I am trying to connect with elasticsearch server(6.8.0) which is x-pack enabled and starting without any error. When I am trying to connect with java code following steps on webpage (https://www.elastic.co/guide/en/elastic-stack-overview/6.7/java-clients.html) I am getting below exception.
Caused by: org.elasticsearch.ElasticsearchException: Fail... Caused by: org.elasticsearch.ElasticsearchException: Failed to load plugin class [org.elasticsearch.xpack.XPackPlugin] at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:384) ~[elasticsearch-5.3.0.jar:5.3.0] at org.elasticsearch.plugins.PluginsService.(PluginsService.java:104) ~[elasticsearch-5.3.0.jar:5.3.0] at org.elasticsearch.client.transport.TransportClient.newPluginService(TransportClient.java:101) ~[elasticsearch-5.3.0.jar:5.3.0] at org.elasticsearch.client.transport.TransportClient.buildTemplate(TransportClient.java:126) ~[elasticsearch-5.3.0.jar:5.3.0] at org.elasticsearch.client.transport.TransportClient.(TransportClient.java:268) ~[elasticsearch-5.3.0.jar:5.3.0] at org.elasticsearch.transport.client.PreBuiltTransportClient.(PreBuiltTransportClient.java:128) ~[transport-6.2.4.jar:6.2.4] at org.elasticsearch.xpack.client.PreBuiltXPackTransportClient.(PreBuiltXPackTransportClient.java:55) ~[x-pack-transport-5.4.3.jar:5.4.3] at org.elasticsearch.xpack.client.PreBuiltXPackTransportClient.(PreBuiltXPackTransportClient.java:50) ~[x-pack-transport-5.4.3.jar:5.4.3] at org.elasticsearch.xpack.client.PreBuiltXPackTransportClient.(PreBuiltXPackTransportClient.java:46) ~[x-pack-transport-5.4.3.jar:5.4.3] at com.mastercard.customer.data.management.navigator.bff.config.ElasticSearchConfig.client(ElasticSearchConfig.java:56) ~[classes/:na] at com.mastercard.customer.data.management.navigator.bff.config.ElasticSearchConfig$$EnhancerBySpringCGLIB$$f999e02c.CGLIB$client$2() ~[classes/:na] at com.mastercard.customer.data.management.navigator.bff.config.ElasticSearchConfig$$EnhancerBySpringCGLIB$$f999e02c$$FastClassBySpringCGLIB$$d904a6aa.invoke() ~[classes/:na] at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE] at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE] at com.mastercard.customer.data.management.navigator.bff.config.ElasticSearchConfig$$EnhancerBySpringCGLIB$$f999e02c.client() ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_162] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_162] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_162] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_162] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]
When searched on multiple sources
https://discuss.elastic.co/t/failed-to-load-plugin-class-org-elasticsearch-xpack-xpackplugin/183299
https://discuss.elastic.co/t/elasticsearch-doesnt-start-anymore-after-x-pack-settings/119200
and many more like that figure out this class is coming from x-pack-api-5.4.3,jar and when tried to open this jar in decompiler figure out nothing. attached image. I also tried different version of same jar and getting same problem.
Used dependencies are as below.
<!-- Start x-pack -->
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<!-- <version>6.2.4</version> -->
<version>5.4.3</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>x-pack-transport</artifactId>
<version>5.4.3</version>
</dependency>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>5.3.0</version>
</dependency>
<dependency>
<groupId>com.unboundid</groupId>
<artifactId>unboundid-ldapsdk</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.58</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcpkix-jdk15on</artifactId>
<version>1.58</version>
</dependency>
<!-- End x-pack -->
And used client code as below :
client = new PreBuiltXPackTransportClient(Settings.builder()
.put("xpack.security.transport.ssl.enabled", true)
//.put("xpack.security.transport.ssl.key", "/path/to/client.key")
.put("xpack.security.transport.ssl.certificate", "cert.jks")
.put("xpack.security.transport.ssl.certificate_authorities", "cert.jks")
.put("xpack.security.transport.ssl.enabled", "true")
.put("xpack.security.transport.ssl.keystore.password", "changeme")
.put("xpack.security.transport.ssl.truststore.password", "changeme")
.build())
.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host), port));
Thankful for any help.
