gerrit.onap Code Review - dcaegen2/services/sdk.git/blob

   1 /*
   2  * ============LICENSE_START====================================
   3  * DCAEGEN2-SERVICES-SDK
   4  * =========================================================
   5  * Copyright (C) 2019 Nokia. 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.onap.dcaegen2.services.sdk.standardization.moher.adapters.springwebflux;
  22
  23 import com.google.gson.Gson;
  24 import com.google.gson.GsonBuilder;
  25 import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.AliveMessage;
  26 import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.GsonAdaptersHealth;
  27 import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.Health;
  28 import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.HealthProvider;
  29 import org.springframework.http.HttpStatus;
  30 import org.springframework.http.MediaType;
  31 import org.springframework.http.ResponseEntity;
  32 import org.springframework.web.bind.annotation.GetMapping;
  33 import org.springframework.web.bind.annotation.RequestMapping;
  34 import org.springframework.web.bind.annotation.RestController;
  35 import reactor.core.publisher.Mono;
  36
  37 @RestController
  38 @RequestMapping(value = "/health", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
  39 public class HealthController {
  40     private final Gson gson;
  41     private final HealthProvider healthProvider;
  42
  43     public static HealthController create(HealthProvider healthProvider) {
  44         GsonBuilder gson = new GsonBuilder();
  45         gson.registerTypeAdapterFactory(new GsonAdaptersHealth());
  46         return new HealthController(gson.create(), healthProvider);
  47     }
  48
  49     public HealthController(Gson gson, HealthProvider healthProvider) {
  50         this.gson = gson;
  51         this.healthProvider = healthProvider;
  52     }
  53
  54     @GetMapping("/ready")
  55     public Mono<ResponseEntity<String>> readinessCheck() {
  56         return healthProvider.currentHealth()
  57                 .map(health -> responseStatusForHealth(health)
  58                         .contentType(MediaType.APPLICATION_JSON_UTF8)
  59                         .body(gson.toJson(health)));
  60     }
  61
  62     @GetMapping("/alive")
  63     public Mono<String> livenessCheck() {
  64         return Mono.just(AliveMessage.ALIVE_MESSAGE_JSON);
  65     }
  66
  67     private ResponseEntity.BodyBuilder responseStatusForHealth(Health health) {
  68         return health.healthy()
  69                 ? ResponseEntity.ok()
  70                 : ResponseEntity.status(HttpStatus.SERVICE_UNAVAILABLE);
  71     }
  72 }