/
endpoints.go
100 lines (86 loc) · 2.89 KB
/
endpoints.go
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// Copyright Istio 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 xdstest
import (
"fmt"
"sort"
"testing"
endpointv3 "github.com/envoyproxy/go-control-plane/envoy/config/endpoint/v3"
)
type LbEpInfo struct {
Address string
// nolint: structcheck
Weight uint32
}
type LocLbEpInfo struct {
LbEps []LbEpInfo
Weight uint32
}
func (i LocLbEpInfo) GetAddrs() []string {
addrs := make([]string, 0)
for _, ep := range i.LbEps {
addrs = append(addrs, ep.Address)
}
return addrs
}
func CompareEndpointsOrFail(t *testing.T, cluster string, got []*endpointv3.LocalityLbEndpoints, want []LocLbEpInfo) {
if err := CompareEndpoints(cluster, got, want); err != nil {
t.Error(err)
}
}
func CompareEndpoints(cluster string, got []*endpointv3.LocalityLbEndpoints, want []LocLbEpInfo) error {
if len(got) != len(want) {
return fmt.Errorf("unexpected number of filtered endpoints for %s: got %v, want %v", cluster, len(got), len(want))
}
sort.Slice(got, func(i, j int) bool {
addrI := got[i].LbEndpoints[0].GetEndpoint().Address.GetSocketAddress().Address
addrJ := got[j].LbEndpoints[0].GetEndpoint().Address.GetSocketAddress().Address
return addrI < addrJ
})
for i, ep := range got {
if len(ep.LbEndpoints) != len(want[i].LbEps) {
return fmt.Errorf("unexpected number of LB endpoints within endpoint %d: %v, want %v",
i, getLbEndpointAddrs(ep), want[i].GetAddrs())
}
if ep.LoadBalancingWeight.GetValue() != want[i].Weight {
return fmt.Errorf("unexpected weight for endpoint %d: got %v, want %v", i, ep.LoadBalancingWeight.GetValue(), want[i].Weight)
}
for _, lbEp := range ep.LbEndpoints {
addr := lbEp.GetEndpoint().Address.GetSocketAddress().Address
found := false
for _, wantLbEp := range want[i].LbEps {
if addr == wantLbEp.Address {
found = true
// Now compare the weight.
if lbEp.GetLoadBalancingWeight().Value != wantLbEp.Weight {
return fmt.Errorf("unexpected weight for endpoint %s: got %v, want %v",
addr, lbEp.GetLoadBalancingWeight().Value, wantLbEp.Weight)
}
break
}
}
if !found {
return fmt.Errorf("unexpected address for endpoint %d: %v", i, addr)
}
}
}
return nil
}
func getLbEndpointAddrs(ep *endpointv3.LocalityLbEndpoints) []string {
addrs := make([]string, 0)
for _, lbEp := range ep.LbEndpoints {
addrs = append(addrs, lbEp.GetEndpoint().Address.GetSocketAddress().Address)
}
return addrs
}