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feat: support Tempo Query V2 and search tag values endpoint in trace RBAC #916

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Merged
pavolloffay merged 3 commits into from
Jul 24, 2026
+342 −10
Merged

feat: support Tempo Query V2 and search tag values endpoint in trace RBAC #916

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7efb62f
feat: support Tempo Query V2 and search tag values endpoint in trace …
andreasgerstmayr Jul 10, 2026
e245460
Merge remote-tracking branch 'upstream/main' into tempo-query-v2
andreasgerstmayr Jul 22, 2026
b1e85f6
add warning in default case
andreasgerstmayr Jul 23, 2026
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48 changes: 39 additions & 9 deletions api/traces/v1/trace_rbac.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,10 +24,15 @@ const (
serviceAttributeKey = "service.name"
)

var allowedTempoAPIs = []*regexp.Regexp{
regexp.MustCompile(`^/api/traces/\w+$`),
regexp.MustCompile(`^/api/search$`),
}
var (
routeQueryV1 = regexp.MustCompile(`^/api/traces/\w+$`)
routeQueryV2 = regexp.MustCompile(`^/api/v2/traces/\w+$`)
routeSearch = regexp.MustCompile(`^/api/search$`)
routeSearchTagValues = regexp.MustCompile(`^/api/v2/search/tag/(resource\.service\.name|resource\.k8s\.namespace\.name)/values$`)

allowedTempoAPIs = []*regexp.Regexp{routeQueryV1, routeQueryV2, routeSearch, routeSearchTagValues}
filteredAPIs = []*regexp.Regexp{routeQueryV1, routeQueryV2, routeSearch}
)

func matchesAnyRegex(s string, patterns []*regexp.Regexp) bool {
for _, re := range patterns {
Expand Down Expand Up @@ -77,9 +82,11 @@ func WithTraceQLNamespaceSelectAndForbidOtherAPIs(enabled bool) func(http.Handle

func responseRBACModifier(log log.Logger) func(response *http.Response) error {
return func(response *http.Response) error {
if strings.HasPrefix(response.Request.URL.Path, "/api/traces/") || strings.HasPrefix(response.Request.URL.Path, "/api/search") {
request := response.Request

if matchesAnyRegex(request.URL.Path, filteredAPIs) {
allowedNamespaces := map[string]bool{}
namespaces := apilogsv1.AllowedNamespaces(response.Request.Context())
namespaces := apilogsv1.AllowedNamespaces(request.Context())
for _, ns := range namespaces {
allowedNamespaces[ns] = true
}
Expand All @@ -92,7 +99,8 @@ func responseRBACModifier(log log.Logger) func(response *http.Response) error {
}

responseBuffer := &bytes.Buffer{}
if strings.HasPrefix(response.Request.URL.Path, "/api/traces/") {
switch {

@pavolloffay pavolloffay Jul 23, 2026

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shall we add a default case with some logging?

@andreasgerstmayr andreasgerstmayr Jul 23, 2026

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added

case routeQueryV1.MatchString(request.URL.Path):
trace := &tempopb.Trace{}
err = tempopb.UnmarshalFromJSONV1(b, trace)
if err != nil {
Expand All @@ -105,9 +113,26 @@ func responseRBACModifier(log log.Logger) func(response *http.Response) error {
return err
}
responseBuffer = bytes.NewBuffer(traceResponseBody)
} else {

case routeQueryV2.MatchString(request.URL.Path):
traceByIDResponse := &tempopb.TraceByIDResponse{}
unmarshaller := jsonpb.Unmarshaler{}
err = unmarshaller.Unmarshal(bytes.NewReader(b), traceByIDResponse)
if err != nil {
return err
}
traceByIDResponse.Trace = traceRBAC(allowedNamespaces, traceByIDResponse.Trace)

marshaller := jsonpb.Marshaler{}
err = marshaller.Marshal(responseBuffer, traceByIDResponse)
if err != nil {
return err
}

case routeSearch.MatchString(request.URL.Path):
searchResponse := &tempopb.SearchResponse{}
err = jsonpb.UnmarshalString(string(b), searchResponse)
unmarshaller := jsonpb.Unmarshaler{}
err = unmarshaller.Unmarshal(bytes.NewReader(b), searchResponse)
if err != nil {
return err
}
Expand All @@ -118,6 +143,11 @@ func responseRBACModifier(log log.Logger) func(response *http.Response) error {
if err != nil {
return err
}

default:
level.Warn(log).Log("msg", "unhandled filtered API path", "path", request.URL.Path)
responseBuffer = bytes.NewBufferString("forbidden")
response.StatusCode = http.StatusForbidden
}
response.Body = io.NopCloser(responseBuffer)
response.Header["Content-Length"] = []string{fmt.Sprint(responseBuffer.Len())}
Expand Down
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