Add StorageOS volume plugin

vendor/github.com/storageos/go-api/controller.go

@@ -0,0 +1,111 @@
+package storageos
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/url"
+
+	"github.com/storageos/go-api/types"
+)
+
+var (
+
+	// ControllerAPIPrefix is a partial path to the HTTP endpoint.
+	ControllerAPIPrefix = "controllers"
+
+	// ErrNoSuchController is the error returned when the controller does not exist.
+	ErrNoSuchController = errors.New("no such controller")
+
+	// ErrControllerInUse is the error returned when the controller requested to be removed is still in use.
+	ErrControllerInUse = errors.New("controller in use and cannot be removed")
+)
+
+// ControllerList returns the list of available controllers.
+func (c *Client) ControllerList(opts types.ListOptions) ([]*types.Controller, error) {
+	listOpts := doOptions{
+		fieldSelector: opts.FieldSelector,
+		labelSelector: opts.LabelSelector,
+		namespace:     opts.Namespace,
+		context:       opts.Context,
+	}
+
+	if opts.LabelSelector != "" {
+		query := url.Values{}
+		query.Add("labelSelector", opts.LabelSelector)
+		listOpts.values = query
+	}
+
+	resp, err := c.do("GET", ControllerAPIPrefix, listOpts)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	var controllers []*types.Controller
+	if err := json.NewDecoder(resp.Body).Decode(&controllers); err != nil {
+		return nil, err
+	}
+	return controllers, nil
+}
+
+// Controller returns a controller by its reference.
+func (c *Client) Controller(ref string) (*types.Controller, error) {
+
+	resp, err := c.do("GET", ControllerAPIPrefix+"/"+ref, doOptions{})
+	if err != nil {
+		if e, ok := err.(*Error); ok && e.Status == http.StatusNotFound {
+			return nil, ErrNoSuchController
+		}
+		return nil, err
+	}
+	defer resp.Body.Close()
+	var controller types.Controller
+	if err := json.NewDecoder(resp.Body).Decode(&controller); err != nil {
+		return nil, err
+	}
+	return &controller, nil
+}
+
+// ControllerUpdate updates a controller on the server.
+func (c *Client) ControllerUpdate(opts types.ControllerUpdateOptions) (*types.Controller, error) {
+	ref := opts.Name
+	if IsUUID(opts.ID) {
+		ref = opts.ID
+	}
+	resp, err := c.do("PUT", ControllerAPIPrefix+"/"+ref, doOptions{
+		data:    opts,
+		context: opts.Context,
+	})
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	var controller types.Controller
+	if err := json.NewDecoder(resp.Body).Decode(&controller); err != nil {
+		return nil, err
+	}
+	return &controller, nil
+}
+
+// ControllerDelete removes a controller by its reference.
+func (c *Client) ControllerDelete(opts types.DeleteOptions) error {
+	deleteOpts := doOptions{
+		namespace: opts.Namespace,
+		force:     opts.Force,
+		context:   opts.Context,
+	}
+	resp, err := c.do("DELETE", ControllerAPIPrefix+"/"+opts.Name, deleteOpts)
+	if err != nil {
+		if e, ok := err.(*Error); ok {
+			if e.Status == http.StatusNotFound {
+				return ErrNoSuchController
+			}
+			if e.Status == http.StatusConflict {
+				return ErrControllerInUse
+			}
+		}
+		return err
+	}
+	defer resp.Body.Close()
+	return nil
+}