catalog-fe/src/main/java/org/openecomp/sdc/fe/servlets/ConfigServlet.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   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.sdc.fe.servlets;
  22
  23 import java.util.concurrent.TimeUnit;
  24
  25 import javax.servlet.ServletContext;
  26 import javax.servlet.http.HttpServletRequest;
  27 import javax.ws.rs.GET;
  28 import javax.ws.rs.Path;
  29 import javax.ws.rs.Produces;
  30 import javax.ws.rs.container.AsyncResponse;
  31 import javax.ws.rs.container.Suspended;
  32 import javax.ws.rs.container.TimeoutHandler;
  33 import javax.ws.rs.core.Context;
  34 import javax.ws.rs.core.MediaType;
  35 import javax.ws.rs.core.Response;
  36 import javax.ws.rs.core.Response.Status;
  37
  38 import org.openecomp.sdc.common.api.ConfigurationSource;
  39 import org.openecomp.sdc.common.api.Constants;
  40 import org.openecomp.sdc.common.servlets.BasicServlet;
  41 import org.openecomp.sdc.fe.config.Configuration;
  42 import org.openecomp.sdc.fe.impl.PluginStatusBL;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 /**
  47  * Root resource (exposed at "/" path)
  48  */
  49 @Path("/config")
  50 public class ConfigServlet extends BasicServlet {
  51
  52         private static final long serialVersionUID = 1L;
  53         private static Logger log = LoggerFactory.getLogger(ConfigServlet.class.getName());
  54
  55         //@GET
  56         //@Path("/get")
  57         //@Produces(MediaType.APPLICATION_JSON)
  58         public String getConfig(@Context final HttpServletRequest request) {
  59
  60                 String result = null;
  61
  62                 ServletContext context = request.getSession().getServletContext();
  63
  64                 ConfigurationSource configurationSource = (ConfigurationSource) context
  65                                 .getAttribute(Constants.CONFIGURATION_SOURCE_ATTR);
  66                 if (configurationSource != null) {
  67                         Configuration configuration = configurationSource.getAndWatchConfiguration(Configuration.class, null);
  68
  69                         if (configuration == null) {
  70                                 log.warn("Configuration of type {} was not found", Configuration.class);
  71                         }
  72                         log.debug("{}", configuration);
  73                         if (log.isInfoEnabled()) {
  74                                 log.info("Info level ENABLED...");
  75                         }
  76                         log.info("The value returned from getConfig is {}", configuration);
  77
  78                         result = gson.toJson(configuration);
  79
  80                 } else {
  81                         log.warn("Source Configuration object was not initialized in the context.");
  82                 }
  83
  84                 return result;
  85
  86         }
  87
  88         //@GET
  89         //@Path("/asyncget")
  90         public void asyncGet(@Suspended final AsyncResponse asyncResponse) {
  91
  92                 asyncResponse.setTimeoutHandler(new TimeoutHandler() {
  93
  94                         @Override
  95                         public void handleTimeout(AsyncResponse asyncResponse) {
  96                                 asyncResponse.resume(
  97                                                 Response.status(Response.Status.SERVICE_UNAVAILABLE).entity("Operation time out.").build());
  98                         }
  99                 });
 100                 asyncResponse.setTimeout(3, TimeUnit.SECONDS);
 101
 102                 new Thread(new Runnable() {
 103                         @Override
 104                         public void run() {
 105                                 String result = veryExpensiveOperation();
 106                                 asyncResponse.resume(result);
 107                         }
 108
 109                         private String veryExpensiveOperation() {
 110
 111                                 return "veryExpensiveOperation SUCCESS";
 112
 113                         }
 114                 }).start();
 115         }
 116
 117         @GET
 118         @Path("/ui/plugins")
 119         @Produces(MediaType.APPLICATION_JSON)
 120         public Response getPluginsConfiguration(@Context final HttpServletRequest request) {
 121                 String result = null;
 122
 123                 ServletContext context = request.getSession().getServletContext();
 124
 125                 PluginStatusBL pluginStatusBL = (PluginStatusBL) context.getAttribute(Constants.PLUGIN_BL_COMPONENT);
 126
 127                 result = pluginStatusBL.checkPluginsListAvailability();
 128
 129                 return Response.status(Status.OK).entity(result).build();
 130
 131         }
 132 }