Digitalocean provider (#171)

* Implement Digitalocean provider
* Vendor digitalocean lib
* Enable SRV for Digitalocean and fix the tests
* Test cname etc. records pointing to the same domain

vendor/github.com/digitalocean/godo/image_actions.go

@@ -0,0 +1,103 @@
+package godo
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/digitalocean/godo/context"
+)
+
+// ImageActionsService is an interface for interfacing with the image actions
+// endpoints of the DigitalOcean API
+// See: https://developers.digitalocean.com/documentation/v2#image-actions
+type ImageActionsService interface {
+	Get(context.Context, int, int) (*Action, *Response, error)
+	Transfer(context.Context, int, *ActionRequest) (*Action, *Response, error)
+	Convert(context.Context, int) (*Action, *Response, error)
+}
+
+// ImageActionsServiceOp handles communition with the image action related methods of the
+// DigitalOcean API.
+type ImageActionsServiceOp struct {
+	client *Client
+}
+
+var _ ImageActionsService = &ImageActionsServiceOp{}
+
+// Transfer an image
+func (i *ImageActionsServiceOp) Transfer(ctx context.Context, imageID int, transferRequest *ActionRequest) (*Action, *Response, error) {
+	if imageID < 1 {
+		return nil, nil, NewArgError("imageID", "cannot be less than 1")
+	}
+
+	if transferRequest == nil {
+		return nil, nil, NewArgError("transferRequest", "cannot be nil")
+	}
+
+	path := fmt.Sprintf("v2/images/%d/actions", imageID)
+
+	req, err := i.client.NewRequest(ctx, http.MethodPost, path, transferRequest)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	root := new(actionRoot)
+	resp, err := i.client.Do(ctx, req, root)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return root.Event, resp, err
+}
+
+// Convert an image to a snapshot
+func (i *ImageActionsServiceOp) Convert(ctx context.Context, imageID int) (*Action, *Response, error) {
+	if imageID < 1 {
+		return nil, nil, NewArgError("imageID", "cannont be less than 1")
+	}
+
+	path := fmt.Sprintf("v2/images/%d/actions", imageID)
+
+	convertRequest := &ActionRequest{
+		"type": "convert",
+	}
+
+	req, err := i.client.NewRequest(ctx, http.MethodPost, path, convertRequest)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	root := new(actionRoot)
+	resp, err := i.client.Do(ctx, req, root)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return root.Event, resp, err
+}
+
+// Get an action for a particular image by id.
+func (i *ImageActionsServiceOp) Get(ctx context.Context, imageID, actionID int) (*Action, *Response, error) {
+	if imageID < 1 {
+		return nil, nil, NewArgError("imageID", "cannot be less than 1")
+	}
+
+	if actionID < 1 {
+		return nil, nil, NewArgError("actionID", "cannot be less than 1")
+	}
+
+	path := fmt.Sprintf("v2/images/%d/actions/%d", imageID, actionID)
+
+	req, err := i.client.NewRequest(ctx, http.MethodGet, path, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	root := new(actionRoot)
+	resp, err := i.client.Do(ctx, req, root)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return root.Event, resp, err
+}