gerrit.onap Code Review - so.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2019 Nordix Foundation.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.so.adapters.vnfmadapter.extclients.vnfm;
  22
  23 import static org.onap.so.client.RestTemplateConfig.CONFIGURABLE_REST_TEMPLATE;
  24 import com.google.gson.Gson;
  25 import java.io.IOException;
  26 import java.security.KeyManagementException;
  27 import java.security.KeyStoreException;
  28 import java.security.NoSuchAlgorithmException;
  29 import java.security.cert.CertificateException;
  30 import java.util.Iterator;
  31 import java.util.ListIterator;
  32 import java.util.Map;
  33 import java.util.UUID;
  34 import java.util.concurrent.ConcurrentHashMap;
  35 import javax.net.ssl.SSLContext;
  36 import org.apache.commons.lang3.StringUtils;
  37 import org.apache.http.client.HttpClient;
  38 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
  39 import org.apache.http.impl.client.HttpClients;
  40 import org.apache.http.ssl.SSLContextBuilder;
  41 import org.onap.aai.domain.yang.EsrSystemInfo;
  42 import org.onap.aai.domain.yang.EsrVnfm;
  43 import org.onap.so.adapters.vnfmadapter.extclients.vnfm.lcn.JSON;
  44 import org.onap.so.configuration.rest.BasicHttpHeadersProvider;
  45 import org.onap.so.logging.jaxrs.filter.SpringClientFilter;
  46 import org.onap.so.rest.service.HttpRestServiceProvider;
  47 import org.onap.so.rest.service.HttpRestServiceProviderImpl;
  48 import org.slf4j.Logger;
  49 import org.slf4j.LoggerFactory;
  50 import org.springframework.beans.factory.annotation.Autowired;
  51 import org.springframework.beans.factory.annotation.Qualifier;
  52 import org.springframework.beans.factory.annotation.Value;
  53 import org.springframework.context.annotation.Configuration;
  54 import org.springframework.core.io.Resource;
  55 import org.springframework.http.client.ClientHttpRequestInterceptor;
  56 import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
  57 import org.springframework.http.converter.HttpMessageConverter;
  58 import org.springframework.http.converter.json.GsonHttpMessageConverter;
  59 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
  60 import org.springframework.security.oauth2.client.OAuth2RestTemplate;
  61 import org.springframework.security.oauth2.client.token.grant.client.ClientCredentialsResourceDetails;
  62 import org.springframework.web.client.RestTemplate;
  63
  64 /**
  65  * Configures the HttpRestServiceProvider for REST call to a VNFM.
  66  */
  67 @Configuration
  68 public class VnfmServiceProviderConfiguration {
  69
  70     private static final Logger logger = LoggerFactory.getLogger(VnfmServiceProviderConfiguration.class);
  71     private Map<String, HttpRestServiceProvider> mapOfVnfmIdToHttpRestServiceProvider = new ConcurrentHashMap<>();
  72
  73     @Value("${http.client.ssl.trust-store:#{null}}")
  74     private Resource trustStore;
  75     @Value("${http.client.ssl.trust-store-password:#{null}}")
  76     private String trustPassword;
  77
  78     /**
  79      * This property is only intended to be temporary until the AAI schema is updated to support setting the endpoint
  80      */
  81     @Value("${vnfmadapter.temp.vnfm.oauth.endpoint:#{null}}")
  82     private String oauthEndpoint;
  83
  84     @Qualifier(CONFIGURABLE_REST_TEMPLATE)
  85     @Autowired()
  86     private RestTemplate defaultRestTemplate;
  87
  88     public HttpRestServiceProvider getHttpRestServiceProvider(final EsrVnfm vnfm) {
  89         if (!mapOfVnfmIdToHttpRestServiceProvider.containsKey(vnfm.getVnfmId())) {
  90             mapOfVnfmIdToHttpRestServiceProvider.put(vnfm.getVnfmId(), createHttpRestServiceProvider(vnfm));
  91         }
  92         return mapOfVnfmIdToHttpRestServiceProvider.get(vnfm.getVnfmId());
  93     }
  94
  95     private HttpRestServiceProvider createHttpRestServiceProvider(final EsrVnfm vnfm) {
  96         final RestTemplate restTemplate = createRestTemplate(vnfm);
  97         setGsonMessageConverter(restTemplate);
  98         if (trustStore != null) {
  99             setTrustStore(restTemplate);
 100         }
 101         removeSpringClientFilter(restTemplate);
 102         return new HttpRestServiceProviderImpl(restTemplate, new BasicHttpHeadersProvider());
 103     }
 104
 105     private RestTemplate createRestTemplate(final EsrVnfm vnfm) {
 106         if (vnfm != null) {
 107             for (final EsrSystemInfo esrSystemInfo : vnfm.getEsrSystemInfoList().getEsrSystemInfo()) {
 108                 if (!StringUtils.isEmpty(esrSystemInfo.getUserName())
 109                         && !StringUtils.isEmpty(esrSystemInfo.getPassword())) {
 110                     return createOAuth2RestTemplate(esrSystemInfo);
 111                 }
 112             }
 113         }
 114         return defaultRestTemplate;
 115     }
 116
 117     private OAuth2RestTemplate createOAuth2RestTemplate(final EsrSystemInfo esrSystemInfo) {
 118         logger.debug("Getting OAuth2RestTemplate ...");
 119         final ClientCredentialsResourceDetails resourceDetails = new ClientCredentialsResourceDetails();
 120         resourceDetails.setId(UUID.randomUUID().toString());
 121         resourceDetails.setClientId(esrSystemInfo.getUserName());
 122         resourceDetails.setClientSecret(esrSystemInfo.getPassword());
 123         resourceDetails.setAccessTokenUri(
 124                 oauthEndpoint == null ? esrSystemInfo.getServiceUrl().replace("vnflcm/v1", "oauth/token")
 125                         : oauthEndpoint);
 126         resourceDetails.setGrantType("client_credentials");
 127         return new OAuth2RestTemplate(resourceDetails);
 128     }
 129
 130     private void setGsonMessageConverter(final RestTemplate restTemplate) {
 131         final Iterator<HttpMessageConverter<?>> iterator = restTemplate.getMessageConverters().iterator();
 132         while (iterator.hasNext()) {
 133             if (iterator.next() instanceof MappingJackson2HttpMessageConverter) {
 134                 iterator.remove();
 135             }
 136         }
 137         final Gson gson = new JSON().getGson();
 138         restTemplate.getMessageConverters().add(new GsonHttpMessageConverter(gson));
 139     }
 140
 141     private void setTrustStore(final RestTemplate restTemplate) {
 142         SSLContext sslContext;
 143         try {
 144             sslContext =
 145                     new SSLContextBuilder().loadTrustMaterial(trustStore.getURL(), trustPassword.toCharArray()).build();
 146             logger.info("Setting truststore: {}", trustStore.getURL());
 147             final SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext);
 148             final HttpClient httpClient = HttpClients.custom().setSSLSocketFactory(socketFactory).build();
 149             final HttpComponentsClientHttpRequestFactory factory =
 150                     new HttpComponentsClientHttpRequestFactory(httpClient);
 151             restTemplate.setRequestFactory(factory);
 152         } catch (KeyManagementException | NoSuchAlgorithmException | KeyStoreException | CertificateException
 153                 | IOException exception) {
 154             logger.error("Error reading truststore, TLS connection to VNFM will fail.", exception);
 155         }
 156     }
 157
 158     private void removeSpringClientFilter(final RestTemplate restTemplate) {
 159         ListIterator<ClientHttpRequestInterceptor> interceptorIterator = restTemplate.getInterceptors().listIterator();
 160         while (interceptorIterator.hasNext()) {
 161             if (interceptorIterator.next() instanceof SpringClientFilter) {
 162                 interceptorIterator.remove();
 163             }
 164         }
 165     }
 166
 167 }