135 lines
3 KiB
Go
135 lines
3 KiB
Go
package src
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import (
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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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"strings"
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"github.com/pkg/errors"
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)
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//Client struct
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type Client struct {
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token string
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basePath string
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HTTPClient *http.Client
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}
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//NewClient creates new client
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func NewClient(token string, client ...*http.Client) *Client {
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return newClientInternal(
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token,
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"https://cloud-api.yandex.com/v1/disk", //also "https://cloud-api.yandex.net/v1/disk" "https://cloud-api.yandex.ru/v1/disk"
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client...)
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}
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func newClientInternal(token string, basePath string, client ...*http.Client) *Client {
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c := &Client{
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token: token,
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basePath: basePath,
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}
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if len(client) != 0 {
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c.HTTPClient = client[0]
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} else {
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c.HTTPClient = http.DefaultClient
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}
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return c
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}
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//ErrorHandler type
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type ErrorHandler func(*http.Response) error
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var defaultErrorHandler ErrorHandler = func(resp *http.Response) error {
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if resp.StatusCode/100 == 5 {
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return errors.New("server error")
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}
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if resp.StatusCode/100 == 4 {
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var response DiskClientError
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contents, _ := ioutil.ReadAll(resp.Body)
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err := json.Unmarshal(contents, &response)
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if err != nil {
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return err
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}
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return response
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}
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if resp.StatusCode/100 == 3 {
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return errors.New("redirect error")
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}
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return nil
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}
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func (HTTPRequest *HTTPRequest) run(client *Client) ([]byte, error) {
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var err error
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values := make(url.Values)
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if HTTPRequest.Parameters != nil {
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for k, v := range HTTPRequest.Parameters {
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values.Set(k, fmt.Sprintf("%v", v))
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}
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}
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var req *http.Request
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if HTTPRequest.Method == "POST" {
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// TODO json serialize
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req, err = http.NewRequest(
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"POST",
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client.basePath+HTTPRequest.Path,
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strings.NewReader(values.Encode()))
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if err != nil {
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return nil, err
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}
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// TODO
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// req.Header.Set("Content-Type", "application/json")
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} else {
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req, err = http.NewRequest(
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HTTPRequest.Method,
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client.basePath+HTTPRequest.Path+"?"+values.Encode(),
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nil)
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if err != nil {
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return nil, err
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}
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}
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for headerName := range HTTPRequest.Headers {
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var headerValues = HTTPRequest.Headers[headerName]
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for _, headerValue := range headerValues {
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req.Header.Set(headerName, headerValue)
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}
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}
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return runRequest(client, req)
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}
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func runRequest(client *Client, req *http.Request) ([]byte, error) {
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return runRequestWithErrorHandler(client, req, defaultErrorHandler)
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}
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func runRequestWithErrorHandler(client *Client, req *http.Request, errorHandler ErrorHandler) (out []byte, err error) {
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resp, err := client.HTTPClient.Do(req)
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if err != nil {
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return nil, err
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}
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defer CheckClose(resp.Body, &err)
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return checkResponseForErrorsWithErrorHandler(resp, errorHandler)
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}
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func checkResponseForErrorsWithErrorHandler(resp *http.Response, errorHandler ErrorHandler) ([]byte, error) {
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if resp.StatusCode/100 > 2 {
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return nil, errorHandler(resp)
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}
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return ioutil.ReadAll(resp.Body)
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}
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// CheckClose is a utility function used to check the return from
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// Close in a defer statement.
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func CheckClose(c io.Closer, err *error) {
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cerr := c.Close()
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if *err == nil {
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*err = cerr
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}
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}
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