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package cbreaker
import (
"bytes"
"fmt"
"io"
"net/http"
"net/url"
"strings"
"github.com/vulcand/oxy/v2/utils"
)
// SideEffect a side effect.
type SideEffect interface {
Exec() error
}
// Webhook Web hook.
type Webhook struct {
URL string
Method string
Headers http.Header
Form url.Values
Body []byte
}
// WebhookSideEffect a web hook side effect.
type WebhookSideEffect struct {
w Webhook
log utils.Logger
}
// NewWebhookSideEffectsWithLogger creates a new WebhookSideEffect.
func NewWebhookSideEffectsWithLogger(w Webhook, l utils.Logger) (*WebhookSideEffect, error) {
if w.Method == "" {
return nil, fmt.Errorf("supply method")
}
_, err := url.Parse(w.URL)
if err != nil {
return nil, err
}
return &WebhookSideEffect{w: w, log: l}, nil
}
// NewWebhookSideEffect creates a new WebhookSideEffect.
func NewWebhookSideEffect(w Webhook) (*WebhookSideEffect, error) {
return NewWebhookSideEffectsWithLogger(w, &utils.NoopLogger{})
}
func (w *WebhookSideEffect) getBody() io.Reader {
if len(w.w.Form) != 0 {
return strings.NewReader(w.w.Form.Encode())
}
if len(w.w.Body) != 0 {
return bytes.NewBuffer(w.w.Body)
}
return nil
}
// Exec execute the side effect.
func (w *WebhookSideEffect) Exec() error {
r, err := http.NewRequest(w.w.Method, w.w.URL, w.getBody())
if err != nil {
return err
}
if len(w.w.Headers) != 0 {
utils.CopyHeaders(r.Header, w.w.Headers)
}
if len(w.w.Form) != 0 {
r.Header.Set("Content-Type", "application/x-www-form-urlencoded")
}
re, err := http.DefaultClient.Do(r)
if err != nil {
return err
}
if re.Body != nil {
defer func() { _ = re.Body.Close() }()
}
body, err := io.ReadAll(re.Body)
if err != nil {
return err
}
w.log.Debug("%v got response: (%s): %s", w, re.Status, string(body))
return nil
}
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