msb-core/apiroute/apiroute-service/src/main/java/org/openo/msb/wrapper/MetricsServiceWrapper.java

   1 /**
   2  * Copyright 2016 ZTE Corporation.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.openo.msb.wrapper;
  17
  18 import java.io.IOException;
  19
  20 import org.apache.http.ParseException;
  21 import org.apache.http.client.methods.CloseableHttpResponse;
  22 import org.apache.http.client.methods.HttpGet;
  23 import org.apache.http.impl.client.CloseableHttpClient;
  24 import org.apache.http.impl.client.HttpClients;
  25 import org.apache.http.util.EntityUtils;
  26 import org.openo.msb.api.MetricsInfo;
  27 import org.openo.msb.wrapper.util.MetricsUtil;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
  32 import com.fasterxml.jackson.annotation.PropertyAccessor;
  33 import com.fasterxml.jackson.databind.DeserializationFeature;
  34 import com.fasterxml.jackson.databind.ObjectMapper;
  35
  36 public class MetricsServiceWrapper {
  37
  38         private static final Logger LOGGER = LoggerFactory
  39                         .getLogger(MetricsServiceWrapper.class);
  40
  41         public static MetricsInfo getMetricsInfo() {
  42
  43                 String metricsUrl = MetricsUtil.adminContextPath;
  44                 String metricsJson = sendGetRequest(metricsUrl);
  45
  46                 metricsJson = metricsJson.replace("E_", "");//.replaceAll("(?![0-9])(\\.)(?![0-9])", "_").replace("-", "_")
  47                 ObjectMapper mapper = new ObjectMapper();
  48                 mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
  49                 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,
  50                                 false);
  51                 MetricsInfo metricsInfo = new MetricsInfo();
  52                 try {
  53                         metricsInfo = mapper.readValue(metricsJson, MetricsInfo.class);
  54                 } catch (Exception e) {
  55                         // TODO Auto-generated catch block
  56                         LOGGER.error("Jackson readValue to metricsInfo throw exception", e);
  57                 }
  58
  59                 return metricsInfo;
  60         }
  61
  62         public static String sendGetRequest(String url) {
  63                 CloseableHttpClient httpClient = HttpClients.createDefault();
  64                 HttpGet httpGet = new HttpGet(url);
  65
  66                 try {
  67                         CloseableHttpResponse res = httpClient.execute(httpGet);
  68                         try {
  69                                 if (res.getStatusLine().getStatusCode() == MetricsUtil.SC_OK) {
  70                                         return EntityUtils.toString(res.getEntity());
  71                                 }
  72                         } finally {
  73                                 res.close();
  74                         }
  75                 } catch (ParseException e) {
  76                         LOGGER.error("HttpClient throw ParseException:" + url, e);
  77                 } catch (IOException e) {
  78                         LOGGER.error("HttpClient throw IOException:" + url, e);
  79                 }
  80                 finally{
  81                         try {
  82                                 httpClient.close();
  83                         } catch (IOException e) {
  84                                 // TODO Auto-generated catch block
  85                                 LOGGER.error("HttpClient Close throw IOException", e);
  86                         }
  87                 }
  88
  89                 return null;
  90         }
  91 }