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package org.glassfish.admin.amx.impl.j2ee;

import org.glassfish.admin.amx.j2ee.JVM;

import javax.management.ObjectName;
import org.glassfish.admin.amx.j2ee.J2EEManagedObject;

/**
Identifies a Java VM being utilized by a server.
 */
public final class JVMImpl
        extends J2EEManagedObjectImplBase {
    public static final Class INTF = JVM.class;

    public JVMImpl(
            final ObjectName parentObjectName, final Metadata meta) {
        super(parentObjectName, meta, INTF);
    }

    public String getjavaVersion() {
        return System.getProperty("java.version");
    }

    public String getjavaVendor() {
        return System.getProperty("java.vendor");
    }

    public String getnode() {
        String fullyQualifiedHostName = "localhost";

        /*
        Underlying MBean does not comply with JSR77.3.4.1.3, which states:
        "Identifies the node (machine) this JVM is running on. The value of the node
        attribute must be the fully quailified hostname of the node the JVM is running on."

        value seems to be of the form: BLACK/129.150.29.138

        Roll our own instead.
         */
        try {
            fullyQualifiedHostName = java.net.InetAddress.getLocalHost().getCanonicalHostName();
        } catch (java.net.UnknownHostException e) {
        }

        return (fullyQualifiedHostName);
    }
}