/*

 * Copyright (c) 2016, 2018, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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

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package jdk.jfr.internal.settings;

import java.util.Objects;

import java.util.Set;

import jdk.jfr.Description;

import jdk.jfr.BooleanFlag;

import jdk.jfr.Label;

import jdk.jfr.MetadataDefinition;

import jdk.jfr.Name;

import jdk.jfr.internal.PlatformEventType;

import jdk.jfr.internal.Type;

import jdk.jfr.internal.Control;

@MetadataDefinition

@Label("Enabled")

@Description("Record event")

@Name(Type.SETTINGS_PREFIX + "Enabled")

@BooleanFlag

public final class EnabledSetting extends Control {

    private final BooleanValue booleanValue;

    private final PlatformEventType eventType;

    public EnabledSetting(PlatformEventType eventType, String defaultValue) {

        super(defaultValue);

        this.booleanValue = BooleanValue.valueOf(defaultValue);

        this.eventType = Objects.requireNonNull(eventType);

    }

    @Override

    public String combine(Set<String> values) {

        return booleanValue.union(values);

    }

    @Override

    public void setValue(String value) {

        booleanValue.setValue(value);

        eventType.setEnabled(booleanValue.getBoolean());

        if (eventType.isEnabled() && !eventType.isJVM()) {

            if (!eventType.isInstrumented()) {

                eventType.markForInstrumentation(true);

            }

        }

    }

    @Override

    public String getValue() {

        return booleanValue.getValue();

    }

}