forked from gophercloud/gophercloud
/
results.go
301 lines (254 loc) · 7.83 KB
/
results.go
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package containers
import (
"encoding/json"
"fmt"
"strings"
"time"
"github.com/yyf330/gophercloud"
"github.com/yyf330/gophercloud/pagination"
)
// Container represents a container resource.
type Container struct {
// The total number of bytes stored in the container.
Bytes int64 `json:"bytes"`
// The total number of objects stored in the container.
Count int64 `json:"count"`
// The name of the container.
Name string `json:"name"`
}
// ContainerPage is the page returned by a pager when traversing over a
// collection of containers.
type ContainerPage struct {
pagination.MarkerPageBase
}
//IsEmpty returns true if a ListResult contains no container names.
func (r ContainerPage) IsEmpty() (bool, error) {
names, err := ExtractNames(r)
return len(names) == 0, err
}
// LastMarker returns the last container name in a ListResult.
func (r ContainerPage) LastMarker() (string, error) {
names, err := ExtractNames(r)
if err != nil {
return "", err
}
if len(names) == 0 {
return "", nil
}
return names[len(names)-1], nil
}
// ExtractInfo is a function that takes a ListResult and returns the
// containers' information.
func ExtractInfo(r pagination.Page) ([]Container, error) {
var s []Container
err := (r.(ContainerPage)).ExtractInto(&s)
return s, err
}
// ExtractNames is a function that takes a ListResult and returns the
// containers' names.
func ExtractNames(page pagination.Page) ([]string, error) {
casted := page.(ContainerPage)
ct := casted.Header.Get("Content-Type")
switch {
case strings.HasPrefix(ct, "application/json"):
parsed, err := ExtractInfo(page)
if err != nil {
return nil, err
}
names := make([]string, 0, len(parsed))
for _, container := range parsed {
names = append(names, container.Name)
}
return names, nil
case strings.HasPrefix(ct, "text/plain"):
names := make([]string, 0, 50)
body := string(page.(ContainerPage).Body.([]uint8))
for _, name := range strings.Split(body, "\n") {
if len(name) > 0 {
names = append(names, name)
}
}
return names, nil
default:
return nil, fmt.Errorf("Cannot extract names from response with content-type: [%s]", ct)
}
}
// GetHeader represents the headers returned in the response from a Get request.
type GetHeader struct {
AcceptRanges string `json:"Accept-Ranges"`
BytesUsed int64 `json:"X-Container-Bytes-Used,string"`
ContentLength int64 `json:"Content-Length,string"`
ContentType string `json:"Content-Type"`
Date time.Time `json:"-"`
ObjectCount int64 `json:"X-Container-Object-Count,string"`
Read []string `json:"-"`
TransID string `json:"X-Trans-Id"`
VersionsLocation string `json:"X-Versions-Location"`
HistoryLocation string `json:"X-History-Location"`
Write []string `json:"-"`
StoragePolicy string `json:"X-Storage-Policy"`
TempURLKey string `json:"X-Container-Meta-Temp-URL-Key"`
TempURLKey2 string `json:"X-Container-Meta-Temp-URL-Key-2"`
}
func (r *GetHeader) UnmarshalJSON(b []byte) error {
type tmp GetHeader
var s struct {
tmp
Write string `json:"X-Container-Write"`
Read string `json:"X-Container-Read"`
Date gophercloud.JSONRFC1123 `json:"Date"`
}
err := json.Unmarshal(b, &s)
if err != nil {
return err
}
*r = GetHeader(s.tmp)
r.Read = strings.Split(s.Read, ",")
r.Write = strings.Split(s.Write, ",")
r.Date = time.Time(s.Date)
return err
}
// GetResult represents the result of a get operation.
type GetResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Get.
func (r GetResult) Extract() (*GetHeader, error) {
var s GetHeader
err := r.ExtractInto(&s)
return &s, err
}
// ExtractMetadata is a function that takes a GetResult (of type *http.Response)
// and returns the custom metadata associated with the container.
func (r GetResult) ExtractMetadata() (map[string]string, error) {
if r.Err != nil {
return nil, r.Err
}
metadata := make(map[string]string)
for k, v := range r.Header {
if strings.HasPrefix(k, "X-Container-Meta-") {
key := strings.TrimPrefix(k, "X-Container-Meta-")
metadata[key] = v[0]
}
}
return metadata, nil
}
// CreateHeader represents the headers returned in the response from a Create
// request.
type CreateHeader struct {
ContentLength int64 `json:"Content-Length,string"`
ContentType string `json:"Content-Type"`
Date time.Time `json:"-"`
TransID string `json:"X-Trans-Id"`
}
func (r *CreateHeader) UnmarshalJSON(b []byte) error {
type tmp CreateHeader
var s struct {
tmp
Date gophercloud.JSONRFC1123 `json:"Date"`
}
err := json.Unmarshal(b, &s)
if err != nil {
return err
}
*r = CreateHeader(s.tmp)
r.Date = time.Time(s.Date)
return err
}
// CreateResult represents the result of a create operation. To extract the
// the headers from the HTTP response, call its Extract method.
type CreateResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Create.
// To extract the headers from the HTTP response, call its Extract method.
func (r CreateResult) Extract() (*CreateHeader, error) {
var s CreateHeader
err := r.ExtractInto(&s)
return &s, err
}
// UpdateHeader represents the headers returned in the response from a Update
// request.
type UpdateHeader struct {
ContentLength int64 `json:"Content-Length,string"`
ContentType string `json:"Content-Type"`
Date time.Time `json:"-"`
TransID string `json:"X-Trans-Id"`
}
func (r *UpdateHeader) UnmarshalJSON(b []byte) error {
type tmp UpdateHeader
var s struct {
tmp
Date gophercloud.JSONRFC1123 `json:"Date"`
}
err := json.Unmarshal(b, &s)
if err != nil {
return err
}
*r = UpdateHeader(s.tmp)
r.Date = time.Time(s.Date)
return err
}
// UpdateResult represents the result of an update operation. To extract the
// the headers from the HTTP response, call its Extract method.
type UpdateResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Update.
func (r UpdateResult) Extract() (*UpdateHeader, error) {
var s UpdateHeader
err := r.ExtractInto(&s)
return &s, err
}
// DeleteHeader represents the headers returned in the response from a Delete
// request.
type DeleteHeader struct {
ContentLength int64 `json:"Content-Length,string"`
ContentType string `json:"Content-Type"`
Date time.Time `json:"-"`
TransID string `json:"X-Trans-Id"`
}
func (r *DeleteHeader) UnmarshalJSON(b []byte) error {
type tmp DeleteHeader
var s struct {
tmp
Date gophercloud.JSONRFC1123 `json:"Date"`
}
err := json.Unmarshal(b, &s)
if err != nil {
return err
}
*r = DeleteHeader(s.tmp)
r.Date = time.Time(s.Date)
return err
}
// DeleteResult represents the result of a delete operation. To extract the
// headers from the HTTP response, call its Extract method.
type DeleteResult struct {
gophercloud.HeaderResult
}
// Extract will return a struct of headers returned from a call to Delete.
func (r DeleteResult) Extract() (*DeleteHeader, error) {
var s DeleteHeader
err := r.ExtractInto(&s)
return &s, err
}
type BulkDeleteResponse struct {
ResponseStatus string `json:"Response Status"`
ResponseBody string `json:"Response Body"`
Errors [][]string `json:"Errors"`
NumberDeleted int `json:"Number Deleted"`
NumberNotFound int `json:"Number Not Found"`
}
// BulkDeleteResult represents the result of a bulk delete operation. To extract
// the response object from the HTTP response, call its Extract method.
type BulkDeleteResult struct {
gophercloud.Result
}
// Extract will return a BulkDeleteResponse struct returned from a BulkDelete
// call.
func (r BulkDeleteResult) Extract() (*BulkDeleteResponse, error) {
var s BulkDeleteResponse
err := r.ExtractInto(&s)
return &s, err
}