terraform/builtin/providers/alicloud/data_source_alicloud_images.go

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2017-01-19 15:08:56 +01:00
package alicloud
import (
"fmt"
"log"
"regexp"
"sort"
"github.com/denverdino/aliyungo/ecs"
"github.com/hashicorp/terraform/helper/schema"
"time"
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)
func dataSourceAlicloudImages() *schema.Resource {
return &schema.Resource{
Read: dataSourceAlicloudImagesRead,
Schema: map[string]*schema.Schema{
"name_regex": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ValidateFunc: validateNameRegex,
},
"most_recent": {
Type: schema.TypeBool,
Optional: true,
Default: false,
ForceNew: true,
},
"owners": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ValidateFunc: validateImageOwners,
},
// Computed values.
"images": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"id": {
Type: schema.TypeString,
Computed: true,
},
"image_id": {
Type: schema.TypeString,
Computed: true,
},
"architecture": {
Type: schema.TypeString,
Computed: true,
},
"creation_time": {
Type: schema.TypeString,
Computed: true,
},
"description": {
Type: schema.TypeString,
Computed: true,
},
"image_owner_alias": {
Type: schema.TypeString,
Computed: true,
},
"os_type": {
Type: schema.TypeString,
Computed: true,
},
"os_name": {
Type: schema.TypeString,
Computed: true,
},
"name": {
Type: schema.TypeString,
Computed: true,
},
"platform": {
Type: schema.TypeString,
Computed: true,
},
"status": {
Type: schema.TypeString,
Computed: true,
},
"state": {
Type: schema.TypeString,
Computed: true,
},
"size": {
Type: schema.TypeInt,
Computed: true,
},
// Complex computed values
"disk_device_mappings": {
Type: schema.TypeList,
Computed: true,
//Set: imageDiskDeviceMappingHash,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"device": {
Type: schema.TypeString,
Computed: true,
},
"size": {
Type: schema.TypeString,
Computed: true,
},
"snapshot_id": {
Type: schema.TypeString,
Computed: true,
},
},
},
},
"product_code": {
Type: schema.TypeString,
Computed: true,
},
"is_self_shared": {
Type: schema.TypeString,
Computed: true,
},
"is_subscribed": {
Type: schema.TypeBool,
Computed: true,
},
"is_copied": {
Type: schema.TypeBool,
Computed: true,
},
"is_support_io_optimized": {
Type: schema.TypeBool,
Computed: true,
},
"image_version": {
Type: schema.TypeString,
Computed: true,
},
"progress": {
Type: schema.TypeString,
Computed: true,
},
"usage": {
Type: schema.TypeString,
Computed: true,
},
"tags": tagsSchema(),
},
},
},
},
}
}
// dataSourceAlicloudImagesDescriptionRead performs the Alicloud Image lookup.
func dataSourceAlicloudImagesRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AliyunClient).ecsconn
nameRegex, nameRegexOk := d.GetOk("name_regex")
owners, ownersOk := d.GetOk("owners")
mostRecent, mostRecentOk := d.GetOk("most_recent")
if nameRegexOk == false && ownersOk == false && mostRecentOk == false {
return fmt.Errorf("One of name_regex, owners or most_recent must be assigned")
}
params := &ecs.DescribeImagesArgs{
RegionId: getRegion(d, meta),
}
if ownersOk {
params.ImageOwnerAlias = ecs.ImageOwnerAlias(owners.(string))
}
resp, _, err := conn.DescribeImages(params)
if err != nil {
return err
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}
var filteredImages []ecs.ImageType
if nameRegexOk {
r := regexp.MustCompile(nameRegex.(string))
for _, image := range resp {
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// Check for a very rare case where the response would include no
// image name. No name means nothing to attempt a match against,
// therefore we are skipping such image.
if image.ImageName == "" {
log.Printf("[WARN] Unable to find Image name to match against "+
"for image ID %q, nothing to do.",
image.ImageId)
continue
}
if r.MatchString(image.ImageName) {
filteredImages = append(filteredImages, image)
}
}
} else {
filteredImages = resp[:]
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}
var images []ecs.ImageType
if len(filteredImages) < 1 {
return fmt.Errorf("Your query returned no results. Please change your search criteria and try again.")
}
log.Printf("[DEBUG] alicloud_image - multiple results found and `most_recent` is set to: %t", mostRecent.(bool))
if len(filteredImages) > 1 && mostRecent.(bool) {
// Query returned single result.
images = append(images, mostRecentImage(filteredImages))
} else {
images = filteredImages
}
log.Printf("[DEBUG] alicloud_image - Images found: %#v", images)
return imagesDescriptionAttributes(d, images, meta)
}
// populate the numerous fields that the image description returns.
func imagesDescriptionAttributes(d *schema.ResourceData, images []ecs.ImageType, meta interface{}) error {
var ids []string
var s []map[string]interface{}
for _, image := range images {
mapping := map[string]interface{}{
"id": image.ImageId,
"architecture": image.Architecture,
"creation_time": image.CreationTime.String(),
"description": image.Description,
"image_id": image.ImageId,
"image_owner_alias": image.ImageOwnerAlias,
"os_name": image.OSName,
"os_type": image.OSType,
"name": image.ImageName,
"platform": image.Platform,
"status": image.Status,
"state": image.Status,
"size": image.Size,
"is_self_shared": image.IsSelfShared,
"is_subscribed": image.IsSubscribed,
"is_copied": image.IsCopied,
"is_support_io_optimized": image.IsSupportIoOptimized,
"image_version": image.ImageVersion,
"progress": image.Progress,
"usage": image.Usage,
"product_code": image.ProductCode,
// Complex types get their own functions
"disk_device_mappings": imageDiskDeviceMappings(image.DiskDeviceMappings.DiskDeviceMapping),
"tags": imageTagsMappings(d, image.ImageId, meta),
}
log.Printf("[DEBUG] alicloud_image - adding image mapping: %v", mapping)
ids = append(ids, image.ImageId)
s = append(s, mapping)
}
d.SetId(dataResourceIdHash(ids))
if err := d.Set("images", s); err != nil {
return err
}
return nil
}
//Find most recent image
type imageSort []ecs.ImageType
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, _ := time.Parse(time.RFC3339, a[i].CreationTime.String())
jtime, _ := time.Parse(time.RFC3339, a[j].CreationTime.String())
return itime.Unix() < jtime.Unix()
}
// Returns the most recent Image out of a slice of images.
func mostRecentImage(images []ecs.ImageType) ecs.ImageType {
sortedImages := images
sort.Sort(imageSort(sortedImages))
return sortedImages[len(sortedImages)-1]
}
// Returns a set of disk device mappings.
func imageDiskDeviceMappings(m []ecs.DiskDeviceMapping) []map[string]interface{} {
var s []map[string]interface{}
for _, v := range m {
mapping := map[string]interface{}{
"device": v.Device,
"size": v.Size,
"snapshot_id": v.SnapshotId,
}
log.Printf("[DEBUG] alicloud_image - adding disk device mapping: %v", mapping)
s = append(s, mapping)
}
return s
}
//Returns a mapping of image tags
func imageTagsMappings(d *schema.ResourceData, imageId string, meta interface{}) map[string]string {
client := meta.(*AliyunClient)
conn := client.ecsconn
tags, _, err := conn.DescribeTags(&ecs.DescribeTagsArgs{
RegionId: getRegion(d, meta),
ResourceType: ecs.TagResourceImage,
ResourceId: imageId,
})
if err != nil {
log.Printf("[ERROR] DescribeTags for image got error: %#v", err)
return nil
}
log.Printf("[DEBUG] DescribeTags for image : %v", tags)
return tagsToMap(tags)
}