[ODTN] Support of multiple optical bands (L, C, and S band).
- patch 1: first commit
- patch 2: example driver, checkstyle
- patch 3,4,5: checkstyle
- patch 6,7: andrea's comments
Change-Id: I1f872e5df76073f427da8184c4f2a4e18dfbf4bb
diff --git a/core/api/src/main/java/org/onosproject/net/OpticalBandUtils.java b/core/api/src/main/java/org/onosproject/net/OpticalBandUtils.java
new file mode 100644
index 0000000..7f38492
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/OpticalBandUtils.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2023-present Open Networking Foundation
+ *
+ * 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.
+ *
+ * This Work is contributed by CNR within the B5G-OPEN project.
+ */
+
+package org.onosproject.net;
+
+import org.onlab.util.Frequency;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Utils to manage OCH signal on multiple optical bands.
+ * Given an OCH signal it is mapped in one band.
+ * Start and End frequency for each band can be queried.
+ */
+public final class OpticalBandUtils {
+
+ private static final Logger log = LoggerFactory.getLogger(OpticalBandUtils.class);
+ private static final Frequency L_BAND_START_FREQ = Frequency.ofGHz(184500);
+ private static final Frequency L_BAND_STOP_FREQ = Frequency.ofGHz(191500);
+ private static final Frequency C_BAND_START_FREQ = Frequency.ofGHz(191500);
+ private static final Frequency C_BAND_STOP_FREQ = Frequency.ofGHz(195500);
+ private static final Frequency S_BAND_START_FREQ = Frequency.ofGHz(195500);
+ private static final Frequency S_BAND_STOP_FREQ = Frequency.ofGHz(205300);
+
+ // prohibit instantiation
+ private OpticalBandUtils() {}
+ /**
+ * Maps the provided OCH signal on optical band type.
+ *
+ * @param ochSignal signal to be mapped
+ * @return OpticalBandType band
+ */
+ public static OpticalBandType computeOpticalBand(OchSignal ochSignal) {
+ if (L_BAND_START_FREQ.isLessThan(ochSignal.centralFrequency())
+ && L_BAND_STOP_FREQ.isGreaterThan(ochSignal.centralFrequency())) {
+ return OpticalBandType.L_BAND;
+ }
+ if (C_BAND_START_FREQ.isLessThan(ochSignal.centralFrequency())
+ && C_BAND_STOP_FREQ.isGreaterThan(ochSignal.centralFrequency())) {
+ return OpticalBandType.C_BAND;
+ }
+ if (S_BAND_START_FREQ.isLessThan(ochSignal.centralFrequency())
+ && S_BAND_STOP_FREQ.isGreaterThan(ochSignal.centralFrequency())) {
+ return OpticalBandType.S_BAND;
+ }
+ return null;
+ }
+
+ /**
+ * Return the start frequency of the specified band.
+ *
+ * @param bandType band type to be considered
+ * @return Frequency
+ */
+ public static Frequency startFrequency(OpticalBandType bandType) {
+ switch (bandType) {
+ case L_BAND:
+ return L_BAND_START_FREQ;
+ case C_BAND:
+ return C_BAND_START_FREQ;
+ case S_BAND:
+ return S_BAND_START_FREQ;
+ default:
+ log.error("Unsupported OpticalBandType {}", bandType);
+ return null;
+ }
+ }
+
+ /**
+ * Return the end frequency of the specified band.
+ *
+ * @param bandType band type to be considered
+ * @return Frequency
+ */
+ public static Frequency stopFrequency(OpticalBandType bandType) {
+ switch (bandType) {
+ case L_BAND:
+ return L_BAND_STOP_FREQ;
+ case C_BAND:
+ return C_BAND_STOP_FREQ;
+ case S_BAND:
+ return S_BAND_STOP_FREQ;
+ default:
+ log.error("Unsupported OpticalBandType {}", bandType);
+ return null;
+ }
+ }
+}