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 import javax.ws.rs.client.Entity;
  28 import javax.ws.rs.core.MediaType;
  29 import javax.ws.rs.core.Response;
  30 import org.onap.policy.api.PolicyParameters;
  31 import org.onap.policy.api.PushPolicyParameters;
  32 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  33 import org.onap.policy.common.endpoints.http.client.HttpClient;
  34 import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
  35 import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
  36 import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
  37 import org.onap.policy.common.parameters.ParameterService;
  38 import org.onap.policy.distribution.forwarding.PolicyForwarder;
  39 import org.onap.policy.distribution.forwarding.xacml.pdp.adapters.XacmlPdpOptimizationPolicyAdapter;
  40 import org.onap.policy.distribution.model.OptimizationPolicy;
  41 import org.onap.policy.distribution.model.Policy;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44 import org.springframework.http.HttpStatus;
  45
  46 /**
  47  * Forwards policies to the XACML PDP.
  48  */
  49 public class XacmlPdpPolicyForwarder implements PolicyForwarder {
  50
  51     private static final Logger LOGGER = LoggerFactory.getLogger(XacmlPdpPolicyForwarder.class);
  52     private static final String BASE_PATH = "pdp/api/";
  53
  54     private XacmlPdpPolicyForwarderParameterGroup configurationParameters = null;
  55
  56
  57     @Override
  58     public void forward(final Collection<Policy> policies) {
  59         for (Policy policy : policies) {
  60             forward(policy);
  61         }
  62     }
  63
  64     private void forward(Policy policy) {
  65         XacmlPdpPolicyAdapter<?> policyAdapter = getXacmlPdpPolicyAdapter(policy);
  66
  67         if (policyAdapter == null) {
  68             LOGGER.error("Cannot forward policy {}. Unsupported policy type {}",
  69                     policy, policy.getClass().getSimpleName());
  70             return;
  71         }
  72
  73         boolean policyCreated = createPolicy(policyAdapter);
  74         if (policyCreated) {
  75             pushPolicy(policyAdapter);
  76         }
  77     }
  78
  79     private XacmlPdpPolicyAdapter<?> getXacmlPdpPolicyAdapter(Policy policy) {
  80         if (policy instanceof OptimizationPolicy) {
  81             return new XacmlPdpOptimizationPolicyAdapter((OptimizationPolicy) policy);
  82         }
  83         return null;
  84     }
  85
  86     private boolean createPolicy(XacmlPdpPolicyAdapter<?> policyAdapter) {
  87         PolicyParameters policyParameters = policyAdapter.getAsPolicyParameters();
  88         Entity<PolicyParameters> entity = Entity.entity(policyParameters, MediaType.APPLICATION_JSON);
  89
  90         return invokeHttpClient(entity, "createPolicy", policyAdapter.getPolicy().getPolicyName());
  91     }
  92
  93     private boolean pushPolicy(XacmlPdpPolicyAdapter<?> policyAdapter) {
  94         PushPolicyParameters pushPolicyParameters =
  95                 policyAdapter.getAsPushPolicyParameters(configurationParameters.getPdpGroup());
  96         Entity<PushPolicyParameters> entity = Entity.entity(pushPolicyParameters, MediaType.APPLICATION_JSON);
  97
  98         return invokeHttpClient(entity, "pushPolicy", policyAdapter.getPolicy().getPolicyName());
  99     }
 100
 101     private boolean invokeHttpClient(final Entity<?> entity, final String method, final String policyName) {
 102
 103         try {
 104             Response response = getHttpClient().put(method, entity,
 105                     Collections.singletonMap("ClientAuth", configurationParameters.getClientAuth()));
 106
 107             if (response.getStatus() != HttpStatus.OK.value()) {
 108                 LOGGER.error(
 109                         "Invocation of method {} failed for policy {}. Response status: {}, Response status info: {}",
 110                         method, policyName, response.getStatus(), response.getStatusInfo());
 111                 return false;
 112             }
 113         } catch (HttpClientConfigException exception) {
 114             LOGGER.error("Invocation of method " + method + " failed for policy " + policyName
 115                     + " due to error opening Http client", exception);
 116             return false;
 117         }
 118         return true;
 119     }
 120
 121     private HttpClient getHttpClient() throws HttpClientConfigException {
 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 getHttpClientFactory().build(params);
 131     }
 132
 133     @Override
 134     public void configure(String parameterGroupName) {
 135         configurationParameters = ParameterService.get(parameterGroupName);
 136     }
 137
 138     // these may be overridden by junit tests
 139
 140     protected HttpClientFactory getHttpClientFactory() {
 141         return HttpClientFactoryInstance.getClientFactory();
 142     }
 143 }