128 lines
3 KiB
Go
128 lines
3 KiB
Go
package request
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import (
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"encoding/json"
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"encoding/xml"
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"net/http"
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"time"
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"github.com/evcc-io/evcc/util"
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"github.com/evcc-io/evcc/util/transport"
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)
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// Timeout is the default request timeout used by the Helper
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var Timeout = 10 * time.Second
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// Helper provides utility primitives
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type Helper struct {
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*http.Client
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}
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// NewClient creates http client with default transport
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func NewClient(log *util.Logger) *http.Client {
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return &http.Client{
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Timeout: Timeout,
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Transport: NewTripper(log, transport.Default()),
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}
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}
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// NewHelper creates http helper for simplified PUT GET logic
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func NewHelper(log *util.Logger) *Helper {
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return &Helper{
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Client: NewClient(log),
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}
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}
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// DoBody executes HTTP request and returns the response body
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func (r *Helper) DoBody(req *http.Request) ([]byte, error) {
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resp, err := r.Do(req)
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if err != nil {
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return nil, err
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}
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return ReadBody(resp)
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}
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// GetBody executes HTTP GET request and returns the response body
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func (r *Helper) GetBody(url string) ([]byte, error) {
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return nil, err
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}
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return r.DoBody(req)
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}
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// decodeJSON reads HTTP response and decodes JSON body if error is nil
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func decodeJSON(resp *http.Response, res any) error {
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if err := ResponseError(resp); err != nil {
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_ = json.NewDecoder(resp.Body).Decode(&res)
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return err
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}
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return json.NewDecoder(resp.Body).Decode(&res)
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}
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// decodeXML reads HTTP response and decodes XML body if error is nil
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func decodeXML(resp *http.Response, res any) error {
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if err := ResponseError(resp); err != nil {
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_ = xml.NewDecoder(resp.Body).Decode(&res)
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return err
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}
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return xml.NewDecoder(resp.Body).Decode(&res)
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}
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// DoJSON executes HTTP request and decodes JSON response.
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// It returns a StatusError on response codes other than HTTP 2xx.
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func (r *Helper) DoJSON(req *http.Request, res any) error {
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resp, err := r.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 == http.StatusNoContent {
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return nil
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}
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return decodeJSON(resp, &res)
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}
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// GetJSON executes HTTP GET request and decodes JSON response.
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// It returns a StatusError on response codes other than HTTP 2xx.
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func (r *Helper) GetJSON(url string, res any) error {
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req, err := New(http.MethodGet, url, nil, AcceptJSON)
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if err != nil {
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return err
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}
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return r.DoJSON(req, &res)
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}
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// DoXML executes HTTP request and decodes XML response.
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// It returns a StatusError on response codes other than HTTP 2xx.
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func (r *Helper) DoXML(req *http.Request, res any) error {
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resp, err := r.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 == http.StatusNoContent {
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return nil
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}
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return decodeXML(resp, res)
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}
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// GetXML executes HTTP GET request and decodes XML response.
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// It returns a StatusError on response codes other than HTTP 2xx.
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func (r *Helper) GetXML(url string, res any) error {
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req, err := New(http.MethodGet, url, nil, AcceptXML)
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if err != nil {
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return err
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}
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return r.DoXML(req, res)
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}
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