Function instanceMetadataGet

cmd/incusd/instance_metadata.go:74–145

swagger:operation GET /1.0/instances/{name}/metadata instances instance_metadata_get Get the instance image metadata Gets the image metadata for the instance. --- produces: - application/json parameters: - in: path name: name description: Instance name type: string

(d *Daemon, r *http.Request)

//	  "500":
//	    $ref: "#/responses/InternalServerError"
func instanceMetadataGet(d *Daemon, r *http.Request) response.Response {
	s := d.State()

	projectName := request.ProjectParam(r)
	name, err := pathVar(r, "name")
	if err != nil {
		return response.SmartError(err)
	}

	if internalInstance.IsSnapshot(name) {
		return response.BadRequest(errors.New("Invalid instance name"))
	}

	// Handle requests targeted to a container on a different node
	resp, err := forwardedResponseIfInstanceIsRemote(s, r, projectName, name)
	if err != nil {
		return response.SmartError(err)
	}

	if resp != nil {
		return resp
	}

	// Load the container
	c, err := instance.LoadByProjectAndName(s, projectName, name)
	if err != nil {
		return response.SmartError(err)
	}

	// Start the storage if needed
	pool, err := storagePools.LoadByInstance(s, c)
	if err != nil {
		return response.SmartError(err)
	}

	_, err = storagePools.InstanceMount(pool, c, nil)
	if err != nil {
		return response.SmartError(err)
	}

	defer logger.WarnOnError(func() error { return storagePools.InstanceUnmount(pool, c, nil) }, "Failed to unmount instance")

	// If missing, just return empty result
	metadataPath := filepath.Join(c.Path(), "metadata.yaml")
	if !util.PathExists(metadataPath) {
		return response.SyncResponse(true, api.ImageMetadata{})
	}

	// Read the metadata
	metadataFile, err := os.Open(metadataPath)
	if err != nil {
		return response.InternalError(err)
	}

	defer logger.WarnOnError(metadataFile.Close, "Failed to close metadata file")

	data, err := io.ReadAll(metadataFile)
	if err != nil {