61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package common
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import (
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"io/ioutil"
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"net/http"
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"strings"
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"time"
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"github.com/aws/aws-sdk-go/aws/credentials"
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v4 "github.com/aws/aws-sdk-go/aws/signer/v4"
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)
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// Transport is used to sing the user for each request
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type Transport struct {
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transport http.RoundTripper
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signer *v4.Signer
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region string
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}
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func (t *Transport) sign(req *http.Request, body []byte) error {
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reader := strings.NewReader(string(body))
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timestamp := time.Now()
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_, err := t.signer.Sign(req, reader, "osc", t.region, timestamp)
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return err
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}
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// RoundTrip is implemented according with the interface RoundTrip to sing for each request
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func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
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//Get the body
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getBody := req.GetBody
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copyBody, err := getBody()
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if err != nil {
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return nil, err
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}
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body, err := ioutil.ReadAll(copyBody)
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if err != nil {
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return nil, err
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}
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if err := t.sign(req, body); err != nil {
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return nil, err
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}
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resp, err := t.transport.RoundTrip(req)
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if err != nil {
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return resp, err
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}
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return resp, nil
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}
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// NewTransport returns the transport signing with the given credentials
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func NewTransport(accessKey, accessSecret, region string, t http.RoundTripper) *Transport {
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s := &v4.Signer{
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Credentials: credentials.NewStaticCredentials(accessKey,
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accessSecret, ""),
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}
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return &Transport{t, s, region}
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}
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