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Commit 5eda140a authored by Pramod S's avatar Pramod S
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Initial version of rdma enabled metadata server

parent 33075e8b
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code/hpdos_rdma_offloaded/.classpath 0 → 100644
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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" output="bin/main" path="src/main/java">
<attributes>
<attribute name="gradle_scope" value="main"/>
<attribute name="gradle_used_by_scope" value="main,test"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="bin/main" path="src/main/resources">
<attributes>
<attribute name="gradle_scope" value="main"/>
<attribute name="gradle_used_by_scope" value="main,test"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="bin/test" path="src/test/java">
<attributes>
<attribute name="gradle_scope" value="test"/>
<attribute name="gradle_used_by_scope" value="test"/>
<attribute name="test" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="bin/test" path="src/test/resources">
<attributes>
<attribute name="gradle_scope" value="test"/>
<attribute name="gradle_used_by_scope" value="test"/>
<attribute name="test" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11/"/>
<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
<classpathentry kind="output" path="bin/default"/>
</classpath>
code/hpdos_rdma_offloaded/.gitattributes 0 → 100644
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#
# https://help.github.com/articles/dealing-with-line-endings/
#
# These are explicitly windows files and should use crlf
*.bat text eol=crlf
code/hpdos_rdma_offloaded/.gitignore 0 → 100644
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# Ignore Gradle project-specific cache directory
.gradle
# Ignore Gradle build output directory
build
code/hpdos_rdma_offloaded/.project 0 → 100644
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>hpdos_rdma_offloaded</name>
<comment>Project hpdos_rdma_offloaded created by Buildship.</comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
</natures>
<filteredResources>
<filter>
<id>1632312009345</id>
<name></name>
<type>30</type>
<matcher>
<id>org.eclipse.core.resources.regexFilterMatcher</id>
<arguments>node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
</matcher>
</filter>
</filteredResources>
</projectDescription>
code/hpdos_rdma_offloaded/.settings/org.eclipse.buildship.core.prefs 0 → 100644
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arguments=
auto.sync=false
build.scans.enabled=false
connection.gradle.distribution=GRADLE_DISTRIBUTION(WRAPPER)
connection.project.dir=
eclipse.preferences.version=1
gradle.user.home=
java.home=/usr/lib/jvm/java-11-openjdk-amd64
jvm.arguments=
offline.mode=false
override.workspace.settings=true
show.console.view=true
show.executions.view=true
code/hpdos_rdma_offloaded/app.config 0 → 100644
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app.HOST=192.168.200.20
app.MASTER=true
app.cpu_affinity=4
app.rdma_receive_queue=16
app.rdma_send_queue=16
app.rdma_polling=false
app.rdma_max_inline=0
app.rdma_server_port=1920
app.NETWORK_HANDLER_THREADS=10
app.REPLICATION_HANDLER_THREADS=10
#The below properties are for master node only.
app.follower_registration_port=9876
app.sal_registration_port=9875
#Below properties are for followers only.
\ No newline at end of file
code/hpdos_rdma_offloaded/app_follower.config 0 → 100644
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app.HOST=192.168.200.20
app.MASTER=false
app.cpu_affinity=4
app.rdma_receive_queue=16
app.rdma_send_queue=16
app.rdma_polling=false
app.rdma_max_inline=0
app.rdma_server_port=1921
app.NETWORK_HANDLER_THREADS=10
app.REPLICATION_HANDLER_THREADS=10
#The below properties are for master node only.
app.follower_registration_port=9876
app.sal_registration_port=9875
#Below properties are for followers only.
\ No newline at end of file
code/hpdos_rdma_offloaded/build.gradle 0 → 100644
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/*
* This file was generated by the Gradle 'init' task.
*
* This generated file contains a sample Java Library project to get you started.
* For more details take a look at the Java Libraries chapter in the Gradle
* User Manual available at https://docs.gradle.org/6.0/userguide/java_library_plugin.html
*/
// plugins {
// // Apply the java-library plugin to add support for Java Library
// id 'java-library'
// id 'application'
// }
// repositories {
// // Use jcenter for resolving dependencies.
// // You can declare any Maven/Ivy/file repository here.
// jcenter()
// mavenCentral()
// }
// application {
// // Define the main class for the application.
// mainClass = 'MetadataClient'
// }
// dependencies {
// // This dependency is exported to consumers, that is to say found on their compile classpath.
// api 'org.apache.commons:commons-math3:3.6.1'
// // This dependency is used internally, and not exposed to consumers on their own compile classpath.
// implementation 'com.google.guava:guava:28.0-jre'
// implementation 'com.ibm.darpc:darpc:1.9'
// // Use JUnit test framework
// testImplementation 'junit:junit:4.12'
// }
apply plugin: "application"
apply plugin: "java-library"
mainClassName = "hpdos_rdma_offloaded.MetadataServer"
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
jcenter()
}
dependencies {
testCompile group: 'junit', name: 'junit', version: '4.12'
api 'org.apache.commons:commons-math3:3.6.1'
// This dependency is used internally, and not exposed to consumers on their own compile classpath.
implementation 'com.google.guava:guava:28.0-jre'
implementation 'com.ibm.darpc:darpc:1.9'
implementation 'com.github.ben-manes.caffeine:caffeine:3.0.4'
// Use JUnit test framework
// testImplementation 'junit:junit:4.12'
}
\ No newline at end of file
code/hpdos_rdma_offloaded/gradle/wrapper/gradle-wrapper.properties 0 → 100644
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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-6.0-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
code/hpdos_rdma_offloaded/gradlew 0 → 100755
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#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed 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
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# 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.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"
code/hpdos_rdma_offloaded/gradlew.bat 0 → 100644
View file @ 5eda140a
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega
code/hpdos_rdma_offloaded/settings.gradle 0 → 100644
View file @ 5eda140a
/*
* This file was generated by the Gradle 'init' task.
*
* The settings file is used to specify which projects to include in your build.
*
* Detailed information about configuring a multi-project build in Gradle can be found
* in the user manual at https://docs.gradle.org/6.0/userguide/multi_project_builds.html
*/
rootProject.name = 'hpdos_rdma_offloaded'
code/hpdos_rdma_offloaded/src/main/java/hpdos_rdma_offloaded/MetadataServer.java 0 → 100644
View file @ 5eda140a
package hpdos_rdma_offloaded;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.util.Properties;
import com.ibm.darpc.DaRPCServerEndpoint;
import com.ibm.darpc.DaRPCServerGroup;
import com.ibm.disni.RdmaServerEndpoint;
import hpdos_rdma_offloaded.handler.NetworkHandler;
import hpdos_rdma_offloaded.handler.RegistrationHandler;
import hpdos_rdma_offloaded.handler.ReplicationHandler;
import hpdos_rdma_offloaded.handler.StorageHandler;
import hpdos_rdma_offloaded.rdma_protocol.Request;
import hpdos_rdma_offloaded.rdma_protocol.Response;
import hpdos_rdma_offloaded.service.MetadataServerService;
public class MetadataServer implements Runnable{
private String host;
private int poolsize;
private int recvQueue;
private int sendQueue;
private int wqSize = recvQueue;
private boolean polling;
private int maxinline = 0;
private int rdma_port;
boolean isMaster;
StorageHandler storageHandler;
NetworkHandler networkHandler;
MetadataServerService metadataServerService;
RegistrationHandler registrationHandler = null;
public final static Properties properties= new Properties();;
public MetadataServer(Properties properties) throws IOException {
this.isMaster = Boolean.valueOf((String)properties.get("app.MASTER"));
this.storageHandler = new StorageHandler(properties);
this.networkHandler = new NetworkHandler(this.storageHandler, properties);
this.metadataServerService = new MetadataServerService(this.networkHandler);
// if (this.isMaster) {
this.registrationHandler = new RegistrationHandler(properties);
// }
}
public void run()
{
host = (String) properties.get("app.HOST");
poolsize = Integer.valueOf( (String)properties.get("app.cpu_affinity"));
recvQueue = Integer.valueOf( (String)properties.get("app.rdma_receive_queue"));
sendQueue = Integer.valueOf( (String) properties.get("app.rdma_send_queue"));
wqSize = recvQueue;
maxinline = Integer.valueOf((String) properties.get("app.rdma_max_inline"));
rdma_port = Integer.valueOf((String) properties.get("app.rdma_server_port"));
polling = Boolean.valueOf((String) properties.get("app.rdma_polling"));
long[] clusterAffinities = new long[poolsize];
for (int i = 0; i < poolsize; i++){
long cpu = 1L << i;
clusterAffinities[i] = cpu;
}
// MetadataServerService rpcService = new MetadataServerService();
DaRPCServerGroup<Request, Response> group = null;
try {
group = DaRPCServerGroup.createServerGroup(this.metadataServerService, clusterAffinities, -1, maxinline, polling, recvQueue, sendQueue, wqSize, 32);
} catch (Exception e) {
e.printStackTrace();
};
RdmaServerEndpoint<DaRPCServerEndpoint<Request, Response>> serverEp = null;
try {
serverEp = group.createServerEndpoint();
} catch (IOException e) {
e.printStackTrace();
}
InetSocketAddress address = new InetSocketAddress(host, rdma_port);
try {
serverEp.bind(address, 100);
} catch (Exception e) {
e.printStackTrace();
}
while(true){
try {
// System.out.println("Listening to RDMA requests a, IP: " + host + " , PORT: " + rdma_port);
serverEp.accept();
// System.out.println("Accepted connection.");
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws IOException, InterruptedException {
InputStream inputStream = new FileInputStream(args[0]);
properties.load(inputStream);
boolean isMaster = Boolean.valueOf((String)properties.get("app.MASTER"));
if (isMaster) {
System.out.println("STARTING MASTER SERVICES.");
} else {
System.out.println("STARTING FOLLOWER SERVICES.");
}
Runnable t1 = new MetadataServer(properties);
Thread t = new Thread(t1);
t.start();
}
}
code/hpdos_rdma_offloaded/src/main/java/hpdos_rdma_offloaded/handler/NetworkHandler.java 0 → 100644
View file @ 5eda140a
package hpdos_rdma_offloaded.handler;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import com.ibm.darpc.DaRPCClientEndpoint;
import com.ibm.darpc.DaRPCClientGroup;
import com.ibm.darpc.DaRPCStream;
import hpdos_rdma_offloaded.lib.Follower;
import hpdos_rdma_offloaded.lib.Packet;
import hpdos_rdma_offloaded.rdma_protocol.Request;
import hpdos_rdma_offloaded.rdma_protocol.Response;
import hpdos_rdma_offloaded.rdma_protocol.RpcProtocol;
public class NetworkHandler {
StorageHandler storageHandler;
private ExecutorService executorService;
public HashMap<String, DaRPCStream<Request, Response>> streams;
// public static List<Follower> followers = new ArrayList<>();
boolean isMaster;
public NetworkHandler(){}
public NetworkHandler(StorageHandler storageHandler, Properties properties){
this.storageHandler = storageHandler;
this.executorService = Executors.newFixedThreadPool(10);
this.isMaster = Boolean.valueOf((String)properties.get("app.MASTER"));
}
public void connectToSals() throws Exception{
// RpcProtocol rpcProtocol = new RpcProtocol();
// DaRPCClientGroup<Request, Response> group = DaRPCClientGroup.createClientGroup(rpcProtocol, 100, 0, 16, 16);
// InetSocketAddress address = new InetSocketAddress("192.168.200.50", 1919);
// DaRPCClientEndpoint<Request, Response> clientEp = group.createEndpoint();
// clientEp.connect(address, 1000);
// DaRPCStream<Request, Response> stream = clientEp.createStream();
// if(!stream.isEmpty()){
// this.streams.put("192.168.200.50", stream);
// }
}
public void connectToFollower(String uid , String ip) throws Exception {
Thread.sleep(3000);
System.out.println("Making rdma connection to follower.");
Follower follower = new Follower();
follower.setFollowerId(uid);
follower.setIpAddress(ip);
RpcProtocol rpcProtocol = new RpcProtocol();
DaRPCClientGroup<Request, Response> group = DaRPCClientGroup.createClientGroup(rpcProtocol, 100, 0, 16, 16);
InetSocketAddress address = new InetSocketAddress(ip, 1921);
DaRPCClientEndpoint<Request, Response> clientEp = group.createEndpoint();
clientEp.connect(address, 1000);
DaRPCStream<Request, Response> stream = clientEp.createStream();
follower.setStream(stream);
ReplicationHandler.followers.add(follower);
}
// Change the Futre to CompletableFuture to achieve correct asynchronousness
public void create(Packet packet) throws InterruptedException, ExecutionException{
System.out.println("Received create request for key/value: " + packet.getKey() + "/" + packet.getValue());
Response response = new Response();
Future<String> futureRocksDB = this.executorService.submit(()->{
// Write code to write to rocksdb memtable here.
// Change return type as required.
return "";
});
if (this.isMaster) {
System.out.println("Starting replication");
Future<Response> futureReplication = this.executorService.submit(()->{
Response replicationResponse = new Response();
// Write code to replicate the data to other nics
ReplicationHandler.replicateMetadata(packet);
return replicationResponse;
});
response = futureReplication.get();