From 5e7c88f67509a42531420dd8bae3f97beee8d26c Mon Sep 17 00:00:00 2001
From: Patrick Ohly <patrick.ohly@intel.com>
Date: Tue, 26 Jan 2021 20:49:49 +0100
Subject: [PATCH] Squashed 'release-tools/' changes from 5d874cc..1d60e77

1d60e77 Merge pull request #131 from pohly/kubernetes-1.20-tag
9f10459 prow.sh: support building Kubernetes for a specific version
fe1f284 Merge pull request #121 from kvaps/namespace-check
8fdf0f7 Merge pull request #128 from fengzixu/master
1c94220 fix: fix a bug of csi-sanity
a4c41e6 Merge pull request #127 from pohly/fix-boilerplate
ece0f50 check namespace for snapshot-controller
dbd8967 verify-boilerplate.sh: fix path to script
9289fd1 Merge pull request #125 from sachinkumarsingh092/optional-spelling-boilerplate-checks
ad29307 Make the spelling and boilerplate checks optional
5f06d02 Merge pull request #124 from sachinkumarsingh092/fix-spellcheck-boilerplate-tests
48186eb Fix spelling and boilerplate errors
71690af Merge pull request #122 from sachinkumarsingh092/include-spellcheck-boilerplate-tests
981be3f Adding spelling and boilerplate checks.
2bb7525 Merge pull request #117 from fengzixu/master
3b6d17b Merge pull request #118 from pohly/cloud-build-timeout
9318c6c cloud build: double the timeout, now 1 hour
4ab8b15 use the tag to replace commit of csi-test
5d74e45 change the csi-test import path to v4
7dcd0a9 upgrade csi-test to v4.0.2
86ff580 Merge pull request #116 from andyzhangx/export-image-name
c3a9662 allow export image name and registry name
c6a88c6 Merge pull request #113 from xing-yang/install_snapshot_controller
45ec4c6 Fix the install of snapshot CRDs and controller

git-subtree-dir: release-tools
git-subtree-split: 1d60e7792624a9938c0bd1b045211fbb89e513d6
---
 .prow.sh                               |  16 ++
 SIDECAR_RELEASE_PROCESS.md             |   2 +-
 boilerplate/boilerplate.Dockerfile.txt |  13 ++
 boilerplate/boilerplate.Makefile.txt   |  13 ++
 boilerplate/boilerplate.bzl.txt        |  13 ++
 boilerplate/boilerplate.go.txt         |  15 ++
 boilerplate/boilerplate.py             | 202 +++++++++++++++++++++++++
 boilerplate/boilerplate.py.txt         |  13 ++
 boilerplate/boilerplate.sh.txt         |  13 ++
 build.make                             |  15 +-
 cloudbuild.sh                          |  14 ++
 cloudbuild.yaml                        |   4 +-
 prow.sh                                | 131 ++++++++++++----
 verify-boilerplate.sh                  |  54 +++++++
 verify-spelling.sh                     |  59 ++++++++
 verify-subtree.sh                      |   2 +-
 16 files changed, 545 insertions(+), 34 deletions(-)
 create mode 100644 boilerplate/boilerplate.Dockerfile.txt
 create mode 100644 boilerplate/boilerplate.Makefile.txt
 create mode 100644 boilerplate/boilerplate.bzl.txt
 create mode 100644 boilerplate/boilerplate.go.txt
 create mode 100755 boilerplate/boilerplate.py
 create mode 100644 boilerplate/boilerplate.py.txt
 create mode 100644 boilerplate/boilerplate.sh.txt
 create mode 100755 verify-boilerplate.sh
 create mode 100755 verify-spelling.sh

diff --git a/.prow.sh b/.prow.sh
index b18c5358..b9267829 100755
--- a/.prow.sh
+++ b/.prow.sh
@@ -1,7 +1,23 @@
 #! /bin/bash -e
+
+# Copyright 2021 The Kubernetes 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.
+
 # This is for testing csi-release-tools itself in Prow. All other
 # repos use prow.sh for that, but as csi-release-tools isn't a normal
 # repo with some Go code in it, it has a custom Prow test script.
 
 ./verify-shellcheck.sh "$(pwd)"
+./verify-spelling.sh "$(pwd)"
+./verify-boilerplate.sh "$(pwd)"
diff --git a/SIDECAR_RELEASE_PROCESS.md b/SIDECAR_RELEASE_PROCESS.md
index 4575eb81..3aee7a81 100644
--- a/SIDECAR_RELEASE_PROCESS.md
+++ b/SIDECAR_RELEASE_PROCESS.md
@@ -11,7 +11,7 @@ The release manager must:
   kubernetes/org to request membership
 * Be a top level approver for the repository. To become a top level approver,
   the candidate must demonstrate ownership and deep knowledge of the repository
-  through active maintainence, responding to and fixing issues, reviewing PRs,
+  through active maintenance, responding to and fixing issues, reviewing PRs,
   test triage.
 * Be part of the maintainers or admin group for the repository. admin is a
   superset of maintainers, only maintainers level is required for cutting a
diff --git a/boilerplate/boilerplate.Dockerfile.txt b/boilerplate/boilerplate.Dockerfile.txt
new file mode 100644
index 00000000..34cb349c
--- /dev/null
+++ b/boilerplate/boilerplate.Dockerfile.txt
@@ -0,0 +1,13 @@
+# Copyright YEAR The Kubernetes 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.
diff --git a/boilerplate/boilerplate.Makefile.txt b/boilerplate/boilerplate.Makefile.txt
new file mode 100644
index 00000000..d0d52652
--- /dev/null
+++ b/boilerplate/boilerplate.Makefile.txt
@@ -0,0 +1,13 @@
+# Copyright YEAR The Kubernetes 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.
\ No newline at end of file
diff --git a/boilerplate/boilerplate.bzl.txt b/boilerplate/boilerplate.bzl.txt
new file mode 100644
index 00000000..d0d52652
--- /dev/null
+++ b/boilerplate/boilerplate.bzl.txt
@@ -0,0 +1,13 @@
+# Copyright YEAR The Kubernetes 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.
\ No newline at end of file
diff --git a/boilerplate/boilerplate.go.txt b/boilerplate/boilerplate.go.txt
new file mode 100644
index 00000000..3249913b
--- /dev/null
+++ b/boilerplate/boilerplate.go.txt
@@ -0,0 +1,15 @@
+/*
+Copyright YEAR The Kubernetes 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.
+*/
\ No newline at end of file
diff --git a/boilerplate/boilerplate.py b/boilerplate/boilerplate.py
new file mode 100755
index 00000000..63f74963
--- /dev/null
+++ b/boilerplate/boilerplate.py
@@ -0,0 +1,202 @@
+#!/usr/bin/env python
+
+# Copyright 2019 The Kubernetes 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.
+
+from __future__ import print_function
+
+import argparse
+import difflib
+import glob
+import json
+import mmap
+import os
+import re
+import sys
+from datetime import date
+
+parser = argparse.ArgumentParser()
+parser.add_argument(
+    "filenames",
+    help="list of files to check, all files if unspecified",
+    nargs='*')
+
+# Rootdir defaults to the directory **above** the repo-infra dir.
+rootdir = os.path.dirname(__file__) + "./../../../"
+rootdir = os.path.abspath(rootdir)
+parser.add_argument(
+    "--rootdir", default=rootdir, help="root directory to examine")
+
+default_boilerplate_dir = os.path.join(rootdir, "csi-driver-nfs/hack/boilerplate")
+
+parser.add_argument(
+    "--boilerplate-dir", default=default_boilerplate_dir)
+
+parser.add_argument(
+    "-v", "--verbose",
+    help="give verbose output regarding why a file does not pass",
+    action="store_true")
+
+args = parser.parse_args()
+
+verbose_out = sys.stderr if args.verbose else open("/dev/null", "w")
+
+def get_refs():
+    refs = {}
+
+    for path in glob.glob(os.path.join(args.boilerplate_dir, "boilerplate.*.txt")):
+        extension = os.path.basename(path).split(".")[1]
+
+        ref_file = open(path, 'r')
+        ref = ref_file.read().splitlines()
+        ref_file.close()
+        refs[extension] = ref
+
+    return refs
+
+def file_passes(filename, refs, regexs):
+    try:
+        f = open(filename, 'r')
+    except Exception as exc:
+        print("Unable to open %s: %s" % (filename, exc), file=verbose_out)
+        return False
+
+    data = f.read()
+    f.close()
+
+    basename = os.path.basename(filename)
+    extension = file_extension(filename)
+    if extension != "":
+        ref = refs[extension]
+    else:
+        ref = refs[basename]
+
+    # remove build tags from the top of Go files
+    if extension == "go":
+        p = regexs["go_build_constraints"]
+        (data, found) = p.subn("", data, 1)
+
+    # remove shebang from the top of shell files
+    if extension == "sh" or extension == "py":
+        p = regexs["shebang"]
+        (data, found) = p.subn("", data, 1)
+
+    data = data.splitlines()
+
+    # if our test file is smaller than the reference it surely fails!
+    if len(ref) > len(data):
+        print('File %s smaller than reference (%d < %d)' %
+              (filename, len(data), len(ref)),
+              file=verbose_out)
+        return False
+
+    # trim our file to the same number of lines as the reference file
+    data = data[:len(ref)]
+
+    p = regexs["year"]
+    for d in data:
+        if p.search(d):
+            print('File %s is missing the year' % filename, file=verbose_out)
+            return False
+
+    # Replace all occurrences of the regex "CURRENT_YEAR|...|2016|2015|2014" with "YEAR"
+    p = regexs["date"]
+    for i, d in enumerate(data):
+        (data[i], found) = p.subn('YEAR', d)
+        if found != 0:
+            break
+
+    # if we don't match the reference at this point, fail
+    if ref != data:
+        print("Header in %s does not match reference, diff:" % filename, file=verbose_out)
+        if args.verbose:
+            print(file=verbose_out)
+            for line in difflib.unified_diff(ref, data, 'reference', filename, lineterm=''):
+                print(line, file=verbose_out)
+            print(file=verbose_out)
+        return False
+
+    return True
+
+def file_extension(filename):
+    return os.path.splitext(filename)[1].split(".")[-1].lower()
+
+skipped_dirs = ['Godeps', 'third_party', '_gopath', '_output', '.git',
+                'cluster/env.sh', 'vendor', 'test/e2e/generated/bindata.go',
+                'repo-infra/verify/boilerplate/test', '.glide']
+
+def normalize_files(files):
+    newfiles = []
+    for pathname in files:
+        if any(x in pathname for x in skipped_dirs):
+            continue
+        newfiles.append(pathname)
+    return newfiles
+
+def get_files(extensions):
+    files = []
+    if len(args.filenames) > 0:
+        files = args.filenames
+    else:
+        for root, dirs, walkfiles in os.walk(args.rootdir):
+            # don't visit certain dirs. This is just a performance improvement
+            # as we would prune these later in normalize_files(). But doing it
+            # cuts down the amount of filesystem walking we do and cuts down
+            # the size of the file list
+            for d in skipped_dirs:
+                if d in dirs:
+                    dirs.remove(d)
+
+            for name in walkfiles:
+                pathname = os.path.join(root, name)
+                files.append(pathname)
+
+    files = normalize_files(files)
+
+    outfiles = []
+    for pathname in files:
+        basename = os.path.basename(pathname)
+        extension = file_extension(pathname)
+        if extension in extensions or basename in extensions:
+            outfiles.append(pathname)
+    return outfiles
+
+def get_regexs():
+    regexs = {}
+    # Search for "YEAR" which exists in the boilerplate, but shouldn't in the real thing
+    regexs["year"] = re.compile( 'YEAR' )
+    # dates can be 2014, 2015, 2016, ..., CURRENT_YEAR, company holder names can be anything
+    years = range(2014, date.today().year + 1)
+    regexs["date"] = re.compile( '(%s)' % "|".join(map(lambda l: str(l), years)) )
+    # strip // +build \n\n build constraints
+    regexs["go_build_constraints"] = re.compile(r"^(// \+build.*\n)+\n", re.MULTILINE)
+    # strip #!.* from shell scripts
+    regexs["shebang"] = re.compile(r"^(#!.*\n)\n*", re.MULTILINE)
+    return regexs
+
+
+
+def main():
+    regexs = get_regexs()
+    refs = get_refs()
+    filenames = get_files(refs.keys())
+
+    for filename in filenames:
+        if not file_passes(filename, refs, regexs):
+            print(filename, file=sys.stdout)
+
+    return 0
+
+if __name__ == "__main__":
+    sys.exit(main())
\ No newline at end of file
diff --git a/boilerplate/boilerplate.py.txt b/boilerplate/boilerplate.py.txt
new file mode 100644
index 00000000..34cb349c
--- /dev/null
+++ b/boilerplate/boilerplate.py.txt
@@ -0,0 +1,13 @@
+# Copyright YEAR The Kubernetes 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.
diff --git a/boilerplate/boilerplate.sh.txt b/boilerplate/boilerplate.sh.txt
new file mode 100644
index 00000000..d0d52652
--- /dev/null
+++ b/boilerplate/boilerplate.sh.txt
@@ -0,0 +1,13 @@
+# Copyright YEAR The Kubernetes 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.
\ No newline at end of file
diff --git a/build.make b/build.make
index 516dc12d..9b8306c0 100644
--- a/build.make
+++ b/build.make
@@ -20,7 +20,7 @@
 
 # This is the default. It can be overridden in the main Makefile after
 # including build.make.
-REGISTRY_NAME=quay.io/k8scsi
+REGISTRY_NAME?=quay.io/k8scsi
 
 # Can be set to -mod=vendor to ensure that the "vendor" directory is used.
 GOFLAGS_VENDOR=
@@ -275,3 +275,16 @@ test-shellcheck:
 .PHONY: check-go-version-%
 check-go-version-%:
 	./release-tools/verify-go-version.sh "$*"
+
+# Test for spelling errors.
+.PHONY: test-spelling
+test-spelling:
+	@ echo; echo "### $@:"
+	@ ./release-tools/verify-spelling.sh "$(pwd)"
+
+# Test the boilerplates of the files.
+.PHONY: test-boilerplate
+test-boilerplate:
+	@ echo; echo "### $@:"
+	@ ./release-tools/verify-boilerplate.sh "$(pwd)"
+
diff --git a/cloudbuild.sh b/cloudbuild.sh
index 3ba11eca..1edda4d3 100755
--- a/cloudbuild.sh
+++ b/cloudbuild.sh
@@ -1,5 +1,19 @@
 #! /bin/bash
 
+# Copyright 2021 The Kubernetes 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.
+
 # shellcheck disable=SC1091
 . release-tools/prow.sh
 
diff --git a/cloudbuild.yaml b/cloudbuild.yaml
index 8f678924..7f0a4341 100644
--- a/cloudbuild.yaml
+++ b/cloudbuild.yaml
@@ -16,7 +16,9 @@
 # To promote release images, see https://github.com/kubernetes/k8s.io/tree/master/k8s.gcr.io/images/k8s-staging-sig-storage.
 
 # This must be specified in seconds. If omitted, defaults to 600s (10 mins).
-timeout: 1800s
+# Building three images in external-snapshotter takes roughly half an hour,
+# sometimes more.
+timeout: 3600s
 # This prevents errors if you don't use both _GIT_TAG and _PULL_BASE_REF,
 # or any new substitutions added in the future.
 options:
diff --git a/prow.sh b/prow.sh
index 75eedbdb..d4300550 100755
--- a/prow.sh
+++ b/prow.sh
@@ -1,5 +1,5 @@
 #! /bin/bash
-#
+
 # Copyright 2019 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -65,6 +65,18 @@ get_versioned_variable () {
     echo "$value"
 }
 
+# This takes a version string like CSI_PROW_KUBERNETES_VERSION and
+# maps it to the corresponding git tag, branch or commit.
+version_to_git () {
+    version="$1"
+    shift
+    case "$version" in
+        latest) echo "master";;
+        release-*) echo "$version";;
+        *) echo "v$version";;
+    esac
+}
+
 configvar CSI_PROW_BUILD_PLATFORMS "linux amd64; windows amd64 .exe; linux ppc64le -ppc64le; linux s390x -s390x; linux arm64 -arm64" "Go target platforms (= GOOS + GOARCH) and file suffix of the resulting binaries"
 
 # If we have a vendor directory, then use it. We must be careful to only
@@ -73,7 +85,7 @@ configvar CSI_PROW_BUILD_PLATFORMS "linux amd64; windows amd64 .exe; linux ppc64
 # which is disabled with GOFLAGS=-mod=vendor).
 configvar GOFLAGS_VENDOR "$( [ -d vendor ] && echo '-mod=vendor' )" "Go flags for using the vendor directory"
 
-# Go versions can be specified seperately for different tasks
+# Go versions can be specified separately for different tasks
 # If the pre-installed Go is missing or a different
 # version, the required version here will get installed
 # from https://golang.org/dl/.
@@ -208,16 +220,7 @@ configvar CSI_PROW_DRIVER_CANARY_REGISTRY "gcr.io/k8s-staging-sig-storage" "regi
 # all generated files are present.
 #
 # CSI_PROW_E2E_REPO=none disables E2E testing.
-tag_from_version () {
-    version="$1"
-    shift
-    case "$version" in
-        latest) echo "master";;
-        release-*) echo "$version";;
-        *) echo "v$version";;
-    esac
-}
-configvar CSI_PROW_E2E_VERSION "$(tag_from_version "${CSI_PROW_KUBERNETES_VERSION}")"  "E2E version"
+configvar CSI_PROW_E2E_VERSION "$(version_to_git "${CSI_PROW_KUBERNETES_VERSION}")"  "E2E version"
 configvar CSI_PROW_E2E_REPO "https://github.com/kubernetes/kubernetes" "E2E repo"
 configvar CSI_PROW_E2E_IMPORT_PATH "k8s.io/kubernetes" "E2E package"
 
@@ -227,8 +230,8 @@ configvar CSI_PROW_E2E_IMPORT_PATH "k8s.io/kubernetes" "E2E package"
 # of the cluster. The alternative would have been to (cross-)compile csi-sanity
 # and install it inside the cluster, which is not necessarily easier.
 configvar CSI_PROW_SANITY_REPO https://github.com/kubernetes-csi/csi-test "csi-test repo"
-configvar CSI_PROW_SANITY_VERSION 5421d9f3c37be3b95b241b44a094a3db11bee789 "csi-test version" # latest master
-configvar CSI_PROW_SANITY_IMPORT_PATH github.com/kubernetes-csi/csi-test "csi-test package"
+configvar CSI_PROW_SANITY_VERSION v4.0.2 "csi-test version" # v4.0.2
+configvar CSI_PROW_SANITY_PACKAGE_PATH github.com/kubernetes-csi/csi-test "csi-test package"
 configvar CSI_PROW_SANITY_SERVICE "hostpath-service" "Kubernetes TCP service name that exposes csi.sock"
 configvar CSI_PROW_SANITY_POD "csi-hostpathplugin-0" "Kubernetes pod with CSI driver"
 configvar CSI_PROW_SANITY_CONTAINER "hostpath" "Kubernetes container with CSI driver"
@@ -293,7 +296,7 @@ configvar CSI_PROW_E2E_FOCUS_LATEST '\[Feature:VolumeSnapshotDataSource\]' "non-
 configvar CSI_PROW_E2E_FOCUS "$(get_versioned_variable CSI_PROW_E2E_FOCUS "${csi_prow_kubernetes_version_suffix}")" "non-alpha, feature-tagged tests"
 
 # Serial vs. parallel is always determined by these regular expressions.
-# Individual regular expressions are seperated by spaces for readability
+# Individual regular expressions are separated by spaces for readability
 # and expected to not contain spaces. Use dots instead. The complete
 # regex for Ginkgo will be created by joining the individual terms.
 configvar CSI_PROW_E2E_SERIAL '\[Serial\] \[Disruptive\]' "tags for serial E2E tests"
@@ -465,20 +468,22 @@ git_checkout () {
 
 # This clones a repo ("https://github.com/kubernetes/kubernetes")
 # in a certain location ("$GOPATH/src/k8s.io/kubernetes") at
-# a the head of a specific branch (i.e., release-1.13, master).
-# The directory cannot exist.
-git_clone_branch () {
-    local repo path branch parent
+# a the head of a specific branch (i.e., release-1.13, master),
+# tag (v1.20.0) or commit.
+#
+# The directory must not exist.
+git_clone () {
+    local repo path name parent
     repo="$1"
     shift
     path="$1"
     shift
-    branch="$1"
+    name="$1"
     shift
 
     parent="$(dirname "$path")"
     mkdir -p "$parent"
-    (cd "$parent" && run git clone --single-branch --branch "$branch" "$repo" "$path") || die "cloning $repo" failed
+    (cd "$parent" && run git clone --single-branch --branch "$name" "$repo" "$path") || die "cloning $repo" failed
     # This is useful for local testing or when switching between different revisions in the same
     # repo.
     (cd "$path" && run git clean -fdx) || die "failed to clean $path"
@@ -567,7 +572,7 @@ start_cluster () {
             else
                 type="docker"
             fi
-            git_clone_branch https://github.com/kubernetes/kubernetes "${CSI_PROW_WORK}/src/kubernetes" "$version" || die "checking out Kubernetes $version failed"
+            git_clone https://github.com/kubernetes/kubernetes "${CSI_PROW_WORK}/src/kubernetes" "$(version_to_git "$version")" || die "checking out Kubernetes $version failed"
 
             go_version="$(go_version_for_kubernetes "${CSI_PROW_WORK}/src/kubernetes" "$version")" || die "cannot proceed without knowing Go version for Kubernetes"
             # Changing into the Kubernetes source code directory is a workaround for https://github.com/kubernetes-sigs/kind/issues/1910
@@ -700,6 +705,10 @@ install_csi_driver () {
 install_snapshot_crds() {
   # Wait until volumesnapshot CRDs are in place.
   CRD_BASE_DIR="https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${CSI_SNAPSHOTTER_VERSION}/client/config/crd"
+  if [[ ${REPO_DIR} == *"external-snapshotter"* ]]; then
+      CRD_BASE_DIR="${REPO_DIR}/client/config/crd"
+  fi
+  echo "Installing snapshot CRDs from ${CRD_BASE_DIR}"
   kubectl apply -f "${CRD_BASE_DIR}/snapshot.storage.k8s.io_volumesnapshotclasses.yaml" --validate=false
   kubectl apply -f "${CRD_BASE_DIR}/snapshot.storage.k8s.io_volumesnapshots.yaml" --validate=false
   kubectl apply -f "${CRD_BASE_DIR}/snapshot.storage.k8s.io_volumesnapshotcontents.yaml" --validate=false
@@ -719,7 +728,16 @@ install_snapshot_crds() {
 
 # Install snapshot controller and associated RBAC, retrying until the pod is running.
 install_snapshot_controller() {
-  kubectl apply -f "https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${CSI_SNAPSHOTTER_VERSION}/deploy/kubernetes/snapshot-controller/rbac-snapshot-controller.yaml"
+  CONTROLLER_DIR="https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${CSI_SNAPSHOTTER_VERSION}"
+  if [[ ${REPO_DIR} == *"external-snapshotter"* ]]; then
+      CONTROLLER_DIR="${REPO_DIR}"
+  fi
+  SNAPSHOT_RBAC_YAML="${CONTROLLER_DIR}/deploy/kubernetes/snapshot-controller/rbac-snapshot-controller.yaml"
+  echo "kubectl apply -f ${SNAPSHOT_RBAC_YAML}"
+  # Ignore: Double quote to prevent globbing and word splitting.
+  # shellcheck disable=SC2086
+  kubectl apply -f ${SNAPSHOT_RBAC_YAML}
+
   cnt=0
   until kubectl get clusterrolebinding snapshot-controller-role; do
      if [ $cnt -gt 30 ]; then
@@ -733,14 +751,67 @@ install_snapshot_controller() {
     sleep 10   
   done
 
+  SNAPSHOT_CONTROLLER_YAML="${CONTROLLER_DIR}/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml"
+  if [[ ${REPO_DIR} == *"external-snapshotter"* ]]; then
+      # snapshot-controller image built from the PR will get a "csiprow" tag.
+      # Load it into the "kind" cluster so that we can deploy it.
+      NEW_TAG="csiprow"
+      NEW_IMG="snapshot-controller:${NEW_TAG}"
+      echo "kind load docker-image --name csi-prow ${NEW_IMG}"
+      kind load docker-image --name csi-prow ${NEW_IMG} || die "could not load the snapshot-controller:csiprow image into the kind cluster"
+
+      # deploy snapshot-controller
+      echo "Deploying snapshot-controller"
+      # Replace image in SNAPSHOT_CONTROLLER_YAML with snapshot-controller:csiprow and deploy
+      # NOTE: This logic is similar to the logic here:
+      # https://github.com/kubernetes-csi/csi-driver-host-path/blob/v1.4.0/deploy/util/deploy-hostpath.sh#L155
+      # Ignore: Double quote to prevent globbing and word splitting.
+      # shellcheck disable=SC2086
+      # Ignore: Use find instead of ls to better handle non-alphanumeric filenames.
+      # shellcheck disable=SC2012
+      for i in $(ls ${SNAPSHOT_CONTROLLER_YAML} | sort); do
+          echo "   $i"
+          # Ignore: Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+          # shellcheck disable=SC2002
+          # Ignore: See if you can use ${variable//search/replace} instead.
+          # shellcheck disable=SC2001
+          modified="$(cat "$i" | while IFS= read -r line; do
+              nocomments="$(echo "$line" | sed -e 's/ *#.*$//')"
+              if echo "$nocomments" | grep -q '^[[:space:]]*image:[[:space:]]*'; then
+                  # Split 'image: k8s.gcr.io/sig-storage/snapshot-controller:v3.0.0'
+                  # into image (snapshot-controller:v3.0.0),
+                  # name (snapshot-controller),
+                  # tag (v3.0.0).
+                  image=$(echo "$nocomments" | sed -e 's;.*image:[[:space:]]*;;')
+                  name=$(echo "$image" | sed -e 's;.*/\([^:]*\).*;\1;')
+                  tag=$(echo "$image" | sed -e 's;.*:;;')
+
+                  # Now replace registry and/or tag
+                  NEW_TAG="csiprow"
+                  line="$(echo "$nocomments" | sed -e "s;$image;${name}:${NEW_TAG};")"
+	          echo "        using $line" >&2
+              fi
+              echo "$line"
+          done)"
+          if ! echo "$modified" | kubectl apply -f -; then
+              echo "modified version of $i:"
+              echo "$modified"
+              exit 1
+          fi
+	  echo "kubectl apply -f ${SNAPSHOT_CONTROLLER_YAML}(modified)"
+      done
+  else
+      echo "kubectl apply -f $SNAPSHOT_CONTROLLER_YAML"
+      kubectl apply -f "$SNAPSHOT_CONTROLLER_YAML"
+  fi
 
-  kubectl apply -f "https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${CSI_SNAPSHOTTER_VERSION}/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml"
   cnt=0
-  expected_running_pods=$(curl https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/"${CSI_SNAPSHOTTER_VERSION}"/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml | grep replicas | cut -d ':' -f 2-)
-  while [ "$(kubectl get pods -l app=snapshot-controller | grep 'Running' -c)" -lt "$expected_running_pods" ]; do
+  expected_running_pods=$(kubectl apply --dry-run=client -o "jsonpath={.spec.replicas}" -f "$SNAPSHOT_CONTROLLER_YAML")
+  expected_namespace=$(kubectl apply --dry-run=client -o "jsonpath={.metadata.namespace}" -f "$SNAPSHOT_CONTROLLER_YAML")
+  while [ "$(kubectl get pods -n "$expected_namespace" -l app=snapshot-controller | grep 'Running' -c)" -lt "$expected_running_pods" ]; do
     if [ $cnt -gt 30 ]; then
         echo "snapshot-controller pod status:"
-        kubectl describe pods -l app=snapshot-controller
+        kubectl describe pods -n "$expected_namespace" -l app=snapshot-controller
         echo >&2 "ERROR: snapshot controller not ready after over 5 min"
         exit 1
     fi
@@ -814,8 +885,8 @@ install_sanity () (
         return
     fi
 
-    git_checkout "${CSI_PROW_SANITY_REPO}" "${GOPATH}/src/${CSI_PROW_SANITY_IMPORT_PATH}" "${CSI_PROW_SANITY_VERSION}" --depth=1 || die "checking out csi-sanity failed"
-    run_with_go "${CSI_PROW_GO_VERSION_SANITY}" go test -c -o "${CSI_PROW_WORK}/csi-sanity" "${CSI_PROW_SANITY_IMPORT_PATH}/cmd/csi-sanity" || die "building csi-sanity failed"
+    git_checkout "${CSI_PROW_SANITY_REPO}" "${GOPATH}/src/${CSI_PROW_SANITY_PACKAGE_PATH}" "${CSI_PROW_SANITY_VERSION}" --depth=1 || die "checking out csi-sanity failed"
+    ( cd "${GOPATH}/src/${CSI_PROW_SANITY_PACKAGE_PATH}/cmd/csi-sanity" && run_with_go "${CSI_PROW_GO_VERSION_SANITY}" go build -o "${CSI_PROW_WORK}/csi-sanity" ) || die "building csi-sanity failed"
 )
 
 # Captures pod output while running some other command.
@@ -933,7 +1004,7 @@ make_test_to_junit () {
         echo "$line" # pass through
         if echo "$line" | grep -q "^### [^ ]*:$"; then
             if [ "$testname" ]; then
-                # previous test succesful
+                # previous test successful
                 echo "    </system-out>" >>"$out"
                 echo "  </testcase>" >>"$out"
             fi
diff --git a/verify-boilerplate.sh b/verify-boilerplate.sh
new file mode 100755
index 00000000..81593957
--- /dev/null
+++ b/verify-boilerplate.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+# Copyright 2014 The Kubernetes 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+echo "Verifying boilerplate"
+
+if [[ -z "$(command -v python)" ]]; then
+  echo "Cannot find python. Make link to python3..."
+  update-alternatives --install /usr/bin/python python /usr/bin/python3 1
+fi
+
+# The csi-release-tools directory (absolute path).
+TOOLS="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+
+# Directory to check. Default is the parent of the tools themselves.
+ROOT="${1:-${TOOLS}/..}"
+
+boiler="${TOOLS}/boilerplate/boilerplate.py"
+
+mapfile -t files_need_boilerplate < <("${boiler}" --rootdir="${ROOT}" --verbose)
+
+# Run boilerplate.py unit tests
+unitTestOut="$(mktemp)"
+trap cleanup EXIT
+cleanup() {
+	rm "${unitTestOut}"
+}
+
+# Run boilerplate check
+if [[ ${#files_need_boilerplate[@]} -gt 0 ]]; then
+  for file in "${files_need_boilerplate[@]}"; do
+    echo "Boilerplate header is wrong for: ${file}"
+  done
+
+  exit 1
+fi
+
+echo "Done"
diff --git a/verify-spelling.sh b/verify-spelling.sh
new file mode 100755
index 00000000..4aeb34d6
--- /dev/null
+++ b/verify-spelling.sh
@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+# Copyright 2019 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+TOOL_VERSION="v0.3.4"
+
+# The csi-release-tools directory (absolute path).
+TOOLS="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+
+# Directory to check. Default is the parent of the tools themselves.
+ROOT="${1:-${TOOLS}/..}"
+
+# create a temporary directory
+TMP_DIR=$(mktemp -d)
+
+# cleanup
+exitHandler() (
+  echo "Cleaning up..."
+  rm -rf "${TMP_DIR}"
+)
+trap exitHandler EXIT
+
+if [[ -z "$(command -v misspell)" ]]; then
+  echo "Cannot find misspell. Installing misspell..."
+  # perform go get in a temp dir as we are not tracking this version in a go module
+  # if we do the go get in the repo, it will create / update a go.mod and go.sum
+  cd "${TMP_DIR}"
+  GO111MODULE=on GOBIN="${TMP_DIR}" go get "github.com/client9/misspell/cmd/misspell@${TOOL_VERSION}"
+  export PATH="${TMP_DIR}:${PATH}"
+fi
+
+# check spelling
+RES=0
+echo "Checking spelling..."
+ERROR_LOG="${TMP_DIR}/errors.log"
+cd "${ROOT}"
+git ls-files | grep -v vendor | xargs misspell > "${ERROR_LOG}"
+if [[ -s "${ERROR_LOG}" ]]; then
+  sed 's/^/error: /' "${ERROR_LOG}" # add 'error' to each line to highlight in e2e status
+  echo "Found spelling errors!"
+  RES=1
+fi
+exit "${RES}"
diff --git a/verify-subtree.sh b/verify-subtree.sh
index f04a9fa2..aa72194a 100755
--- a/verify-subtree.sh
+++ b/verify-subtree.sh
@@ -1,5 +1,5 @@
 #! /bin/sh -e
-#
+
 # Copyright 2019 The Kubernetes Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");