57 lines
971 B
Go
57 lines
971 B
Go
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package httpjson
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import (
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"encoding/json"
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"io"
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"net/http"
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"sync"
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"time"
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)
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var client *http.Client
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var once sync.Once
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func getClient() *http.Client {
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once.Do(func() {
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tr := &http.Transport{
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MaxIdleConns: 10,
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IdleConnTimeout: 15 * time.Second,
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ResponseHeaderTimeout: 15 * time.Second,
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DisableKeepAlives: false,
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}
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httpClient := &http.Client{
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Transport: tr,
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// do not follow redirects
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CheckRedirect: func(req *http.Request, via []*http.Request) error {
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return http.ErrUseLastResponse
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},
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}
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client = httpClient
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})
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return client
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}
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func Get[T any](url string) (T, error) {
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resp, err := getClient().Get(url)
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if err != nil {
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return *new(T), err
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}
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defer func() {
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io.Copy(io.Discard, resp.Body)
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resp.Body.Close()
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}()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return *new(T), err
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}
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d := new(T)
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err = json.Unmarshal(body, &d)
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if err != nil {
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return *new(T), err
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}
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return *d, nil
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}
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