2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2020-2021 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.drools.apps.controller.usecases;
23 import static org.onap.policy.controlloop.ControlLoopTargetType.PNF;
24 import static org.onap.policy.controlloop.ControlLoopTargetType.VM;
25 import static org.onap.policy.controlloop.ControlLoopTargetType.VNF;
26 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.GENERIC_VNF_IS_CLOSED_LOOP_DISABLED;
27 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.GENERIC_VNF_PROV_STATUS;
28 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.GENERIC_VNF_VNF_ID;
29 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.GENERIC_VNF_VNF_NAME;
30 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.PNF_IS_IN_MAINT;
31 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.PNF_NAME;
32 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.PROV_STATUS_ACTIVE;
33 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.VM_NAME;
34 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.VNF_NAME;
35 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.VSERVER_IS_CLOSED_LOOP_DISABLED;
36 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.VSERVER_PROV_STATUS;
37 import static org.onap.policy.drools.apps.controller.usecases.UsecasesConstants.VSERVER_VSERVER_NAME;
39 import java.util.Deque;
42 import java.util.stream.Collectors;
43 import java.util.stream.Stream;
44 import org.drools.core.WorkingMemory;
45 import org.onap.policy.controlloop.ControlLoopException;
46 import org.onap.policy.controlloop.ControlLoopResponse;
47 import org.onap.policy.controlloop.VirtualControlLoopEvent;
48 import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
49 import org.onap.policy.controlloop.actorserviceprovider.OperationProperties;
50 import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
51 import org.onap.policy.controlloop.drl.legacy.ControlLoopParams;
52 import org.onap.policy.controlloop.eventmanager.ActorConstants;
53 import org.onap.policy.controlloop.eventmanager.ClEventManagerWithEvent;
54 import org.onap.policy.controlloop.eventmanager.EventManagerServices;
55 import org.onap.policy.controlloop.eventmanager.StepContext;
56 import org.onap.policy.drools.apps.controller.usecases.step.AaiCqStep2;
57 import org.onap.policy.drools.apps.controller.usecases.step.AaiGetPnfStep2;
58 import org.onap.policy.drools.apps.controller.usecases.step.AaiGetTenantStep2;
59 import org.onap.policy.drools.apps.controller.usecases.step.GetTargetEntityStep2;
60 import org.onap.policy.drools.apps.controller.usecases.step.GuardStep2;
61 import org.onap.policy.drools.apps.controller.usecases.step.LockStep2;
62 import org.onap.policy.drools.apps.controller.usecases.step.Step2;
63 import org.onap.policy.sdnr.PciMessage;
66 * Manager for a single control loop event. Once this has been created, the event can be
67 * retracted from working memory. Processing progresses through each policy, which
68 * involves at least one step. As a step is processed, additional preprocessor steps may
69 * be pushed onto the queue (e.g., locks, A&AI queries, guards).
71 public class UsecasesEventManager extends ClEventManagerWithEvent<Step2> implements StepContext {
73 private static final long serialVersionUID = -1216568161322872641L;
76 * If there's a failure from one of these actors, then the TOSCA processing should be
79 private static final Set<String> ABORT_ACTORS = Set.of(ActorConstants.CL_TIMEOUT_ACTOR, ActorConstants.LOCK_ACTOR);
81 private static final Set<String> VALID_TARGETS = Stream
82 .of(VM_NAME, VNF_NAME, VSERVER_VSERVER_NAME, GENERIC_VNF_VNF_ID, GENERIC_VNF_VNF_NAME, PNF_NAME)
83 .map(String::toLowerCase).collect(Collectors.toSet());
85 private static final Set<String> TRUE_VALUES = Set.of("true", "t", "yes", "y");
88 * Names of Operation properties for which A&AI PNF query is needed.
90 private static final Set<String> PNF_PROPERTIES = Set.of(OperationProperties.AAI_PNF);
93 * Names of Operation properties for which A&AI Tenant query is needed.
95 private static final Set<String> TENANT_PROPERTIES = Set.of(OperationProperties.AAI_VSERVER_LINK);
98 * Names of Operation properties for which A&AI custom query is needed.
100 private static final Set<String> CQ_PROPERTIES = Set.of(OperationProperties.AAI_DEFAULT_CLOUD_REGION,
101 OperationProperties.AAI_VNF, OperationProperties.AAI_SERVICE_MODEL,
102 OperationProperties.AAI_VNF_MODEL, OperationProperties.AAI_SERVICE,
103 OperationProperties.AAI_RESOURCE_VNF, UsecasesConstants.AAI_DEFAULT_GENERIC_VNF);
107 * Constructs the object.
109 * @param services services the manager should use when processing the event
110 * @param params control loop parameters
111 * @param event event to be managed by this object
112 * @param workMem working memory to update if this changes
113 * @throws ControlLoopException if the event is invalid or if a YAML processor cannot
116 public UsecasesEventManager(EventManagerServices services, ControlLoopParams params, VirtualControlLoopEvent event,
117 WorkingMemory workMem) throws ControlLoopException {
119 super(services, params, event, workMem);
121 if (isClosedLoopDisabled(event)) {
122 throw new IllegalStateException("is-closed-loop-disabled is set to true on VServer or VNF");
125 if (isProvStatusInactive(event)) {
126 throw new IllegalStateException("prov-status is not ACTIVE on VServer or VNF");
131 * This is needed to satisfy drools, thus disabling sonar.
134 public Deque<Step2> getSteps() { // NOSONAR
135 return super.getSteps();
139 public void loadPreprocessorSteps() {
140 super.loadPreprocessorSteps();
142 final Deque<Step2> steps = getSteps();
143 final Step2 step = getSteps().peek();
145 // determine if any A&AI queries are needed
148 var needTenant = false;
149 var needTargetEntity = false;
151 for (String propName : step.getPropertyNames()) {
152 needCq = needCq || CQ_PROPERTIES.contains(propName);
153 needPnf = needPnf || PNF_PROPERTIES.contains(propName);
154 needTenant = needTenant || TENANT_PROPERTIES.contains(propName);
155 needTargetEntity = needTargetEntity || OperationProperties.AAI_TARGET_ENTITY.equals(propName);
159 * The Policy's actual operation requires additional, implicit steps, such as
160 * locking and guards.
162 final boolean needPolicySteps = step.isPolicyStep();
166 * NOTE: need to push steps onto the queue in the OPPOSITE order in which they
171 // GUARD must be pushed first
172 if (needPolicySteps) {
173 steps.push(new GuardStep2(step, getClosedLoopControlName()));
178 steps.push(new AaiCqStep2(step));
182 steps.push(new AaiGetPnfStep2(step));
186 steps.push(new AaiGetTenantStep2(step));
189 // LOCK must be pushed after the queries
190 if (needPolicySteps) {
191 steps.push(new LockStep2(step));
194 // GET-TARGET-ENTITY should be pushed last
195 if (needTargetEntity) {
196 steps.push(new GetTargetEntityStep2(step));
201 public boolean isAbort(OperationOutcome outcome) {
202 return (super.isAbort(outcome) && ABORT_ACTORS.contains(outcome.getActor()));
206 * Stores an operation outcome in the DB.
208 * @param outcome operation outcome to store
210 public void storeInDataBase(OperationOutcome2 outcome) {
211 storeInDataBase(outcome, getProperty(OperationProperties.AAI_TARGET_ENTITY));
215 public ControlLoopResponse makeControlLoopResponse(OperationOutcome outcome) {
216 var clRsp = super.makeControlLoopResponse(outcome);
218 Object obj = outcome.getResponse();
219 if (!(obj instanceof PciMessage)) {
223 PciMessage msg = (PciMessage) obj;
224 if (msg.getBody() != null && msg.getBody().getOutput() != null) {
225 clRsp.setPayload(msg.getBody().getOutput().getPayload());
232 protected void checkEventSyntax(VirtualControlLoopEvent event) throws ControlLoopException {
233 super.checkEventSyntax(event);
234 validateAaiData(event);
238 protected void validateTarget(VirtualControlLoopEvent event) throws ControlLoopException {
239 super.validateTarget(event);
241 if (!VALID_TARGETS.contains(event.getTarget().toLowerCase())) {
242 throw new ControlLoopException("target field invalid");
246 private void validateAaiData(VirtualControlLoopEvent event) throws ControlLoopException {
247 Map<String, String> eventAai = event.getAai();
248 if (eventAai == null) {
249 throw new ControlLoopException("AAI is null");
251 if (event.getTargetType() == null) {
252 throw new ControlLoopException("The Target type is null");
254 switch (event.getTargetType()) {
256 validateAaiVmVnfData(eventAai);
259 validateAaiPnfData(eventAai);
262 throw new ControlLoopException("The target type is not supported");
266 private void validateAaiVmVnfData(Map<String, String> eventAai) throws ControlLoopException {
267 if (eventAai.get(GENERIC_VNF_VNF_ID) == null && eventAai.get(VSERVER_VSERVER_NAME) == null
268 && eventAai.get(GENERIC_VNF_VNF_NAME) == null) {
269 throw new ControlLoopException(
270 "generic-vnf.vnf-id or generic-vnf.vnf-name or vserver.vserver-name information missing");
274 private void validateAaiPnfData(Map<String, String> eventAai) throws ControlLoopException {
275 if (eventAai.get(PNF_NAME) == null) {
276 throw new ControlLoopException("AAI PNF object key pnf-name is missing");
281 * Is closed loop disabled for an event.
283 * @param event the event
284 * @return <code>true</code> if the control loop is disabled, <code>false</code>
287 private static boolean isClosedLoopDisabled(VirtualControlLoopEvent event) {
288 Map<String, String> aai = event.getAai();
289 return (isAaiTrue(aai.get(VSERVER_IS_CLOSED_LOOP_DISABLED))
290 || isAaiTrue(aai.get(GENERIC_VNF_IS_CLOSED_LOOP_DISABLED))
291 || isAaiTrue(aai.get(PNF_IS_IN_MAINT)));
295 * Does provisioning status, for an event, have a value other than ACTIVE.
297 * @param event the event
298 * @return {@code true} if the provisioning status is neither ACTIVE nor {@code null},
299 * {@code false} otherwise
301 private static boolean isProvStatusInactive(VirtualControlLoopEvent event) {
302 Map<String, String> aai = event.getAai();
303 return !(PROV_STATUS_ACTIVE.equalsIgnoreCase(aai.getOrDefault(VSERVER_PROV_STATUS, PROV_STATUS_ACTIVE))
304 && PROV_STATUS_ACTIVE.equalsIgnoreCase(
305 aai.getOrDefault(GENERIC_VNF_PROV_STATUS, PROV_STATUS_ACTIVE)));
309 * Determines the boolean value represented by the given AAI field value.
311 * @param aaiValue value to be examined
312 * @return the boolean value represented by the field value, or {@code false} if the
313 * value is {@code null}
315 private static boolean isAaiTrue(String aaiValue) {
316 return (aaiValue != null && TRUE_VALUES.contains(aaiValue.toLowerCase()));
320 protected void loadPolicyStep(ControlLoopOperationParams params) {
321 getSteps().add(new Step2(this, params, getEvent()));