com.brighttag.agathon.aws.AwsModule.java Source code

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Here is the source code for com.brighttag.agathon.aws.AwsModule.java

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/*
 * Copyright 2014 BrightTag, 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 com.brighttag.agathon.aws;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.google.inject.Exposed;
import com.google.inject.PrivateModule;
import com.google.inject.Provides;
import com.google.inject.Singleton;
import com.google.inject.name.Named;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Guice module to wire up common AWS dependencies.
 * <br/>
 * Use of all AWS modules requires the {@code ACCESS_KEY_PROPERTY}
 * and {@code SECRET_KEY_PROPERTY} system properties to be set.
 *
 * @author codyaray
 * @since 6/4/12
 */
public class AwsModule extends PrivateModule {

    public static final String ACCESS_KEY_PROPERTY = "com.brighttag.agathon.aws.access_key";
    public static final String SECRET_KEY_PROPERTY = "com.brighttag.agathon.aws.secret_key";

    @Override
    protected void configure() {
        // Nothing to do
    }

    @Provides
    @Exposed
    @Singleton
    AWSCredentials provideAWSCredentials(@Named(ACCESS_KEY_PROPERTY) String accessKey,
            @Named(SECRET_KEY_PROPERTY) String secretKey) {
        return new BasicAWSCredentials(accessKey, secretKey);
    }

    @Provides
    @Singleton
    @Named(ACCESS_KEY_PROPERTY)
    String provideAccessKey() {
        return checkNotNull(System.getProperty(ACCESS_KEY_PROPERTY), "Access Key must be set");
    }

    @Provides
    @Singleton
    @Named(SECRET_KEY_PROPERTY)
    String provideSecretKey() {
        return checkNotNull(System.getProperty(SECRET_KEY_PROPERTY), "Secret Key must be set");
    }

}