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/*
*
* Copyright 2020 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package testutils
import (
"net"
"strconv"
v2xdspb "github.com/envoyproxy/go-control-plane/envoy/api/v2"
v2corepb "github.com/envoyproxy/go-control-plane/envoy/api/v2/core"
v2endpointpb "github.com/envoyproxy/go-control-plane/envoy/api/v2/endpoint"
v3corepb "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
v2typepb "github.com/envoyproxy/go-control-plane/envoy/type"
wrapperspb "github.com/golang/protobuf/ptypes/wrappers"
"google.golang.org/grpc/xds/internal"
)
// EmptyNodeProtoV2 is a v2 Node proto with no fields set.
var EmptyNodeProtoV2 = &v2corepb.Node{}
// EmptyNodeProtoV3 is a v3 Node proto with no fields set.
var EmptyNodeProtoV3 = &v3corepb.Node{}
// LocalityIDToProto converts a LocalityID to its proto representation.
func LocalityIDToProto(l internal.LocalityID) *v2corepb.Locality {
return &v2corepb.Locality{
Region: l.Region,
Zone: l.Zone,
SubZone: l.SubZone,
}
}
// The helper structs/functions related to EDS protos are used in EDS balancer
// tests now, to generate test inputs. Eventually, EDS balancer tests should
// generate EndpointsUpdate directly, instead of generating and parsing the
// proto message.
// TODO: Once EDS balancer tests don't use these, these can be moved to v2 client code.
// ClusterLoadAssignmentBuilder builds a ClusterLoadAssignment, aka EDS
// response.
type ClusterLoadAssignmentBuilder struct {
v *v2xdspb.ClusterLoadAssignment
}
// NewClusterLoadAssignmentBuilder creates a ClusterLoadAssignmentBuilder.
func NewClusterLoadAssignmentBuilder(clusterName string, dropPercents map[string]uint32) *ClusterLoadAssignmentBuilder {
drops := make([]*v2xdspb.ClusterLoadAssignment_Policy_DropOverload, 0, len(dropPercents))
for n, d := range dropPercents {
drops = append(drops, &v2xdspb.ClusterLoadAssignment_Policy_DropOverload{
Category: n,
DropPercentage: &v2typepb.FractionalPercent{
Numerator: d,
Denominator: v2typepb.FractionalPercent_HUNDRED,
},
})
}
return &ClusterLoadAssignmentBuilder{
v: &v2xdspb.ClusterLoadAssignment{
ClusterName: clusterName,
Policy: &v2xdspb.ClusterLoadAssignment_Policy{
DropOverloads: drops,
},
},
}
}
// AddLocalityOptions contains options when adding locality to the builder.
type AddLocalityOptions struct {
Health []v2corepb.HealthStatus
Weight []uint32
}
// AddLocality adds a locality to the builder.
func (clab *ClusterLoadAssignmentBuilder) AddLocality(subzone string, weight uint32, priority uint32, addrsWithPort []string, opts *AddLocalityOptions) {
lbEndPoints := make([]*v2endpointpb.LbEndpoint, 0, len(addrsWithPort))
for i, a := range addrsWithPort {
host, portStr, err := net.SplitHostPort(a)
if err != nil {
panic("failed to split " + a)
}
port, err := strconv.Atoi(portStr)
if err != nil {
panic("failed to atoi " + portStr)
}
lbe := &v2endpointpb.LbEndpoint{
HostIdentifier: &v2endpointpb.LbEndpoint_Endpoint{
Endpoint: &v2endpointpb.Endpoint{
Address: &v2corepb.Address{
Address: &v2corepb.Address_SocketAddress{
SocketAddress: &v2corepb.SocketAddress{
Protocol: v2corepb.SocketAddress_TCP,
Address: host,
PortSpecifier: &v2corepb.SocketAddress_PortValue{
PortValue: uint32(port)}}}}}},
}
if opts != nil {
if i < len(opts.Health) {
lbe.HealthStatus = opts.Health[i]
}
if i < len(opts.Weight) {
lbe.LoadBalancingWeight = &wrapperspb.UInt32Value{Value: opts.Weight[i]}
}
}
lbEndPoints = append(lbEndPoints, lbe)
}
var localityID *v2corepb.Locality
if subzone != "" {
localityID = &v2corepb.Locality{
Region: "",
Zone: "",
SubZone: subzone,
}
}
clab.v.Endpoints = append(clab.v.Endpoints, &v2endpointpb.LocalityLbEndpoints{
Locality: localityID,
LbEndpoints: lbEndPoints,
LoadBalancingWeight: &wrapperspb.UInt32Value{Value: weight},
Priority: priority,
})
}
// Build builds ClusterLoadAssignment.
func (clab *ClusterLoadAssignmentBuilder) Build() *v2xdspb.ClusterLoadAssignment {
return clab.v
}
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