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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
 *
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package jdk.internal.agent.spi;

import java.util.Properties;

Service interface for management agent
/**
 * Service interface for management agent
 */
public abstract class AgentProvider {

    
Instantiates a new AgentProvider.
Throws:
SecurityException – if the subclass (and calling code) does not have RuntimePermission("sun.management.spi.AgentProvider.subclass")/**
     * Instantiates a new AgentProvider.
     *
     * @throws SecurityException if the subclass (and calling code) does not
     * have
     * {@code RuntimePermission("sun.management.spi.AgentProvider.subclass")}
     */
    protected AgentProvider() {
        this(checkSubclassPermission());
    }

    private AgentProvider(Void unused) {
    }

    private static Void checkSubclassPermission() {
        SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            sm.checkPermission(new RuntimePermission(AgentProvider.class.getName() + ".subclass"));
        }
        return null;
    }

    
Gets the name of the agent provider.
Returns:
name of agent provider/**
     * Gets the name of the agent provider.
     *
     * @return name of agent provider
     */
    public abstract String getName();

    
Initializes and starts the agent.
Throws:
IllegalStateException – if this agent has already been started./**
     * Initializes and starts the agent.
     *
     * @throws IllegalStateException if this agent has already been started.
     */
    public abstract void startAgent();

    
Initializes and starts the agent at given port and with given properties
Params:
props – environment variables for agent
Throws:
IllegalStateException – if this agent has already been started./**
     * Initializes and starts the agent at given port and with given properties
     *
     * @param props environment variables for agent
     *
     * @throws IllegalStateException if this agent has already been started.
     */
    public abstract void startAgent(Properties props);

    
Checks if agent is started and not terminated.
Returns:
true if agent is running, false otherwise./**
     * Checks if agent is started and not terminated.
     *
     * @return true if agent is running, false otherwise.
     */
    public abstract boolean isActive();

    
Stops this agent.
Throws:
IllegalStateException – if this agent is not started./**
     * Stops this agent.
     *
     * @throws IllegalStateException if this agent is not started.
     */
    public abstract void stopAgent();
}