mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/GlobalHealthcheckHandler.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP - SO
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Modifications Copyright (c) 2019 Samsung
   8  * ================================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  * ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.so.apihandlerinfra;
  24
  25
  26 import java.net.URI;
  27 import java.util.Collections;
  28
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31 import org.springframework.http.MediaType;
  32 import org.springframework.http.ResponseEntity;
  33
  34 import javax.annotation.PostConstruct;
  35 import javax.transaction.Transactional;
  36 import javax.ws.rs.DefaultValue;
  37 import javax.ws.rs.GET;
  38 import javax.ws.rs.Path;
  39 import javax.ws.rs.Produces;
  40 import javax.ws.rs.QueryParam;
  41 import javax.ws.rs.container.ContainerRequestContext;
  42 import javax.ws.rs.core.Context;
  43 import javax.ws.rs.core.Response;
  44 import javax.ws.rs.core.UriBuilder;
  45
  46 import org.apache.http.HttpStatus;
  47 import org.onap.so.logger.MessageEnum;
  48 import org.springframework.beans.factory.annotation.Autowired;
  49 import org.springframework.core.env.Environment;
  50 import org.springframework.http.HttpEntity;
  51 import org.springframework.http.HttpHeaders;
  52 import org.springframework.stereotype.Component;
  53 import org.springframework.web.client.RestTemplate;
  54 import org.springframework.http.HttpMethod;
  55 import io.swagger.annotations.Api;
  56 import io.swagger.annotations.ApiOperation;
  57
  58
  59 @Component
  60 @Path("/globalhealthcheck")
  61 @Api(value="/globalhealthcheck",description="APIH Infra Global Health Check")
  62 public class GlobalHealthcheckHandler {
  63         private static Logger logger = LoggerFactory.getLogger(GlobalHealthcheckHandler.class);
  64         private static final String CONTEXTPATH_PROPERTY = "management.context-path";
  65         private static final String PROPERTY_DOMAIN = "mso.health.endpoints";
  66         private static final String CATALOGDB_PROPERTY = PROPERTY_DOMAIN + ".catalogdb";
  67         private static final String REQUESTDB_PROPERTY = PROPERTY_DOMAIN + ".requestdb";
  68         private static final String SDNC_PROPERTY = PROPERTY_DOMAIN + ".sdnc";
  69         private static final String OPENSTACK_PROPERTY = PROPERTY_DOMAIN + ".openstack";
  70         private static final String BPMN_PROPERTY = PROPERTY_DOMAIN + ".bpmn";
  71         private static final String ASDC_PROPERTY = PROPERTY_DOMAIN + ".asdc";
  72         private static final String REQUESTDBATTSVC_PROPERTY = PROPERTY_DOMAIN + ".requestdbattsvc";
  73         private static final String DEFAULT_PROPERTY_VALUE = "";
  74
  75     // e.g. /manage
  76     private String actuatorContextPath;
  77         private String endpointCatalogdb;
  78         private String endpointRequestdb;
  79         private String endpointSdnc;
  80         private String endpointOpenstack;
  81         private String endpointBpmn;
  82         private String endpointAsdc;
  83         private String endpointRequestdbAttsvc;
  84
  85         @Autowired
  86         private Environment env;
  87
  88         @Autowired
  89         private RestTemplate restTemplate;
  90         private final String health = "/health";
  91
  92
  93         @PostConstruct
  94         protected void init() {
  95                 actuatorContextPath  = env.getProperty(CONTEXTPATH_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
  96                 endpointCatalogdb  = env.getProperty(CATALOGDB_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
  97                 endpointRequestdb  = env.getProperty(REQUESTDB_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
  98                 endpointSdnc  = env.getProperty(SDNC_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
  99                 endpointOpenstack  = env.getProperty(OPENSTACK_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
 100                 endpointBpmn  = env.getProperty(BPMN_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
 101                 endpointAsdc  = env.getProperty(ASDC_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
 102                 endpointRequestdbAttsvc  = env.getProperty(REQUESTDBATTSVC_PROPERTY, String.class, DEFAULT_PROPERTY_VALUE);
 103         }
 104
 105     @GET
 106     @Produces("application/json")
 107         @ApiOperation(value="Performing global health check",response=Response.class)
 108     @Transactional
 109     public Response globalHealthcheck (@DefaultValue("true") @QueryParam("enableBpmn") boolean enableBpmn,
 110                                                                         @Context ContainerRequestContext requestContext) {
 111         Response HEALTH_CHECK_RESPONSE = null;
 112         // Build internal response object
 113         HealthcheckResponse rsp = new HealthcheckResponse();
 114
 115         try{
 116             // Generated RequestId
 117             String requestId = requestContext.getProperty("requestId").toString();
 118             logger.info("{} {}", MessageEnum.APIH_GENERATED_REQUEST_ID.toString(), requestId);
 119
 120             // set APIH status, this is the main entry point
 121             rsp.setApih(HealthcheckStatus.UP.toString());
 122             // set BPMN
 123             rsp.setBpmn(querySubsystemHealth(MsoSubsystems.BPMN));
 124             // set SDNCAdapter
 125             rsp.setSdncAdapter(querySubsystemHealth(MsoSubsystems.SDNC));
 126             // set ASDCController
 127             rsp.setAsdcController(querySubsystemHealth(MsoSubsystems.ASDC));
 128             // set CatalogDbAdapter
 129             rsp.setCatalogdbAdapter(querySubsystemHealth(MsoSubsystems.CATALOGDB));
 130             // set RequestDbAdapter
 131             rsp.setRequestdbAdapter(querySubsystemHealth(MsoSubsystems.REQUESTDB));
 132             // set OpenStackAdapter
 133             rsp.setOpenstackAdapter(querySubsystemHealth(MsoSubsystems.OPENSTACK));
 134             // set RequestDbAdapterAttSvc
 135             rsp.setRequestdbAdapterAttsvc(querySubsystemHealth(MsoSubsystems.REQUESTDBATT));
 136             // set Message
 137             rsp.setMessage(String.format("HttpStatus: %s", HttpStatus.SC_OK));
 138             logger.info(rsp.toString());
 139
 140             HEALTH_CHECK_RESPONSE = Response.status (HttpStatus.SC_OK)
 141                     .entity (rsp)
 142                     .build ();
 143
 144         }catch (Exception ex){
 145                 logger.error("Exception occurred", ex);
 146                 rsp.setMessage(ex.getMessage());
 147             HEALTH_CHECK_RESPONSE = Response.status (HttpStatus.SC_INTERNAL_SERVER_ERROR)
 148                     .entity (rsp)
 149                     .build ();
 150         }
 151
 152         return HEALTH_CHECK_RESPONSE;
 153     }
 154
 155     protected HttpEntity<String> buildHttpEntityForRequest(){
 156         HttpHeaders headers = new HttpHeaders();
 157         headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
 158         headers.set("Content-Type", "application/json");
 159         HttpEntity<String> entity = new HttpEntity<>("parameters", headers);
 160         return entity;
 161     }
 162
 163     protected String querySubsystemHealth(MsoSubsystems subsystem){
 164         try{
 165             // get port number for the subsystem
 166                 String ept = getEndpointUrlForSubsystemEnum(subsystem);
 167
 168                 // build final endpoint url
 169                         UriBuilder builder = UriBuilder.fromPath(ept).path(actuatorContextPath).path(health);
 170                         URI uri = builder.build();
 171                 logger.info("Calculated URL: {}", uri.toString());
 172
 173             ResponseEntity<SubsystemHealthcheckResponse> result =
 174                         restTemplate.exchange(uri, HttpMethod.GET, buildHttpEntityForRequest(), SubsystemHealthcheckResponse.class);
 175
 176                 return processResponseFromSubsystem(result,subsystem);
 177
 178         }catch(Exception ex){
 179                         logger.error("Exception occured in GlobalHealthcheckHandler.querySubsystemHealth() ", ex);
 180                 return HealthcheckStatus.DOWN.toString();
 181         }
 182     }
 183         protected String processResponseFromSubsystem(ResponseEntity<SubsystemHealthcheckResponse> result, MsoSubsystems subsystem){
 184         if(result == null || result.getStatusCodeValue() != HttpStatus.SC_OK){
 185                 logger.error(String.format("Globalhealthcheck: checking subsystem: %s failed ! result object is: %s",
 186                                 subsystem,
 187                                 result == null? "NULL": result));
 188                 return HealthcheckStatus.DOWN.toString();
 189         }
 190
 191         SubsystemHealthcheckResponse body = result.getBody();
 192
 193                 String status = body.getStatus();
 194                 if("UP".equalsIgnoreCase(status)){
 195                         return HealthcheckStatus.UP.toString();
 196                 }else{
 197                         logger.error("{}, query health endpoint did not return UP status!", subsystem);
 198                         return HealthcheckStatus.DOWN.toString();
 199                 }
 200         }
 201
 202
 203     protected String getEndpointUrlForSubsystemEnum(MsoSubsystems subsystem){
 204         switch (subsystem){
 205         case SDNC:
 206                 return this.endpointSdnc;
 207         case ASDC:
 208                 return this.endpointAsdc;
 209         case BPMN:
 210                 return this.endpointBpmn;
 211         case CATALOGDB:
 212                 return this.endpointCatalogdb;
 213         case OPENSTACK:
 214                 return this.endpointOpenstack;
 215         case REQUESTDB:
 216                 return this.endpointRequestdb;
 217         case REQUESTDBATT:
 218                 return this.endpointRequestdbAttsvc;
 219         default:
 220                 return "";
 221         }
 222     }
 223 }