com.amazon.AmazonClientManager.java Source code

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Here is the source code for com.amazon.AmazonClientManager.java

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/*
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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.amazon;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.simpledb.AmazonSimpleDBClient;

import android.util.Log;

/**
* This class is used to get clients to the various AWS services.  Before accessing a client 
* the credentials should be checked to ensure validity.
*/
public class AmazonClientManager {
    private static final String LOG_TAG = "AmazonClientManager";

    private AmazonSimpleDBClient sdbClient = null;

    public AmazonClientManager() {
    }

    public AmazonSimpleDBClient sdb() {
        validateCredentials();
        return sdbClient;
    }

    public boolean hasCredentials() {
        return PropertyLoader.getInstance().hasCredentials();
    }

    public void validateCredentials() {
        if (sdbClient == null) {
            Log.i(LOG_TAG, "Creating New Clients.");

            Region region = Region.getRegion(Regions.AP_SOUTHEAST_1);

            AWSCredentials credentials = new BasicAWSCredentials(PropertyLoader.getInstance().getAccessKey(),
                    PropertyLoader.getInstance().getSecretKey());

            sdbClient = new AmazonSimpleDBClient(credentials);
            sdbClient.setRegion(region);
        }
    }

    public void clearClients() {
        sdbClient = null;
    }
}