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/*
*
* Copyright 2022 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 orca_test
import (
"testing"
"time"
"github.com/golang/protobuf/proto"
"github.com/google/go-cmp/cmp"
"google.golang.org/grpc/internal/grpctest"
"google.golang.org/grpc/internal/pretty"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/orca/internal"
v3orcapb "github.com/cncf/xds/go/xds/data/orca/v3"
)
type s struct {
grpctest.Tester
}
func Test(t *testing.T) {
grpctest.RunSubTests(t, s{})
}
const defaultTestTimeout = 5 * time.Second
func (s) TestToLoadReport(t *testing.T) {
goodReport := &v3orcapb.OrcaLoadReport{
CpuUtilization: 1.0,
MemUtilization: 50.0,
RequestCost: map[string]float64{"queryCost": 25.0},
Utilization: map[string]float64{"queueSize": 75.0},
}
tests := []struct {
name string
md metadata.MD
want *v3orcapb.OrcaLoadReport
wantErr bool
}{
{
name: "no load report in metadata",
md: metadata.MD{},
wantErr: false,
},
{
name: "badly marshaled load report",
md: func() metadata.MD {
return metadata.Pairs("endpoint-load-metrics-bin", string("foo-bar"))
}(),
wantErr: true,
},
{
name: "multiple load reports",
md: func() metadata.MD {
b, _ := proto.Marshal(goodReport)
return metadata.Pairs("endpoint-load-metrics-bin", string(b), "endpoint-load-metrics-bin", string(b))
}(),
wantErr: true,
},
{
name: "good load report",
md: func() metadata.MD {
b, _ := proto.Marshal(goodReport)
return metadata.Pairs("endpoint-load-metrics-bin", string(b))
}(),
want: goodReport,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got, err := internal.ToLoadReport(test.md)
if (err != nil) != test.wantErr {
t.Fatalf("orca.ToLoadReport(%v) = %v, wantErr: %v", test.md, err, test.wantErr)
}
if test.wantErr {
return
}
if !cmp.Equal(got, test.want, cmp.Comparer(proto.Equal)) {
t.Fatalf("Extracted load report from metadata: %s, want: %s", pretty.ToJSON(got), pretty.ToJSON(test.want))
}
})
}
}
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