def resolveByTags()

in src/main/scala/com/gu/ssm/aws/EC2.scala [25:38]

• 11 lines of code
• 1 McCabe index (conditional complexity)

  def resolveByTags(tagValues: List[String], client: AmazonEC2Async)(implicit ec: ExecutionContext): Attempt[List[Instance]] = {
    val allTags = tagValues ++ tagValues.map(_.toUpperCase) ++ tagValues.map(_.toLowerCase)

    // if user has provided fewer than 3 tags then assume order app,stage,stack
    val tagOrder = List("App", "Stage", "Stack")
    val filters = new Filter("instance-state-name", List("running").asJava) ::
        tagOrder.take(tagValues.length).map(makeFilter(_, allTags))

    val request = new DescribeInstancesRequest()
      .withFilters(
        filters: _*
      )
    handleAWSErrs(awsToScala(client.describeInstancesAsync)(request).map(extractInstances))
  }