software.amazon.awssdk.services.cognitoidentity.endpoints.internal.DefaultPartitionDataProvider Maven / Gradle / Ivy

Go to download
/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. 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 software.amazon.awssdk.services.cognitoidentity.endpoints.internal;

import java.io.InputStream;
import software.amazon.awssdk.annotations.SdkInternalApi;
import software.amazon.awssdk.protocols.jsoncore.JsonNode;
import software.amazon.awssdk.utils.IoUtils;
import software.amazon.awssdk.utils.Lazy;

@SdkInternalApi
public final class DefaultPartitionDataProvider implements PartitionDataProvider {
    private static final String DEFAULT_PARTITIONS_DATA = "partitions.json";

    private static final Lazy PARTITIONS = new Lazy<>(DefaultPartitionDataProvider::doLoadPartitions);

    @Override
    public Partitions loadPartitions() {
        return PARTITIONS.getValue();
    }

    private static Partitions doLoadPartitions() {
        InputStream json = DefaultPartitionDataProvider.class.getResourceAsStream(DEFAULT_PARTITIONS_DATA);
        try {
            return Partitions.fromNode(JsonNode.parser().parse(json));
        } finally {
            IoUtils.closeQuietly(json, null);
        }
    }
}