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package aws
import (
"fmt"
"io"
"time"
)
var sleepDelay = func(delay time.Duration) {
time.Sleep(delay)
}
type lener interface {
Len() int
}
func BuildContentLength(r *Request) {
if r.HTTPRequest.Header.Get("Content-Length") != "" {
return
}
var length int64
switch body := r.Body.(type) {
case nil:
length = 0
case lener:
length = int64(body.Len())
case io.Seeker:
cur, _ := body.Seek(0, 1)
end, _ := body.Seek(0, 2)
body.Seek(cur, 0) // make sure to seek back to original location
length = end - cur
default:
panic("Cannot get length of body, must provide `ContentLength`")
}
r.HTTPRequest.ContentLength = length
r.HTTPRequest.Header.Set("Content-Length", fmt.Sprintf("%d", length))
}
func UserAgentHandler(r *Request) {
r.HTTPRequest.Header.Set("User-Agent", SDKName+"/"+SDKVersion)
}
func SendHandler(r *Request) {
r.HTTPResponse, r.Error = r.Service.Config.HTTPClient.Do(r.HTTPRequest)
}
func ValidateResponseHandler(r *Request) {
if r.HTTPResponse.StatusCode == 0 || r.HTTPResponse.StatusCode >= 400 {
err := APIError{
StatusCode: r.HTTPResponse.StatusCode,
RetryCount: r.RetryCount,
}
r.Error = err
err.Retryable = r.Service.ShouldRetry(r)
err.RetryDelay = r.Service.RetryRules(r)
r.Error = err
}
}
func AfterRetryHandler(r *Request) {
delay := 0 * time.Second
willRetry := false
if err := Error(r.Error); err != nil {
delay = err.RetryDelay
if err.Retryable && r.RetryCount < r.Service.MaxRetries() {
r.RetryCount++
willRetry = true
}
}
if willRetry {
r.Error = nil
sleepDelay(delay)
}
}
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