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Base classes for Brooklyn software process entities
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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.brooklyn.entity.java;

import org.apache.brooklyn.config.ConfigKey;
import org.apache.brooklyn.core.config.ConfigKeys;
import org.apache.brooklyn.core.config.MapConfigKey;
import org.apache.brooklyn.core.config.SetConfigKey;
import org.apache.brooklyn.util.core.flags.SetFromFlag;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;

public interface UsesJava {

    /** system properties (-D) to append to JAVA_OPTS; normally accessed through {@link JavaEntityMethods#javaSysProp(String)} */
    @SetFromFlag("javaSysProps")
    public static final MapConfigKey JAVA_SYSPROPS = new MapConfigKey(String.class,
            "java.sysprops", 
            "Java command line system properties (converted automatically into the format '-Dkey=value')",
            Maps.newLinkedHashMap());

    /**
     * Used to set java options. These options are prepended to the defaults.
     * They can also be used to override defaults. The rules for overrides are:
     * 
     *   If contains a mutually exclusive setting, then the others are removed. Those supported are:
     *     
     *       "-client" and "-server"
     *     
     *   
If value has a well-known prefix indicating it's a key-value pair. Those supported are:
     *     
     *       "-Xmx"
     *       
"-Xms"
     *       
"-Xss"
     *     
     *   
If value contains "=" then see if there's a default that matches the section up to the "=".
     *       If there is, then remove the original and just include this.
     *       e.g. "-XX:MaxPermSize=512m" could be overridden in this way.
     * 
     */
    @SetFromFlag("javaOpts")
    public static final SetConfigKey JAVA_OPTS = new SetConfigKey(String.class,
            "java.opts", "Java command line options", ImmutableSet.of());

    public static final ConfigKey CHECK_JAVA_HOSTNAME_BUG = ConfigKeys.newBooleanConfigKey(
            "java.check.hostname.bug", 
            "Check whether hostname is too long and will likely crash Java 1.7 "
                    + "due to bug http://bugs.java.com/view_bug.do?bug_id=7089443", 
            true);

    @SetFromFlag("javaVersionRequired")
    ConfigKey JAVA_VERSION_REQUIRED = ConfigKeys.newStringConfigKey("java.version.required", "Java version required", "1.7");


}