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fix: make sure to use new restClient for healthcheck (#10026)

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Without instantiating a new rest client we can
have a recursive error which can lead to
healthcheck returning always offline, this can
prematurely take the servers offline.
This commit is contained in:
Harshavardhana
2020-07-11 22:19:38 -07:00
committed by GitHub
parent c2fdf73491
commit 3b9fbf80ad
8 changed files with 43 additions and 59 deletions
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20
cmd/peer-rest-client.go
View File

@@ -846,19 +846,14 @@ func newPeerRestClients(endpoints EndpointZones) []*peerRESTClient {
peerHosts := getRemoteHosts(endpoints)
restClients := make([]*peerRESTClient, len(peerHosts))
for i, host := range peerHosts {
client, err := newPeerRESTClient(host)
if err != nil {
logger.LogIf(GlobalContext, err)
continue
}
restClients[i] = client
restClients[i] = newPeerRESTClient(host)
}
return restClients
}
// Returns a peer rest client.
func newPeerRESTClient(peer *xnet.Host) (*peerRESTClient, error) {
func newPeerRESTClient(peer *xnet.Host) *peerRESTClient {
scheme := "http"
if globalIsSSL {
scheme = "https"
@@ -879,20 +874,19 @@ func newPeerRESTClient(peer *xnet.Host) (*peerRESTClient, error) {
}
trFn := newCustomHTTPTransport(tlsConfig, rest.DefaultRESTTimeout)
restClient, err := rest.NewClient(serverURL, trFn, newAuthToken)
if err != nil {
return nil, err
}
restClient := rest.NewClient(serverURL, trFn, newAuthToken)
// Construct a new health function.
restClient.HealthCheckFn = func() bool {
ctx, cancel := context.WithTimeout(GlobalContext, restClient.HealthCheckTimeout)
respBody, err := restClient.CallWithContext(ctx, peerRESTMethodHealth, nil, nil, -1)
// Instantiate a new rest client for healthcheck
// to avoid recursive healthCheckFn()
respBody, err := rest.NewClient(serverURL, trFn, newAuthToken).CallWithContext(ctx, peerRESTMethodHealth, nil, nil, -1)
xhttp.DrainBody(respBody)
cancel()
var ne *rest.NetworkError
return !errors.Is(err, context.DeadlineExceeded) && !errors.As(err, &ne)
}
return &peerRESTClient{host: peer, restClient: restClient}, nil
return &peerRESTClient{host: peer, restClient: restClient}
}