adapters/mso-vnfm-adapter/mso-vnfm-etsi-adapter/src/main/java/org/onap/so/adapters/vnfmadapter/extclients/vnfm/VnfmServiceProviderConfiguration.java

   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.KeyStore;
  28 import java.security.KeyStoreException;
  29 import java.security.NoSuchAlgorithmException;
  30 import java.security.UnrecoverableKeyException;
  31 import java.security.cert.CertificateException;
  32 import java.util.Iterator;
  33 import java.util.Map;
  34 import java.util.UUID;
  35 import java.util.concurrent.ConcurrentHashMap;
  36 import javax.net.ssl.SSLContext;
  37 import org.apache.commons.lang3.StringUtils;
  38 import org.apache.http.client.HttpClient;
  39 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
  40 import org.apache.http.impl.client.HttpClients;
  41 import org.apache.http.ssl.SSLContextBuilder;
  42 import org.onap.aai.domain.yang.EsrSystemInfo;
  43 import org.onap.aai.domain.yang.EsrVnfm;
  44 import org.onap.so.adapters.vnfmadapter.extclients.vnfm.lcn.JSON;
  45 import org.onap.so.configuration.rest.BasicHttpHeadersProvider;
  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.BufferingClientHttpRequestFactory;
  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 trustStorePassword;
  77
  78     @Value("${server.ssl.key-store:#{null}}")
  79     private Resource keyStoreResource;
  80     @Value("${server.ssl.key--store-password:#{null}}")
  81     private String keyStorePassword;
  82
  83     /**
  84      * This property is only intended to be temporary until the AAI schema is updated to support setting the endpoint
  85      */
  86     @Value("${vnfmadapter.temp.vnfm.oauth.endpoint:#{null}}")
  87     private String oauthEndpoint;
  88
  89     @Qualifier(CONFIGURABLE_REST_TEMPLATE)
  90     @Autowired()
  91     private RestTemplate defaultRestTemplate;
  92
  93     public HttpRestServiceProvider getHttpRestServiceProvider(final EsrVnfm vnfm) {
  94         if (!mapOfVnfmIdToHttpRestServiceProvider.containsKey(vnfm.getVnfmId())) {
  95             mapOfVnfmIdToHttpRestServiceProvider.put(vnfm.getVnfmId(), createHttpRestServiceProvider(vnfm));
  96         }
  97         return mapOfVnfmIdToHttpRestServiceProvider.get(vnfm.getVnfmId());
  98     }
  99
 100     private HttpRestServiceProvider createHttpRestServiceProvider(final EsrVnfm vnfm) {
 101         final RestTemplate restTemplate = createRestTemplate(vnfm);
 102         setGsonMessageConverter(restTemplate);
 103         if (trustStore != null) {
 104             setTrustStore(restTemplate);
 105         }
 106         return new HttpRestServiceProviderImpl(restTemplate, new BasicHttpHeadersProvider());
 107     }
 108
 109     private RestTemplate createRestTemplate(final EsrVnfm vnfm) {
 110         if (vnfm != null) {
 111             for (final EsrSystemInfo esrSystemInfo : vnfm.getEsrSystemInfoList().getEsrSystemInfo()) {
 112                 if (!StringUtils.isEmpty(esrSystemInfo.getUserName())
 113                         && !StringUtils.isEmpty(esrSystemInfo.getPassword())) {
 114                     return createOAuth2RestTemplate(esrSystemInfo);
 115                 }
 116             }
 117         }
 118         return defaultRestTemplate;
 119     }
 120
 121     private OAuth2RestTemplate createOAuth2RestTemplate(final EsrSystemInfo esrSystemInfo) {
 122         logger.debug("Getting OAuth2RestTemplate ...");
 123         final ClientCredentialsResourceDetails resourceDetails = new ClientCredentialsResourceDetails();
 124         resourceDetails.setId(UUID.randomUUID().toString());
 125         resourceDetails.setClientId(esrSystemInfo.getUserName());
 126         resourceDetails.setClientSecret(esrSystemInfo.getPassword());
 127         resourceDetails.setAccessTokenUri(
 128                 oauthEndpoint == null ? esrSystemInfo.getServiceUrl().replace("vnflcm/v1", "oauth/token")
 129                         : oauthEndpoint);
 130         resourceDetails.setGrantType("client_credentials");
 131         return new OAuth2RestTemplate(resourceDetails);
 132     }
 133
 134     private void setGsonMessageConverter(final RestTemplate restTemplate) {
 135         final Iterator<HttpMessageConverter<?>> iterator = restTemplate.getMessageConverters().iterator();
 136         while (iterator.hasNext()) {
 137             if (iterator.next() instanceof MappingJackson2HttpMessageConverter) {
 138                 iterator.remove();
 139             }
 140         }
 141         final Gson gson = new JSON().getGson();
 142         restTemplate.getMessageConverters().add(new GsonHttpMessageConverter(gson));
 143     }
 144
 145     private void setTrustStore(final RestTemplate restTemplate) {
 146         SSLContext sslContext;
 147         try {
 148             if (keyStoreResource != null) {
 149                 KeyStore keystore = KeyStore.getInstance("pkcs12");
 150                 keystore.load(keyStoreResource.getInputStream(), keyStorePassword.toCharArray());
 151                 sslContext =
 152                         new SSLContextBuilder().loadTrustMaterial(trustStore.getURL(), trustStorePassword.toCharArray())
 153                                 .loadKeyMaterial(keystore, keyStorePassword.toCharArray()).build();
 154             } else {
 155                 sslContext = new SSLContextBuilder()
 156                         .loadTrustMaterial(trustStore.getURL(), trustStorePassword.toCharArray()).build();
 157             }
 158             logger.info("Setting truststore: {}", trustStore.getURL());
 159             final SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext);
 160             final HttpClient httpClient = HttpClients.custom().setSSLSocketFactory(socketFactory).build();
 161             final HttpComponentsClientHttpRequestFactory factory =
 162                     new HttpComponentsClientHttpRequestFactory(httpClient);
 163             restTemplate.setRequestFactory(new BufferingClientHttpRequestFactory(factory));
 164         } catch (KeyManagementException | NoSuchAlgorithmException | KeyStoreException | CertificateException
 165                 | IOException | UnrecoverableKeyException exception) {
 166             logger.error("Error reading truststore, TLS connection to VNFM will fail.", exception);
 167         }
 168     }
 169
 170 }