org.wallride.autoconfigure.WallRideInitializer.java Source code

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Here is the source code for org.wallride.autoconfigure.WallRideInitializer.java

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/*
 * Copyright 2014 Tagbangers, 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 org.wallride.autoconfigure;

import com.amazonaws.ClientConfiguration;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import org.springframework.boot.context.config.ConfigFileApplicationListener;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.cloud.aws.core.io.s3.PathMatchingSimpleStorageResourcePatternResolver;
import org.springframework.cloud.aws.core.io.s3.SimpleStorageResourceLoader;
import org.springframework.context.ApplicationListener;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.StandardEnvironment;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.util.StringUtils;

public class WallRideInitializer implements ApplicationListener<ApplicationStartedEvent> {

    /**
     * @see ConfigFileApplicationListener#DEFAULT_SEARCH_LOCATIONS
     */
    private static final String DEFAULT_CONFIG_SEARCH_LOCATIONS = "classpath:/,classpath:/config/,file:./,file:./config/";

    @Override
    public void onApplicationEvent(ApplicationStartedEvent event) {
        event.getSpringApplication().setEnvironment(createEnvironment(event));
        event.getSpringApplication().setResourceLoader(createResourceLoader());
    }

    public static ConfigurableEnvironment createEnvironment(ApplicationStartedEvent event) {
        StandardEnvironment environment = new StandardEnvironment();

        String home = environment.getProperty(WallRideProperties.HOME_PROPERTY);
        if (!StringUtils.hasText(home)) {
            throw new IllegalStateException(WallRideProperties.HOME_PROPERTY + " is empty");
        }
        if (!home.endsWith("/")) {
            home = home + "/";
        }

        String config = home + WallRideProperties.DEFAULT_CONFIG_PATH_NAME;
        String media = home + WallRideProperties.DEFAULT_MEDIA_PATH_NAME;

        System.setProperty(WallRideProperties.CONFIG_LOCATION_PROPERTY, config);
        System.setProperty(WallRideProperties.MEDIA_LOCATION_PROPERTY, media);

        event.getSpringApplication().getListeners().stream()
                .filter(listener -> listener.getClass().isAssignableFrom(ConfigFileApplicationListener.class))
                .map(listener -> (ConfigFileApplicationListener) listener)
                .forEach(listener -> listener.setSearchLocations(DEFAULT_CONFIG_SEARCH_LOCATIONS + "," + config));

        return environment;
    }

    public static ResourceLoader createResourceLoader() {
        ClientConfiguration configuration = new ClientConfiguration();
        configuration.setMaxConnections(1000);
        AmazonS3 amazonS3 = new AmazonS3Client(configuration);

        SimpleStorageResourceLoader resourceLoader = new SimpleStorageResourceLoader(amazonS3);
        try {
            resourceLoader.afterPropertiesSet();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return new PathMatchingSimpleStorageResourcePatternResolver(amazonS3, resourceLoader,
                new PathMatchingResourcePatternResolver());
    }
}