InfoResource.java

package de.vipra.rest.resource;

import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;

import de.vipra.rest.model.Wrapper;
import de.vipra.util.BuildInfo;
import de.vipra.util.NestedMap;
import de.vipra.util.StringUtils;

@Path("info")
public class InfoResource {

	@Context
	UriInfo uri;

	private static final NestedMap info = new NestedMap();

	static {
		try {
			RuntimeMXBean rb = ManagementFactory.getRuntimeMXBean();
			Runtime rt = Runtime.getRuntime();
			BuildInfo buildInfo = new BuildInfo();

			// vm info
			info.put("vm.starttime", rb.getStartTime());
			info.put("vm.uptime", rb.getUptime());
			info.put("vm.args", StringUtils.join(rb.getInputArguments()));
			info.put("vm.java.vendor", System.getProperty("java.vendor"));
			info.put("vm.java.version", System.getProperty("java.version"));

			// host info
			info.put("host.cores", rt.availableProcessors());
			info.put("host.memory", rt.maxMemory());
			info.put("host.os.name", System.getProperty("os.name"));
			info.put("host.os.arch", System.getProperty("os.arch"));
			info.put("host.os.version", System.getProperty("os.version"));

			// app info
			info.put("app.gitsha1", buildInfo.getGitSHA1());
			info.put("app.version", buildInfo.getVersion());
			info.put("app.builddate", buildInfo.getBuildDate());
		} catch (Exception e) {
			info.put("error", e.getMessage());
		}
	}

	@GET
	@Produces(MediaType.APPLICATION_JSON)
	public Response getInfo() {
		Wrapper<NestedMap> res = new Wrapper<>();
		return res.ok(info);
	}
}