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Various small cleanups #139

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merged 3 commits into from
Oct 18, 2021
Merged

Various small cleanups #139

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23b650d
Use a constant
ash2k Sep 6, 2021
2467a3e
Stop timer to free up resources when its no longer needed
ash2k Sep 6, 2021
dbd0367
Move logging-related code under the if condition
ash2k Oct 15, 2021
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19 changes: 8 additions & 11 deletions client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -465,7 +465,7 @@ func baseRetryPolicy(resp *http.Response, err error) (bool, error) {
// the server time to recover, as 500's are typically not permanent
// errors and may relate to outages on the server side. This will catch
// invalid response codes as well, like 0 and 999.
if resp.StatusCode == 0 || (resp.StatusCode >= 500 && resp.StatusCode != 501) {
if resp.StatusCode == 0 || (resp.StatusCode >= 500 && resp.StatusCode != http.StatusNotImplemented) {
return true, fmt.Errorf("unexpected HTTP status %s", resp.Status)
}

Expand Down Expand Up @@ -570,8 +570,6 @@ func (c *Client) Do(req *Request) (*http.Response, error) {
for i := 0; ; i++ {
attempt++

var code int // HTTP response code

// Always rewind the request body when non-nil.
if req.body != nil {
body, err := req.body()
Expand Down Expand Up @@ -599,9 +597,6 @@ func (c *Client) Do(req *Request) (*http.Response, error) {

// Attempt the request
resp, doErr = c.HTTPClient.Do(req.Request)
if resp != nil {
code = resp.StatusCode
}

// Check if we should continue with retries.
shouldRetry, checkErr = c.CheckRetry(req.Context(), resp, doErr)
Expand Down Expand Up @@ -646,23 +641,25 @@ func (c *Client) Do(req *Request) (*http.Response, error) {
}

wait := c.Backoff(c.RetryWaitMin, c.RetryWaitMax, i, resp)
desc := fmt.Sprintf("%s %s", req.Method, req.URL)
if code > 0 {
desc = fmt.Sprintf("%s (status: %d)", desc, code)
}
if logger != nil {
desc := fmt.Sprintf("%s %s", req.Method, req.URL)
if resp != nil {
desc = fmt.Sprintf("%s (status: %d)", desc, resp.StatusCode)
}
switch v := logger.(type) {
case LeveledLogger:
v.Debug("retrying request", "request", desc, "timeout", wait, "remaining", remain)
case Logger:
v.Printf("[DEBUG] %s: retrying in %s (%d left)", desc, wait, remain)
}
}
timer := time.NewTimer(wait)
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select {
case <-req.Context().Done():
timer.Stop()
c.HTTPClient.CloseIdleConnections()
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return nil, req.Context().Err()
case <-time.After(wait):
case <-timer.C:
}

// Make shallow copy of http Request so that we can modify its body
Expand Down