| /* |
| * Copyright 2016 Open Networking Laboratory |
| * |
| * Licensed 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 org.onosproject.driver.query; |
| |
| import org.onosproject.net.ChannelSpacing; |
| import org.onosproject.net.OchSignal; |
| import org.onosproject.net.OmsPort; |
| import org.onosproject.net.Port; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.behaviour.LambdaQuery; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| import java.util.stream.IntStream; |
| |
| /** |
| * Lambda query implementation for OFOpticalSwitch13. |
| * |
| * Note: Standard (ONF TS-022, March 15, 2015) does not support negative values for spacingMultiplier in exp_OCH_sigid. |
| * Thus, Lambda values cannot be calculated using center and spacingMultiplier of +/- values. |
| * Therefore, Lambda values are calculated with positive values only: starting from min-frequency of 191.7 THz. |
| * |
| * TODO: When standard is fixed - modify queryLambdas accordingly. |
| * |
| * OFOpticalSwitch13 exposes OchSignal resources: 'lambdaCount' lambdas with 50GHz width (fixed grid) |
| * starting from min-frequency of 191.7 THz. |
| */ |
| |
| public class OFOpticalSwitch13LambdaQuery extends AbstractHandlerBehaviour implements LambdaQuery { |
| |
| @Override |
| public Set<OchSignal> queryLambdas(PortNumber port) { |
| DeviceService deviceService = this.handler().get(DeviceService.class); |
| Port p = deviceService.getPort(this.data().deviceId(), port); |
| |
| // Only OMS ports expose lambda resources |
| if (!p.type().equals(Port.Type.OMS)) { |
| return Collections.emptySet(); |
| } |
| |
| short lambdaCount = ((OmsPort) p).totalChannels(); |
| // OMS ports expose 'lambdaCount' fixed grid lambdas of 50GHz width, starting from min-frequency 191.7 THz. |
| return IntStream.rangeClosed(1, lambdaCount) |
| .mapToObj(x -> OchSignal.newDwdmSlot(ChannelSpacing.CHL_50GHZ, x)) |
| .collect(Collectors.toSet()); |
| } |
| } |