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lib/promscrape/discovery/consul: make sure that block response contains X-Consul-Index header

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This commit is contained in:
Aliaksandr Valialkin 2020-12-03 20:05:23 +02:00
parent 7a889f6850
commit 4e4a93c586
1 changed files with 19 additions and 16 deletions
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7
lib/promscrape/discovery/consul/api.go
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@ -126,7 +126,11 @@ func getBlockingAPIResponse(client *discoveryutils.Client, path string, index in
path += "&index=" + strconv.FormatInt(index, 10) path += "&index=" + strconv.FormatInt(index, 10)
path += "&wait=" + maxWaitTimeStr path += "&wait=" + maxWaitTimeStr
getMeta := func(resp *fasthttp.Response) { getMeta := func(resp *fasthttp.Response) {
if ind := resp.Header.Peek("X-Consul-Index"); len(ind) > 0 { ind := resp.Header.Peek("X-Consul-Index")
if len(ind) == 0 {
logger.Errorf("cannot find X-Consul-Index header in response from %q", path)
return
}
newIndex, err := strconv.ParseInt(string(ind), 10, 64) newIndex, err := strconv.ParseInt(string(ind), 10, 64)
if err != nil { if err != nil {
logger.Errorf("cannot parse X-Consul-Index header value in response from %q: %s", path, err) logger.Errorf("cannot parse X-Consul-Index header value in response from %q: %s", path, err)
@ -143,7 +147,6 @@ func getBlockingAPIResponse(client *discoveryutils.Client, path string, index in
} }
index = newIndex index = newIndex
} }
}
data, err := client.GetBlockingAPIResponse(path, getMeta) data, err := client.GetBlockingAPIResponse(path, getMeta)
if err != nil { if err != nil {
return nil, index, fmt.Errorf("cannot perform blocking Consul API request at %q: %w", path, err) return nil, index, fmt.Errorf("cannot perform blocking Consul API request at %q: %w", path, err)