2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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=========================================================
21 package org.onap.policy.controlloop.actor.appc;
23 import java.util.List;
25 import java.util.Map.Entry;
26 import java.util.UUID;
27 import java.util.concurrent.CompletableFuture;
28 import org.onap.policy.appc.CommonHeader;
29 import org.onap.policy.appc.Request;
30 import org.onap.policy.appc.Response;
31 import org.onap.policy.appc.ResponseCode;
32 import org.onap.policy.common.utils.coder.Coder;
33 import org.onap.policy.common.utils.coder.CoderException;
34 import org.onap.policy.common.utils.coder.StandardCoder;
35 import org.onap.policy.common.utils.coder.StandardCoderInstantAsMillis;
36 import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
37 import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperation;
38 import org.onap.policy.controlloop.actorserviceprovider.parameters.BidirectionalTopicConfig;
39 import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
40 import org.onap.policy.controlloop.actorserviceprovider.topic.SelectorKey;
41 import org.onap.policy.controlloop.policy.PolicyResult;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
46 * Superclass for APPC Operations.
48 public abstract class AppcOperation extends BidirectionalTopicOperation<Request, Response> {
49 private static final Logger logger = LoggerFactory.getLogger(AppcOperation.class);
50 private static final StandardCoder coder = new StandardCoderInstantAsMillis();
51 public static final String VNF_ID_KEY = "generic-vnf.vnf-id";
54 * Keys used to match the response with the request listener. The sub request ID is a
55 * UUID, so it can be used to uniquely identify the response.
57 * Note: if these change, then {@link #getExpectedKeyValues(int, Request)} must be
58 * updated accordingly.
60 public static final List<SelectorKey> SELECTOR_KEYS = List.of(new SelectorKey("CommonHeader", "SubRequestID"));
63 * Constructs the object.
65 * @param params operation parameters
66 * @param config configuration for this operation
68 public AppcOperation(ControlLoopOperationParams params, BidirectionalTopicConfig config) {
69 super(params, config, Response.class);
76 protected CompletableFuture<OperationOutcome> startPreprocessorAsync() {
77 return startGuardAsync();
81 * Makes a request, given the target VNF. This is a support function for
82 * {@link #makeRequest(int)}.
84 * @param attempt attempt number
85 * @param targetVnf target VNF
86 * @return a new request
88 protected Request makeRequest(int attempt, String targetVnf) {
89 Request request = new Request();
90 request.setCommonHeader(new CommonHeader());
91 request.getCommonHeader().setRequestId(params.getRequestId());
93 // TODO ok to use UUID, or does it have to be the "attempt"?
94 request.getCommonHeader().setSubRequestId(UUID.randomUUID().toString());
96 request.setAction(getName());
98 // convert payload strings to objects
99 if (params.getPayload() == null) {
100 logger.info("{}: no payload specified for {}", getFullName(), params.getRequestId());
102 convertPayload(params.getPayload(), request.getPayload());
105 // add/replace specific values
106 request.getPayload().put(VNF_ID_KEY, targetVnf);
112 * Converts a payload. The original value is assumed to be a JSON string, which is
113 * decoded into an object.
115 * @param source source from which to get the values
116 * @param target where to place the decoded values
118 private static void convertPayload(Map<String, Object> source, Map<String, Object> target) {
119 for (Entry<String, Object> ent : source.entrySet()) {
120 Object value = ent.getValue();
122 target.put(ent.getKey(), null);
127 target.put(ent.getKey(), coder.decode(value.toString(), Object.class));
129 } catch (CoderException e) {
130 logger.warn("cannot decode JSON value {}: {}", ent.getKey(), ent.getValue(), e);
136 * Note: these values must match {@link #SELECTOR_KEYS}.
139 protected List<String> getExpectedKeyValues(int attempt, Request request) {
140 return List.of(request.getCommonHeader().getSubRequestId());
144 protected Status detmStatus(String rawResponse, Response response) {
145 if (response.getStatus() == null) {
146 throw new IllegalArgumentException("APP-C response is missing the response status");
149 ResponseCode code = ResponseCode.toResponseCode(response.getStatus().getCode());
151 throw new IllegalArgumentException(
152 "unknown APPC-C response status code: " + response.getStatus().getCode());
157 return Status.SUCCESS;
159 return Status.FAILURE;
162 throw new IllegalArgumentException("APP-C request was not accepted, code=" + code);
165 // awaiting a "final" response
166 return Status.STILL_WAITING;
171 * Sets the message to the status description, if available.
174 public OperationOutcome setOutcome(OperationOutcome outcome, PolicyResult result, Response response) {
175 if (response.getStatus() == null || response.getStatus().getDescription() == null) {
176 return setOutcome(outcome, result);
179 outcome.setResult(result);
180 outcome.setMessage(response.getStatus().getDescription());
185 protected Coder makeCoder() {