2017-02-07 21:33:23 +00:00
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package client
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import (
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"bytes"
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2017-11-05 12:02:03 +00:00
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"encoding/base64"
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2017-02-07 21:33:23 +00:00
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"os"
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"regexp"
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2017-11-05 12:02:03 +00:00
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"strings"
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2017-02-07 21:33:23 +00:00
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"time"
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"github.com/gorilla/websocket"
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"github.com/pkg/errors"
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)
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const (
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SELF = "self"
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COLLECTION = "collection"
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)
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var (
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2017-11-05 12:02:03 +00:00
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debug = false
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dialer = &websocket.Dialer{}
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privateFieldRegex = regexp.MustCompile("^[[:lower:]]")
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2017-02-07 21:33:23 +00:00
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)
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type ClientOpts struct {
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Url string
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AccessKey string
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SecretKey string
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Timeout time.Duration
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}
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type ApiError struct {
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StatusCode int
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Url string
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Msg string
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Status string
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Body string
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}
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func (e *ApiError) Error() string {
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return e.Msg
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}
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func IsNotFound(err error) bool {
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apiError, ok := err.(*ApiError)
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if !ok {
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return false
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}
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return apiError.StatusCode == http.StatusNotFound
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}
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func newApiError(resp *http.Response, url string) *ApiError {
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contents, err := ioutil.ReadAll(resp.Body)
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var body string
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if err != nil {
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body = "Unreadable body."
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} else {
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body = string(contents)
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}
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data := map[string]interface{}{}
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if json.Unmarshal(contents, &data) == nil {
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delete(data, "id")
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delete(data, "links")
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delete(data, "actions")
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delete(data, "type")
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delete(data, "status")
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buf := &bytes.Buffer{}
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for k, v := range data {
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if v == nil {
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continue
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}
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if buf.Len() > 0 {
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buf.WriteString(", ")
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}
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fmt.Fprintf(buf, "%s=%v", k, v)
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}
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body = buf.String()
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}
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formattedMsg := fmt.Sprintf("Bad response statusCode [%d]. Status [%s]. Body: [%s] from [%s]",
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resp.StatusCode, resp.Status, body, url)
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return &ApiError{
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Url: url,
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Msg: formattedMsg,
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StatusCode: resp.StatusCode,
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Status: resp.Status,
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Body: body,
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}
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}
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func contains(array []string, item string) bool {
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for _, check := range array {
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if check == item {
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return true
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}
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}
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return false
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}
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func appendFilters(urlString string, filters map[string]interface{}) (string, error) {
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if len(filters) == 0 {
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return urlString, nil
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}
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u, err := url.Parse(urlString)
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if err != nil {
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return "", err
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}
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q := u.Query()
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for k, v := range filters {
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if l, ok := v.([]string); ok {
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for _, v := range l {
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q.Add(k, v)
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}
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} else {
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q.Add(k, fmt.Sprintf("%v", v))
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}
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}
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u.RawQuery = q.Encode()
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return u.String(), nil
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}
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2017-11-05 12:02:03 +00:00
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func NormalizeUrl(existingUrl string) (string, error) {
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u, err := url.Parse(existingUrl)
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if err != nil {
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return "", err
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}
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if u.Path == "" || u.Path == "/" {
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u.Path = "v2-beta"
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} else if u.Path == "/v1" || strings.HasPrefix(u.Path, "/v1/") {
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u.Path = strings.Replace(u.Path, "/v1", "/v2-beta", 1)
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}
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return u.String(), nil
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}
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2017-02-07 21:33:23 +00:00
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func setupRancherBaseClient(rancherClient *RancherBaseClientImpl, opts *ClientOpts) error {
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2017-11-05 12:02:03 +00:00
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var err error
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opts.Url, err = NormalizeUrl(opts.Url)
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if err != nil {
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return err
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}
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2017-02-07 21:33:23 +00:00
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if opts.Timeout == 0 {
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opts.Timeout = time.Second * 10
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}
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client := &http.Client{Timeout: opts.Timeout}
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req, err := http.NewRequest("GET", opts.Url, nil)
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if err != nil {
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return err
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}
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req.SetBasicAuth(opts.AccessKey, opts.SecretKey)
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resp, err := client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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return newApiError(resp, opts.Url)
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}
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schemasUrls := resp.Header.Get("X-API-Schemas")
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if len(schemasUrls) == 0 {
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return errors.New("Failed to find schema at [" + opts.Url + "]")
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}
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if schemasUrls != opts.Url {
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req, err = http.NewRequest("GET", schemasUrls, nil)
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req.SetBasicAuth(opts.AccessKey, opts.SecretKey)
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if err != nil {
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return err
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}
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resp, err = client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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return newApiError(resp, opts.Url)
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}
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}
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var schemas Schemas
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bytes, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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err = json.Unmarshal(bytes, &schemas)
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if err != nil {
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return err
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}
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rancherClient.Opts = opts
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rancherClient.Schemas = &schemas
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for _, schema := range schemas.Data {
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rancherClient.Types[schema.Id] = schema
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}
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return nil
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}
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func NewListOpts() *ListOpts {
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return &ListOpts{
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Filters: map[string]interface{}{},
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}
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}
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func (rancherClient *RancherBaseClientImpl) setupRequest(req *http.Request) {
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req.SetBasicAuth(rancherClient.Opts.AccessKey, rancherClient.Opts.SecretKey)
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}
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func (rancherClient *RancherBaseClientImpl) newHttpClient() *http.Client {
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if rancherClient.Opts.Timeout == 0 {
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rancherClient.Opts.Timeout = time.Second * 10
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}
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return &http.Client{Timeout: rancherClient.Opts.Timeout}
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}
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func (rancherClient *RancherBaseClientImpl) doDelete(url string) error {
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client := rancherClient.newHttpClient()
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req, err := http.NewRequest("DELETE", url, nil)
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if err != nil {
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return err
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}
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rancherClient.setupRequest(req)
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resp, err := client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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io.Copy(ioutil.Discard, resp.Body)
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if resp.StatusCode >= 300 {
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return newApiError(resp, url)
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}
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return nil
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}
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func (rancherClient *RancherBaseClientImpl) Websocket(url string, headers map[string][]string) (*websocket.Conn, *http.Response, error) {
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2017-11-05 12:02:03 +00:00
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httpHeaders := http.Header{}
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for k, v := range httpHeaders {
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httpHeaders[k] = v
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}
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if rancherClient.Opts != nil {
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s := rancherClient.Opts.AccessKey + ":" + rancherClient.Opts.SecretKey
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httpHeaders.Add("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(s)))
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}
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return dialer.Dial(url, http.Header(httpHeaders))
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2017-02-07 21:33:23 +00:00
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}
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func (rancherClient *RancherBaseClientImpl) doGet(url string, opts *ListOpts, respObject interface{}) error {
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if opts == nil {
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opts = NewListOpts()
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}
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url, err := appendFilters(url, opts.Filters)
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if err != nil {
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return err
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}
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if debug {
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fmt.Println("GET " + url)
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}
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client := rancherClient.newHttpClient()
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return err
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}
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rancherClient.setupRequest(req)
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resp, err := client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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return newApiError(resp, url)
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}
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byteContent, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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if debug {
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fmt.Println("Response <= " + string(byteContent))
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}
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if err := json.Unmarshal(byteContent, respObject); err != nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to parse: %s", byteContent))
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}
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return nil
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}
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func (rancherClient *RancherBaseClientImpl) List(schemaType string, opts *ListOpts, respObject interface{}) error {
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return rancherClient.doList(schemaType, opts, respObject)
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}
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func (rancherClient *RancherBaseClientImpl) doList(schemaType string, opts *ListOpts, respObject interface{}) error {
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schema, ok := rancherClient.Types[schemaType]
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if !ok {
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return errors.New("Unknown schema type [" + schemaType + "]")
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}
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if !contains(schema.CollectionMethods, "GET") {
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return errors.New("Resource type [" + schemaType + "] is not listable")
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}
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collectionUrl, ok := schema.Links[COLLECTION]
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if !ok {
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return errors.New("Failed to find collection URL for [" + schemaType + "]")
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}
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return rancherClient.doGet(collectionUrl, opts, respObject)
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}
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func (rancherClient *RancherBaseClientImpl) doNext(nextUrl string, respObject interface{}) error {
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return rancherClient.doGet(nextUrl, nil, respObject)
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}
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func (rancherClient *RancherBaseClientImpl) Post(url string, createObj interface{}, respObject interface{}) error {
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return rancherClient.doModify("POST", url, createObj, respObject)
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}
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func (rancherClient *RancherBaseClientImpl) GetLink(resource Resource, link string, respObject interface{}) error {
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url := resource.Links[link]
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if url == "" {
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return fmt.Errorf("Failed to find link: %s", link)
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}
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return rancherClient.doGet(url, &ListOpts{}, respObject)
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}
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func (rancherClient *RancherBaseClientImpl) doModify(method string, url string, createObj interface{}, respObject interface{}) error {
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bodyContent, err := json.Marshal(createObj)
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if err != nil {
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return err
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}
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if debug {
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fmt.Println(method + " " + url)
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fmt.Println("Request => " + string(bodyContent))
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}
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client := rancherClient.newHttpClient()
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req, err := http.NewRequest(method, url, bytes.NewBuffer(bodyContent))
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if err != nil {
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return err
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}
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rancherClient.setupRequest(req)
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req.Header.Set("Content-Type", "application/json")
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resp, err := client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode >= 300 {
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return newApiError(resp, url)
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}
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byteContent, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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if len(byteContent) > 0 {
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if debug {
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fmt.Println("Response <= " + string(byteContent))
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}
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return json.Unmarshal(byteContent, respObject)
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|
}
|
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) Create(schemaType string, createObj interface{}, respObject interface{}) error {
|
|
|
|
return rancherClient.doCreate(schemaType, createObj, respObject)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) doCreate(schemaType string, createObj interface{}, respObject interface{}) error {
|
|
|
|
if createObj == nil {
|
|
|
|
createObj = map[string]string{}
|
|
|
|
}
|
|
|
|
if respObject == nil {
|
|
|
|
respObject = &map[string]interface{}{}
|
|
|
|
}
|
|
|
|
schema, ok := rancherClient.Types[schemaType]
|
|
|
|
if !ok {
|
|
|
|
return errors.New("Unknown schema type [" + schemaType + "]")
|
|
|
|
}
|
|
|
|
|
|
|
|
if !contains(schema.CollectionMethods, "POST") {
|
|
|
|
return errors.New("Resource type [" + schemaType + "] is not creatable")
|
|
|
|
}
|
|
|
|
|
|
|
|
var collectionUrl string
|
|
|
|
collectionUrl, ok = schema.Links[COLLECTION]
|
|
|
|
if !ok {
|
|
|
|
// return errors.New("Failed to find collection URL for [" + schemaType + "]")
|
|
|
|
// This is a hack to address https://github.com/rancher/cattle/issues/254
|
|
|
|
re := regexp.MustCompile("schemas.*")
|
|
|
|
collectionUrl = re.ReplaceAllString(schema.Links[SELF], schema.PluralName)
|
|
|
|
}
|
|
|
|
|
|
|
|
return rancherClient.doModify("POST", collectionUrl, createObj, respObject)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) Update(schemaType string, existing *Resource, updates interface{}, respObject interface{}) error {
|
|
|
|
return rancherClient.doUpdate(schemaType, existing, updates, respObject)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) doUpdate(schemaType string, existing *Resource, updates interface{}, respObject interface{}) error {
|
|
|
|
if existing == nil {
|
|
|
|
return errors.New("Existing object is nil")
|
|
|
|
}
|
|
|
|
|
|
|
|
selfUrl, ok := existing.Links[SELF]
|
|
|
|
if !ok {
|
|
|
|
return errors.New(fmt.Sprintf("Failed to find self URL of [%v]", existing))
|
|
|
|
}
|
|
|
|
|
|
|
|
if updates == nil {
|
|
|
|
updates = map[string]string{}
|
|
|
|
}
|
|
|
|
|
|
|
|
if respObject == nil {
|
|
|
|
respObject = &map[string]interface{}{}
|
|
|
|
}
|
|
|
|
|
|
|
|
schema, ok := rancherClient.Types[schemaType]
|
|
|
|
if !ok {
|
|
|
|
return errors.New("Unknown schema type [" + schemaType + "]")
|
|
|
|
}
|
|
|
|
|
|
|
|
if !contains(schema.ResourceMethods, "PUT") {
|
|
|
|
return errors.New("Resource type [" + schemaType + "] is not updatable")
|
|
|
|
}
|
|
|
|
|
|
|
|
return rancherClient.doModify("PUT", selfUrl, updates, respObject)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) ById(schemaType string, id string, respObject interface{}) error {
|
|
|
|
return rancherClient.doById(schemaType, id, respObject)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) doById(schemaType string, id string, respObject interface{}) error {
|
|
|
|
schema, ok := rancherClient.Types[schemaType]
|
|
|
|
if !ok {
|
|
|
|
return errors.New("Unknown schema type [" + schemaType + "]")
|
|
|
|
}
|
|
|
|
|
|
|
|
if !contains(schema.ResourceMethods, "GET") {
|
|
|
|
return errors.New("Resource type [" + schemaType + "] can not be looked up by ID")
|
|
|
|
}
|
|
|
|
|
|
|
|
collectionUrl, ok := schema.Links[COLLECTION]
|
|
|
|
if !ok {
|
|
|
|
return errors.New("Failed to find collection URL for [" + schemaType + "]")
|
|
|
|
}
|
|
|
|
|
|
|
|
err := rancherClient.doGet(collectionUrl+"/"+id, nil, respObject)
|
|
|
|
//TODO check for 404 and return nil, nil
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) Delete(existing *Resource) error {
|
|
|
|
if existing == nil {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
return rancherClient.doResourceDelete(existing.Type, existing)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) doResourceDelete(schemaType string, existing *Resource) error {
|
|
|
|
schema, ok := rancherClient.Types[schemaType]
|
|
|
|
if !ok {
|
|
|
|
return errors.New("Unknown schema type [" + schemaType + "]")
|
|
|
|
}
|
|
|
|
|
|
|
|
if !contains(schema.ResourceMethods, "DELETE") {
|
|
|
|
return errors.New("Resource type [" + schemaType + "] can not be deleted")
|
|
|
|
}
|
|
|
|
|
|
|
|
selfUrl, ok := existing.Links[SELF]
|
|
|
|
if !ok {
|
|
|
|
return errors.New(fmt.Sprintf("Failed to find self URL of [%v]", existing))
|
|
|
|
}
|
|
|
|
|
|
|
|
return rancherClient.doDelete(selfUrl)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) Reload(existing *Resource, output interface{}) error {
|
|
|
|
selfUrl, ok := existing.Links[SELF]
|
|
|
|
if !ok {
|
|
|
|
return errors.New(fmt.Sprintf("Failed to find self URL of [%v]", existing))
|
|
|
|
}
|
|
|
|
|
|
|
|
return rancherClient.doGet(selfUrl, NewListOpts(), output)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) Action(schemaType string, action string,
|
|
|
|
existing *Resource, inputObject, respObject interface{}) error {
|
|
|
|
return rancherClient.doAction(schemaType, action, existing, inputObject, respObject)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) doAction(schemaType string, action string,
|
|
|
|
existing *Resource, inputObject, respObject interface{}) error {
|
|
|
|
|
|
|
|
if existing == nil {
|
|
|
|
return errors.New("Existing object is nil")
|
|
|
|
}
|
|
|
|
|
|
|
|
actionUrl, ok := existing.Actions[action]
|
|
|
|
if !ok {
|
|
|
|
return errors.New(fmt.Sprintf("Action [%v] not available on [%v]", action, existing))
|
|
|
|
}
|
|
|
|
|
|
|
|
_, ok = rancherClient.Types[schemaType]
|
|
|
|
if !ok {
|
|
|
|
return errors.New("Unknown schema type [" + schemaType + "]")
|
|
|
|
}
|
|
|
|
|
|
|
|
var input io.Reader
|
|
|
|
|
|
|
|
if inputObject != nil {
|
|
|
|
bodyContent, err := json.Marshal(inputObject)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if debug {
|
|
|
|
fmt.Println("Request => " + string(bodyContent))
|
|
|
|
}
|
|
|
|
input = bytes.NewBuffer(bodyContent)
|
|
|
|
}
|
|
|
|
|
|
|
|
client := rancherClient.newHttpClient()
|
|
|
|
req, err := http.NewRequest("POST", actionUrl, input)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
rancherClient.setupRequest(req)
|
|
|
|
req.Header.Set("Content-Type", "application/json")
|
|
|
|
req.Header.Set("Content-Length", "0")
|
|
|
|
|
|
|
|
resp, err := client.Do(req)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
defer resp.Body.Close()
|
|
|
|
|
|
|
|
if resp.StatusCode >= 300 {
|
|
|
|
return newApiError(resp, actionUrl)
|
|
|
|
}
|
|
|
|
|
|
|
|
byteContent, err := ioutil.ReadAll(resp.Body)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
if debug {
|
|
|
|
fmt.Println("Response <= " + string(byteContent))
|
|
|
|
}
|
|
|
|
|
|
|
|
return json.Unmarshal(byteContent, respObject)
|
|
|
|
}
|
|
|
|
|
2017-11-05 12:02:03 +00:00
|
|
|
func (rancherClient *RancherBaseClientImpl) GetOpts() *ClientOpts {
|
|
|
|
return rancherClient.Opts
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) GetSchemas() *Schemas {
|
|
|
|
return rancherClient.Schemas
|
|
|
|
}
|
|
|
|
|
|
|
|
func (rancherClient *RancherBaseClientImpl) GetTypes() map[string]Schema {
|
|
|
|
return rancherClient.Types
|
|
|
|
}
|
|
|
|
|
2017-02-07 21:33:23 +00:00
|
|
|
func init() {
|
|
|
|
debug = os.Getenv("RANCHER_CLIENT_DEBUG") == "true"
|
|
|
|
if debug {
|
|
|
|
fmt.Println("Rancher client debug on")
|
|
|
|
}
|
|
|
|
}
|