153 lines
3.5 KiB
Go
153 lines
3.5 KiB
Go
package http
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"log"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/zitadel/oidc/v3/pkg/oidc"
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)
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var DefaultHTTPClient = &http.Client{
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Timeout: 30 * time.Second,
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}
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type Decoder interface {
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Decode(dst any, src map[string][]string) error
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}
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type Encoder interface {
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Encode(src any, dst map[string][]string) error
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}
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type FormAuthorization func(url.Values)
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type RequestAuthorization func(*http.Request)
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func AuthorizeBasic(user, password string) RequestAuthorization {
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return func(req *http.Request) {
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req.SetBasicAuth(url.QueryEscape(user), url.QueryEscape(password))
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}
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}
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func FormRequest(ctx context.Context, endpoint string, request any, encoder Encoder, authFn any) (*http.Request, error) {
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form := url.Values{}
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if err := encoder.Encode(request, form); err != nil {
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return nil, err
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}
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if fn, ok := authFn.(FormAuthorization); ok {
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fn(form)
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}
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body := strings.NewReader(form.Encode())
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, body)
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if err != nil {
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return nil, err
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}
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if fn, ok := authFn.(RequestAuthorization); ok {
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fn(req)
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}
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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return req, nil
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}
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func HttpRequest(client *http.Client, req *http.Request, response any) error {
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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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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("unable to read response body: %v", err)
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}
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if resp.StatusCode != http.StatusOK {
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var oidcErr oidc.Error
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err = json.Unmarshal(body, &oidcErr)
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if err != nil || oidcErr.ErrorType == "" {
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return fmt.Errorf("http status not ok: %s %s", resp.Status, body)
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}
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return &oidcErr
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}
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err = json.Unmarshal(body, response)
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if err != nil {
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return fmt.Errorf("failed to unmarshal response: %v %s", err, body)
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}
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return nil
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}
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func URLEncodeParams(resp any, encoder Encoder) (url.Values, error) {
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values := make(map[string][]string)
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err := encoder.Encode(resp, values)
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if err != nil {
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return nil, err
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}
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return values, nil
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}
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func StartServer(ctx context.Context, port string) {
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c := make(chan error)
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StartServer2(ctx, port, WithStartServerErrorChannel(&c))
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err := <-c
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if err != nil {
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log.Fatal(err)
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}
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}
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type startServerOpts struct {
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errorChannel *chan error
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timeout time.Duration
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}
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func WithStartServerErrorChannel(errorChannel *chan error) func(*startServerOpts) {
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return func(opts *startServerOpts) {
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opts.errorChannel = errorChannel
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}
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}
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func WithTimeout(timeout time.Duration) func(*startServerOpts) {
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return func(opts *startServerOpts) {
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opts.timeout = timeout
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}
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}
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var ErrStartServerListenAndServe = errors.New("server.ListenAndServe():")
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var ErrStartServerShutdown = errors.New("server.Shutdown():")
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func StartServer2(ctx context.Context, port string, opts ...func(*startServerOpts)) {
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options := &startServerOpts{
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timeout: 5 * time.Second,
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}
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for _, opt := range opts {
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opt(options)
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}
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server := &http.Server{Addr: port}
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go func() {
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if err := server.ListenAndServe(); err != http.ErrServerClosed {
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if options.errorChannel != nil {
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*options.errorChannel <- fmt.Errorf("%w %v", ErrStartServerListenAndServe, err)
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}
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}
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}()
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go func() {
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<-ctx.Done()
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ctxShutdown, cancelShutdown := context.WithTimeout(context.Background(), options.timeout)
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defer cancelShutdown()
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err := server.Shutdown(ctxShutdown)
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if err != nil {
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if options.errorChannel != nil {
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*options.errorChannel <- fmt.Errorf("%w %v", ErrStartServerShutdown, err)
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}
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}
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}()
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}
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