Switch to official Vultr API library (#529)

* vultr: Switched to official API library (closes #528)

* vultr: Renamed vultr.VultrApi to vultr.Provider

* vendor: Updated govultr

vendor/github.com/vultr/govultr/snapshot.go

@@ -0,0 +1,168 @@
+package govultr
+
+import (
+	"context"
+	"net/http"
+	"net/url"
+)
+
+// SnapshotService is the interface to interact with Snapshot endpoints on the Vultr API
+// Link: https://www.vultr.com/api/#snapshot
+type SnapshotService interface {
+	Create(ctx context.Context, InstanceID, description string) (*Snapshot, error)
+	CreateFromURL(ctx context.Context, snapshotURL string) (*Snapshot, error)
+	Delete(ctx context.Context, snapshotID string) error
+	List(ctx context.Context) ([]Snapshot, error)
+	Get(ctx context.Context, snapshotID string) (*Snapshot, error)
+}
+
+// SnapshotServiceHandler handles interaction with the snapshot methods for the Vultr API
+type SnapshotServiceHandler struct {
+	Client *Client
+}
+
+// Snapshot represents a Vultr snapshot
+type Snapshot struct {
+	SnapshotID  string `json:"SNAPSHOTID"`
+	DateCreated string `json:"date_created"`
+	Description string `json:"description"`
+	Size        string `json:"size"`
+	Status      string `json:"status"`
+	OsID        string `json:"OSID"`
+	AppID       string `json:"APPID"`
+}
+
+// Snapshots represent a collection of snapshots
+type Snapshots []Snapshot
+
+// Create makes a snapshot of a provided server
+func (s *SnapshotServiceHandler) Create(ctx context.Context, InstanceID, description string) (*Snapshot, error) {
+
+	uri := "/v1/snapshot/create"
+
+	values := url.Values{
+		"SUBID":       {InstanceID},
+		"description": {description},
+	}
+
+	req, err := s.Client.NewRequest(ctx, http.MethodPost, uri, values)
+
+	if err != nil {
+		return nil, err
+	}
+
+	snapshot := new(Snapshot)
+	err = s.Client.DoWithContext(ctx, req, snapshot)
+
+	if err != nil {
+		return nil, err
+	}
+
+	snapshot.Description = description
+	return snapshot, nil
+}
+
+// CreateFromURL will create a snapshot based on an image iso from a URL you provide
+func (s *SnapshotServiceHandler) CreateFromURL(ctx context.Context, snapshotURL string) (*Snapshot, error) {
+	uri := "/v1/snapshot/create_from_url"
+
+	values := url.Values{
+		"url": {snapshotURL},
+	}
+
+	req, err := s.Client.NewRequest(ctx, http.MethodPost, uri, values)
+
+	if err != nil {
+		return nil, err
+	}
+
+	snapshot := new(Snapshot)
+	err = s.Client.DoWithContext(ctx, req, snapshot)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return snapshot, nil
+}
+
+// Delete a snapshot based on snapshotID
+func (s *SnapshotServiceHandler) Delete(ctx context.Context, snapshotID string) error {
+	uri := "/v1/snapshot/destroy"
+
+	values := url.Values{
+		"SNAPSHOTID": {snapshotID},
+	}
+
+	req, err := s.Client.NewRequest(ctx, http.MethodPost, uri, values)
+
+	if err != nil {
+		return err
+	}
+
+	err = s.Client.DoWithContext(ctx, req, nil)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// List of snapshots details
+func (s *SnapshotServiceHandler) List(ctx context.Context) ([]Snapshot, error) {
+	uri := "/v1/snapshot/list"
+
+	req, err := s.Client.NewRequest(ctx, http.MethodGet, uri, nil)
+
+	if err != nil {
+		return nil, err
+	}
+
+	snapshotMap := make(map[string]Snapshot)
+	err = s.Client.DoWithContext(ctx, req, &snapshotMap)
+
+	if err != nil {
+		return nil, err
+	}
+
+	var snapshots []Snapshot
+
+	for _, s := range snapshotMap {
+		snapshots = append(snapshots, s)
+	}
+
+	return snapshots, nil
+}
+
+// Get individual details of a snapshot based on snapshotID
+func (s *SnapshotServiceHandler) Get(ctx context.Context, snapshotID string) (*Snapshot, error) {
+	uri := "/v1/snapshot/list"
+
+	req, err := s.Client.NewRequest(ctx, http.MethodGet, uri, nil)
+
+	if err != nil {
+		return nil, err
+	}
+
+	if snapshotID != "" {
+		q := req.URL.Query()
+		q.Add("SNAPSHOTID", snapshotID)
+		req.URL.RawQuery = q.Encode()
+	}
+
+	snapshotMap := make(map[string]Snapshot)
+	err = s.Client.DoWithContext(ctx, req, &snapshotMap)
+
+	if err != nil {
+		return nil, err
+	}
+
+	snapshot := new(Snapshot)
+
+	for _, s := range snapshotMap {
+		snapshot = &s
+	}
+
+	return snapshot, nil
+}