ADD GCB benchmark code

DEVELOPMENT.md

@@ -166,6 +166,21 @@ Additionally, the integration tests can output benchmarking information to a `be
 BENCHMARK=true go test -v --bucket $GCS_BUCKET --repo $IMAGE_REPO
 ```
 
+#### Benchmarking your GCB runs
+If you are GCB builds are slow, you can check which phases in kaniko are bottlenecks or taking more time.
+To do this, add "BENCHMARK_ENV" to your cloudbuild.yaml like this.
+```shell script
+steps:
+- name: 'gcr.io/kaniko-project/executor:latest'
+  args:
+  - --build-arg=NUM=${_COUNT}
+  - --no-push
+  - --snapshotMode=redo
+  env:
+  - 'BENCHMARK_FILE=gs://$PROJECT_ID/gcb/benchmark_file'
+```
+You can download the file `gs://$PROJECT_ID/gcb/benchmark_file` using `gsutil cp` command.
+
 ## Creating a PR
 
 When you have changes you would like to propose to kaniko, you will need to:

cmd/executor/cmd/root.go

@@ -115,16 +115,27 @@ var RootCmd = &cobra.Command{
 		benchmarkFile := os.Getenv("BENCHMARK_FILE")
 		// false is a keyword for integration tests to turn off benchmarking
 		if benchmarkFile != "" && benchmarkFile != "false" {
-			f, err := os.Create(benchmarkFile)
-			if err != nil {
-				logrus.Warnf("Unable to create benchmarking file %s: %s", benchmarkFile, err)
-			}
-			defer f.Close()
 			s, err := timing.JSON()
 			if err != nil {
 				logrus.Warnf("Unable to write benchmark file: %s", err)
+				return
+			}
+			if strings.HasPrefix(benchmarkFile, "gs://") {
+				logrus.Info("uploading to gcs")
+				if err := buildcontext.UploadToBucket(strings.NewReader(s), benchmarkFile); err != nil {
+					logrus.Infof("Unable to upload %s due to %v", benchmarkFile, err)
+				}
+				logrus.Infof("benchmark file written at %s", benchmarkFile)
+			} else {
+				f, err := os.Create(benchmarkFile)
+				if err != nil {
+					logrus.Warnf("Unable to create benchmarking file %s: %s", benchmarkFile, err)
+					return
+				}
+				defer f.Close()
+				f.WriteString(s)
+				logrus.Infof("benchmark file written at %s", benchmarkFile)
 			}
-			f.WriteString(s)
 		}
 	},
 }

integration/benchmark_fs/Dockerfile

@@ -0,0 +1,21 @@
+# Copyright 2020 Google, Inc. All rights reserved.
+#
+# 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.
+FROM bash:4.4
+
+ARG NUM
+COPY context.txt .
+COPY make.sh .
+SHELL ["/usr/local/bin/bash", "-c"]
+RUN ./make.sh $NUM
+RUN ls -al /workdir | wc

integration/benchmark_fs/cloudbuild.yaml

@@ -0,0 +1,12 @@
+steps:
+- name: 'gcr.io/kaniko-project/executor:latest'
+  args:
+  - --build-arg=NUM=${_COUNT}
+  - --no-push
+  - --snapshotMode=redo
+  env:
+  - 'BENCHMARK_FILE=gs://$PROJECT_ID/gcb/benchmark_file_${_COUNT}'
+  timeout: 2400s
+timeout: 2400s
+substitutions:
+  _COUNT: "10000" # default value

integration/benchmark_fs/make.sh

@@ -17,7 +17,8 @@
 mkdir /workdir
 
 i=1
-while [ $i -le $1 ]
+targetCnt=$(( $1 + 0 ))
+while [ $i -le $targetCnt ]
 do
   cat context.txt >  /workdir/somefile$i
   i=$(( $i + 1 ))

integration/benchmark_test.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"strconv"
 	"sync"
@@ -32,6 +33,7 @@ type result struct {
 	totalBuildTime float64
 	resolvingFiles float64
 	walkingFiles   float64
+	hashingFiles   float64
 }
 
 func TestSnapshotBenchmark(t *testing.T) {
@@ -44,7 +46,7 @@ func TestSnapshotBenchmark(t *testing.T) {
 	}
 	contextDir := filepath.Join(cwd, "benchmark_fs")
 
-	nums := []int{10000, 50000, 100000, 200000, 300000, 500000, 700000, 800000}
+	nums := []int{10000, 50000, 100000, 200000, 300000, 500000, 700000}
 
 	var timeMap sync.Map
 	var wg sync.WaitGroup
@@ -53,7 +55,7 @@ func TestSnapshotBenchmark(t *testing.T) {
 			wg.Add(1)
 			var err error
 			go func(num int, err *error) {
-				dockerfile := "Dockerfile_fs_benchmark"
+				dockerfile := "Dockerfile"
 				kanikoImage := fmt.Sprintf("%s_%d", GetKanikoImage(config.imageRepo, dockerfile), num)
 				buildArgs := []string{"--build-arg", fmt.Sprintf("NUM=%d", num)}
 				var benchmarkDir string
@@ -106,5 +108,68 @@ func newResult(t *testing.T, f string) result {
 	if c, ok := current["Total Build Time"]; ok {
 		r.totalBuildTime = c.Seconds()
 	}
+	if c, ok := current["Hashing files"]; ok {
+		r.hashingFiles = c.Seconds()
+	}
+	fmt.Println(r)
 	return r
 }
+
+func TestSnapshotBenchmarkGcloud(t *testing.T) {
+	if b, err := strconv.ParseBool(os.Getenv("BENCHMARK")); err != nil || !b {
+		t.SkipNow()
+	}
+	cwd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	contextDir := filepath.Join(cwd, "benchmark_fs")
+
+	nums := []int{10000, 50000, 100000, 200000, 300000, 500000, 700000}
+
+	var wg sync.WaitGroup
+	fmt.Println("Number of Files,Total Build Time,Walking Filesystem, Resolving Files")
+	for _, num := range nums {
+		t.Run(fmt.Sprintf("test_benchmark_%d", num), func(t *testing.T) {
+			wg.Add(1)
+			go func(num int) {
+				dir, err := runInGcloud(contextDir, num)
+				if err != nil {
+					t.Errorf("error when running in gcloud %v", err)
+					return
+				}
+				r := newResult(t, filepath.Join(dir, "results"))
+				fmt.Println(fmt.Sprintf("%d,%f,%f,%f, %f", num, r.totalBuildTime, r.walkingFiles, r.resolvingFiles, r.hashingFiles))
+				wg.Done()
+				defer os.Remove(dir)
+				defer os.Chdir(cwd)
+			}(num)
+		})
+	}
+	wg.Wait()
+}
+
+func runInGcloud(dir string, num int) (string, error) {
+	os.Chdir(dir)
+	cmd := exec.Command("gcloud", "builds",
+		"submit", "--config=cloudbuild.yaml",
+		fmt.Sprintf("--substitutions=_COUNT=%d", num))
+	_, err := RunCommandWithoutTest(cmd)
+	if err != nil {
+		return "", err
+	}
+
+	// grab gcs and to temp dir and return
+	tmpDir, err := ioutil.TempDir("", fmt.Sprintf("%d", num))
+	if err != nil {
+		return "", err
+	}
+	src := fmt.Sprintf("%s/gcb/benchmark_file_%d", config.gcsBucket, num)
+	dest := filepath.Join(tmpDir, "results")
+	copyCommand := exec.Command("gsutil", "cp", src, dest)
+	_, err = RunCommandWithoutTest(copyCommand)
+	if err != nil {
+		return "", fmt.Errorf("failed to download file to GCS bucket %s: %s", src, err)
+	}
+	return tmpDir, nil
+}

pkg/buildcontext/gcs.go

@@ -17,8 +17,10 @@ limitations under the License.
 package buildcontext
 
 import (
+	"io"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"cloud.google.com/go/storage"
 	"github.com/GoogleContainerTools/kaniko/pkg/constants"
@@ -37,6 +39,25 @@ func (g *GCS) UnpackTarFromBuildContext() (string, error) {
 	return constants.BuildContextDir, unpackTarFromGCSBucket(bucket, item, constants.BuildContextDir)
 }
 
+func UploadToBucket(r io.Reader, dest string) error {
+	ctx := context.Background()
+	context := strings.SplitAfter(dest, "://")[1]
+	bucketName, item := util.GetBucketAndItem(context)
+	client, err := storage.NewClient(ctx)
+	if err != nil {
+		return err
+	}
+	bucket := client.Bucket(bucketName)
+	w := bucket.Object(item).NewWriter(ctx)
+	if _, err := io.Copy(w, r); err != nil {
+		return err
+	}
+	if err := w.Close(); err != nil {
+		return err
+	}
+	return nil
+}
+
 // unpackTarFromGCSBucket unpacks the context.tar.gz file in the given bucket to the given directory
 func unpackTarFromGCSBucket(bucketName, item, directory string) error {
 	// Get the tar from the bucket

pkg/filesystem/resolve.go

@@ -35,7 +35,6 @@ import (
 // output set.
 // * Add all ancestors of each path to the output set.
 func ResolvePaths(paths []string, wl []util.IgnoreListEntry) (pathsToAdd []string, err error) {
-	logrus.Infof("Resolving %d paths", len(paths))
 	logrus.Tracef("Resolving paths %s", paths)
 
 	fileSet := make(map[string]bool)