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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.jclouds.ec2.reference;


/**
 * Configuration properties and constants used in EC2 connections.
 */
public class EC2Constants {
   /**
    * Listing the universe of amis is extremely expensive. set this to a comma separated value of
    * the ami owners you wish to use in {@link ComputeService}
    */
   public static final String PROPERTY_EC2_AMI_OWNERS = "jclouds.ec2.ami-owners";

   /**
    * Eventual consistency delay for retrieving a security group after it is created (in ms)
    */
   public static final String PROPERTY_EC2_TIMEOUT_SECURITYGROUP_PRESENT = "jclouds.ec2.timeout.securitygroup-present";

   /**
    * Whenever a node is created, automatically allocate and assign an elastic ip address, also
    * deallocate when the node is destroyed.
    */
   public static final String PROPERTY_EC2_AUTO_ALLOCATE_ELASTIC_IPS = "jclouds.ec2.auto-allocate-elastic-ips";
   
   /**
    * If this property is set to true(default), jclouds generate a name for each instance based on the group. ex.
    * i-ef34ae2 becomes hadoop-ef34ae2. Note that this depends on {@link EC2Api#getTagApi} returning present.
    */
   public static final String PROPERTY_EC2_GENERATE_INSTANCE_NAMES = "jclouds.ec2.generate-instance-names";

   protected EC2Constants() {
      throw new AssertionError("intentionally unimplemented");
   }
}