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.resource;
  
  import java.net.URI;
  import java.net.URLDecoder;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.UUID;
  
  import javax.inject.Inject;
  import javax.naming.ConfigurationException;
  
  
  import com.cloud.agent.AgentManager;
  import com.cloud.agent.Listener;
  import com.cloud.agent.api.AgentControlAnswer;
  import com.cloud.agent.api.AgentControlCommand;
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.Command;
  import com.cloud.agent.api.StartupCommand;
  import com.cloud.agent.api.StartupRoutingCommand;
  import com.cloud.agent.manager.MockAgentManager;
  import com.cloud.agent.manager.MockStorageManager;
  import com.cloud.dc.ClusterVO;
  import com.cloud.exception.ConnectionException;
  import com.cloud.exception.DiscoveryException;
  import com.cloud.host.Host;
  import com.cloud.host.HostVO;
  import com.cloud.host.Status;
  import com.cloud.host.dao.HostDao;
  import com.cloud.hypervisor.Hypervisor.HypervisorType;
  import com.cloud.storage.VMTemplateVO;
  import com.cloud.storage.VMTemplateZoneVO;
  import com.cloud.storage.dao.VMTemplateDao;
  import com.cloud.storage.dao.VMTemplateZoneDao;
  
  public class SimulatorDiscoverer extends DiscovererBase implements Discoverer, Listener, ResourceStateAdapter {
  
      @Inject
      HostDao _hostDao;
      @Inject
      VMTemplateDao _vmTemplateDao;
      @Inject
      VMTemplateZoneDao _vmTemplateZoneDao;
      @Inject
      AgentManager _agentMgr = null;
      @Inject
      MockAgentManager _mockAgentMgr = null;
      @Inject
      MockStorageManager _mockStorageMgr = null;
  
      /**
       * Finds ServerResources of an in-process simulator
       *
       * @see com.cloud.resource.Discoverer#find(long, java.lang.Long,
       *      java.lang.Long, java.net.URI, java.lang.String, java.lang.String)
       */
      @Override
      public Map<? extends ServerResource, Map<String, String>>
          find(long dcId, Long podId, Long clusterId, URI uri, String username, String password, List<String> hostTags) throws DiscoveryException {
          Map<AgentResourceBase, Map<String, String>> resources;
  
          try {
              //http://sim/count=$count, it will add $count number of hosts into the cluster
              String scheme = uri.getScheme();
              String host = uri.getAuthority();
              String commands = URLDecoder.decode(uri.getPath());
  
              long cpuSpeed = MockAgentManager.DEFAULT_HOST_SPEED_MHZ;
              long cpuCores = MockAgentManager.DEFAULT_HOST_CPU_CORES;
              long memory = MockAgentManager.DEFAULT_HOST_MEM_SIZE;
              long localstorageSize = MockStorageManager.DEFAULT_HOST_STORAGE_SIZE;
              String arch = MockAgentManager.DEFAULT_HOST_ARCH;
              if (scheme.equals("http")) {
                  if (host == null || !host.startsWith("sim")) {
                      String msg = "uri is not of simulator type so we're not taking care of the discovery for this: " + uri;
                      if (logger.isDebugEnabled()) {
                          logger.debug(msg);
                      }
                      return null;
                  }
                  if (commands != null) {
                      int index = commands.lastIndexOf("/");
                      if (index != -1) {
                          commands = commands.substring(index + 1);
  
                          String[] cmds = commands.split("&");
                          for (String cmd : cmds) {
                              String[] parameter = cmd.split("=");
                              if (parameter[0].equalsIgnoreCase("cpuspeed") && parameter[1] != null) {
                                  cpuSpeed = Long.parseLong(parameter[1]);
                              } else if (parameter[0].equalsIgnoreCase("cpucore") && parameter[1] != null) {
                                  cpuCores = Long.parseLong(parameter[1]);
                              } else if (parameter[0].equalsIgnoreCase("memory") && parameter[1] != null) {
                                  memory = Long.parseLong(parameter[1]);
                              } else if (parameter[0].equalsIgnoreCase("localstorage") && parameter[1] != null) {
                                  localstorageSize = Long.parseLong(parameter[1]);
                              } else if (parameter[0].equalsIgnoreCase("arch") && parameter[1] != null) {
                                  arch = parameter[1];
                              }
                          }
                      }
                  }
              } else {
                  String msg = "uriString is not http so we're not taking care of the discovery for this: " + uri;
                  if (logger.isDebugEnabled()) {
                      logger.debug(msg);
                  }
                  return null;
              }
  
              String cluster = null;
              if (clusterId == null) {
                  String msg = "must specify cluster Id when adding host";
                  if (logger.isDebugEnabled()) {
                      logger.debug(msg);
                  }
                  throw new RuntimeException(msg);
              } else {
                  ClusterVO clu = _clusterDao.findById(clusterId);
                  if (clu == null || (clu.getHypervisorType() != HypervisorType.Simulator)) {
                      if (logger.isInfoEnabled())
                          logger.info("invalid cluster id or cluster is not for Simulator hypervisors");
                      return null;
                  }
                  cluster = Long.toString(clusterId);
                  if (clu.getGuid() == null) {
                      clu.setGuid(UUID.randomUUID().toString());
                  }
                  _clusterDao.update(clusterId, clu);
              }
  
              String pod;
              if (podId == null) {
                  String msg = "must specify pod Id when adding host";
                  if (logger.isDebugEnabled()) {
                      logger.debug(msg);
                  }
                  throw new RuntimeException(msg);
              } else {
                  pod = Long.toString(podId);
              }
  
              Map<String, String> details = new HashMap<String, String>();
              Map<String, Object> params = new HashMap<String, Object>();
              details.put("username", username);
              params.put("username", username);
              details.put("password", password);
              params.put("password", password);
              params.put("zone", Long.toString(dcId));
              params.put("pod", pod);
              params.put("cluster", cluster);
              params.put("cpuspeed", Long.toString(cpuSpeed));
              params.put("cpucore", Long.toString(cpuCores));
              params.put("memory", Long.toString(memory));
              params.put("localstorage", Long.toString(localstorageSize));
              params.put("arch", arch);
  
              resources = createAgentResources(params);
              return resources;
          } catch (Exception ex) {
              logger.error("Exception when discovering simulator hosts: " + ex.getMessage());
          }
          return null;
      }
  
      private Map<AgentResourceBase, Map<String, String>> createAgentResources(Map<String, Object> params) {
          try {
              logger.info("Creating Simulator Resources");
              return _mockAgentMgr.createServerResources(params);
          } catch (Exception ex) {
              logger.warn("Caught exception at agent resource creation: " + ex.getMessage(), ex);
          }
          return null;
      }
  
      @Override
      public void postDiscovery(List<HostVO> hosts, long msId) {
  
          for (HostVO h : hosts) {
              associateTemplatesToZone(h.getId(), h.getDataCenterId());
          }
      }
  
      private void associateTemplatesToZone(long hostId, long dcId) {
          VMTemplateZoneVO tmpltZone;
  
          List<VMTemplateVO> allTemplates = _vmTemplateDao.listAll();
          for (VMTemplateVO vt : allTemplates) {
              if (vt.isCrossZones()) {
                  tmpltZone = _vmTemplateZoneDao.findByZoneTemplate(dcId, vt.getId());
                  if (tmpltZone == null) {
                      VMTemplateZoneVO vmTemplateZone = new VMTemplateZoneVO(dcId, vt.getId(), new Date());
                      _vmTemplateZoneDao.persist(vmTemplateZone);
                  }
              }
          }
      }
  
      @Override
      public HypervisorType getHypervisorType() {
          return HypervisorType.Simulator;
      }
  
      @Override
      public boolean matchHypervisor(String hypervisor) {
          return hypervisor.equalsIgnoreCase(HypervisorType.Simulator.toString());
      }
  
      @Override
      public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
          super.configure(name, params);
          _agentMgr.registerForHostEvents(this, true, false, false);
          _resourceMgr.registerResourceStateAdapter(this.getClass().getSimpleName(), this);
          return true;
      }
  
      @Override
      public boolean processAnswers(long agentId, long seq, Answer[] answers) {
          return false;
      }
  
      @Override
      public boolean processCommands(long agentId, long seq, Command[] commands) {
          return false;
      }
  
      @Override
      public AgentControlAnswer processControlCommand(long agentId, AgentControlCommand cmd) {
          return null;
      }
  
      @Override
      public void processHostAdded(long hostId) {
      }
  
      @Override
      public void processConnect(Host host, StartupCommand cmd, boolean forRebalance) throws ConnectionException {
      }
  
      @Override
      public boolean processDisconnect(long agentId, Status state) {
          return false;
      }
  
      @Override
      public void processHostAboutToBeRemoved(long hostId) {
      }
  
      @Override
      public void processHostRemoved(long hostId, long clusterId) {
      }
  
      @Override
      public boolean isRecurring() {
          return false;
      }
  
      @Override
      public int getTimeout() {
          return 0;
      }
  
      @Override
      public boolean processTimeout(long agentId, long seq) {
          return false;
      }
  
      @Override
      public HostVO createHostVOForConnectedAgent(HostVO host, StartupCommand[] cmd) {
          return null;
      }
  
      @Override
      public HostVO createHostVOForDirectConnectAgent(HostVO host, StartupCommand[] startup, ServerResource resource, Map<String, String> details, List<String> hostTags) {
          StartupCommand firstCmd = startup[0];
          if (!(firstCmd instanceof StartupRoutingCommand)) {
              return null;
          }
  
          StartupRoutingCommand ssCmd = ((StartupRoutingCommand)firstCmd);
          if (ssCmd.getHypervisorType() != HypervisorType.Simulator) {
              return null;
          }
  
          ssCmd.setGpuDevices(_mockAgentMgr.getGPUDevices(host.getId()));
  
          return _resourceMgr.fillRoutingHostVO(host, ssCmd, HypervisorType.Simulator, details, hostTags);
      }
  
      @Override
      public DeleteHostAnswer deleteHost(HostVO host, boolean isForced, boolean isForceDeleteStorage) throws UnableDeleteHostException {
          return null;
      }
  
      @Override
      public boolean stop() {
          _resourceMgr.unregisterResourceStateAdapter(this.getClass().getSimpleName());
          return super.stop();
      }
  
  }
  