github.com/mmcquillan/packer@v1.1.1-0.20171009221028-c85cf0483a5d/builder/alicloud/ecs/step_pre_validate.go (about)

     1  package ecs
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/denverdino/aliyungo/common"
     7  	"github.com/denverdino/aliyungo/ecs"
     8  	"github.com/hashicorp/packer/packer"
     9  	"github.com/mitchellh/multistep"
    10  )
    11  
    12  type stepPreValidate struct {
    13  	AlicloudDestImageName string
    14  	ForceDelete           bool
    15  }
    16  
    17  func (s *stepPreValidate) Run(state multistep.StateBag) multistep.StepAction {
    18  	ui := state.Get("ui").(packer.Ui)
    19  	if s.ForceDelete {
    20  		ui.Say("Force delete flag found, skipping prevalidating image name.")
    21  		return multistep.ActionContinue
    22  	}
    23  
    24  	client := state.Get("client").(*ecs.Client)
    25  	config := state.Get("config").(Config)
    26  	ui.Say("Prevalidating image name...")
    27  	images, _, err := client.DescribeImages(&ecs.DescribeImagesArgs{
    28  		ImageName: s.AlicloudDestImageName,
    29  		RegionId:  common.Region(config.AlicloudRegion)})
    30  
    31  	if err != nil {
    32  		err := fmt.Errorf("Error querying alicloud image: %s", err)
    33  		state.Put("error", err)
    34  		ui.Error(err.Error())
    35  		return multistep.ActionHalt
    36  	}
    37  
    38  	if len(images) > 0 {
    39  		err := fmt.Errorf("Error: name conflicts with an existing alicloud image: %s", images[0].ImageId)
    40  		state.Put("error", err)
    41  		ui.Error(err.Error())
    42  		return multistep.ActionHalt
    43  	}
    44  
    45  	return multistep.ActionContinue
    46  }
    47  
    48  func (s *stepPreValidate) Cleanup(multistep.StateBag) {}