| /* |
| * Copyright 2016-present 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.optical.query; |
| |
| import org.onlab.util.GuavaCollectors; |
| import org.onlab.util.Spectrum; |
| import org.onosproject.net.ChannelSpacing; |
| import org.onosproject.net.GridType; |
| import org.onosproject.net.OchSignal; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.behaviour.LambdaQuery; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| |
| import java.util.Set; |
| import java.util.stream.IntStream; |
| |
| /** |
| * Lambda query implementation for Oplink optical protection switch. |
| * |
| * An Oplink optical protection switch supports min bandwidth 6.25Hz (flex grid). |
| * Usable optical spectrum range is U to O band, see {@link Spectrum} for spectrum definitions. |
| */ |
| public class OplinkSwitchLambdaQuery extends AbstractHandlerBehaviour implements LambdaQuery { |
| |
| @Override |
| public Set<OchSignal> queryLambdas(PortNumber port) { |
| // Wavelength range: 1260 - 1675 nm |
| long startSpacingMultiplier = Spectrum.U_BAND_MIN.subtract(Spectrum.CENTER_FREQUENCY).asHz() / |
| ChannelSpacing.CHL_6P25GHZ.frequency().asHz(); |
| long stopSpacingMultiplier = Spectrum.O_BAND_MAX.subtract(Spectrum.CENTER_FREQUENCY).asHz() / |
| ChannelSpacing.CHL_6P25GHZ.frequency().asHz(); |
| |
| // Only consider odd values for the multiplier (for easy mapping to fixed grid) |
| return IntStream.rangeClosed((int) startSpacingMultiplier, (int) stopSpacingMultiplier) |
| .mapToObj(x -> new OchSignal(GridType.FLEX, ChannelSpacing.CHL_6P25GHZ, x, 1)) |
| .collect(GuavaCollectors.toImmutableSet()); |
| } |
| } |