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data_source_openstack_images_image_v2.go
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data_source_openstack_images_image_v2.go
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package openstack
import (
"fmt"
"log"
"sort"
"github.com/gophercloud/gophercloud/openstack/imageservice/v2/images"
"github.com/gophercloud/gophercloud/pagination"
"github.com/hashicorp/terraform/helper/schema"
)
func dataSourceImagesImageV2() *schema.Resource {
return &schema.Resource{
Read: dataSourceImagesImageV2Read,
Schema: map[string]*schema.Schema{
"region": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
DefaultFunc: schema.EnvDefaultFunc("OS_REGION_NAME", ""),
},
"name": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"visibility": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"owner": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"size_min": {
Type: schema.TypeInt,
Optional: true,
ForceNew: true,
},
"size_max": {
Type: schema.TypeInt,
Optional: true,
ForceNew: true,
},
"sort_key": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
Default: "name",
},
"sort_direction": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
Default: "asc",
ValidateFunc: dataSourceImagesImageV2SortDirection,
},
"tag": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"most_recent": {
Type: schema.TypeBool,
Optional: true,
Default: false,
ForceNew: true,
},
// Computed values
"container_format": {
Type: schema.TypeString,
Computed: true,
},
"disk_format": {
Type: schema.TypeString,
Computed: true,
},
"min_disk_gb": {
Type: schema.TypeInt,
Computed: true,
},
"min_ram_mb": {
Type: schema.TypeInt,
Computed: true,
},
"protected": {
Type: schema.TypeBool,
Computed: true,
},
"checksum": {
Type: schema.TypeString,
Computed: true,
},
"size_bytes": {
Type: schema.TypeInt,
Computed: true,
},
"metadata": {
Type: schema.TypeMap,
Computed: true,
},
"updated_at": {
Type: schema.TypeString,
Computed: true,
},
"file": {
Type: schema.TypeString,
Computed: true,
},
"schema": {
Type: schema.TypeString,
Computed: true,
},
},
}
}
// dataSourceImagesImageV2Read performs the image lookup.
func dataSourceImagesImageV2Read(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
imageClient, err := config.imageV2Client(GetRegion(d))
if err != nil {
return fmt.Errorf("Error creating OpenStack image client: %s", err)
}
visibility := resourceImagesImageV2VisibilityFromString(d.Get("visibility").(string))
listOpts := images.ListOpts{
Name: d.Get("name").(string),
Visibility: visibility,
Owner: d.Get("owner").(string),
Status: images.ImageStatusActive,
SizeMin: int64(d.Get("size_min").(int)),
SizeMax: int64(d.Get("size_max").(int)),
SortKey: d.Get("sort_key").(string),
SortDir: d.Get("sort_direction").(string),
Tag: d.Get("tag").(string),
}
var allImages []images.Image
pager := images.List(imageClient, listOpts)
err = pager.EachPage(func(page pagination.Page) (bool, error) {
images, err := images.ExtractImages(page)
if err != nil {
return false, err
}
for _, i := range images {
allImages = append(allImages, i)
}
return true, nil
})
if err != nil {
return fmt.Errorf("Unable to retrieve images: %s", err)
}
var image images.Image
if len(allImages) < 1 {
return fmt.Errorf("Your query returned no results. Please change your search criteria and try again.")
}
if len(allImages) > 1 {
recent := d.Get("most_recent").(bool)
log.Printf("[DEBUG] openstack_images_image: multiple results found and `most_recent` is set to: %t", recent)
if recent {
image = mostRecentImage(allImages)
} else {
return fmt.Errorf("Your query returned more than one result. Please try a more " +
"specific search criteria, or set `most_recent` attribute to true.")
}
} else {
image = allImages[0]
}
log.Printf("[DEBUG] openstack_images_image: Single Image found: %s", image.ID)
return dataSourceImagesImageV2Attributes(d, &image)
}
// dataSourceImagesImageV2Attributes populates the fields of an Image resource.
func dataSourceImagesImageV2Attributes(d *schema.ResourceData, image *images.Image) error {
log.Printf("[DEBUG] openstack_images_image details: %#v", image)
d.SetId(image.ID)
d.Set("name", image.Name)
d.Set("tags", image.Tags)
d.Set("container_format", image.ContainerFormat)
d.Set("disk_format", image.DiskFormat)
d.Set("min_disk_gb", image.MinDiskGigabytes)
d.Set("min_ram_mb", image.MinRAMMegabytes)
d.Set("owner", image.Owner)
d.Set("protected", image.Protected)
d.Set("visibility", image.Visibility)
d.Set("checksum", image.Checksum)
d.Set("size_bytes", image.SizeBytes)
d.Set("metadata", image.Metadata)
d.Set("created_at", image.CreatedAt)
d.Set("updated_at", image.UpdatedAt)
d.Set("file", image.File)
d.Set("schema", image.Schema)
return nil
}
type imageSort []images.Image
func (a imageSort) Len() int { return len(a) }
func (a imageSort) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a imageSort) Less(i, j int) bool {
itime := a[i].UpdatedAt
jtime := a[j].UpdatedAt
return itime.Unix() < jtime.Unix()
}
// Returns the most recent Image out of a slice of images.
func mostRecentImage(images []images.Image) images.Image {
sortedImages := images
sort.Sort(imageSort(sortedImages))
return sortedImages[len(sortedImages)-1]
}
func dataSourceImagesImageV2SortDirection(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if value != "asc" && value != "desc" {
err := fmt.Errorf("%s must be either asc or desc", k)
errors = append(errors, err)
}
return
}