move helpers.go to helper

pkg/api/methods.go

@@ -0,0 +1,46 @@
+/*
+Copyright 2017 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.
+*/
+
+//TODO: consider making these methods functions, because we don't want helper
+//functions in the k8s.io/api repo.
+
+package api
+
+import "fmt"
+
+// MatchToleration checks if the toleration matches tolerationToMatch. Tolerations are unique by <key,effect,operator,value>,
+// if the two tolerations have same <key,effect,operator,value> combination, regard as they match.
+// TODO: uniqueness check for tolerations in api validations.
+func (t *Toleration) MatchToleration(tolerationToMatch *Toleration) bool {
+	return t.Key == tolerationToMatch.Key &&
+		t.Effect == tolerationToMatch.Effect &&
+		t.Operator == tolerationToMatch.Operator &&
+		t.Value == tolerationToMatch.Value
+}
+
+// MatchTaint checks if the taint matches taintToMatch. Taints are unique by key:effect,
+// if the two taints have same key:effect, regard as they match.
+func (t *Taint) MatchTaint(taintToMatch Taint) bool {
+	return t.Key == taintToMatch.Key && t.Effect == taintToMatch.Effect
+}
+
+// taint.ToString() converts taint struct to string in format key=value:effect or key:effect.
+func (t *Taint) ToString() string {
+	if len(t.Value) == 0 {
+		return fmt.Sprintf("%v:%v", t.Key, t.Effect)
+	}
+	return fmt.Sprintf("%v=%v:%v", t.Key, t.Value, t.Effect)
+}