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#### Copyright 2016 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.
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#### The following file configures the AWS CloudWatch agent to push logs to a Log Group in CloudWatch Logs.
#### 
#### The configuration below sets the logs to be pushed, the Log Group name to push the logs to,
#### the Log Stream name as the instance id, and the log retention period.
#### This example streams /var/log/messages, but you can modify it stream other files.
#### `retention_in_days` is optional.
####
#### Find more information about configuring the CloudWatch agent here:
#### https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html
####
#### You can then access the CloudWatch Logs by accessing the AWS CloudWatch Console and clicking
#### the "Logs" link on the left. The Log Group name will follow this format:
####
#### /aws/elasticbeanstalk/<environment name>/<full log name path>
####
#### Please note this configuration should be used additionally to the "Log Streaming" feature:
#### http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/AWSHowTo.cloudwatchlogs.html
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files:
  "/opt/aws/amazon-cloudwatch-agent/etc/my_log_config.json":
    mode: "0644"
    owner: root
    group: root
    content: |
      {
        "logs": {
          "logs_collected": {
            "files": {
              "collect_list": [
                {
                  "file_path": "/var/log/messages",
                  "log_group_name": "`{"Fn::Join":["/", ["/aws/elasticbeanstalk", { "Ref":"AWSEBEnvironmentName" }, "var/log/messages"]]}`",
                  "log_stream_name": "{instance_id}",
                  "retention_in_days": 7
                }
              ]
            }
          }
        }
      }
container_commands:
  01_append_cloudwatch_agent_config:
    command: /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a append-config -s -c file:/opt/aws/amazon-cloudwatch-agent/etc/my_log_config.json
  02_remove_backup_file:
    command: rm -f /opt/aws/amazon-cloudwatch-agent/etc/my_log_config.json.bak
    ignoreErrors: true