Added the first predicate as a filter plugin: PodToleratesNodeTaints.

pkg/scheduler/framework/plugins/migration/utils.go

@@ -0,0 +1,49 @@
+/*
+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.
+*/
+
+package migration
+
+import (
+	"k8s.io/kubernetes/pkg/scheduler/algorithm/predicates"
+	framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
+)
+
+// PredicateResultToFrameworkStatus converts a predicate result (PredicateFailureReason + error)
+// to a framework status.
+func PredicateResultToFrameworkStatus(reasons []predicates.PredicateFailureReason, err error) *framework.Status {
+	if s := ErrorToFrameworkStatus(err); s != nil {
+		return s
+	}
+
+	if len(reasons) == 0 {
+		return nil
+	}
+
+	if r := predicates.UnresolvablePredicateExists(reasons); r != nil {
+		return framework.NewStatus(framework.UnschedulableAndUnresolvable, r.GetReason())
+	}
+
+	// We will just use the first reason.
+	return framework.NewStatus(framework.Unschedulable, reasons[0].GetReason())
+}
+
+// ErrorToFrameworkStatus converts an error to a framework status.
+func ErrorToFrameworkStatus(err error) *framework.Status {
+	if err != nil {
+		return framework.NewStatus(framework.Error, err.Error())
+	}
+	return nil
+}