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.hypervisor.xenserver.resource.wrapper.xenbase;
  
  import java.net.URI;
  import java.util.HashMap;
  import java.util.Set;
  
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.storage.PrimaryStorageDownloadAnswer;
  import com.cloud.agent.api.storage.PrimaryStorageDownloadCommand;
  import com.cloud.hypervisor.xenserver.resource.CitrixResourceBase;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.xensource.xenapi.Connection;
  import com.xensource.xenapi.SR;
  import com.xensource.xenapi.VDI;
  
  @ResourceWrapper(handles =  PrimaryStorageDownloadCommand.class)
  public final class CitrixPrimaryStorageDownloadCommandWrapper extends CommandWrapper<PrimaryStorageDownloadCommand, Answer, CitrixResourceBase> {
  
  
      @Override
      public Answer execute(final PrimaryStorageDownloadCommand command, final CitrixResourceBase citrixResourceBase) {
          final String tmplturl = command.getUrl();
          final String poolName = command.getPoolUuid();
          final int wait = command.getWait();
          try {
              final URI uri = new URI(tmplturl);
              final String tmplpath = uri.getHost() + ":" + uri.getPath();
              final Connection conn = citrixResourceBase.getConnection();
              SR poolsr = null;
              final Set<SR> srs = SR.getByNameLabel(conn, poolName);
              if (srs.size() != 1) {
                  final String msg = "There are " + srs.size() + " SRs with same name: " + poolName;
                  logger.warn(msg);
                  return new PrimaryStorageDownloadAnswer(msg);
              } else {
                  poolsr = srs.iterator().next();
              }
              final String pUuid = poolsr.getUuid(conn);
              final boolean isISCSI = citrixResourceBase.IsISCSI(poolsr.getType(conn));
              final String uuid = citrixResourceBase.copyVhdFromSecondaryStorage(conn, tmplpath, pUuid, wait);
              final VDI tmpl = citrixResourceBase.getVDIbyUuid(conn, uuid);
              final VDI snapshotvdi = tmpl.snapshot(conn, new HashMap<String, String>());
              final String snapshotUuid = snapshotvdi.getUuid(conn);
              snapshotvdi.setNameLabel(conn, "Template " + command.getName());
              final String parentuuid = citrixResourceBase.getVhdParent(conn, pUuid, snapshotUuid, isISCSI);
              final VDI parent = citrixResourceBase.getVDIbyUuid(conn, parentuuid);
              final Long phySize = parent.getPhysicalUtilisation(conn);
              tmpl.destroy(conn);
              poolsr.scan(conn);
              try {
                  Thread.sleep(5000);
              } catch (final Exception e) {
              }
              return new PrimaryStorageDownloadAnswer(snapshotvdi.getUuid(conn), phySize);
          } catch (final Exception e) {
              final String msg = "Catch Exception " + e.getClass().getName() + " on host:" + citrixResourceBase.getHost().getUuid() + " for template: " + tmplturl + " due to "
                      + e.toString();
              logger.warn(msg, e);
              return new PrimaryStorageDownloadAnswer(msg);
          }
      }
  }
  