policy-agent/src/main/java/org/oransc/policyagent/clients/StdA1Client.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 Nordix Foundation
   6  * %%
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ========================LICENSE_END===================================
  19  */
  20
  21 package org.oransc.policyagent.clients;
  22
  23 import java.util.List;
  24 import org.oransc.policyagent.configuration.RicConfig;
  25 import org.oransc.policyagent.repository.Policy;
  26 import org.springframework.web.util.UriComponentsBuilder;
  27 import reactor.core.publisher.Flux;
  28 import reactor.core.publisher.Mono;
  29
  30 public class StdA1Client implements A1Client {
  31     private static final String URL_PREFIX = "/A1-P/v1";
  32
  33     private static final String POLICY_TYPES_URI = "/policytypes";
  34     private static final String POLICY_TYPE_ID = "policyTypeId";
  35
  36     private static final String POLICIES_URI = "/policies";
  37
  38     private static final UriComponentsBuilder POLICY_TYPE_SCHEMA_URI =
  39         UriComponentsBuilder.fromPath("/policytypes/{policy-type-name}");
  40
  41     private static final UriComponentsBuilder POLICY_URI =
  42         UriComponentsBuilder.fromPath("/policies/{policy-id}").queryParam(POLICY_TYPE_ID, "{policy-type-name}");
  43
  44     private static final UriComponentsBuilder POLICY_DELETE_URI =
  45         UriComponentsBuilder.fromPath("/policies/{policy-id}");
  46
  47     private static final UriComponentsBuilder POLICY_STATUS_URI =
  48         UriComponentsBuilder.fromPath("/policies/{policy-id}/status");
  49
  50     private final AsyncRestClient restClient;
  51
  52     public StdA1Client(RicConfig ricConfig) {
  53         String baseUrl = ricConfig.baseUrl() + URL_PREFIX;
  54         this.restClient = new AsyncRestClient(baseUrl);
  55     }
  56
  57     public StdA1Client(AsyncRestClient restClient) {
  58         this.restClient = restClient;
  59     }
  60
  61     @Override
  62     public Mono<List<String>> getPolicyIdentities() {
  63         return getPolicyIds() //
  64             .collectList();
  65     }
  66
  67     @Override
  68     public Mono<String> putPolicy(Policy policy) {
  69         String uri = POLICY_URI.buildAndExpand(policy.id(), policy.type().name()).toUriString();
  70         return restClient.put(uri, policy.json()) //
  71             .flatMap(JsonHelper::validateJson);
  72     }
  73
  74     @Override
  75     public Mono<List<String>> getPolicyTypeIdentities() {
  76         return restClient.get(POLICY_TYPES_URI) //
  77             .flatMapMany(JsonHelper::parseJsonArrayOfString) //
  78             .collectList();
  79     }
  80
  81     @Override
  82     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  83         String uri = POLICY_TYPE_SCHEMA_URI.buildAndExpand(policyTypeId).toUriString();
  84         return restClient.get(uri) //
  85             .flatMap(JsonHelper::extractPolicySchema);
  86     }
  87
  88     @Override
  89     public Mono<String> deletePolicy(Policy policy) {
  90         return deletePolicyById(policy.id());
  91     }
  92
  93     @Override
  94     public Flux<String> deleteAllPolicies() {
  95         return getPolicyIds() //
  96             .flatMap(this::deletePolicyById); //
  97     }
  98
  99     @Override
 100     public Mono<A1ProtocolType> getProtocolVersion() {
 101         return getPolicyTypeIdentities() //
 102             .flatMap(x -> Mono.just(A1ProtocolType.STD_V1));
 103     }
 104
 105     @Override
 106     public Mono<String> getPolicyStatus(Policy policy) {
 107         String uri = POLICY_STATUS_URI.buildAndExpand(policy.id()).toUriString();
 108         return restClient.get(uri);
 109     }
 110
 111     private Flux<String> getPolicyIds() {
 112         return restClient.get(POLICIES_URI) //
 113             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 114     }
 115
 116     private Mono<String> deletePolicyById(String policyId) {
 117         String uri = POLICY_DELETE_URI.buildAndExpand(policyId).toUriString();
 118         return restClient.delete(uri);
 119     }
 120 }