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xds/internal/xdsclient: Process string metadata in CDS for com.google.csm.telemetry_labels #7085

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merged 3 commits into from
Apr 9, 2024
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xds/internal/xdsclient: Process string metadata in CDS for com.google.csm.telemetry_labels #7085

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bd4d2a7
Process string metadata in CDS for com.google.csm.telemetry_labels
zasweq Apr 3, 2024
20092f4
Switch to only parse csm specific string labels
zasweq Apr 3, 2024
dcc290c
Responded to Doug's comments
zasweq Apr 5, 2024
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4 changes: 4 additions & 0 deletions xds/internal/xdsclient/xdsresource/type_cds.go
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Original file line number Diff line number Diff line change
Expand Up @@ -85,4 +85,8 @@ type ClusterUpdate struct {

// Raw is the resource from the xds response.
Raw *anypb.Any
// TelemetryLabels are the string valued metadata of filter_metadata type
// "com.google.csm.telemetry_labels" with keys "service_name" or
// "service_namespace".
TelemetryLabels map[string]string
}
20 changes: 20 additions & 0 deletions xds/internal/xdsclient/xdsresource/unmarshal_cds.go
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Expand Up @@ -39,6 +39,7 @@ import (
"google.golang.org/grpc/xds/internal/xdsclient/xdsresource/version"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/structpb"
)

// ValidateClusterAndConstructClusterUpdateForTesting exports the
Expand Down Expand Up @@ -81,6 +82,24 @@ const (
)

func validateClusterAndConstructClusterUpdate(cluster *v3clusterpb.Cluster) (ClusterUpdate, error) {
telemetryLabels := make(map[string]string)
if fmd := cluster.GetMetadata().GetFilterMetadata(); fmd != nil {
if val, ok := fmd["com.google.csm.telemetry_labels"]; ok {
if fields := val.GetFields(); fields != nil {
if val, ok := fields["service_name"]; ok {
if _, ok := val.GetKind().(*structpb.Value_StringValue); ok {
telemetryLabels["service_name"] = val.GetStringValue()
}
}
if val, ok := fields["service_namespace"]; ok {
if _, ok := val.GetKind().(*structpb.Value_StringValue); ok {
telemetryLabels["service_namespace"] = val.GetStringValue()
}
}
}
}
}

var lbPolicy json.RawMessage
var err error
switch cluster.GetLbPolicy() {
Expand Down Expand Up @@ -160,6 +179,7 @@ func validateClusterAndConstructClusterUpdate(cluster *v3clusterpb.Cluster) (Clu
MaxRequests: circuitBreakersFromCluster(cluster),
LBPolicy: lbPolicy,
OutlierDetection: od,
TelemetryLabels: telemetryLabels,
}

// Note that this is different from the gRFC (gRFC A47 says to include the
Expand Down
95 changes: 95 additions & 0 deletions xds/internal/xdsclient/xdsresource/unmarshal_cds_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@ import (
v3matcherpb "github.com/envoyproxy/go-control-plane/envoy/type/matcher/v3"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/durationpb"
"google.golang.org/protobuf/types/known/structpb"
"google.golang.org/protobuf/types/known/wrapperspb"
)

Expand Down Expand Up @@ -1216,6 +1217,71 @@ func (s) TestUnmarshalCluster(t *testing.T) {
},
},
})

v3ClusterAnyWithTelemetryLabels = testutils.MarshalAny(t, &v3clusterpb.Cluster{
Name: v3ClusterName,
ClusterDiscoveryType: &v3clusterpb.Cluster_Type{Type: v3clusterpb.Cluster_EDS},
EdsClusterConfig: &v3clusterpb.Cluster_EdsClusterConfig{
EdsConfig: &v3corepb.ConfigSource{
ConfigSourceSpecifier: &v3corepb.ConfigSource_Ads{
Ads: &v3corepb.AggregatedConfigSource{},
},
},
ServiceName: v3Service,
},
LbPolicy: v3clusterpb.Cluster_ROUND_ROBIN,
LrsServer: &v3corepb.ConfigSource{
ConfigSourceSpecifier: &v3corepb.ConfigSource_Self{
Self: &v3corepb.SelfConfigSource{},
},
},
Metadata: &v3corepb.Metadata{
FilterMetadata: map[string]*structpb.Struct{
"com.google.csm.telemetry_labels": {
Fields: map[string]*structpb.Value{
"service_name": structpb.NewStringValue("grpc-service"),
"service_namespace": structpb.NewStringValue("grpc-service-namespace"),
},
},
},
},
})
v3ClusterAnyWithTelemetryLabelsIgnoreSome = testutils.MarshalAny(t, &v3clusterpb.Cluster{
Name: v3ClusterName,
ClusterDiscoveryType: &v3clusterpb.Cluster_Type{Type: v3clusterpb.Cluster_EDS},
EdsClusterConfig: &v3clusterpb.Cluster_EdsClusterConfig{
EdsConfig: &v3corepb.ConfigSource{
ConfigSourceSpecifier: &v3corepb.ConfigSource_Ads{
Ads: &v3corepb.AggregatedConfigSource{},
},
},
ServiceName: v3Service,
},
LbPolicy: v3clusterpb.Cluster_ROUND_ROBIN,
LrsServer: &v3corepb.ConfigSource{
ConfigSourceSpecifier: &v3corepb.ConfigSource_Self{
Self: &v3corepb.SelfConfigSource{},
},
},
Metadata: &v3corepb.Metadata{
FilterMetadata: map[string]*structpb.Struct{
"com.google.csm.telemetry_labels": {
Fields: map[string]*structpb.Value{
"string-value-should-ignore": structpb.NewStringValue("string-val"),
"float-value-ignore": structpb.NewNumberValue(3),
"bool-value-ignore": structpb.NewBoolValue(false),
"service_name": structpb.NewStringValue("grpc-service"), // shouldn't ignore
"service_namespace": structpb.NewNullValue(), // should ignore - wrong type
},
},
"ignore-this-metadata": { // should ignore this filter_metadata
Fields: map[string]*structpb.Value{
"service_namespace": structpb.NewStringValue("string-val-should-ignore"),
},
},
},
},
})
)

tests := []struct {
Expand Down Expand Up @@ -1300,6 +1366,35 @@ func (s) TestUnmarshalCluster(t *testing.T) {
Raw: v3ClusterAnyWithEDSConfigSourceSelf,
},
},
{
name: "v3 cluster with telemetry case",
resource: v3ClusterAnyWithTelemetryLabels,
wantName: v3ClusterName,
wantUpdate: ClusterUpdate{
ClusterName: v3ClusterName,
EDSServiceName: v3Service,
LRSServerConfig: ClusterLRSServerSelf,
Raw: v3ClusterAnyWithTelemetryLabels,
TelemetryLabels: map[string]string{
"service_name": "grpc-service",
"service_namespace": "grpc-service-namespace",
},
},
},
{
name: "v3 metadata ignore other types not string and not com.google.csm.telemetry_labels",
resource: v3ClusterAnyWithTelemetryLabelsIgnoreSome,
wantName: v3ClusterName,
wantUpdate: ClusterUpdate{
ClusterName: v3ClusterName,
EDSServiceName: v3Service,
LRSServerConfig: ClusterLRSServerSelf,
Raw: v3ClusterAnyWithTelemetryLabelsIgnoreSome,
TelemetryLabels: map[string]string{
"service_name": "grpc-service",
},
},
},
{
name: "xdstp cluster resource with unset EDS service name",
resource: testutils.MarshalAny(t, &v3clusterpb.Cluster{
Expand Down
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