cephfs admin: ignore deprecation warnings for protect/unprotect

Signed-off-by: John Mulligan <jmulligan@redhat.com>

cephfs/admin/response.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"strings"
 )
 
 var (
@@ -17,6 +18,10 @@ var (
 	ErrBodyNotEmpty = errors.New("response body not empty")
 )
 
+const (
+	deprecatedSuffix = "call is deprecated and will be removed in a future release"
+)
+
 // response encapsulates the data returned by ceph and supports easy processing
 // pipelines.
 type response struct {
@@ -84,6 +89,19 @@ func (r response) noData() response {
 	return r.noStatus().noBody()
 }
 
+// filterDeprecated removes deprecation warnings from the response status.
+// Use it when checking the response from calls that may be deprecated in ceph
+// if you want those calls to continue working if the warning is present.
+func (r response) filterDeprecated() response {
+	if !r.Ok() {
+		return r
+	}
+	if strings.HasSuffix(r.status, deprecatedSuffix) {
+		return response{r.body, "", r.err}
+	}
+	return r
+}
+
 // unmarshal data from the response body into v.
 func (r response) unmarshal(v interface{}) response {
 	if !r.Ok() {

cephfs/admin/subvolume.go

@@ -280,7 +280,7 @@ func (fsa *FSAdmin) ProtectSubVolumeSnapshot(volume, group, subvolume, name stri
 	if group != NoGroup {
 		m["group_name"] = group
 	}
-	return fsa.marshalMgrCommand(m).noData().End()
+	return fsa.marshalMgrCommand(m).filterDeprecated().noData().End()
 }
 
 // UnprotectSubVolumeSnapshot removes protection from the specified snapshot.
@@ -298,5 +298,5 @@ func (fsa *FSAdmin) UnprotectSubVolumeSnapshot(volume, group, subvolume, name st
 	if group != NoGroup {
 		m["group_name"] = group
 	}
-	return fsa.marshalMgrCommand(m).noData().End()
+	return fsa.marshalMgrCommand(m).filterDeprecated().noData().End()
 }