gerrit.opnfv Code Review - onosfw.git/blob

   1 /*
   2  * Copyright 2015 Open Networking Laboratory
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onosproject.net.newresource.impl;
  17
  18 import com.google.common.annotations.Beta;
  19 import org.apache.felix.scr.annotations.Activate;
  20 import org.apache.felix.scr.annotations.Component;
  21 import org.apache.felix.scr.annotations.Deactivate;
  22 import org.apache.felix.scr.annotations.Reference;
  23 import org.apache.felix.scr.annotations.ReferenceCardinality;
  24 import org.onosproject.net.device.DeviceListener;
  25 import org.onosproject.net.device.DeviceService;
  26 import org.onosproject.net.driver.DriverService;
  27 import org.onosproject.net.link.LinkListener;
  28 import org.onosproject.net.link.LinkService;
  29 import org.onosproject.net.newresource.ResourceAdminService;
  30
  31 import java.util.concurrent.ExecutorService;
  32 import java.util.concurrent.Executors;
  33
  34 import static org.onlab.util.Tools.groupedThreads;
  35
  36 /**
  37  * A class registering resources when they are detected.
  38  */
  39 @Component(immediate = true)
  40 @Beta
  41 public final class ResourceRegistrar {
  42
  43     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
  44     protected ResourceAdminService adminService;
  45
  46     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
  47     protected DriverService driverService;
  48
  49     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
  50     protected DeviceService deviceService;
  51
  52     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
  53     protected LinkService linkService;
  54
  55     private DeviceListener deviceListener;
  56     private LinkListener linkListener;
  57     private final ExecutorService executor =
  58             Executors.newSingleThreadExecutor(groupedThreads("onos/resource", "registrar"));
  59
  60     @Activate
  61     public void activate() {
  62         deviceListener = new ResourceDeviceListener(adminService, executor);
  63         deviceService.addListener(deviceListener);
  64         linkListener = new ResourceLinkListener(adminService, driverService, executor);
  65         linkService.addListener(linkListener);
  66     }
  67
  68     @Deactivate
  69     public void deactivate() {
  70         deviceService.removeListener(deviceListener);
  71         linkService.removeListener(linkListener);
  72     }
  73 }