release-tools: update

release-tools/verify-go-version.sh

@@ -0,0 +1,51 @@
+#!/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.
+
+GO="$1"
+
+if [ ! "$GO" ]; then
+    echo >&2 "usage: $0 <path to go binary>"
+    exit 1
+fi
+
+die () {
+    echo "ERROR: $*"
+    exit 1
+}
+
+version=$("$GO" version) || die "determining version of $GO failed"
+# shellcheck disable=SC2001
+majorminor=$(echo "$version" | sed -e 's/.*go\([0-9]*\)\.\([0-9]*\).*/\1.\2/')
+# shellcheck disable=SC2001
+expected=$(grep "^ *- go:" "release-tools/travis.yml" | sed -e 's/.*go: *\([0-9]*\)\.\([0-9]*\).*/\1.\2/')
+
+if [ "$majorminor" != "$expected" ]; then
+    cat >&2 <<EOF
+
+======================================================
+                  WARNING
+
+  This projects is tested with Go v$expected.
+  Your current Go version is v$majorminor.
+  This may or may not be close enough.
+
+  In particular test-gofmt and test-vendor
+  are known to be sensitive to the version of
+  Go.
+======================================================
+
+EOF
+fi