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.storage.upload;
  
  
  import com.cloud.agent.api.storage.UploadAnswer;
  import com.cloud.agent.api.storage.UploadProgressCommand.RequestType;
  import com.cloud.storage.VMTemplateStorageResourceAssoc.Status;
  import org.apache.logging.log4j.Level;
  
  public abstract class UploadActiveState extends UploadState {
  
      public UploadActiveState(UploadListener ul) {
          super(ul);
      }
  
      @Override
      public String handleAbort() {
          return Status.ABANDONED.toString();
      }
  
      @Override
      public String handleDisconnect() {
  
          return Status.UPLOAD_ERROR.toString();
      }
  
      @Override
      public String handleAnswer(UploadAnswer answer) {
          if (logger.isDebugEnabled()) {
              logger.debug("handleAnswer, answer status=" + answer.getUploadStatus() + ", curr state=" + getName());
          }
          switch (answer.getUploadStatus()) {
          case UPLOAD_IN_PROGRESS:
              getUploadListener().scheduleStatusCheck(RequestType.GET_STATUS);
              return Status.UPLOAD_IN_PROGRESS.toString();
          case UPLOADED:
              getUploadListener().scheduleImmediateStatusCheck(RequestType.PURGE);
              getUploadListener().cancelTimeoutTask();
              return Status.UPLOADED.toString();
          case NOT_UPLOADED:
              getUploadListener().scheduleStatusCheck(RequestType.GET_STATUS);
              return Status.NOT_UPLOADED.toString();
          case UPLOAD_ERROR:
              getUploadListener().cancelStatusTask();
              getUploadListener().cancelTimeoutTask();
              return Status.UPLOAD_ERROR.toString();
          case UNKNOWN:
              getUploadListener().cancelStatusTask();
              getUploadListener().cancelTimeoutTask();
              return Status.UPLOAD_ERROR.toString();
          default:
              return null;
          }
      }
  
      @Override
      public String handleTimeout(long updateMs) {
          if (logger.isTraceEnabled()) {
              getUploadListener().log("handleTimeout, updateMs=" + updateMs + ", curr state= " + getName(), Level.TRACE);
          }
          String newState = getName();
          if (updateMs > 5 * UploadListener.STATUS_POLL_INTERVAL) {
              newState = Status.UPLOAD_ERROR.toString();
              getUploadListener().log("timeout: transitioning to upload error state, currstate=" + getName(), Level.DEBUG);
          } else if (updateMs > 3 * UploadListener.STATUS_POLL_INTERVAL) {
              getUploadListener().cancelStatusTask();
              getUploadListener().scheduleImmediateStatusCheck(RequestType.GET_STATUS);
              getUploadListener().scheduleTimeoutTask(3 * UploadListener.STATUS_POLL_INTERVAL);
              getUploadListener().log(getName() + " first timeout: checking again ", Level.DEBUG);
          } else {
              getUploadListener().scheduleTimeoutTask(3 * UploadListener.STATUS_POLL_INTERVAL);
          }
          return newState;
      }
  
      @Override
      public void onEntry(String prevState, UploadEvent event, Object evtObj) {
          super.onEntry(prevState, event, evtObj);
  
          if (event == UploadEvent.UPLOAD_ANSWER) {
              getUploadListener().setLastUpdated();
          }
  
      }
  
      @Override
      public void onExit() {
      }
  }
  