forked from TrueCloudLab/restic
423 lines
11 KiB
Go
423 lines
11 KiB
Go
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package profiler
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import (
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"errors"
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"io"
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"runtime/pprof"
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"strings"
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"testing"
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"time"
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gcemd "cloud.google.com/go/compute/metadata"
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"cloud.google.com/go/internal/testutil"
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"cloud.google.com/go/profiler/mocks"
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"github.com/golang/mock/gomock"
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"github.com/golang/protobuf/proto"
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"github.com/golang/protobuf/ptypes"
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gax "github.com/googleapis/gax-go"
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"golang.org/x/net/context"
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pb "google.golang.org/genproto/googleapis/devtools/cloudprofiler/v2"
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edpb "google.golang.org/genproto/googleapis/rpc/errdetails"
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"google.golang.org/grpc/codes"
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grpcmd "google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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)
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const (
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testProjectID = "test-project-ID"
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testInstanceName = "test-instance-name"
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testZoneName = "test-zone-name"
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testTarget = "test-target"
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testService = "test-service"
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testServiceVersion = "test-service-version"
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)
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func createTestDeployment() *pb.Deployment {
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labels := map[string]string{
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zoneNameLabel: testZoneName,
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versionLabel: testServiceVersion,
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}
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return &pb.Deployment{
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ProjectId: testProjectID,
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Target: testService,
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Labels: labels,
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}
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}
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func createTestAgent(psc pb.ProfilerServiceClient) *agent {
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c := &client{client: psc}
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return &agent{
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client: c,
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deployment: createTestDeployment(),
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profileLabels: map[string]string{instanceLabel: testInstanceName},
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}
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}
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func createTrailers(dur time.Duration) map[string]string {
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b, _ := proto.Marshal(&edpb.RetryInfo{
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RetryDelay: ptypes.DurationProto(dur),
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})
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return map[string]string{
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retryInfoMetadata: string(b),
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}
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}
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func TestCreateProfile(t *testing.T) {
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ctx := context.Background()
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ctrl := gomock.NewController(t)
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defer ctrl.Finish()
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mpc := mocks.NewMockProfilerServiceClient(ctrl)
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a := createTestAgent(mpc)
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p := &pb.Profile{Name: "test_profile"}
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wantRequest := pb.CreateProfileRequest{
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Deployment: a.deployment,
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ProfileType: []pb.ProfileType{pb.ProfileType_CPU, pb.ProfileType_HEAP},
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}
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mpc.EXPECT().CreateProfile(ctx, gomock.Eq(&wantRequest), gomock.Any()).Times(1).Return(p, nil)
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gotP := a.createProfile(ctx)
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if !testutil.Equal(gotP, p) {
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t.Errorf("CreateProfile() got wrong profile, got %v, want %v", gotP, p)
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}
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}
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func TestProfileAndUpload(t *testing.T) {
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defer func() {
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startCPUProfile = pprof.StartCPUProfile
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stopCPUProfile = pprof.StopCPUProfile
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writeHeapProfile = pprof.WriteHeapProfile
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sleep = gax.Sleep
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}()
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ctx := context.Background()
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ctrl := gomock.NewController(t)
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defer ctrl.Finish()
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errFunc := func(io.Writer) error { return errors.New("") }
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testDuration := time.Second * 5
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tests := []struct {
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profileType pb.ProfileType
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duration *time.Duration
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startCPUProfileFunc func(io.Writer) error
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writeHeapProfileFunc func(io.Writer) error
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wantBytes []byte
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}{
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{
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profileType: pb.ProfileType_CPU,
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duration: &testDuration,
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startCPUProfileFunc: func(w io.Writer) error {
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w.Write([]byte{1})
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return nil
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},
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writeHeapProfileFunc: errFunc,
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wantBytes: []byte{1},
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},
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{
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profileType: pb.ProfileType_CPU,
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startCPUProfileFunc: errFunc,
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writeHeapProfileFunc: errFunc,
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},
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{
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profileType: pb.ProfileType_CPU,
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duration: &testDuration,
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startCPUProfileFunc: func(w io.Writer) error {
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w.Write([]byte{2})
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return nil
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},
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writeHeapProfileFunc: func(w io.Writer) error {
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w.Write([]byte{3})
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return nil
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},
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wantBytes: []byte{2},
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},
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{
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profileType: pb.ProfileType_HEAP,
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startCPUProfileFunc: errFunc,
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writeHeapProfileFunc: func(w io.Writer) error {
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w.Write([]byte{4})
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return nil
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},
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wantBytes: []byte{4},
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},
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{
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profileType: pb.ProfileType_HEAP,
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startCPUProfileFunc: errFunc,
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writeHeapProfileFunc: errFunc,
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},
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{
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profileType: pb.ProfileType_HEAP,
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startCPUProfileFunc: func(w io.Writer) error {
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w.Write([]byte{5})
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return nil
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},
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writeHeapProfileFunc: func(w io.Writer) error {
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w.Write([]byte{6})
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return nil
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},
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wantBytes: []byte{6},
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},
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{
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profileType: pb.ProfileType_PROFILE_TYPE_UNSPECIFIED,
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startCPUProfileFunc: func(w io.Writer) error {
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w.Write([]byte{7})
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return nil
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},
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writeHeapProfileFunc: func(w io.Writer) error {
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w.Write([]byte{8})
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return nil
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},
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},
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}
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for _, tt := range tests {
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mpc := mocks.NewMockProfilerServiceClient(ctrl)
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a := createTestAgent(mpc)
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startCPUProfile = tt.startCPUProfileFunc
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stopCPUProfile = func() {}
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writeHeapProfile = tt.writeHeapProfileFunc
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var gotSleep *time.Duration
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sleep = func(ctx context.Context, d time.Duration) error {
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gotSleep = &d
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return nil
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}
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p := &pb.Profile{ProfileType: tt.profileType}
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if tt.duration != nil {
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p.Duration = ptypes.DurationProto(*tt.duration)
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}
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if tt.wantBytes != nil {
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wantProfile := &pb.Profile{
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ProfileType: p.ProfileType,
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Duration: p.Duration,
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ProfileBytes: tt.wantBytes,
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Labels: a.profileLabels,
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}
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wantRequest := pb.UpdateProfileRequest{
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Profile: wantProfile,
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}
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mpc.EXPECT().UpdateProfile(ctx, gomock.Eq(&wantRequest)).Times(1)
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} else {
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mpc.EXPECT().UpdateProfile(gomock.Any(), gomock.Any()).MaxTimes(0)
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}
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a.profileAndUpload(ctx, p)
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if tt.duration == nil {
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if gotSleep != nil {
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t.Errorf("profileAndUpload(%v) slept for: %v, want no sleep", p, gotSleep)
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}
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} else {
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if gotSleep == nil {
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t.Errorf("profileAndUpload(%v) didn't sleep, want sleep for: %v", p, tt.duration)
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} else if *gotSleep != *tt.duration {
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t.Errorf("profileAndUpload(%v) slept for wrong duration, got: %v, want: %v", p, gotSleep, tt.duration)
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}
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}
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}
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}
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func TestRetry(t *testing.T) {
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normalDuration := time.Second * 3
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negativeDuration := time.Second * -3
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tests := []struct {
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trailers map[string]string
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wantPause *time.Duration
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}{
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{
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createTrailers(normalDuration),
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&normalDuration,
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},
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{
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createTrailers(negativeDuration),
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nil,
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},
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{
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map[string]string{retryInfoMetadata: "wrong format"},
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nil,
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},
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{
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map[string]string{},
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nil,
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},
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}
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for _, tt := range tests {
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md := grpcmd.New(tt.trailers)
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r := &retryer{
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backoff: gax.Backoff{
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Initial: initialBackoff,
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Max: maxBackoff,
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Multiplier: backoffMultiplier,
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},
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md: md,
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}
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pause, shouldRetry := r.Retry(status.Error(codes.Aborted, ""))
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if !shouldRetry {
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t.Error("retryer.Retry() returned shouldRetry false, want true")
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}
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if tt.wantPause != nil {
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if pause != *tt.wantPause {
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t.Errorf("retryer.Retry() returned wrong pause, got: %v, want: %v", pause, tt.wantPause)
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}
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} else {
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if pause > initialBackoff {
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t.Errorf("retryer.Retry() returned wrong pause, got: %v, want: < %v", pause, initialBackoff)
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}
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}
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}
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md := grpcmd.New(map[string]string{})
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r := &retryer{
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backoff: gax.Backoff{
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Initial: initialBackoff,
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Max: maxBackoff,
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Multiplier: backoffMultiplier,
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},
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md: md,
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}
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for i := 0; i < 100; i++ {
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pause, shouldRetry := r.Retry(errors.New(""))
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if !shouldRetry {
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t.Errorf("retryer.Retry() called %v times, returned shouldRetry false, want true", i)
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}
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if pause > maxBackoff {
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t.Errorf("retryer.Retry() called %v times, returned wrong pause, got: %v, want: < %v", i, pause, maxBackoff)
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}
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}
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}
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func TestInitializeResources(t *testing.T) {
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d := createTestDeployment()
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l := map[string]string{instanceLabel: testInstanceName}
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ctx := context.Background()
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a, ctx := initializeResources(ctx, nil, d, l)
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if xg := a.client.xGoogHeader; len(xg) == 0 {
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t.Errorf("initializeResources() sets empty xGoogHeader")
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} else {
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if !strings.Contains(xg[0], "gl-go/") {
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t.Errorf("initializeResources() sets wrong xGoogHeader, got: %v, want gl-go key", xg[0])
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}
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if !strings.Contains(xg[0], "gccl/") {
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t.Errorf("initializeResources() sets wrong xGoogHeader, got: %v, want gccl key", xg[0])
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}
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if !strings.Contains(xg[0], "gax/") {
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t.Errorf("initializeResources() sets wrong xGoogHeader, got: %v, want gax key", xg[0])
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}
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if !strings.Contains(xg[0], "grpc/") {
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t.Errorf("initializeResources() sets wrong xGoogHeader, got: %v, want grpc key", xg[0])
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}
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}
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md, _ := grpcmd.FromOutgoingContext(ctx)
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if !testutil.Equal(md[xGoogAPIMetadata], a.client.xGoogHeader) {
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t.Errorf("md[%v] = %v, want equal xGoogHeader = %v", xGoogAPIMetadata, md[xGoogAPIMetadata], a.client.xGoogHeader)
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}
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}
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func TestInitializeDeployment(t *testing.T) {
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defer func() {
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getProjectID = gcemd.ProjectID
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getZone = gcemd.Zone
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config = Config{}
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}()
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getProjectID = func() (string, error) {
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return testProjectID, nil
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}
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getZone = func() (string, error) {
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return testZoneName, nil
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}
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cfg := Config{Service: testService, ServiceVersion: testServiceVersion}
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initializeConfig(cfg)
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d, err := initializeDeployment()
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if err != nil {
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t.Errorf("initializeDeployment() got error: %v, want no error", err)
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}
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if want := createTestDeployment(); !testutil.Equal(d, want) {
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t.Errorf("initializeDeployment() got: %v, want %v", d, want)
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}
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}
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func TestInitializeConfig(t *testing.T) {
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oldConfig := config
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defer func() {
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config = oldConfig
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}()
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for _, tt := range []struct {
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config Config
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wantTarget string
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wantErrorString string
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}{
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{
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Config{Service: testService},
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testService,
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"",
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},
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{
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Config{Target: testTarget},
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testTarget,
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"",
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},
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{
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Config{},
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"",
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"service name must be specified in the configuration",
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},
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} {
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errorString := ""
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if err := initializeConfig(tt.config); err != nil {
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errorString = err.Error()
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}
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if errorString != tt.wantErrorString {
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t.Errorf("initializeConfig(%v) got error: %v, want %v", tt.config, errorString, tt.wantErrorString)
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}
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if config.Target != tt.wantTarget {
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t.Errorf("initializeConfig(%v) got target: %v, want %v", tt.config, config.Target, tt.wantTarget)
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}
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}
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}
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func TestInitializeProfileLabels(t *testing.T) {
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defer func() {
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getInstanceName = gcemd.InstanceName
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}()
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getInstanceName = func() (string, error) {
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return testInstanceName, nil
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}
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l := initializeProfileLabels()
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want := map[string]string{instanceLabel: testInstanceName}
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if !testutil.Equal(l, want) {
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t.Errorf("initializeProfileLabels() got: %v, want %v", l, want)
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}
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}
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