jp.classmethod.aws.RegionFactoryBean.java Source code

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Here is the source code for jp.classmethod.aws.RegionFactoryBean.java

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/*
 * Copyright 2013-2014 Classmethod, Inc.
 *
 * 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 jp.classmethod.aws;

import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * Spring factyory bean for {@link Region}.
 *
 * @since 1.0
 * @author daisuke
 */
public class RegionFactoryBean implements FactoryBean<Region> {

    private static Logger logger = LoggerFactory.getLogger(RegionFactoryBean.class);

    @Autowired
    InstanceMetadata metadata;

    private Regions defaultRegion = Regions.US_EAST_1;

    public Regions getDefaultRegion() {
        return defaultRegion;
    }

    @Override
    public Region getObject() {
        Regions region = defaultRegion;
        for (Regions r : Regions.values()) {
            if (r.getName().equals(metadata.getRegion())) {
                region = r;
                break;
            }
        }

        Region bean = Region.getRegion(region);
        logger.info("loaded {}", bean);
        return bean;
    }

    @Override
    public Class<?> getObjectType() {
        return Region.class;
    }

    @Override
    public boolean isSingleton() {
        return true;
    }

    public void setDefaultRegion(Regions defaultRegion) {
        this.defaultRegion = defaultRegion;
    }
}