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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.modules.objectstorage;

import java.io.FileNotFoundException;

import javax.inject.Singleton;

import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.ex.ConfigurationException;
import org.apache.james.blob.objectstorage.aws.S3BlobStoreConfiguration;
import org.apache.james.blob.objectstorage.aws.S3BlobStoreDAO;
import org.apache.james.modules.mailbox.ConfigurationComponent;
import org.apache.james.utils.InitializationOperation;
import org.apache.james.utils.InitilizationOperationBuilder;
import org.apache.james.utils.PropertiesProvider;

import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import com.google.inject.multibindings.ProvidesIntoSet;

public class S3BlobStoreModule extends AbstractModule {

    @Provides
    @Singleton
    private S3BlobStoreConfiguration getObjectStorageConfiguration(PropertiesProvider propertiesProvider) throws ConfigurationException {
        try {
            Configuration configuration = propertiesProvider.getConfigurations(ConfigurationComponent.NAMES);
            return S3BlobStoreConfigurationReader.from(configuration);
        } catch (FileNotFoundException e) {
            throw new ConfigurationException(ConfigurationComponent.NAME + " configuration was not found");
        }
    }

    @ProvidesIntoSet
    InitializationOperation startS3BlobStoreDAO(S3BlobStoreDAO s3BlobStoreDAO) {
        return InitilizationOperationBuilder
            .forClass(S3BlobStoreDAO.class)
            .init(s3BlobStoreDAO::start);
    }
}
