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

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2018 Ericsson. All rights reserved.
   4  *  Copyright (C) 2019 Intel Corp. All rights reserved.
   5  *  Modifications Copyright (C) 2019 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
  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  *
  19  * SPDX-License-Identifier: Apache-2.0
  20  * ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.policy.distribution.forwarding.xacml.pdp;
  24
  25 import java.util.Collection;
  26 import java.util.Collections;
  27
  28 import javax.ws.rs.client.Entity;
  29 import javax.ws.rs.core.MediaType;
  30 import javax.ws.rs.core.Response;
  31
  32 import org.onap.policy.api.PolicyParameters;
  33 import org.onap.policy.api.PushPolicyParameters;
  34 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  35 import org.onap.policy.common.endpoints.http.client.HttpClient;
  36 import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
  37 import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
  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.xacml.pdp.adapters.XacmlPdpOptimizationPolicyAdapter;
  42 import org.onap.policy.models.tosca.authorative.concepts.ToscaEntity;
  43 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46 import org.springframework.http.HttpStatus;
  47
  48 /**
  49  * Forwards policies to the XACML PDP.
  50  */
  51 public class XacmlPdpPolicyForwarder implements PolicyForwarder {
  52
  53     private static final Logger LOGGER = LoggerFactory.getLogger(XacmlPdpPolicyForwarder.class);
  54     private static final String BASE_PATH = "pdp/api/";
  55
  56     private XacmlPdpPolicyForwarderParameterGroup configurationParameters = null;
  57
  58
  59     @Override
  60     public void forward(final Collection<ToscaEntity> policies) {
  61         for (final ToscaEntity policy : policies) {
  62             forward(policy);
  63         }
  64     }
  65
  66     private void forward(final ToscaEntity policy) {
  67         final XacmlPdpPolicyAdapter<?> policyAdapter = getXacmlPdpPolicyAdapter(policy);
  68
  69         if (policyAdapter == null) {
  70             LOGGER.error("Cannot forward policy {}. Unsupported policy type {}", policy,
  71                     policy.getClass().getSimpleName());
  72             return;
  73         }
  74
  75         final boolean policyCreated = createPolicy(policyAdapter);
  76         if (policyCreated) {
  77             pushPolicy(policyAdapter);
  78         }
  79     }
  80
  81     private XacmlPdpPolicyAdapter<?> getXacmlPdpPolicyAdapter(final ToscaEntity policy) {
  82         if (policy instanceof ToscaPolicy) {
  83             return new XacmlPdpOptimizationPolicyAdapter((ToscaPolicy) policy);
  84         }
  85         return null;
  86     }
  87
  88     private boolean createPolicy(final XacmlPdpPolicyAdapter<?> policyAdapter) {
  89         final PolicyParameters policyParameters = policyAdapter.getAsPolicyParameters();
  90         final Entity<PolicyParameters> entity = Entity.entity(policyParameters, MediaType.APPLICATION_JSON);
  91
  92         return invokeHttpClient(entity, "createPolicy", policyAdapter.getPolicy().getName());
  93     }
  94
  95     private boolean pushPolicy(final XacmlPdpPolicyAdapter<?> policyAdapter) {
  96         final PushPolicyParameters pushPolicyParameters =
  97                 policyAdapter.getAsPushPolicyParameters(configurationParameters.getPdpGroup());
  98         final Entity<PushPolicyParameters> entity = Entity.entity(pushPolicyParameters, MediaType.APPLICATION_JSON);
  99
 100         return invokeHttpClient(entity, "pushPolicy", policyAdapter.getPolicy().getName());
 101     }
 102
 103     private boolean invokeHttpClient(final Entity<?> entity, final String method, final String policyName) {
 104
 105         try {
 106             final Response response = getHttpClient().put(method, entity,
 107                     Collections.singletonMap("ClientAuth", configurationParameters.getClientAuth()));
 108
 109             if (response.getStatus() != HttpStatus.OK.value()) {
 110                 LOGGER.error(
 111                         "Invocation of method {} failed for policy {}. Response status: {}, Response status info: {}",
 112                         method, policyName, response.getStatus(), response.getStatusInfo());
 113                 return false;
 114             }
 115         } catch (final HttpClientConfigException exception) {
 116             LOGGER.error("Invocation of method " + method + " failed for policy " + policyName
 117                     + " due to error opening Http client", exception);
 118             return false;
 119         }
 120         return true;
 121     }
 122
 123     private HttpClient getHttpClient() throws HttpClientConfigException {
 124         final boolean useHttps = configurationParameters.isUseHttps();
 125         final String hostname = configurationParameters.getHostname();
 126         final int port = configurationParameters.getPort();
 127         final String userName = configurationParameters.getUserName();
 128         final String password = configurationParameters.getPassword();
 129         final boolean managed = configurationParameters.isManaged();
 130         final BusTopicParams params =
 131                 BusTopicParams.builder().clientName("SDC Dist").useHttps(useHttps).hostname(hostname).port(port)
 132                         .userName(userName).password(password).basePath(BASE_PATH).managed(managed).build();
 133         return getHttpClientFactory().build(params);
 134     }
 135
 136     @Override
 137     public void configure(final String parameterGroupName) {
 138         configurationParameters = ParameterService.get(parameterGroupName);
 139     }
 140
 141     // these may be overridden by junit tests
 142
 143     protected HttpClientFactory getHttpClientFactory() {
 144         return HttpClientFactoryInstance.getClientFactory();
 145     }
 146 }