/*
 * Copyright 2012-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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.
 */

/**
 * <p>
 * You can use Amazon CloudWatch Logs to monitor, store, and access your log files from EC2 instances, Amazon
 * CloudTrail, or other sources. You can then retrieve the associated log data from CloudWatch Logs using the Amazon
 * CloudWatch console, the CloudWatch Logs commands in the AWS CLI, the CloudWatch Logs API, or the CloudWatch Logs SDK.
 * </p>
 * <p>
 * You can use CloudWatch Logs to:
 * </p>
 * <ul>
 * <li>
 * <p>
 * <b>Monitor Logs from Amazon EC2 Instances in Real-time</b>: You can use CloudWatch Logs to monitor applications and
 * systems using log data. For example, CloudWatch Logs can track the number of errors that occur in your application
 * logs and send you a notification whenever the rate of errors exceeds a threshold you specify. CloudWatch Logs uses
 * your log data for monitoring; so, no code changes are required. For example, you can monitor application logs for
 * specific literal terms (such as "NullReferenceException") or count the number of occurrences of a literal term at a
 * particular position in log data (such as "404" status codes in an Apache access log). When the term you are searching
 * for is found, CloudWatch Logs reports the data to a Amazon CloudWatch metric that you specify.
 * </p>
 * </li>
 * <li>
 * <p>
 * <b>Monitor Amazon CloudTrail Logged Events</b>: You can create alarms in Amazon CloudWatch and receive notifications
 * of particular API activity as captured by CloudTrail and use the notification to perform troubleshooting.
 * </p>
 * </li>
 * <li>
 * <p>
 * <b>Archive Log Data</b>: You can use CloudWatch Logs to store your log data in highly durable storage. You can change
 * the log retention setting so that any log events older than this setting are automatically deleted. The CloudWatch
 * Logs agent makes it easy to quickly send both rotated and non-rotated log data off of a host and into the log
 * service. You can then access the raw log data when you need it.
 * </p>
 * </li>
 * </ul>
 */
package com.amazonaws.services.logs;