import io.teknek.tunit.TUnit;
 
 public class DataReaperTest {
 
+  private final MetricRegistry registry = new MetricRegistry();
+
   @Test
   public void testReaperOneShot() {
     String myId = "4";
@@ -37,7 +40,7 @@ public class DataReaperTest {
     String value = "a";
     GossipSettings settings = new GossipSettings();
     GossipManager gm = 
RandomGossipManager.newBuilder().cluster("abc").settings(settings)
-            .withId(myId).uri(URI.create("udp://localhost:6000")).build();
+            
.withId(myId).uri(URI.create("udp://localhost:6000")).registry(registry).build();
     gm.init();
     gm.gossipPerNodeData(perNodeDatum(key, value));
     gm.gossipSharedData(sharedDatum(key, value));
@@ -68,7 +71,6 @@ public class DataReaperTest {
     return m;
   }
   
-
   @Test
   public void testHigherTimestampWins() {
     String myId = "4";
@@ -76,7 +78,7 @@ public class DataReaperTest {
     String value = "a";
     GossipSettings settings = new GossipSettings();
     GossipManager gm = 
RandomGossipManager.newBuilder().cluster("abc").settings(settings)
-            .withId(myId).uri(URI.create("udp://localhost:7000")).build();
+            
.withId(myId).uri(URI.create("udp://localhost:7000")).registry(registry).build();
     gm.init();
     GossipDataMessage before = perNodeDatum(key, value);
     GossipDataMessage after = perNodeDatum(key, "b");

http://git-wip-us.apache.org/repos/asf/incubator-gossip/blob/9487b8c2/src/test/java/org/apache/gossip/manager/RandomGossipManagerBuilderTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/gossip/manager/RandomGossipManagerBuilderTest.java 
b/src/test/java/org/apache/gossip/manager/RandomGossipManagerBuilderTest.java
index d9635af..0c5aa88 100644
--- 
a/src/test/java/org/apache/gossip/manager/RandomGossipManagerBuilderTest.java
+++ 
b/src/test/java/org/apache/gossip/manager/RandomGossipManagerBuilderTest.java
@@ -17,6 +17,7 @@
  */
 package org.apache.gossip.manager;
 
+import com.codahale.metrics.MetricRegistry;
 import org.apache.gossip.GossipMember;
 import org.apache.gossip.GossipSettings;
 import org.apache.gossip.LocalGossipMember;
@@ -82,7 +83,7 @@ public class RandomGossipManagerBuilderTest {
         .cluster("aCluster")
         .uri(new URI("udp://localhost:2000"))
         .settings(new GossipSettings())
-        .gossipMembers(null).build();
+        .gossipMembers(null).registry(new MetricRegistry()).build();
     assertNotNull(gossipManager.getLiveMembers());
   }
 
@@ -98,7 +99,7 @@ public class RandomGossipManagerBuilderTest {
         .cluster("aCluster")
         .settings(new GossipSettings())
         .uri(new URI("udp://localhost:8000"))
-        .gossipMembers(memberList).build();
+        .gossipMembers(memberList).registry(new MetricRegistry()).build();
     assertEquals(1, gossipManager.getDeadMembers().size());
     assertEquals(member.getId(), 
gossipManager.getDeadMembers().get(0).getId());
   }

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