asdc-controller/src/main/java/org/openecomp/mso/asdc/healthcheck/HealthCheckHandler.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP - SO
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.mso.asdc.healthcheck;
  22
  23
  24 import javax.ws.rs.GET;
  25 import javax.ws.rs.HEAD;
  26 import javax.ws.rs.Path;
  27 import javax.ws.rs.Produces;
  28 import javax.ws.rs.QueryParam;
  29 import javax.ws.rs.core.Response;
  30
  31 import org.apache.http.HttpStatus;
  32 import org.openecomp.mso.HealthCheckUtils;
  33 import org.openecomp.mso.logger.MessageEnum;
  34 import org.openecomp.mso.logger.MsoLogger;
  35 import org.openecomp.mso.properties.MsoJsonProperties;
  36 import org.openecomp.mso.properties.MsoPropertiesFactory;
  37 import org.openecomp.mso.utils.UUIDChecker;
  38
  39
  40 @Path("/")
  41         public class HealthCheckHandler {
  42
  43                 private static MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.ASDC);
  44                 private static final String MSO_PROP_ASDC = "MSO_PROP_ASDC";
  45                 private static MsoPropertiesFactory msoPropertiesFactory = new MsoPropertiesFactory();
  46
  47                 private static final String SUC_HTML = "<!DOCTYPE html><html><head><meta charset=\"ISO-8859-1\"><title>Health Check</title></head><body>Application ready</body></html>";
  48                 private static final String NOT_FOUND = "<!DOCTYPE html><html><head><meta charset=\"ISO-8859-1\"><title>Application Not Ready</title></head><body>Application Not Ready. Properties file missing or invalid or database Connection failed</body></html>";
  49
  50                 private static final Response OK_RESPONSE = Response.status (HttpStatus.SC_OK).entity (SUC_HTML).build ();
  51                 private static final Response NOK_RESPONSE = Response.status (HttpStatus.SC_SERVICE_UNAVAILABLE).entity (NOT_FOUND).build ();
  52
  53                 @HEAD
  54             @GET
  55             @Path("/healthcheck")
  56             @Produces("text/html")
  57             public Response healthcheck (@QueryParam("requestId") String requestId) {
  58                         long startTime = System.currentTimeMillis ();
  59                         MsoLogger.setServiceName ("Healthcheck");
  60                         UUIDChecker.verifyOldUUID(requestId, msoLogger);
  61                         HealthCheckUtils healthCheck = new HealthCheckUtils ();
  62                         if (!healthCheck.siteStatusCheck(msoLogger, startTime)) {
  63                                 return HealthCheckUtils.HEALTH_CHECK_NOK_RESPONSE;
  64                         }
  65
  66                         MsoJsonProperties props = loadMsoProperties ();
  67                         if (props == null) {
  68                                 msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.ERROR, MsoLogger.ResponseCode.ServiceNotAvailable, "Application Not Ready");
  69                                 return HealthCheckUtils.NOT_STARTED_RESPONSE;
  70                         }
  71
  72                         if (!healthCheck.catalogDBCheck (msoLogger, startTime)) {
  73                                 return HealthCheckUtils.NOT_STARTED_RESPONSE;
  74                         }
  75                         msoLogger.debug("healthcheck - Successful");
  76                         return HealthCheckUtils.HEALTH_CHECK_RESPONSE;
  77             }
  78
  79                 private MsoJsonProperties loadMsoProperties () {
  80                         MsoJsonProperties msoProperties;
  81                         try {
  82                                 msoProperties = msoPropertiesFactory.getMsoJsonProperties(MSO_PROP_ASDC);
  83                         } catch (Exception e) {
  84                                 msoLogger.error (MessageEnum.ASDC_PROPERTIES_NOT_FOUND, MSO_PROP_ASDC, "", "", MsoLogger.ErrorCode.DataError, "Exception - getMsoJsonProperties", e);
  85                                 return null;
  86                         }
  87
  88                         if (msoProperties !=null && msoProperties.getJsonRootNode().elements().hasNext()) {
  89                                 return msoProperties;
  90                         } else {
  91                                 msoLogger.error (MessageEnum.ASDC_PROPERTIES_NOT_FOUND , MSO_PROP_ASDC, "", "", MsoLogger.ErrorCode.DataError, "ASDC properties not found");
  92                                 return  null;
  93                         }
  94                 }
  95 }