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Prometheus 'expected label name, got "BCLOSE"' error

I have an application running on port 7070 on my local. It exposes and endpoint /metrics and shows all the tags that are available. Prometheus is not able to get these data and it says 'expected label name, got "BCLOSE"'.
I have been trying to figure this out but not sure why this code doesn't work:
import io.micrometer.prometheus.PrometheusMeterRegistry;
import io.prometheus.client.exporter.common.TextFormat;
import metrics.PrometheusRegistry;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
#Path("/metrics")
public class MetricsController {
private final PrometheusMeterRegistry prometheusRegistry = PrometheusRegistry.INSTANCE();
#GET
public Response getMetrics(#Context HttpHeaders headers) {
Writer writer = new StringWriter();
try {
TextFormat.write004(writer, prometheusRegistry.getPrometheusRegistry().metricFamilySamples());
} catch (IOException e) {
e.printStackTrace();
}
return writer.toString();
}
}
Also, the application is neither a sprintboot nor a spring project.
Tried this:
#GET
public Response getMetrics(#Context HttpHeaders headers) {
String accept = headers.getRequestHeader("Accept").get(0);
System.out.println("Accept Header --------------------------> " + accept);
return Response.ok(prometheusRegistry.scrape(), "application/openmetrics-text").build();
}
Even then the same error as above SS.

This worked for me:
#GET
public Response getMetrics() {
return Response.ok(prometheusRegistry.scrape(), TextFormat.CONTENT_TYPE_004).build();
}

JDA Will not register my event(Discord Bot Java)

I've been having a problem with registering JDA events. Everytime I start the bot, it shows this. Can someone help me with this please?
Here's my Main code:
import Events.Information;
import net.dv8tion.jda.api.EmbedBuilder;
import net.dv8tion.jda.api.JDA;
import net.dv8tion.jda.api.JDABuilder;
import net.dv8tion.jda.api.entities.Activity;
import net.dv8tion.jda.api.entities.ChannelType;
import net.dv8tion.jda.api.entities.Message;
import net.dv8tion.jda.api.entities.MessageChannel;
import net.dv8tion.jda.api.events.ReadyEvent;
import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
import net.dv8tion.jda.api.events.message.guild.GuildMessageReceivedEvent;
import net.dv8tion.jda.api.hooks.ListenerAdapter;
import javax.security.auth.login.LoginException;
public class Main {
public static String prefix = "!";
public static void main(String[] args) throws LoginException {
JDABuilder jda = JDABuilder.createDefault("I inserted bot key here");
jda.setActivity(Activity.watching("baldness"));
jda.addEventListeners(new Information());
jda.build();
}
}
Here's my Information class code:
package Events;
import com.sun.tools.javac.Main;
import net.dv8tion.jda.api.EmbedBuilder;
import net.dv8tion.jda.api.events.message.guild.GuildMessageReceivedEvent;
public class Information {
public void onGuildMessageReceived(GuildMessageReceivedEvent e) {
String[] args = e.getMessage().getContentRaw().split("\\s+");
if (args[0].equals("!commands")) {
EmbedBuilder info = new EmbedBuilder();
info.setTitle("Commands");
info.setDescription("!info - Pops up with this!");
info.setColor(0xf45642);
info.setFooter("Bot created by Jason", e.getMember().getUser().getAvatarUrl());
e.getChannel().sendTyping().queue();
e.getChannel().sendMessage(info.build()).queue();
}
}
}
Here's my layering of classes and packages:
Image

Error while adding servlet mapping for path

I am trying to deploy my application on a local Websphere Application Server (Version "8.5.5.5").
If I click "Run on Server", I always get:
Error while adding servlet mapping for path-->/xcc-admin/test/query,
wrapper-->ServletWrapper[XCCAdminServlet.XCCAdminMain:[/XCCAdminMain,
/xcc-admin/rest/query, /xcc-admin/test/query]],
application-->xcc-admin.
Code:
package XCCAdminServlet;
import java.io.IOException;
import javax.annotation.Resource;
import javax.annotation.Resource.AuthenticationType;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
/**
* Servlet implementation class XCCAdminMain
*/
#WebServlet({"/XCCAdminMain", "/xcc-admin/rest/query", "/xcc-admin/test/query"})
#Resource(name = "jdbc/MyDataSource", type = javax.sql.DataSource.class, shareable = true, authenticationType = AuthenticationType.CONTAINER)
public class XCCAdminMain extends HttpServlet {
private static final long serialVersionUID = 1L;
#PersistenceUnit(unitName = "XCCAdminUnit")
private EntityManagerFactory emf;
/**
* #see HttpServlet#HttpServlet()
*/
public XCCAdminMain() {
super();
// TODO Auto-generated constructor stub
}
#GET
#Path("/{param}")
public Response getQuery(#PathParam("param") String msg) throws ServletException {
return Response.status( 200 ).entity( "Get Request received, queryparam: " + msg ).build();
}
}
How to fix this?

Using a Session interface in another class

I have a web application I am making using a websocket API to handle the websockets, here is the code for that part
package comm2.hello;
import java.io.IOException;
import java.util.ArrayList;
import javax.websocket.OnClose;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import org.apache.catalina.session.*;
#ServerEndpoint(value = "/echo")
public class wschat {
private static ArrayList<Session> sessionList = new ArrayList<Session>();
#OnOpen
public void onOpen(Session session) {
try {
sessionList.add(session);
// asynchronous communication
session.getBasicRemote().sendText("hello");
} catch (IOException e) {
}
}
public void send(String text, Session session) throws IOException {
session.getBasicRemote().sendText(text);
}
}
I am trying to have another java class then call into the send method to send messages, using the following code.
package comms;
import java.io.IOException;
import java.util.ArrayList;
import javax.websocket.Session;
import javax.websocket.Session;
import comm2.hello.*;
public class main {
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
wschat h = new wschat();
String text = "hello";
//session shouldn't be null but not sure what to make it
Session session = null;
h.send(text,session);
}
}
As you can see, I have the session variable in the main.java class set to null which will thus always produce a null pointer error. This is because I am not sure what to make session equal to, does anyone have any idea what to initialize the session variable to in main.java?

java unit test mock HttpClient and webdav

Hello I have a class for doing webdav related operations such as creating a directory, Implementatiion can be seen below (the createDir method). The question is how to test it nicely, perhaps using EasyMock or a similar lib. Any ideas? thanks!
package foobar;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.jackrabbit.webdav.client.methods.DavMethod;
import org.apache.jackrabbit.webdav.client.methods.MkColMethod;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import mypackage.httpdclient.util.URLHandler;
public class WebDavImpl{
private static final String SEPARATOR = " ----- ";
private HttpClient httpClient;
public StorageSpaceClientImpl() {
httpClient = new HttpClient();
}
public String createDir(String dirName) {
String response = null;
String url = URLHandler.getInstance().getDirectoryUrl(dirName);
DavMethod mkcol = new MkColMethod(url);
try {
httpClient.executeMethod(mkcol);
response = mkcol.getStatusCode() + SEPARATOR + mkcol.getStatusText();
} catch (IOException ex) {
} finally {
mkcol.releaseConnection();
}
return response;
}
}