core/src/main/java/org/jclouds/Context.java

/*
 * 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;

import java.io.Closeable;

import org.jclouds.domain.Location;
import org.jclouds.internal.ContextImpl;
import org.jclouds.providers.ProviderMetadata;
import org.jclouds.rest.Utils;

import com.google.inject.ImplementedBy;

/**
 * Represents an authenticated context to the cloud.
 * 
 * <h2>Note</h2> Please issue {@link #close()} when you are finished with this context in order to
 * release resources.
 */
@ImplementedBy(ContextImpl.class)
public interface Context extends Location, Closeable {

  /**
   * Identifies the Context. This is a unique name optionally specified by the user and safe to index on.
   * The purpose of this property is to provide means to distinct between multiple contexts, without having to check
   * multiple properties or have explicit knowledge of how the context was created.
   * @return
   */
   String getName();

   /**
    * @return the providerMetadata used to create this context
    * @see ContextBuilder#newBuilder(org.jclouds.providers.ProviderMetadata)
    */
   ProviderMetadata getProviderMetadata();

   /**
    * @return the current login user, access key, email, or whatever the 'identity' field was building the context.
    * @see ApiMetadata#getDefaultIdentity
    */
   String getIdentity();

   Utils utils();

   /**
    * Closes all connections, including executor service
    */
   @Override
   void close();

   /**
    * @return true if context open
    */
   boolean isOpen();
}