Change 'controller.go' filenames to more meaningfull ones

pkg/controller/certificates/certificate_controller_utils.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2016 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 certificates
+
+import certificates "k8s.io/kubernetes/pkg/apis/certificates/v1alpha1"
+
+// IsCertificateRequestApproved returns true if a certificate request has the
+// "Approved" condition and no "Denied" conditions; false otherwise.
+func IsCertificateRequestApproved(csr *certificates.CertificateSigningRequest) bool {
+	approved, denied := getCertApprovalCondition(&csr.Status)
+	return approved && !denied
+}
+
+// IsCertificateRequestDenied returns true if a certificate request has the
+// "Denied" conditions; false otherwise.
+func IsCertificateRequestDenied(csr *certificates.CertificateSigningRequest) bool {
+	_, denied := getCertApprovalCondition(&csr.Status)
+	return denied
+}
+
+func getCertApprovalCondition(status *certificates.CertificateSigningRequestStatus) (approved bool, denied bool) {
+	for _, c := range status.Conditions {
+		if c.Type == certificates.CertificateApproved {
+			approved = true
+		}
+		if c.Type == certificates.CertificateDenied {
+			denied = true
+		}
+	}
+	return
+}