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  * ================================================================================
   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.xacml.pdp;
  23
  24 import java.security.KeyManagementException;
  25 import java.security.NoSuchAlgorithmException;
  26 import java.util.Collection;
  27 import java.util.Collections;
  28 import javax.ws.rs.client.Entity;
  29 import javax.ws.rs.core.MediaType;
  30 import javax.ws.rs.core.Response;
  31 import org.onap.policy.api.PolicyParameters;
  32 import org.onap.policy.api.PushPolicyParameters;
  33 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  34 import org.onap.policy.common.endpoints.http.client.HttpClient;
  35 import org.onap.policy.common.parameters.ParameterService;
  36 import org.onap.policy.distribution.forwarding.PolicyForwarder;
  37 import org.onap.policy.distribution.forwarding.xacml.pdp.adapters.XacmlPdpOptimizationPolicyAdapter;
  38 import org.onap.policy.distribution.model.OptimizationPolicy;
  39 import org.onap.policy.distribution.model.Policy;
  40
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43 import org.springframework.http.HttpStatus;
  44
  45 /**
  46  * Forwards policies to the XACML PDP.
  47  */
  48 public class XacmlPdpPolicyForwarder implements PolicyForwarder {
  49
  50     private static final Logger LOGGER = LoggerFactory.getLogger(XacmlPdpPolicyForwarder.class);
  51     private static final String BASE_PATH = "pdp/api/";
  52
  53     private XacmlPdpPolicyForwarderParameterGroup configurationParameters = null;
  54
  55
  56     @Override
  57     public void forward(final Collection<Policy> policies) {
  58         for (Policy policy : policies) {
  59             forward(policy);
  60         }
  61     }
  62
  63     private void forward(Policy policy) {
  64         XacmlPdpPolicyAdapter<?> policyAdapter = getXacmlPdpPolicyAdapter(policy);
  65
  66         if (policyAdapter == null) {
  67             LOGGER.error("Cannot forward policy {}. Unsupported policy type {}",
  68                     policy, policy.getClass().getSimpleName());
  69             return;
  70         }
  71
  72         boolean policyCreated = createPolicy(policyAdapter);
  73         if (policyCreated) {
  74             pushPolicy(policyAdapter);
  75         }
  76     }
  77
  78     private XacmlPdpPolicyAdapter<?> getXacmlPdpPolicyAdapter(Policy policy) {
  79         if (policy instanceof OptimizationPolicy) {
  80             return new XacmlPdpOptimizationPolicyAdapter((OptimizationPolicy) policy);
  81         }
  82         return null;
  83     }
  84
  85     private boolean createPolicy(XacmlPdpPolicyAdapter<?> policyAdapter) {
  86         PolicyParameters policyParameters = policyAdapter.getAsPolicyParameters();
  87         Entity<PolicyParameters> entity = Entity.entity(policyParameters, MediaType.APPLICATION_JSON);
  88
  89         return invokeHttpClient(entity, "createPolicy", policyAdapter.getPolicy().getPolicyName());
  90     }
  91
  92     private boolean pushPolicy(XacmlPdpPolicyAdapter<?> policyAdapter) {
  93         PushPolicyParameters pushPolicyParameters =
  94                 policyAdapter.getAsPushPolicyParameters(configurationParameters.getPdpGroup());
  95         Entity<PushPolicyParameters> entity = Entity.entity(pushPolicyParameters, MediaType.APPLICATION_JSON);
  96
  97         return invokeHttpClient(entity, "pushPolicy", policyAdapter.getPolicy().getPolicyName());
  98     }
  99
 100     private boolean invokeHttpClient(final Entity<?> entity, final String method, final String policyName) {
 101
 102         try {
 103             Response response = getHttpClient().put(method, entity,
 104                     Collections.singletonMap("ClientAuth", configurationParameters.getClientAuth()));
 105
 106             if (response.getStatus() != HttpStatus.OK.value()) {
 107                 LOGGER.error(
 108                         "Invocation of method {} failed for policy {}. Response status: {}, Response status info: {}",
 109                         method, policyName, response.getStatus(), response.getStatusInfo());
 110                 return false;
 111             }
 112         } catch (KeyManagementException | NoSuchAlgorithmException | ClassNotFoundException exception) {
 113             LOGGER.error("Invocation of method " + method + " failed for policy " + policyName
 114                     + " due to error opening Http client", exception);
 115             return false;
 116         }
 117         return true;
 118     }
 119
 120     private HttpClient getHttpClient()
 121             throws KeyManagementException, NoSuchAlgorithmException, ClassNotFoundException {
 122         boolean useHttps = configurationParameters.isUseHttps();
 123         String hostname = configurationParameters.getHostname();
 124         int port = configurationParameters.getPort();
 125         String userName = configurationParameters.getUserName();
 126         String password = configurationParameters.getPassword();
 127         boolean managed = configurationParameters.isManaged();
 128         BusTopicParams params = BusTopicParams.builder().clientName("SDC Dist").useHttps(useHttps).hostname(hostname)
 129                 .port(port).userName(userName).password(password).basePath(BASE_PATH).managed(managed).build();
 130         return HttpClient.factory.build(params);
 131     }
 132
 133     @Override
 134     public void configure(String parameterGroupName) {
 135         configurationParameters = ParameterService.get(parameterGroupName);
 136     }
 137
 138 }