Package org.apache.tomee.catalina.websocket

Source Code of org.apache.tomee.catalina.websocket.JavaEEDefaultServerEnpointConfigurator

/*
* 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.tomee.catalina.websocket;

import org.apache.tomcat.InstanceManager;
import org.apache.tomcat.websocket.server.DefaultServerEndpointConfigurator;

import java.util.Map;

public class JavaEEDefaultServerEnpointConfigurator extends DefaultServerEndpointConfigurator {
    private final Map<ClassLoader, InstanceManager> instanceManagers;

    public JavaEEDefaultServerEnpointConfigurator(final Map<ClassLoader, InstanceManager> instanceManagers) {
        this.instanceManagers = instanceManagers;
    }

    @Override
    public <T> T getEndpointInstance(final Class<T> clazz) throws InstantiationException {
        final InstanceManager instanceManager = instanceManagers.get(clazz.getClassLoader());
        if (instanceManager == null) {
            return super.getEndpointInstance(clazz);
        }

        try {
            return clazz.cast(instanceManager.newInstance(clazz));
        } catch (final Exception e) {
            if (InstantiationException.class.isInstance(e)) {
                throw InstantiationException.class.cast(e);
            }
            throw new InstantiationException(e.getMessage());
        }
    }
}
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