func getRegionFromECSMetadata()

in pkg/conn/conn.go [120:147]

• 28 lines of code
• 4 McCabe index (conditional complexity)

func getRegionFromECSMetadata() string {
	var ecsMetadataEnabled string
	var metadataFilePath string
	var metadataFile []byte
	var dat map[string]interface{}
	var taskArn []string
	var err error
	var region string
	region = ""
	ecsMetadataEnabled = os.Getenv("ECS_ENABLE_CONTAINER_METADATA")
	ecsMetadataEnabled = strings.ToLower(ecsMetadataEnabled)
	if ecsMetadataEnabled == "true" {
		metadataFilePath = os.Getenv("ECS_CONTAINER_METADATA_FILE")
		metadataFile, err = ioutil.ReadFile(metadataFilePath)
		if err != nil {
			log.Errorf("Unable to open ECS metadata file: %v\n", err)
		} else {
			if err := json.Unmarshal(metadataFile, &dat); err != nil {
				log.Errorf("Unable to read ECS metadata file contents: %v", err)
			} else {
				taskArn = strings.Split(dat["TaskARN"].(string), ":")
				region = taskArn[3]
				log.Debugf("Fetch region %v from ECS metadata file", region)
			}
		}
	}
	return region
}