VmEnvironmentFactory.java

/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 * 
 * Licensed 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 com.google.apphosting.vmruntime;

import com.google.apphosting.api.ApiProxy;

/**
 * Simple implementation of ApiProxy.EnvironmentFactory. It just returns the default environment,
 * with a thread local copy of the attributes, since they are mutable.
 */
public class VmEnvironmentFactory implements ApiProxy.EnvironmentFactory {
    private final VmApiProxyEnvironment defaultEnvironment;

    public VmEnvironmentFactory(VmApiProxyEnvironment defaultEnvironment) {
        this.defaultEnvironment = defaultEnvironment;
    }

    @Override
    public ApiProxy.Environment newEnvironment() {
        defaultEnvironment.setThreadLocalAttributes();
        return defaultEnvironment;
    }
}