| /******************************************************************************* |
| * Copyright 2017 General Electric Company |
| * |
| * 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. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| *******************************************************************************/ |
| |
| package com.ge.predix.acs.service.policy.evaluation; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import com.ge.predix.acs.attribute.readers.SubjectAttributeReader; |
| import com.ge.predix.acs.model.Attribute; |
| |
| public class SubjectAttributeResolver { |
| |
| private final Map<String, Set<Attribute>> subjectAttributeMap = new HashMap<>(); |
| private final SubjectAttributeReader subjectAttributeReader; |
| private final String subjectIdentifier; |
| private final Set<Attribute> supplementalSubjectAttributes; |
| |
| public SubjectAttributeResolver(final SubjectAttributeReader subjectAttributeReader, final String subjectIdentifier, |
| final Set<Attribute> supplementalSubjectAttributes) { |
| this.subjectAttributeReader = subjectAttributeReader; |
| this.subjectIdentifier = subjectIdentifier; |
| if (null == supplementalSubjectAttributes) { |
| this.supplementalSubjectAttributes = Collections.emptySet(); |
| } else { |
| this.supplementalSubjectAttributes = supplementalSubjectAttributes; |
| } |
| } |
| |
| public Set<Attribute> getResult(final Set<Attribute> scopes) { |
| Set<Attribute> subjectAttributes = this.subjectAttributeMap.get(this.subjectIdentifier); |
| if (null == subjectAttributes) { |
| subjectAttributes = new HashSet<>( |
| this.subjectAttributeReader.getAttributesByScope(this.subjectIdentifier, scopes)); |
| subjectAttributes.addAll(this.supplementalSubjectAttributes); |
| this.subjectAttributeMap.put(this.subjectIdentifier, subjectAttributes); |
| } |
| return subjectAttributes; |
| } |
| |
| } |