holmes-actions/src/main/java/org/onap/holmes/common/utils/HttpsUtils.java

   1 /**
   2  * Copyright 2017 ZTE Corporation.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
   5  * in compliance with the License. You may obtain a copy of the License at
   6  *
   7  * http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software distributed under the License
  10  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  11  * or implied. See the License for the specific language governing permissions and limitations under
  12  * the License.
  13  */
  14
  15 package org.onap.holmes.common.utils;
  16
  17 import java.io.IOException;
  18 import java.security.cert.CertificateException;
  19 import java.security.cert.X509Certificate;
  20 import java.util.ArrayList;
  21 import java.util.List;
  22 import java.util.Map;
  23 import lombok.extern.slf4j.Slf4j;
  24 import org.apache.http.Consts;
  25 import org.apache.http.HttpEntity;
  26 import org.apache.http.HttpResponse;
  27 import org.apache.http.HttpStatus;
  28 import org.apache.http.NameValuePair;
  29 import org.apache.http.client.entity.UrlEncodedFormEntity;
  30 import org.apache.http.client.methods.HttpGet;
  31 import org.apache.http.client.methods.HttpPost;
  32 import org.apache.http.client.methods.HttpRequestBase;
  33 import org.apache.http.config.Registry;
  34 import org.apache.http.config.RegistryBuilder;
  35 import org.apache.http.conn.socket.ConnectionSocketFactory;
  36 import org.apache.http.conn.socket.PlainConnectionSocketFactory;
  37 import org.apache.http.conn.ssl.NoopHostnameVerifier;
  38 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
  39 import org.apache.http.conn.ssl.TrustStrategy;
  40 import org.apache.http.impl.client.CloseableHttpClient;
  41 import org.apache.http.impl.client.HttpClients;
  42 import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
  43 import org.apache.http.message.BasicNameValuePair;
  44 import org.apache.http.ssl.SSLContextBuilder;
  45 import org.apache.http.util.EntityUtils;
  46 import org.jvnet.hk2.annotations.Service;
  47 import org.onap.holmes.common.exception.CorrelationException;
  48
  49 @Slf4j
  50 @Service
  51 public class HttpsUtils {
  52     private static final String HTTP = "http";
  53     private static final String HTTPS = "https";
  54     private static SSLConnectionSocketFactory sslConnectionSocketFactory = null;
  55     private static PoolingHttpClientConnectionManager connectionManager = null;
  56     private static SSLContextBuilder sslContextBuilder = null;
  57
  58     static{
  59         try {
  60             sslContextBuilder = new SSLContextBuilder();
  61             sslContextBuilder.loadTrustMaterial(null, new TrustStrategy() {
  62                 public boolean isTrusted(X509Certificate[] x509Certificates, String s)
  63                         throws CertificateException {
  64                     return true;
  65                 }
  66             });
  67             sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContextBuilder.build(),
  68                     new String[]{"SSLv2Hello", "SSLv3", "TLSv1", "TLSv1.2"}, null,
  69                     NoopHostnameVerifier.INSTANCE);
  70             Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
  71                     .register(HTTP, new PlainConnectionSocketFactory())
  72                     .register(HTTPS, sslConnectionSocketFactory)
  73                     .build();
  74             connectionManager = new PoolingHttpClientConnectionManager(registry);
  75             connectionManager.setMaxTotal(200);
  76         } catch (Exception e) {
  77             log.error("Failed to initialize the ssl builder: " + e.getMessage(), e);
  78         }
  79     }
  80
  81     public static String post(String url, Map<String, String> header, Map<String, String> param,
  82             HttpEntity entity) throws Exception {
  83         HttpResponse httpResponse = null;
  84         try {
  85             CloseableHttpClient httpClient = getHttpClient();
  86             HttpPost httpPost = getHttpPost(url, header, param, entity);
  87             httpResponse = getHttpResponse(httpClient, httpPost);
  88         } catch (Exception e) {
  89             throw new CorrelationException("Failed to use post method query data from server");
  90         }
  91         return getResponseEntity(httpResponse);
  92     }
  93
  94     public static String get(String url, Map<String, String> header) throws Exception {
  95         HttpResponse httpResponse = null;
  96         CloseableHttpClient httpClient = null;
  97         HttpGet httpGet = null;
  98         String response = "";
  99         try {
 100             httpClient = getHttpClient();
 101             httpGet = getHttpGet(url, header);
 102             httpResponse = getHttpResponse(httpClient, httpGet);
 103             response = getResponseEntity(httpResponse);
 104         } catch (Exception e) {
 105             throw new CorrelationException("Failed to use get method query data from server");
 106         } finally {
 107             if (httpGet != null) {
 108                 httpGet.releaseConnection();
 109             }
 110             if (httpResponse != null) {
 111                 httpClient.close();
 112             }
 113         }
 114         return response;
 115     }
 116
 117     private static HttpPost getHttpPost(String url, Map<String, String> header,
 118             Map<String, String> param, HttpEntity entity) {
 119         HttpPost httpPost = new HttpPost(url);
 120         if (!header.isEmpty()) {
 121             for (Map.Entry<String, String> entry : header.entrySet()) {
 122                 httpPost.addHeader(entry.getKey(), entry.getValue());
 123             }
 124         }
 125         if (!param.isEmpty()) {
 126             List<NameValuePair> formparams = new ArrayList<>();
 127             for (Map.Entry<String, String> entry : param.entrySet()) {
 128                 formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
 129             }
 130             UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(formparams,
 131                     Consts.UTF_8);
 132             httpPost.setEntity(urlEncodedFormEntity);
 133         }
 134         if (entity != null) {
 135             httpPost.setEntity(entity);
 136         }
 137         return httpPost;
 138     }
 139
 140     private static HttpGet getHttpGet(String url, Map<String, String> header) {
 141         HttpGet httpGet = new HttpGet(url);
 142         if (!header.isEmpty()) {
 143             for (Map.Entry<String, String> entry : header.entrySet()) {
 144                 httpGet.addHeader(entry.getKey(), entry.getValue());
 145             }
 146         }
 147         return httpGet;
 148     }
 149
 150     private static String getResponseEntity(HttpResponse httpResponse) throws IOException {
 151         String result = "";
 152         if (httpResponse != null) {
 153             int statusCode = httpResponse.getStatusLine().getStatusCode();
 154             if (statusCode == HttpStatus.SC_OK) {
 155                 HttpEntity resEntity = httpResponse.getEntity();
 156                 result = EntityUtils.toString(resEntity);
 157             }
 158         }
 159         return result;
 160     }
 161
 162     private static HttpResponse getHttpResponse(CloseableHttpClient httpClient, HttpRequestBase httpRequest)
 163             throws Exception {
 164         HttpResponse httpResponse = null;
 165         try {
 166             httpResponse = httpClient.execute(httpRequest);
 167         } catch (Exception e) {
 168             throw new CorrelationException("Failed to get data from server");
 169         }
 170         return httpResponse;
 171     }
 172
 173     private static CloseableHttpClient getHttpClient() throws Exception {
 174         CloseableHttpClient httpClient = HttpClients.custom()
 175                 .setSSLSocketFactory(sslConnectionSocketFactory)
 176                 .setConnectionManager(connectionManager)
 177                 .setConnectionManagerShared(true)
 178                 .build();
 179         return httpClient;
 180     }
 181 }