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/snapshots.go

@@ -0,0 +1,141 @@
+package godo
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/digitalocean/godo/context"
+)
+
+const snapshotBasePath = "v2/snapshots"
+
+// SnapshotsService is an interface for interfacing with the snapshots
+// endpoints of the DigitalOcean API
+// See: https://developers.digitalocean.com/documentation/v2#snapshots
+type SnapshotsService interface {
+	List(context.Context, *ListOptions) ([]Snapshot, *Response, error)
+	ListVolume(context.Context, *ListOptions) ([]Snapshot, *Response, error)
+	ListDroplet(context.Context, *ListOptions) ([]Snapshot, *Response, error)
+	Get(context.Context, string) (*Snapshot, *Response, error)
+	Delete(context.Context, string) (*Response, error)
+}
+
+// SnapshotsServiceOp handles communication with the snapshot related methods of the
+// DigitalOcean API.
+type SnapshotsServiceOp struct {
+	client *Client
+}
+
+var _ SnapshotsService = &SnapshotsServiceOp{}
+
+// Snapshot represents a DigitalOcean Snapshot
+type Snapshot struct {
+	ID            string   `json:"id,omitempty"`
+	Name          string   `json:"name,omitempty"`
+	ResourceID    string   `json:"resource_id,omitempty"`
+	ResourceType  string   `json:"resource_type,omitempty"`
+	Regions       []string `json:"regions,omitempty"`
+	MinDiskSize   int      `json:"min_disk_size,omitempty"`
+	SizeGigaBytes float64  `json:"size_gigabytes,omitempty"`
+	Created       string   `json:"created_at,omitempty"`
+}
+
+type snapshotRoot struct {
+	Snapshot *Snapshot `json:"snapshot"`
+}
+
+type snapshotsRoot struct {
+	Snapshots []Snapshot `json:"snapshots"`
+	Links     *Links     `json:"links,omitempty"`
+}
+
+type listSnapshotOptions struct {
+	ResourceType string `url:"resource_type,omitempty"`
+}
+
+func (s Snapshot) String() string {
+	return Stringify(s)
+}
+
+// List lists all the snapshots available.
+func (s *SnapshotsServiceOp) List(ctx context.Context, opt *ListOptions) ([]Snapshot, *Response, error) {
+	return s.list(ctx, opt, nil)
+}
+
+// ListDroplet lists all the Droplet snapshots.
+func (s *SnapshotsServiceOp) ListDroplet(ctx context.Context, opt *ListOptions) ([]Snapshot, *Response, error) {
+	listOpt := listSnapshotOptions{ResourceType: "droplet"}
+	return s.list(ctx, opt, &listOpt)
+}
+
+// ListVolume lists all the volume snapshots.
+func (s *SnapshotsServiceOp) ListVolume(ctx context.Context, opt *ListOptions) ([]Snapshot, *Response, error) {
+	listOpt := listSnapshotOptions{ResourceType: "volume"}
+	return s.list(ctx, opt, &listOpt)
+}
+
+// Get retrieves an snapshot by id.
+func (s *SnapshotsServiceOp) Get(ctx context.Context, snapshotID string) (*Snapshot, *Response, error) {
+	return s.get(ctx, snapshotID)
+}
+
+// Delete an snapshot.
+func (s *SnapshotsServiceOp) Delete(ctx context.Context, snapshotID string) (*Response, error) {
+	path := fmt.Sprintf("%s/%s", snapshotBasePath, snapshotID)
+
+	req, err := s.client.NewRequest(ctx, http.MethodDelete, path, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := s.client.Do(ctx, req, nil)
+
+	return resp, err
+}
+
+// Helper method for getting an individual snapshot
+func (s *SnapshotsServiceOp) get(ctx context.Context, ID string) (*Snapshot, *Response, error) {
+	path := fmt.Sprintf("%s/%s", snapshotBasePath, ID)
+
+	req, err := s.client.NewRequest(ctx, http.MethodGet, path, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	root := new(snapshotRoot)
+	resp, err := s.client.Do(ctx, req, root)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return root.Snapshot, resp, err
+}
+
+// Helper method for listing snapshots
+func (s *SnapshotsServiceOp) list(ctx context.Context, opt *ListOptions, listOpt *listSnapshotOptions) ([]Snapshot, *Response, error) {
+	path := snapshotBasePath
+	path, err := addOptions(path, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+	path, err = addOptions(path, listOpt)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	req, err := s.client.NewRequest(ctx, http.MethodGet, path, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	root := new(snapshotsRoot)
+	resp, err := s.client.Do(ctx, req, root)
+	if err != nil {
+		return nil, resp, err
+	}
+	if l := root.Links; l != nil {
+		resp.Links = l
+	}
+
+	return root.Snapshots, resp, err
+}