Yafit Hadar | a9a73de | 2015-09-06 13:52:52 +0300 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Laboratory |
Yafit Hadar | a9a73de | 2015-09-06 13:52:52 +0300 | [diff] [blame] | 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.provider.of.device.impl; |
| 17 | |
| 18 | import org.onosproject.net.OduSignalType; |
| 19 | |
| 20 | import com.google.common.collect.BiMap; |
| 21 | import com.google.common.collect.EnumHashBiMap; |
| 22 | |
| 23 | /** |
| 24 | * Collection of helper methods to convert protocol agnostic models to values used in OpenFlow spec. |
| 25 | */ |
| 26 | final class OpenFlowDeviceValueMapper { |
| 27 | |
| 28 | // prohibit instantiation |
| 29 | private OpenFlowDeviceValueMapper() {} |
| 30 | |
| 31 | private static final BiMap<OduSignalType, Byte> ODU_SIGNAL_TYPES = EnumHashBiMap.create(OduSignalType.class); |
| 32 | static { |
| 33 | // See ONF "Optical Transport Protocol Extensions Version 1.0" for the following values |
| 34 | ODU_SIGNAL_TYPES.put(OduSignalType.ODU1, (byte) 1); // OFPODUT_ODU1 of enum ofp_odu_signal_type |
| 35 | ODU_SIGNAL_TYPES.put(OduSignalType.ODU2, (byte) 2); // OFPODUT_ODU2 of enum ofp_odu_signal_type |
| 36 | ODU_SIGNAL_TYPES.put(OduSignalType.ODU3, (byte) 3); // OFPODUT_ODU3 of enum ofp_odu_signal_type |
| 37 | ODU_SIGNAL_TYPES.put(OduSignalType.ODU4, (byte) 4); // OFPODUT_ODU4 of enum ofp_odu_signal_type |
| 38 | ODU_SIGNAL_TYPES.put(OduSignalType.ODU0, (byte) 10); // OFPODUT_ODU0 of enum ofp_odu_signal_type |
| 39 | ODU_SIGNAL_TYPES.put(OduSignalType.ODU2e, (byte) 11); // OFPODUT_ODU2E of enum ofp_odu_signal_type |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Looks up the specified input value to the corresponding value with the specified map. |
| 44 | * |
| 45 | * @param map bidirectional mapping |
| 46 | * @param input input value |
| 47 | * @param cls class of output value |
| 48 | * @param <I> type of input value |
| 49 | * @param <O> type of output value |
| 50 | * @return the corresponding value stored in the specified map |
| 51 | */ |
| 52 | private static <I, O> O lookup(BiMap<I, O> map, I input, Class<O> cls) { |
| 53 | if (!map.containsKey(input)) { |
| 54 | throw new RuntimeException( |
| 55 | String.format("No mapping found for %s when converting to %s", input, cls.getName())); |
| 56 | } |
| 57 | |
| 58 | return map.get(input); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Looks up the the corresponding {@link OduSignalType} instance |
| 63 | * from the specified byte value for ODU signal type defined in |
| 64 | * ONF "Optical Transport Protocol Extensions Version 1.0". |
| 65 | * |
| 66 | * @param signalType byte value as ODU (Optical channel Data Unit) signal type defined the spec |
| 67 | * @return the corresponding OchSignalType instance |
| 68 | */ |
| 69 | static OduSignalType lookupOduSignalType(byte signalType) { |
| 70 | return lookup(ODU_SIGNAL_TYPES.inverse(), signalType, OduSignalType.class); |
| 71 | } |
| 72 | |
| 73 | } |