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forwarder.go
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/
forwarder.go
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package webhooks
import (
"bytes"
"context"
"net/http"
"github.com/MainfluxLabs/mainflux/pkg/errors"
"github.com/MainfluxLabs/mainflux/pkg/messaging"
)
type Forwarder interface {
// Forward method is used to forward the received message to a certain url
Forward(ctx context.Context, message messaging.Message, whs []Webhook) error
}
var _ Forwarder = (*forwarder)(nil)
type forwarder struct {
httpClient *http.Client
}
func NewForwarder(webhooks WebhookRepository) Forwarder {
return &forwarder{
httpClient: &http.Client{},
}
}
func (fw *forwarder) Forward(_ context.Context, msg messaging.Message, whs []Webhook) error {
for _, wh := range whs {
if err := fw.sendRequest(wh.Url, msg); err != nil {
return err
}
}
return nil
}
func (fw *forwarder) sendRequest(url string, msg messaging.Message) error {
req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(msg.Payload))
if err != nil {
return err
}
req.Header.Set(contentType, ctJSON)
resp, err := fw.httpClient.Do(req)
if err != nil {
return errors.Wrap(ErrSendRequest, err)
}
defer resp.Body.Close()
return nil
}