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resource_server_tags.go
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/
resource_server_tags.go
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package ddcloud
import (
"fmt"
"log"
"github.com/DimensionDataResearch/go-dd-cloud-compute/compute"
"github.com/hashicorp/terraform/helper/schema"
)
const (
resourceKeyServerTag = "tag"
resourceKeyServerTagName = "name"
resourceKeyServerTagValue = "value"
)
func schemaServerTag() *schema.Schema {
return &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Default: nil,
Description: "A set of tags to apply to the server",
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
resourceKeyServerTagName: &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "The tag name",
},
resourceKeyServerTagValue: &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "The tag value",
},
},
},
Set: hashServerTag,
}
}
// Apply configured tags to a server.
func applyServerTags(data *schema.ResourceData, apiClient *compute.Client, providerSettings ProviderSettings) error {
var (
response *compute.APIResponseV2
err error
)
serverID := data.Id()
log.Printf("Configuring tags for server '%s'...", serverID)
propertyHelper := propertyHelper(data)
configuredTags := propertyHelper.GetTags(resourceKeyServerTag)
serverTags, err := getServerTags(apiClient, serverID)
if err != nil {
return err
}
// Capture any tags that are no-longer needed.
unusedTags := &schema.Set{
F: schema.HashString,
}
for _, tag := range serverTags {
unusedTags.Add(tag.Name)
}
for _, tag := range configuredTags {
unusedTags.Remove(tag.Name)
}
if len(configuredTags) > 0 {
log.Printf("Applying %d tags to server '%s'...", len(configuredTags), serverID)
response, err = apiClient.ApplyAssetTags(serverID, compute.AssetTypeServer, configuredTags...)
if err != nil {
return err
}
if response.ResponseCode != compute.ResponseCodeOK {
return response.ToError("Failed to apply %d tags to server '%s' (response code '%s'): %s", len(configuredTags), serverID, response.ResponseCode, response.Message)
}
} else {
log.Printf("No tags need to be added to server '%s'.", serverID)
}
// Trim unused tags (currently-configured tags will overwrite any existing values).
if unusedTags.Len() > 0 {
unusedTagNames := make([]string, unusedTags.Len())
for index, unusedTagName := range unusedTags.List() {
unusedTagNames[index] = unusedTagName.(string)
}
log.Printf("Removing %d unused tags from server '%s'...", len(unusedTagNames), serverID)
response, err = apiClient.RemoveAssetTags(serverID, compute.AssetTypeServer, unusedTagNames...)
if err != nil {
return err
}
if response.ResponseCode != compute.ResponseCodeOK {
return response.ToError("Failed to remove %d tags from server '%s' (response code '%s'): %s", len(configuredTags), serverID, response.ResponseCode, response.Message)
}
}
return nil
}
// Read tags from a server and update resource data accordingly.
func readServerTags(data *schema.ResourceData, apiClient *compute.Client) error {
propertyHelper := propertyHelper(data)
serverID := data.Id()
log.Printf("Reading tags for server '%s'...", serverID)
serverTags, err := getServerTags(apiClient, serverID)
if err != nil {
return err
}
log.Printf("Read %d tags for server '%s'.", len(serverTags), serverID)
propertyHelper.SetTags(resourceKeyServerTag, serverTags)
return nil
}
func hashServerTagName(item interface{}) int {
tagData := item.(map[string]interface{})
return schema.HashString(
tagData[resourceKeyServerTagName].(string),
)
}
func hashServerTag(item interface{}) int {
tagData := item.(map[string]interface{})
return schema.HashString(fmt.Sprintf(
"%s=%s",
tagData[resourceKeyServerTagName].(string),
tagData[resourceKeyServerTagValue].(string),
))
}
func getServerTags(apiClient *compute.Client, serverID string) (serverTags []compute.Tag, err error) {
page := compute.DefaultPaging()
page.PageSize = 20
var tagDetails *compute.TagDetails
for {
tagDetails, err = apiClient.GetAssetTags(serverID, compute.AssetTypeServer, page)
if err != nil {
apiError, ok := err.(*compute.APIError)
if ok && apiError.Response.GetResponseCode() == compute.ResponseCodeUnexpectedError {
// This is due to a bug in the CloudControl API (asking for a non-existent page results in UNKNOWN_ERROR).
err = nil
break
}
return
}
if tagDetails.IsEmpty() {
break
}
for _, tagDetail := range tagDetails.Items {
serverTags = append(serverTags,
tagDetail.ToTag(),
)
}
page.Next()
}
return
}