content: // Licensed to the Apache Software Foundation (ASF) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The ASF licenses this file
  // to you under the Apache License, Version 2.0 (the
  // "License"); you may not use this file except in compliance
  // with the License.  You may obtain a copy of the License at
  //
  //   http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing,
  // software distributed under the License is distributed on an
  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  // KIND, either express or implied.  See the License for the
  // specific language governing permissions and limitations
  // under the License.
  package com.cloud.api;
  
  import java.lang.reflect.Type;
  import java.util.Map;
  
  import javax.inject.Inject;
  
  import org.apache.cloudstack.api.ApiConstants;
  import org.apache.cloudstack.api.ApiErrorCode;
  import org.apache.cloudstack.api.BaseAsyncCmd;
  import org.apache.cloudstack.api.BaseAsyncCreateCmd;
  import org.apache.cloudstack.api.ServerApiException;
  import org.apache.cloudstack.api.response.ExceptionResponse;
  import org.apache.cloudstack.context.CallContext;
  import org.apache.cloudstack.framework.jobs.AsyncJob;
  import org.apache.cloudstack.framework.jobs.AsyncJobDispatcher;
  import org.apache.cloudstack.framework.jobs.AsyncJobManager;
  import org.apache.cloudstack.jobs.JobInfo;
  
  import com.cloud.exception.InvalidParameterValueException;
  import com.cloud.user.Account;
  import com.cloud.user.User;
  import com.cloud.utils.component.AdapterBase;
  import com.cloud.utils.component.ComponentContext;
  import com.cloud.utils.db.EntityManager;
  import com.google.gson.Gson;
  import com.google.gson.reflect.TypeToken;
  
  public class ApiAsyncJobDispatcher extends AdapterBase implements AsyncJobDispatcher {
  
      @Inject
      private ApiDispatcher _dispatcher;
  
      @Inject
      private AsyncJobManager _asyncJobMgr;
      @Inject
      private EntityManager _entityMgr;
  
      public ApiAsyncJobDispatcher() {
      }
  
      @Override
      public void runJob(final AsyncJob job) {
          BaseAsyncCmd cmdObj = null;
          try {
              Class<?> cmdClass = Class.forName(job.getCmd());
              cmdObj = (BaseAsyncCmd)cmdClass.newInstance();
              cmdObj = ComponentContext.inject(cmdObj);
              cmdObj.configure();
              cmdObj.setJob(job);
  
              Type mapType = new TypeToken<Map<String, String>>() {
              }.getType();
              Gson gson = ApiGsonHelper.getBuilder().create();
              Map<String, String> params = gson.fromJson(job.getCmdInfo(), mapType);
  
              // whenever we deserialize, the UserContext needs to be updated
              String userIdStr = params.get("ctxUserId");
              String acctIdStr = params.get("ctxAccountId");
              String contextDetails = params.get("ctxDetails");
  
              Long userId = null;
              Account accountObject = null;
  
              if (cmdObj instanceof BaseAsyncCreateCmd) {
                  BaseAsyncCreateCmd create = (BaseAsyncCreateCmd)cmdObj;
                  create.setEntityId(Long.parseLong(params.get("id")));
                  create.setEntityUuid(params.get("uuid"));
              }
  
              User user = null;
              if (userIdStr != null) {
                  userId = Long.parseLong(userIdStr);
                  user = _entityMgr.findById(User.class, userId);
              }
  
              if (acctIdStr != null) {
                  accountObject = _entityMgr.findById(Account.class, Long.parseLong(acctIdStr));
              }
  
              CallContext ctx = CallContext.register(user, accountObject);
              if(contextDetails != null){
                  Type objectMapType = new TypeToken<Map<Object, Object>>() {}.getType();
                  ctx.putContextParameters((Map<Object, Object>) gson.fromJson(contextDetails, objectMapType));
              }
  
              String httpmethod = params.get(ApiConstants.HTTPMETHOD);
              if (httpmethod != null) {
                  cmdObj.setHttpMethod(httpmethod);
              }
  
              try {
                  // dispatch could ultimately queue the job
                  _dispatcher.dispatch(cmdObj, params, true);
  
                  // serialize this to the async job table
                  _asyncJobMgr.completeAsyncJob(job.getId(), JobInfo.Status.SUCCEEDED, 0, ApiSerializerHelper.toSerializedString(cmdObj.getResponseObject()));
              } catch (InvalidParameterValueException ipve) {
                  throw new ServerApiException(ApiErrorCode.PARAM_ERROR, ipve.getMessage());
              } finally {
                  CallContext.unregister();
              }
          } catch (Throwable e) {
              String errorMsg = null;
              int errorCode = ApiErrorCode.INTERNAL_ERROR.getHttpCode();
              if (!(e instanceof ServerApiException)) {
                  logger.error("Unexpected exception while executing " + job.getCmd(), e);
                  errorMsg = e.getMessage();
              } else {
                  ServerApiException sApiEx = (ServerApiException)e;
                  errorMsg = sApiEx.getDescription();
                  errorCode = sApiEx.getErrorCode().getHttpCode();
              }
  
              ExceptionResponse response = new ExceptionResponse();
              response.setErrorCode(errorCode);
              response.setErrorText(errorMsg);
              response.setResponseName((cmdObj == null) ? "unknowncommandresponse" : cmdObj.getCommandName());
  
              _asyncJobMgr.completeAsyncJob(job.getId(), JobInfo.Status.FAILED, errorCode, ApiSerializerHelper.toSerializedString(response));
          }
      }
  }
  