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receive "x-ms-retry-after-ms" field on error 429 #28

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receive "x-ms-retry-after-ms" field on error 429 #28

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15 changes: 14 additions & 1 deletion client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@ import (
"bytes"
"io"
"net/http"
"strconv"
"time"
)

type Clienter interface {
Expand Down Expand Up @@ -146,7 +148,18 @@ func (c *Client) do(r *Request, validator statusCodeValidatorFunc, data interfac
return nil, err
}
if !validator(resp.StatusCode) {
err = &RequestError{}
if resp.StatusCode == 429 {
retry := resp.Header.Get("x-ms-retry-after-ms")
val, _ := strconv.Atoi(retry)
if val == 0 {
val = 100
}
err = &RequestError429{
Retry: time.Duration(val) * time.Millisecond,
}
} else {
err = &RequestError{}
}
readJson(resp.Body, &err)
return nil, err
}
Expand Down
12 changes: 12 additions & 0 deletions request.go
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,18 @@ func (e RequestError) Error() string {
return fmt.Sprintf("%v, %v", e.Code, e.Message)
}

// Request Error
type RequestError429 struct {
Code string `json:"code"`
Message string `json:"message"`
Retry time.Duration
}

// Implement Error function
func (e RequestError429) Error() string {
return fmt.Sprintf("%v, retry after %v", e.Code, e.Retry)
}

// Resource Request
type Request struct {
rId, rType string
Expand Down