gerrit.onap Code Review - policy/distribution.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2019 Nordix Foundation.
   4  *  Modifications Copyright (C) 2020 AT&T Inc.
   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
   9  *
  10  *      http://www.apache.org/licenses/LICENSE-2.0
  11  *
  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.
  17  *
  18  * SPDX-License-Identifier: Apache-2.0
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.onap.policy.distribution.forwarding.lifecycle.api;
  23
  24 import com.google.common.collect.ImmutableMap;
  25 import java.util.ArrayList;
  26 import java.util.Arrays;
  27 import java.util.Collection;
  28 import java.util.List;
  29 import java.util.Map;
  30 import javax.ws.rs.client.Entity;
  31 import javax.ws.rs.core.HttpHeaders;
  32 import javax.ws.rs.core.MediaType;
  33 import javax.ws.rs.core.Response;
  34 import javax.ws.rs.core.Response.Status;
  35 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  36 import org.onap.policy.common.endpoints.http.client.HttpClient;
  37 import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
  38 import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
  39 import org.onap.policy.common.parameters.ParameterService;
  40 import org.onap.policy.distribution.forwarding.PolicyForwarder;
  41 import org.onap.policy.distribution.forwarding.PolicyForwardingException;
  42 import org.onap.policy.models.pap.concepts.PdpDeployPolicies;
  43 import org.onap.policy.models.tosca.authorative.concepts.ToscaEntity;
  44 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
  45 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyIdentifierOptVersion;
  46 import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 /**
  51  * This class provides an implementation of {@link PolicyForwarder} interface for forwarding the given policies & policy
  52  * types to the life cycle api's of policy framework.
  53  *
  54  * @author Ram Krishna Verma (ram.krishna.verma@est.tech)
  55  */
  56 public class LifecycleApiPolicyForwarder implements PolicyForwarder {
  57
  58     private static final String DEPLOY_POLICY_URI = "/policy/pap/v1/pdps/policies";
  59     private static final String CREATE_POLICY_TYPE_URI = "/policy/api/v1/policytypes/";
  60     private static final Logger LOGGER = LoggerFactory.getLogger(LifecycleApiPolicyForwarder.class);
  61     private LifecycleApiForwarderParameters forwarderParameters;
  62
  63     /**
  64      * {@inheritDoc}.
  65      */
  66     @Override
  67     public void configure(final String parameterGroupName) {
  68         forwarderParameters = ParameterService.get(parameterGroupName);
  69     }
  70
  71     /**
  72      * {@inheritDoc}.
  73      */
  74     @Override
  75     public void forward(final Collection<ToscaEntity> entities) throws PolicyForwardingException {
  76         final List<ToscaEntity> failedEntities = new ArrayList<>();
  77         for (final ToscaEntity entity : entities) {
  78             forwardSingleEntity(failedEntities, entity);
  79         }
  80         if (!failedEntities.isEmpty()) {
  81             throw new PolicyForwardingException(
  82                     "Failed forwarding the following entities: " + Arrays.toString(failedEntities.toArray()));
  83         }
  84     }
  85
  86     private void forwardSingleEntity(final List<ToscaEntity> failedEntities, final ToscaEntity entity) {
  87         Response policyCreated = null;
  88         try {
  89             if (entity instanceof ToscaServiceTemplate) {
  90                 final ToscaServiceTemplate toscaServiceTemplate = (ToscaServiceTemplate) entity;
  91                 if (null != toscaServiceTemplate.getPolicyTypes() && !toscaServiceTemplate.getPolicyTypes().isEmpty()) {
  92                     createPolicyType(toscaServiceTemplate);
  93                 }
  94                 if (null != toscaServiceTemplate.getToscaTopologyTemplate()
  95                         && null != toscaServiceTemplate.getToscaTopologyTemplate().getPolicies()
  96                         && !toscaServiceTemplate.getToscaTopologyTemplate().getPolicies().isEmpty()
  97                         && !toscaServiceTemplate.getToscaTopologyTemplate().getPolicies().get(0).entrySet().isEmpty()) {
  98                     policyCreated = createPolicy(toscaServiceTemplate);
  99                 }
 100                 if (forwarderParameters.isDeployPolicies() && policyCreated != null) {
 101                     deployPolicy(policyCreated.readEntity(ToscaServiceTemplate.class));
 102                 }
 103             } else {
 104                 throw new PolicyForwardingException("The entity is not of type ToscaServiceTemplate - " + entity);
 105             }
 106         } catch (final Exception exp) {
 107             LOGGER.error(exp.getMessage(), exp);
 108             failedEntities.add(entity);
 109         }
 110     }
 111
 112     private Response createPolicyType(final ToscaServiceTemplate toscaServiceTemplate)
 113             throws PolicyForwardingException {
 114         return invokeHttpClient(Entity.entity(toscaServiceTemplate, MediaType.APPLICATION_JSON), CREATE_POLICY_TYPE_URI,
 115                 true);
 116     }
 117
 118     private Response createPolicy(final ToscaServiceTemplate toscaServiceTemplate) throws PolicyForwardingException {
 119         final ToscaPolicy policy = toscaServiceTemplate.getToscaTopologyTemplate().getPolicies().get(0).entrySet()
 120                 .iterator().next().getValue();
 121         return invokeHttpClient(Entity.entity(toscaServiceTemplate, MediaType.APPLICATION_JSON),
 122                 CREATE_POLICY_TYPE_URI + policy.getType() + "/versions/" + policy.getTypeVersion() + "/policies", true);
 123     }
 124
 125     private Response deployPolicy(final ToscaServiceTemplate toscaServiceTemplate) throws PolicyForwardingException {
 126         final PdpDeployPolicies pdpPolicies = new PdpDeployPolicies();
 127         final List<ToscaPolicyIdentifierOptVersion> policyIdentifierList = new ArrayList<>();
 128         for (final Map<String, ToscaPolicy> policyMap : toscaServiceTemplate.getToscaTopologyTemplate().getPolicies()) {
 129             final String policyId = policyMap.entrySet().iterator().next().getValue().getMetadata().get("policy-id");
 130             final String policyVersion =
 131                     policyMap.entrySet().iterator().next().getValue().getMetadata().get("policy-version");
 132             final ToscaPolicyIdentifierOptVersion toscaPolicyIdentifier =
 133                     new ToscaPolicyIdentifierOptVersion(policyId, policyVersion);
 134             policyIdentifierList.add(toscaPolicyIdentifier);
 135         }
 136         pdpPolicies.setPolicies(policyIdentifierList);
 137         return invokeHttpClient(Entity.entity(pdpPolicies, MediaType.APPLICATION_JSON), DEPLOY_POLICY_URI, false);
 138     }
 139
 140     private Response invokeHttpClient(final Entity<?> entity, final String path, final boolean wantApi)
 141             throws PolicyForwardingException {
 142         Response response = null;
 143         try {
 144             response = getHttpClient(wantApi).post(path, entity, ImmutableMap.of(HttpHeaders.ACCEPT,
 145                     MediaType.APPLICATION_JSON, HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON));
 146             if (response.getStatus() != Status.OK.getStatusCode()) {
 147                 LOGGER.error(
 148                         "Invocation of path {} failed for entity {}. Response status: {}, Response status info: {}",
 149                         path, entity, response.getStatus(), response.getStatusInfo());
 150                 throw new PolicyForwardingException("Failed creating the entity - " + entity);
 151             }
 152         } catch (final HttpClientConfigException exception) {
 153             throw new PolicyForwardingException("Invocation of path " + path + " failed for entity " + entity,
 154                     exception);
 155         }
 156         return response;
 157     }
 158
 159     private HttpClient getHttpClient(final boolean wantApi) throws HttpClientConfigException {
 160         final boolean https = forwarderParameters.isHttps();
 161         final LifecycleApiParameters parameters =
 162                 (wantApi ? forwarderParameters.getApiParameters() : forwarderParameters.getPapParameters());
 163         final BusTopicParams params = BusTopicParams.builder().clientName("Policy Distribution").useHttps(https)
 164                 .hostname(parameters.getHostName()).port(parameters.getPort()).userName(parameters.getUserName())
 165                 .password(parameters.getPassword())
 166                 .build();
 167         return HttpClientFactoryInstance.getClientFactory().build(params);
 168     }
 169 }
 170