Ignite2.16 Cannot find class [io.prometheus.client.exporter.HTTPServer]

[Charlin S]

Hi
I am working on exporting traces to prometheus and getting below error
while starting server node.
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find
class [io.prometheus.client.exporter.HTTPServer] for bean with name
'httpServer' defined in URL
[file:/apache-ignite-2.16.0-bin/config/test_config.xml]; nested exception
is java.lang.ClassNotFoundException:
io.prometheus.client.exporter.HTTPServer

XML bean as following
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans";
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
       xmlns:util="http://www.springframework.org/schema/util";
       xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/util

http://www.springframework.org/schema/util/spring-util.xsd";>
    <bean id="httpServer" class="io.prometheus.client.exporter.HTTPServer">
        <constructor-arg type="java.lang.String" value="127.0.0.10"/>
        <constructor-arg type="int" value="1234"/>
        <constructor-arg type="boolean" value="true"/>
    </bean>

    <bean id="opencensusWrapper"
class="org.springframework.beans.factory.config.MethodInvokingBean">
        <property name="staticMethod"

value="io.opencensus.exporter.stats.prometheus.PrometheusStatsCollector.createAndRegister"/>
    </bean>
  <bean class="org.apache.ignite.configuration.IgniteConfiguration">
     <property name="clientConnectorConfiguration">
         <bean
class="org.apache.ignite.configuration.ClientConnectorConfiguration">
             <property name="port" value="10900"/>
         </bean>
     </property>
     <property name="clientMode" value="false"/>
     <property name="clientFailureDetectionTimeout" value="120000"/>
     <property name="igniteInstanceName" value="StaticCacheGrid"/>
     <property name="longQueryWarningTimeout" value="4000"/>
     <property name="failureDetectionTimeout" value="120000"/>
     <property name="localHost" value="127.0.0.10"/>
     <property name="segmentationPolicy" value="RESTART_JVM"/>
     <property name="segmentCheckFrequency" value="20000"/>
     <property name="segmentationResolveAttempts" value="10"/>
     <property name="discoverySpi">
      <bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
<property name="localPort" value="57800"/>
        <property name="ipFinder">
          <bean
class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
            <property name="addresses">
              <list>
<value>127.0.0.10:57800</value>
              </list>
            </property>
          </bean>
        </property>
      </bean>
    </property>
    <property name="metricsUpdateFrequency" value="1000"/>
    <property name="metricExporterSpi">
            <list>
                <bean
class="org.apache.ignite.spi.metric.opencensus.OpenCensusMetricExporterSpi">
                    <property name="period" value="1000"/>
                </bean>
            </list>
    </property>
    <property name="dataStorageConfiguration">
            <bean
class="org.apache.ignite.configuration.DataStorageConfiguration">
                <property name="defaultDataRegionConfiguration">
                    <bean
class="org.apache.ignite.configuration.DataRegionConfiguration">
<property name="name" value="Common_Data_Region"/>
                        <property name="initialSize" value="#{1L * 1024 *
1024 * 1024}"/>
                        <property name="maxSize" value="#{8L * 1024 * 1024
* 1024}"/>
                    </bean>
                </property>
            </bean>
</property>
<property name="communicationSpi">
        <bean
class="org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi">
   <property name="sharedMemoryPort" value="-1"/>
            <property name="localPort" value="57905"/>
        </bean>
    </property>
  </bean>
</beans>

Thanks & Regards,
Charlin