Utils.java 文件源码

/**
 *  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).
 *  <p>
 *  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 (Exception ex)
    {
        LogLog.warn("substitutions: unable to retrieve AWS account ID");
        return null;
    }
}