/
volume.go
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/
volume.go
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package hcloud
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"net/url"
"strconv"
"time"
"github.com/hetznercloud/hcloud-go/v2/hcloud/schema"
)
// Volume represents a volume in the Hetzner Cloud.
type Volume struct {
ID int64
Name string
Status VolumeStatus
Server *Server
Location *Location
Size int
Format *string
Protection VolumeProtection
Labels map[string]string
LinuxDevice string
Created time.Time
}
const (
VolumeFormatExt4 = "ext4"
VolumeFormatXFS = "xfs"
)
// VolumeProtection represents the protection level of a volume.
type VolumeProtection struct {
Delete bool
}
// VolumeClient is a client for the volume API.
type VolumeClient struct {
client *Client
Action *ResourceActionClient
}
// VolumeStatus specifies a volume's status.
type VolumeStatus string
const (
// VolumeStatusCreating is the status when a volume is being created.
VolumeStatusCreating VolumeStatus = "creating"
// VolumeStatusAvailable is the status when a volume is available.
VolumeStatusAvailable VolumeStatus = "available"
)
// GetByID retrieves a volume by its ID. If the volume does not exist, nil is returned.
func (c *VolumeClient) GetByID(ctx context.Context, id int64) (*Volume, *Response, error) {
req, err := c.client.NewRequest(ctx, "GET", fmt.Sprintf("/volumes/%d", id), nil)
if err != nil {
return nil, nil, err
}
var body schema.VolumeGetResponse
resp, err := c.client.Do(req, &body)
if err != nil {
if IsError(err, ErrorCodeNotFound) {
return nil, resp, nil
}
return nil, nil, err
}
return VolumeFromSchema(body.Volume), resp, nil
}
// GetByName retrieves a volume by its name. If the volume does not exist, nil is returned.
func (c *VolumeClient) GetByName(ctx context.Context, name string) (*Volume, *Response, error) {
if name == "" {
return nil, nil, nil
}
volumes, response, err := c.List(ctx, VolumeListOpts{Name: name})
if len(volumes) == 0 {
return nil, response, err
}
return volumes[0], response, err
}
// Get retrieves a volume by its ID if the input can be parsed as an integer, otherwise it
// retrieves a volume by its name. If the volume does not exist, nil is returned.
func (c *VolumeClient) Get(ctx context.Context, idOrName string) (*Volume, *Response, error) {
if id, err := strconv.ParseInt(idOrName, 10, 64); err == nil {
return c.GetByID(ctx, id)
}
return c.GetByName(ctx, idOrName)
}
// VolumeListOpts specifies options for listing volumes.
type VolumeListOpts struct {
ListOpts
Name string
Status []VolumeStatus
Sort []string
}
func (l VolumeListOpts) values() url.Values {
vals := l.ListOpts.Values()
if l.Name != "" {
vals.Add("name", l.Name)
}
for _, status := range l.Status {
vals.Add("status", string(status))
}
for _, sort := range l.Sort {
vals.Add("sort", sort)
}
return vals
}
// List returns a list of volumes for a specific page.
//
// Please note that filters specified in opts are not taken into account
// when their value corresponds to their zero value or when they are empty.
func (c *VolumeClient) List(ctx context.Context, opts VolumeListOpts) ([]*Volume, *Response, error) {
path := "/volumes?" + opts.values().Encode()
req, err := c.client.NewRequest(ctx, "GET", path, nil)
if err != nil {
return nil, nil, err
}
var body schema.VolumeListResponse
resp, err := c.client.Do(req, &body)
if err != nil {
return nil, nil, err
}
volumes := make([]*Volume, 0, len(body.Volumes))
for _, s := range body.Volumes {
volumes = append(volumes, VolumeFromSchema(s))
}
return volumes, resp, nil
}
// All returns all volumes.
func (c *VolumeClient) All(ctx context.Context) ([]*Volume, error) {
return c.AllWithOpts(ctx, VolumeListOpts{ListOpts: ListOpts{PerPage: 50}})
}
// AllWithOpts returns all volumes with the given options.
func (c *VolumeClient) AllWithOpts(ctx context.Context, opts VolumeListOpts) ([]*Volume, error) {
allVolumes := []*Volume{}
err := c.client.all(func(page int) (*Response, error) {
opts.Page = page
volumes, resp, err := c.List(ctx, opts)
if err != nil {
return resp, err
}
allVolumes = append(allVolumes, volumes...)
return resp, nil
})
if err != nil {
return nil, err
}
return allVolumes, nil
}
// VolumeCreateOpts specifies parameters for creating a volume.
type VolumeCreateOpts struct {
Name string
Size int
Server *Server
Location *Location
Labels map[string]string
Automount *bool
Format *string
}
// Validate checks if options are valid.
func (o VolumeCreateOpts) Validate() error {
if o.Name == "" {
return errors.New("missing name")
}
if o.Size <= 0 {
return errors.New("size must be greater than 0")
}
if o.Server == nil && o.Location == nil {
return errors.New("one of server or location must be provided")
}
if o.Server != nil && o.Location != nil {
return errors.New("only one of server or location must be provided")
}
if o.Server == nil && (o.Automount != nil && *o.Automount) {
return errors.New("server must be provided when automount is true")
}
return nil
}
// VolumeCreateResult is the result of creating a volume.
type VolumeCreateResult struct {
Volume *Volume
Action *Action
NextActions []*Action
}
// Create creates a new volume with the given options.
func (c *VolumeClient) Create(ctx context.Context, opts VolumeCreateOpts) (VolumeCreateResult, *Response, error) {
if err := opts.Validate(); err != nil {
return VolumeCreateResult{}, nil, err
}
reqBody := schema.VolumeCreateRequest{
Name: opts.Name,
Size: opts.Size,
Automount: opts.Automount,
Format: opts.Format,
}
if opts.Labels != nil {
reqBody.Labels = &opts.Labels
}
if opts.Server != nil {
reqBody.Server = Ptr(opts.Server.ID)
}
if opts.Location != nil {
if opts.Location.ID != 0 {
reqBody.Location = opts.Location.ID
} else {
reqBody.Location = opts.Location.Name
}
}
reqBodyData, err := json.Marshal(reqBody)
if err != nil {
return VolumeCreateResult{}, nil, err
}
req, err := c.client.NewRequest(ctx, "POST", "/volumes", bytes.NewReader(reqBodyData))
if err != nil {
return VolumeCreateResult{}, nil, err
}
var respBody schema.VolumeCreateResponse
resp, err := c.client.Do(req, &respBody)
if err != nil {
return VolumeCreateResult{}, resp, err
}
var action *Action
if respBody.Action != nil {
action = ActionFromSchema(*respBody.Action)
}
return VolumeCreateResult{
Volume: VolumeFromSchema(respBody.Volume),
Action: action,
NextActions: ActionsFromSchema(respBody.NextActions),
}, resp, nil
}
// Delete deletes a volume.
func (c *VolumeClient) Delete(ctx context.Context, volume *Volume) (*Response, error) {
req, err := c.client.NewRequest(ctx, "DELETE", fmt.Sprintf("/volumes/%d", volume.ID), nil)
if err != nil {
return nil, err
}
return c.client.Do(req, nil)
}
// VolumeUpdateOpts specifies options for updating a volume.
type VolumeUpdateOpts struct {
Name string
Labels map[string]string
}
// Update updates a volume.
func (c *VolumeClient) Update(ctx context.Context, volume *Volume, opts VolumeUpdateOpts) (*Volume, *Response, error) {
reqBody := schema.VolumeUpdateRequest{
Name: opts.Name,
}
if opts.Labels != nil {
reqBody.Labels = &opts.Labels
}
reqBodyData, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, err
}
path := fmt.Sprintf("/volumes/%d", volume.ID)
req, err := c.client.NewRequest(ctx, "PUT", path, bytes.NewReader(reqBodyData))
if err != nil {
return nil, nil, err
}
respBody := schema.VolumeUpdateResponse{}
resp, err := c.client.Do(req, &respBody)
if err != nil {
return nil, resp, err
}
return VolumeFromSchema(respBody.Volume), resp, nil
}
// VolumeAttachOpts specifies options for attaching a volume.
type VolumeAttachOpts struct {
Server *Server
Automount *bool
}
// AttachWithOpts attaches a volume to a server.
func (c *VolumeClient) AttachWithOpts(ctx context.Context, volume *Volume, opts VolumeAttachOpts) (*Action, *Response, error) {
reqBody := schema.VolumeActionAttachVolumeRequest{
Server: opts.Server.ID,
Automount: opts.Automount,
}
reqBodyData, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, err
}
path := fmt.Sprintf("/volumes/%d/actions/attach", volume.ID)
req, err := c.client.NewRequest(ctx, "POST", path, bytes.NewReader(reqBodyData))
if err != nil {
return nil, nil, err
}
var respBody schema.VolumeActionAttachVolumeResponse
resp, err := c.client.Do(req, &respBody)
if err != nil {
return nil, resp, err
}
return ActionFromSchema(respBody.Action), resp, nil
}
// Attach attaches a volume to a server.
func (c *VolumeClient) Attach(ctx context.Context, volume *Volume, server *Server) (*Action, *Response, error) {
return c.AttachWithOpts(ctx, volume, VolumeAttachOpts{Server: server})
}
// Detach detaches a volume from a server.
func (c *VolumeClient) Detach(ctx context.Context, volume *Volume) (*Action, *Response, error) {
var reqBody schema.VolumeActionDetachVolumeRequest
reqBodyData, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, err
}
path := fmt.Sprintf("/volumes/%d/actions/detach", volume.ID)
req, err := c.client.NewRequest(ctx, "POST", path, bytes.NewReader(reqBodyData))
if err != nil {
return nil, nil, err
}
var respBody schema.VolumeActionDetachVolumeResponse
resp, err := c.client.Do(req, &respBody)
if err != nil {
return nil, resp, err
}
return ActionFromSchema(respBody.Action), resp, nil
}
// VolumeChangeProtectionOpts specifies options for changing the resource protection level of a volume.
type VolumeChangeProtectionOpts struct {
Delete *bool
}
// ChangeProtection changes the resource protection level of a volume.
func (c *VolumeClient) ChangeProtection(ctx context.Context, volume *Volume, opts VolumeChangeProtectionOpts) (*Action, *Response, error) {
reqBody := schema.VolumeActionChangeProtectionRequest{
Delete: opts.Delete,
}
reqBodyData, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, err
}
path := fmt.Sprintf("/volumes/%d/actions/change_protection", volume.ID)
req, err := c.client.NewRequest(ctx, "POST", path, bytes.NewReader(reqBodyData))
if err != nil {
return nil, nil, err
}
respBody := schema.VolumeActionChangeProtectionResponse{}
resp, err := c.client.Do(req, &respBody)
if err != nil {
return nil, resp, err
}
return ActionFromSchema(respBody.Action), resp, err
}
// Resize changes the size of a volume.
func (c *VolumeClient) Resize(ctx context.Context, volume *Volume, size int) (*Action, *Response, error) {
reqBody := schema.VolumeActionResizeVolumeRequest{
Size: size,
}
reqBodyData, err := json.Marshal(reqBody)
if err != nil {
return nil, nil, err
}
path := fmt.Sprintf("/volumes/%d/actions/resize", volume.ID)
req, err := c.client.NewRequest(ctx, "POST", path, bytes.NewReader(reqBodyData))
if err != nil {
return nil, nil, err
}
respBody := schema.VolumeActionResizeVolumeResponse{}
resp, err := c.client.Do(req, &respBody)
if err != nil {
return nil, resp, err
}
return ActionFromSchema(respBody.Action), resp, err
}