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data_source_tc_image.go
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/
data_source_tc_image.go
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package tencentcloud
import (
"encoding/json"
"errors"
"fmt"
"log"
"regexp"
"sort"
"time"
"strings"
"github.com/hashicorp/terraform/helper/schema"
)
const (
tencentCloudApiDescribeImagesParaLimitMaxFiltersNumber = 10
tencentCloudApiDescribeImagesParaLimitMaxFilterValuessNumber = 5
)
type imageSorter []struct {
ImageId string `json:"ImageId"`
OsName string `json:"OsName"`
ImageName string `json:"ImageName"`
CreatedTime string `json:"CreatedTime"`
}
func (a imageSorter) Len() int {
return len(a)
}
func (a imageSorter) Swap(i, j int) {
a[i], a[j] = a[j], a[i]
}
func (a imageSorter) Less(i, j int) bool {
itime, _ := time.Parse(time.RFC3339, a[i].CreatedTime)
jtime, _ := time.Parse(time.RFC3339, a[j].CreatedTime)
return itime.Unix() < jtime.Unix()
}
// Sort images by creation date, in descending order.
func sortImages(images imageSorter) imageSorter {
sortedImages := images
sort.Sort(sort.Reverse(imageSorter(sortedImages)))
return sortedImages
}
func dataSourceTencentCloudSourceImages() *schema.Resource {
return &schema.Resource{
Read: dataSourceTencentCloudImagesRead,
Schema: map[string]*schema.Schema{
"image_name_regex": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ValidateFunc: validateNameRegex,
},
"os_name": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ValidateFunc: validateNotEmpty,
},
//"most_recent": {
// Type: schema.TypeBool,
// Optional: true,
// Default: false,
// ForceNew: true,
//},
"filter": dataSourceTencentCloudFiltersSchema(),
// Computed values.
"image_id": {
Type: schema.TypeString,
Computed: true,
},
},
}
}
func dataSourceTencentCloudImagesRead(d *schema.ResourceData, meta interface{}) error {
client := meta.(*TencentCloudClient).commonConn
filters, filtersOk := d.GetOk("filter")
imageNameRegex, nameRegexOk := d.GetOk("image_name_regex")
osName, osNameOk := d.GetOk("os_name")
if !nameRegexOk && !filtersOk && !osNameOk {
return fmt.Errorf("One of image_name_regex, os_name, filter must be assigned")
}
imageNameRegexStr := imageNameRegex.(string)
osNameStr := osName.(string)
params := map[string]string{
"Version": "2017-03-12",
"Action": "DescribeImages",
"Limit": "100",
}
if filtersOk {
filterList := filters.(*schema.Set)
err := buildFiltersParam(
params,
filterList,
tencentCloudApiDescribeImagesParaLimitMaxFiltersNumber,
tencentCloudApiDescribeImagesParaLimitMaxFilterValuessNumber,
)
if err != nil {
return err
}
}
log.Printf("[DEBUG] tencentcloud_image - param: %v", params)
response, err := client.SendRequest("image", params)
if err != nil {
return err
}
var jsonresp struct {
Response struct {
Error struct {
Code string `json:"Code"`
Message string `json:"Message"`
}
ImageSet []struct {
ImageId string `json:"ImageId"`
OsName string `json:"OsName"`
ImageName string `json:"ImageName"`
CreatedTime string `json:"CreatedTime"`
}
}
}
err = json.Unmarshal([]byte(response), &jsonresp)
if err != nil {
return err
}
if jsonresp.Response.Error.Code != "" {
return fmt.Errorf(
"tencentcloud_image got error, code:%v, message:%v",
jsonresp.Response.Error.Code,
jsonresp.Response.Error.Message,
)
}
var (
resultImageId string
regImageName = regexp.MustCompile(imageNameRegexStr)
)
imageList := jsonresp.Response.ImageSet
if len(imageList) == 0 {
return errors.New("No image found")
}
// Dont expose most_recent as a outlet for the sake of eaiser usage, let's sort by recent by default
//recent := d.Get("most_recent").(bool)
recent := true
if recent && len(imageList) > 1 {
imageList = mostRecentImages(imageList)
}
for _, image := range imageList {
imageId := image.ImageId
imageName := image.ImageName
osName := image.OsName
log.Printf(
"[DEBUG] tencentcloud_image - Images found imageId: %v, osName:% v, imageName: %v, imageNameRegexStr: %v",
imageId,
osName,
imageName,
imageNameRegexStr,
)
// osName full match is in the highest priority
if osNameOk {
if strings.Contains(strings.ToLower(osName), strings.ToLower(osNameStr)) {
resultImageId = imageId
break
} else {
continue
}
}
if nameRegexOk {
if regImageName.MatchString(imageName) {
resultImageId = imageId
break
} else {
continue
}
}
if filtersOk {
resultImageId = imageId
break
}
}
if nameRegexOk && resultImageId == "" {
err = errors.New("osName not matched")
return err
}
id := dataResourceIdHash(resultImageId)
d.SetId(id)
log.Printf("[DEBUG] tencentcloud_image - imageId: %#v", resultImageId)
if err := d.Set("image_id", resultImageId); err != nil {
return err
}
return nil
}
// Returns the most recent image out of a slice of images.
func mostRecentImages(images imageSorter) imageSorter {
return sortImages(images)
}