/*
* Copyright 2013-2014 the original author or authors.
*
* 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.springframework.cloud.aws.context.support.env;
import com.amazonaws.AmazonClientException;
import com.amazonaws.util.EC2MetadataUtils;
/**
* @author Lukasz Luszczynski
*/
public final class AwsCloudEnvironmentCheckUtils {
private static final String EC2_METADATA_ROOT = "/latest/meta-data";
private AwsCloudEnvironmentCheckUtils() {
}
private static Boolean isCloudEnvironment;
public static boolean isRunningOnCloudEnvironment() {
if (isCloudEnvironment == null) {
try {
isCloudEnvironment = EC2MetadataUtils.getData(EC2_METADATA_ROOT + "/instance-id", 1) != null;
} catch (AmazonClientException e) {
isCloudEnvironment = false;
}
}
return isCloudEnvironment;
}
}