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resource_compute_project_metadata_item.go
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/
resource_compute_project_metadata_item.go
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package google
import (
"fmt"
"log"
"github.com/hashicorp/terraform/helper/schema"
"google.golang.org/api/compute/v1"
)
func resourceComputeProjectMetadataItem() *schema.Resource {
return &schema.Resource{
Create: resourceComputeProjectMetadataItemCreate,
Read: resourceComputeProjectMetadataItemRead,
Update: resourceComputeProjectMetadataItemUpdate,
Delete: resourceComputeProjectMetadataItemDelete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"key": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"value": {
Type: schema.TypeString,
Required: true,
},
"project": {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
},
}
}
func resourceComputeProjectMetadataItemCreate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
projectID, err := getProject(d, config)
if err != nil {
return err
}
key := d.Get("key").(string)
val := d.Get("value").(string)
err = updateComputeCommonInstanceMetadata(config, projectID, key, &val)
if err != nil {
return err
}
d.SetId(key)
return nil
}
func resourceComputeProjectMetadataItemRead(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
projectID, err := getProject(d, config)
if err != nil {
return err
}
log.Printf("[DEBUG] Loading project metadata: %s", projectID)
project, err := config.clientCompute.Projects.Get(projectID).Do()
if err != nil {
return fmt.Errorf("Error loading project '%s': %s", projectID, err)
}
md := flattenMetadata(project.CommonInstanceMetadata)
val, ok := md[d.Id()]
if !ok {
// Resource no longer exists
d.SetId("")
return nil
}
d.Set("project", projectID)
d.Set("key", d.Id())
d.Set("value", val)
return nil
}
func resourceComputeProjectMetadataItemUpdate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
projectID, err := getProject(d, config)
if err != nil {
return err
}
if d.HasChange("value") {
key := d.Get("key").(string)
_, n := d.GetChange("value")
new := n.(string)
err = updateComputeCommonInstanceMetadata(config, projectID, key, &new)
if err != nil {
return err
}
}
return nil
}
func resourceComputeProjectMetadataItemDelete(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
projectID, err := getProject(d, config)
if err != nil {
return err
}
key := d.Get("key").(string)
err = updateComputeCommonInstanceMetadata(config, projectID, key, nil)
if err != nil {
return err
}
d.SetId("")
return nil
}
func updateComputeCommonInstanceMetadata(config *Config, projectID string, key string, afterVal *string) error {
updateMD := func() error {
log.Printf("[DEBUG] Loading project metadata: %s", projectID)
project, err := config.clientCompute.Projects.Get(projectID).Do()
if err != nil {
return fmt.Errorf("Error loading project '%s': %s", projectID, err)
}
md := flattenMetadata(project.CommonInstanceMetadata)
val, ok := md[key]
if !ok {
if afterVal == nil {
// Asked to set no value and we didn't find one - we're done
return nil
}
} else {
if afterVal != nil && *afterVal == val {
// Asked to set a value and it's already set - we're done.
return nil
}
}
if afterVal == nil {
delete(md, key)
} else {
md[key] = *afterVal
}
// Attempt to write the new value now
op, err := config.clientCompute.Projects.SetCommonInstanceMetadata(
projectID,
&compute.Metadata{
Fingerprint: project.CommonInstanceMetadata.Fingerprint,
Items: expandComputeMetadata(md),
},
).Do()
if err != nil {
return err
}
log.Printf("[DEBUG] SetCommonInstanceMetadata: %d (%s)", op.Id, op.SelfLink)
return computeOperationWait(config.clientCompute, op, project.Name, "SetCommonInstanceMetadata")
}
return MetadataRetryWrapper(updateMD)
}