com.kdgregory.logging.aws.internal.Utils Maven / Gradle / Ivy
// Copyright (c) Keith D Gregory
//
// 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.kdgregory.logging.aws.internal;
import java.lang.reflect.Method;
/**
* Various static utility functions. Most are copied from KDGCommons, to avoid
* potential dependency conflicts.
*/
public class Utils
{
/**
* Sleeps until the specified time elapses or the thread is interrupted.
*/
public static void sleepQuietly(long time)
{
try
{
Thread.sleep(time);
}
catch (InterruptedException ignored)
{
// this will simply break to the caller
}
}
/**
* Retrieves the current AWS account ID, using reflection so that we don't
* have a hard reference to the STS SDK JAR (ie, if you don't want account
* IDs you don't need the JAR).
*
* Returns null if unable to determine the account ID for any reason.
*/
public static String retrieveAWSAccountId()
{
try
{
Class stsClientKlass = Class.forName("com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient");
Class requestKlass = Class.forName("com.amazonaws.services.securitytoken.model.GetCallerIdentityRequest");
Class responseKlass = Class.forName("com.amazonaws.services.securitytoken.model.GetCallerIdentityResult");
Object stsClient = stsClientKlass.newInstance();
Object request = requestKlass.newInstance();
Method requestMethod = stsClientKlass.getMethod("getCallerIdentity", requestKlass);
Object response = requestMethod.invoke(stsClient, request);
Method getAccountMethod = responseKlass.getMethod("getAccount");
return (String)getAccountMethod.invoke(response);
}
catch (Throwable ex)
{
// TODO - report exception
return null;
}
}
}