2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019-2021 Nordix Foundation.
4 * Modifications Copyright (C) 2019-2020 AT&T Intellectual Property. All rights reserved.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.policy.models.pdp.concepts;
24 import java.util.List;
25 import java.util.stream.Collectors;
26 import lombok.Builder;
28 import lombok.NonNull;
29 import org.apache.commons.lang3.ObjectUtils;
30 import org.onap.policy.models.base.PfObjectFilter;
31 import org.onap.policy.models.pdp.enums.PdpState;
32 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
35 * Filter class for searches for {@link PdpGroup} instances. If any fields are null, they are ignored.
37 * @author Liam Fallon (liam.fallon@est.tech)
41 public class PdpGroupFilter implements PfObjectFilter<PdpGroup> {
46 private PdpState groupState;
49 private String pdpType;
51 // Set regular expressions on fields to match policy type names and versions
52 private List<ToscaConceptIdentifier> policyTypeList;
54 // If set, only PDP groups where policy types are matched exactly are returned
56 private boolean matchPolicyTypesExactly = false;
58 // Set regular expressions on fields to match policy names and versions
59 private List<ToscaConceptIdentifier> policyList;
61 // If set, only PDP groups where policies are matched exactly are returned
63 private boolean matchPoliciesExactly = false;
65 // If set, only PDP groups with PDPs in this state are returned
66 private PdpState pdpState;
69 public List<PdpGroup> filter(@NonNull final List<PdpGroup> originalList) {
72 return originalList.stream()
73 .filter(p -> filterString(p.getName(), name))
74 .filter(p -> groupState == null || ObjectUtils.compare(p.getPdpGroupState(), groupState) == 0)
75 .filter(p -> filterOnPdpType(p, pdpType))
76 .filter(p -> filterOnPolicyTypeList(p, policyTypeList, matchPolicyTypesExactly))
77 .filter(p -> filterOnPolicyList(p, policyList, matchPoliciesExactly))
78 .filter(p -> filterOnPdpState(p, pdpState))
79 .collect(Collectors.toList());
84 * Filter PDP groups on PDP type.
86 * @param pdpGroup the PDP group to check
87 * @param pdpType the PDP type to check for
88 * @return true if the filter should let this PDP group through
90 private boolean filterOnPdpType(final PdpGroup pdpGroup, final String pdpType) {
91 if (pdpType == null) {
95 for (PdpSubGroup pdpSubGroup : pdpGroup.getPdpSubgroups()) {
96 if (pdpSubGroup.getPdpType().equals(pdpType)) {
105 * Filter PDP groups on policy type.
107 * @param pdpGroup the PDP group to check
108 * @param typeFilter the policy type regular expressions to check for
109 * @param matchPolicyTypesExactly if true, only PDP groups where policy types are matched exactly are returned
110 * @return true if the filter should let this PDP group through
112 private boolean filterOnPolicyTypeList(final PdpGroup pdpGroup, final List<ToscaConceptIdentifier> typeFilter,
113 final boolean matchPolicyTypesExactly) {
114 if (typeFilter == null) {
118 for (PdpSubGroup pdpSubGroup : pdpGroup.getPdpSubgroups()) {
119 if (matchPolicyTypesExactly) {
120 if (areListsIdentical(pdpSubGroup.getSupportedPolicyTypes(), typeFilter)) {
123 } else if (findSupportedPolicyType(pdpSubGroup.getSupportedPolicyTypes(), typeFilter)) {
133 * Find a single supported type.
135 * @param supportedPolicyTypes supported types
136 * @param typeFilter the list of types, one of which we wish to find supported by
137 * the list we are searching
138 * @return true if one element of the elements to find is supported by an element on
139 * the list we searched
141 private boolean findSupportedPolicyType(List<ToscaConceptIdentifier> supportedPolicyTypes,
142 List<ToscaConceptIdentifier> typeFilter) {
143 for (ToscaConceptIdentifier supportedPolicyType : supportedPolicyTypes) {
144 String supName = supportedPolicyType.getName();
145 if (supName.endsWith(".*")) {
146 String substr = supName.substring(0, supName.length() - 1);
147 if (typeFilter.stream().anyMatch(type -> type.getName().startsWith(substr))) {
150 } else if (typeFilter.contains(supportedPolicyType)) {
159 * Filter PDP groups on policy.
161 * @param pdpGroup the PDP group to check
162 * @param policyFilter the policy regular expressions to check for
163 * @param matchPoliciesExactly if true, only PDP groups where ps are matched exactly are returned
164 * @return true if the filter should let this PDP group through
166 private boolean filterOnPolicyList(final PdpGroup pdpGroup, final List<ToscaConceptIdentifier> policyFilter,
167 final boolean matchPoliciesExactly) {
168 if (policyFilter == null) {
172 for (PdpSubGroup pdpSubGroup : pdpGroup.getPdpSubgroups()) {
173 if (matchPoliciesExactly) {
174 if (areListsIdentical(pdpSubGroup.getPolicies(), policyFilter)) {
177 } else if (findSingleElement(pdpSubGroup.getPolicies(), policyFilter)) {
186 * Filter PDP groups on PDP state.
188 * @param pdpGroup the PDP group to check
189 * @param policyFilter the policy regular expressions to check for
190 * @return true if the filter should let this PDP group through
192 private boolean filterOnPdpState(final PdpGroup pdpGroup, final PdpState pdpState) {
193 if (pdpState == null) {
197 for (PdpSubGroup pdpSubGroup : pdpGroup.getPdpSubgroups()) {
198 for (Pdp pdp : pdpSubGroup.getPdpInstances()) {
199 if (pdpState.equals(pdp.getPdpState())) {
209 * Check if two lists have identical content.
211 * @param leftList the left list
212 * @param rightList the right list
213 * @return true if the lists are identical
215 private <T> boolean areListsIdentical(final List<T> leftList, List<T> rightList) {
216 return leftList.equals(rightList);
220 * Find a single element of a list in a list.
222 * @param listToSearch the list in which we are searching for elements
223 * @param listOfElementsToFind the list of elements, one of which we wish to find on the list we are searching
224 * @return true if one element of the elements to find is found on the list we searched
226 private <T> boolean findSingleElement(final List<T> listToSearch, List<T> listOfElementsToFind) {
227 for (Object elementToFind : listOfElementsToFind) {
228 if (listToSearch.contains(elementToFind)) {