Class: Interferon::HostSources::AwsRds

Inherits:
Object
  • Object
show all
Defined in:
lib/interferon/host_sources/aws_rds.rb

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ AwsRds

Returns a new instance of AwsRds.



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# File 'lib/interferon/host_sources/aws_rds.rb', line 5

def initialize(options)
  missing = %w(access_key_id secret_access_key).reject { |r| options.key?(r) }

  AWS.config(access_key_id: options['access_key_id'],
             secret_access_key: options['secret_access_key']) if missing.empty?

  # initialize a list of regions to check
  @regions = if options['regions'] && !options['regions'].empty?
               options['regions']
             else
               AWS.regions.map(&:name)
             end
end

Instance Method Details

#list_hosts ⇒ Object 



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# File 'lib/interferon/host_sources/aws_rds.rb', line 19

def list_hosts
  hosts = []

  @regions.each do |region|
    rds = AWS::RDS.new(region: region)

    AWS.memoize do
      rds.instances.each do |instance|
        # get the tags for the instance
        arn = arn(region, instance.id)
        tag_list = rds.client.list_tags_for_resource(resource_name: arn)[:tag_list]
        tags = Hash[tag_list.map { |h| [h[:key], h[:value]] }]

        tags['owners'] ||= ''
        tags['owner_groups'] ||= ''

        # build the host data for this instance
        hosts << {
          source: 'aws_rds',
          region: region,
          instance_id: instance.id,
          db_name: instance.db_name,
          engine: instance.engine,
          engine_version: instance.engine_version,

          # metrics
          allocated_storage: instance.allocated_storage,
          iops: instance.iops,

          # replication info
          is_replica: !instance.read_replica_source_db_instance_identifier.nil?,
          replica_source_name: instance.read_replica_source_db_instance_identifier,
          replica_names: instance.read_replica_db_instance_identifiers.join(','),
          replicas: instance.read_replica_db_instance_identifiers.count,

          owners: tags['owners'].split(','),
          owner_groups: tags['owner_groups'].split(','),

          db_env: tags['db_env'],
          db_role: tags['db_role'],
        }
      end
    end
  end

  hosts
end