/*
 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package jdk.vm.ci.services.internal;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
import sun.management.spi.PlatformMBeanProvider;

public final class JVMCIMXBeans extends PlatformMBeanProvider {
    @Override
    public List<PlatformComponent<?>> getPlatformComponentList() {
        // somehow obtain the bean from JVMCI compiler
        HotSpotJVMCIRuntime runtime = HotSpotJVMCIRuntime.runtime();
        if (runtime.mbeanName() != null) {
            return Collections.singletonList(new HotSpotRuntimeMBeanComponent(runtime));
        }
        return Collections.emptyList();
    }

    private static final class HotSpotRuntimeMBeanComponent implements PlatformComponent<Object> {
        private final HotSpotJVMCIRuntime runtime;

        HotSpotRuntimeMBeanComponent(HotSpotJVMCIRuntime runtime) {
            this.runtime = runtime;
        }

        @Override
        public Set<Class<?>> mbeanInterfaces() {
            return Collections.singleton(runtime.mbean().getClass());
        }

        @Override
        public Set<String> mbeanInterfaceNames() {
            return Collections.singleton(runtime.mbeanName());
        }

        @Override
        public String getObjectNamePattern() {
            return runtime.mbeanName();
        }

        @Override
        public Map<String, Object> nameToMBeanMap() {
            return Collections.<String, Object>singletonMap(
                runtime.mbeanName(),
                runtime.mbean());
        }

    }
}