add common function to install go tools

Signed-off-by: RainbowMango <renhongcai@huawei.com>

hack/generate-cert.sh

@@ -15,6 +15,8 @@ CONTROLPLANE_SUDO=$(test -w "${CERT_DIR}" || echo "sudo -E")
 ROOT_CA_FILE=${CERT_DIR}/server-ca.crt
 SCRIPT_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
 
+source hack/util.sh
+
 # check whether openssl is installed.
 function ensure_openssl {
     OPENSSL_BIN=$(command -v openssl)
@@ -32,12 +34,7 @@ function ensure-cfssl {
         return 0
     fi
 
-    # Install cfssl tools we need.
-    TEMP_PATH=$(mktemp -d)
-    pushd "${TEMP_PATH}" >/dev/null
-      GO111MODULE=on go get github.com/cloudflare/cfssl/cmd/...@"${CFSSL_VERSION}"
-    popd >/dev/null
-    rm -rf "${TEMP_PATH}"
+    util::install_tools "github.com/cloudflare/cfssl/cmd/..." ${CFSSL_VERSION}
 
     GOPATH=$(go env | grep GOPATH | awk -F '=' '{print $2}'| sed 's/\"//g')
     CFSSL_BIN="${GOPATH}/bin/cfssl"

hack/update-crdgen.sh

@@ -4,13 +4,11 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-CONTROLLER_GEN_VERSION="v0.4.1"
+CONTROLLER_GEN_PKG="sigs.k8s.io/controller-tools/cmd/controller-gen"
+CONTROLLER_GEN_VER="v0.4.1"
 
-# Install tools we need.
-TEMP_PATH=$(mktemp -d)
-pushd "${TEMP_PATH}" >/dev/null
-  GO111MODULE=on go get sigs.k8s.io/controller-tools/cmd/controller-gen@"${CONTROLLER_GEN_VERSION}"
-popd >/dev/null
-rm -rf "${TEMP_PATH}"
+source hack/util.sh
+
+util::install_tools ${CONTROLLER_GEN_PKG} ${CONTROLLER_GEN_VER}
 
 controller-gen crd paths=./pkg/apis/... output:crd:dir=./artifacts/deploy

hack/util.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+# This function installs a Go tools by 'go get' command.
+# Parameters:
+#  - $1: package name, such as "sigs.k8s.io/controller-tools/cmd/controller-gen"
+#  - $2: package version, such as "v0.4.1"
+# Note:
+#   Since 'go get' command will resolve and add dependencies to current module, that may update 'go.mod' and 'go.sum' file.
+#   So we use a temporary directory to install the tools.
+function util::install_tools() {
+	local package="$1"
+	local version="$2"
+
+	temp_path=$(mktemp -d)
+	pushd "${temp_path}" >/dev/null
+	GO111MODULE=on go get "${package}"@"${version}"
+	popd >/dev/null
+	rm -rf "${temp_path}"
+}

hack/verify-staticcheck.sh

@@ -5,11 +5,13 @@ set -o nounset
 set -o pipefail
 
 REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+GOLANGCI_LINT_PKG="github.com/golangci/golangci-lint/cmd/golangci-lint"
+GOLANGCI_LINT_VER="v1.32.2"
 
-# TODO(RainbowMango): Pin golangci-lint verison to @v1.32.2
-# go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.32.2
+cd "${REPO_ROOT}"
+source "hack/util.sh"
 
-cd ${REPO_ROOT}
+util::install_tools ${GOLANGCI_LINT_PKG} ${GOLANGCI_LINT_VER}
 
 if golangci-lint run; then
   echo 'Congratulations!  All Go source files have passed staticcheck.'