suppress dirty logs during import libraries (#1991)

Co-authored-by: Yin Da <yd219913@alibaba-inc.com>

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/aryann/difflib v0.0.0-20210328193216-ff5ff6dc229b
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869
 	github.com/briandowns/spinner v1.11.1
+	github.com/containerd/containerd v1.3.2
 	github.com/coreos/prometheus-operator v0.41.1
 	github.com/crossplane/crossplane-runtime v0.10.0
 	github.com/davecgh/go-spew v1.1.1

references/a/preimport/preimport.go

@@ -0,0 +1,42 @@
+/*
+ Copyright 2021. The KubeVela 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.
+*/
+
+package preimport
+
+import (
+	"flag"
+
+	"github.com/containerd/containerd/log"
+	"k8s.io/klog"
+)
+
+var _flagSet *flag.FlagSet
+
+// disable logging during import
+func init() {
+	lvl, _ := log.ParseLevel("panic")
+	log.L.Logger.SetLevel(lvl)
+	_flagSet = flag.CommandLine
+	klog.InitFlags(_flagSet)
+	_ = _flagSet.Set("v", "-1")
+}
+
+// Start recover logging
+func Start() {
+	lvl, _ := log.ParseLevel("info")
+	log.L.Logger.SetLevel(lvl)
+	_ = _flagSet.Set("v", "0")
+}

references/cmd/cli/main.go

@@ -21,10 +21,12 @@ import (
 	"os"
 	"time"
 
+	"github.com/oam-dev/kubevela/references/a/preimport"
 	"github.com/oam-dev/kubevela/references/cli"
 )
 
 func main() {
+	preimport.Start()
 	rand.Seed(time.Now().UnixNano())
 
 	command := cli.NewCommand()