Define a Criterion for OchSignal

Resolve ONOS-1844

Change-Id: I775a64ad6d6d3f1a046a6f7895a412c71c17ff16

@@ -15,6 +15,8 @@
  */
 package org.onosproject.net.flow.criteria;
 
+import org.onosproject.net.Lambda;
+import org.onosproject.net.OchSignal;
 import org.onosproject.net.PortNumber;
 import org.onosproject.net.flow.criteria.Criterion.Type;
 import org.onlab.packet.IpPrefix;
@@ -362,6 +364,20 @@ public final class Criteria {
     }
 
     /**
+     * Creates a match on lambda using the specified value.
+     *
+     * @param lambda lambda
+     * @return match criterion
+     */
+    public static Criterion matchLambda(Lambda lambda) {
+        if (lambda instanceof OchSignal) {
+            return new OchSignalCriterion((OchSignal) lambda);
+        } else {
+            throw new UnsupportedOperationException(String.format("Unsupported type of Lambda: %s", lambda));
+        }
+    }
+
+    /**
      * Creates a match on optical signal type using the specified value.
      *
      * @param sigType optical signal type (8 bits unsigned integer)

+/*
+ * Copyright 2015 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.net.flow.criteria;
+
+import com.google.common.base.MoreObjects;
+import org.onosproject.net.OchSignal;
+
+import java.util.Objects;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Implementation of OCh (Optical Channel) signal criterion.
+ * This criterion is based on the specification of "OFPXMT_EXP_OCH_SIGID" in
+ * Open Networking Foundation "Optical Transport Protocol Extension Version 1.0", but
+ * defined in protocol agnostic way.
+ */
+public final class OchSignalCriterion implements Criterion {
+
+    private final OchSignal lambda;
+
+    /**
+     * Create an instance with the specified OCh signal.
+     *
+     * @param lambda OCh signal
+     */
+    OchSignalCriterion(OchSignal lambda) {
+        this.lambda = checkNotNull(lambda);
+    }
+
+    @Override
+    public Type type() {
+        return Type.OCH_SIGID;
+    }
+
+    /**
+     * Returns the OCh signal to match.
+     *
+     * @return the OCh signal to match
+     */
+    public OchSignal lambda() {
+        return lambda;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(lambda);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!(obj instanceof OchSignalCriterion)) {
+            return false;
+        }
+        final OchSignalCriterion that = (OchSignalCriterion) obj;
+        return Objects.equals(this.lambda, that.lambda);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("lambda", lambda)
+                .toString();
+    }
+}

@@ -16,6 +16,9 @@
 package org.onosproject.net.flow.criteria;
 
 import org.junit.Test;
+import org.onosproject.net.ChannelSpacing;
+import org.onosproject.net.GridType;
+import org.onosproject.net.Lambda;
 import org.onosproject.net.PortNumber;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.Ip6Address;
@@ -223,6 +226,13 @@ public class CriteriaTest {
     Criterion sameAsMatchSignalLambda1 = Criteria.matchOpticalSignalType(signalLambda1);
     Criterion matchSignalLambda2 = Criteria.matchOpticalSignalType(signalLambda2);
 
+    Criterion matchOchSignal1 =
+            Criteria.matchLambda(Lambda.ochSignal(GridType.DWDM, ChannelSpacing.CHL_100GHZ, 4, 8));
+    Criterion sameAsMatchOchSignal1 =
+            Criteria.matchLambda(Lambda.ochSignal(GridType.DWDM, ChannelSpacing.CHL_100GHZ, 4, 8));
+    Criterion matchOchSignal2 =
+            Criteria.matchLambda(Lambda.ochSignal(GridType.DWDM, ChannelSpacing.CHL_50GHZ, 4, 8));
+
     /**
      * Checks that a Criterion object has the proper type, and then converts
      * it to the proper type.
@@ -1027,6 +1037,14 @@ public class CriteriaTest {
                 .testEquals();
     }
 
+    @Test
+    public void testOchSignalCriterionEquals() {
+        new EqualsTester()
+                .addEqualityGroup(matchOchSignal1, sameAsMatchOchSignal1)
+                .addEqualityGroup(matchOchSignal2)
+                .testEquals();
+    }
+
     // OpticalSignalTypeCriterion class
 
     /**

@@ -100,6 +100,7 @@ import org.onosproject.net.flow.criteria.Icmpv6TypeCriterion;
 import org.onosproject.net.flow.criteria.LambdaCriterion;
 import org.onosproject.net.flow.criteria.MetadataCriterion;
 import org.onosproject.net.flow.criteria.MplsCriterion;
+import org.onosproject.net.flow.criteria.OchSignalCriterion;
 import org.onosproject.net.flow.criteria.OpticalSignalTypeCriterion;
 import org.onosproject.net.flow.criteria.PortCriterion;
 import org.onosproject.net.flow.criteria.SctpPortCriterion;
@@ -290,6 +291,7 @@ public final class KryoNamespaces {
                     MplsCriterion.class,
                     IPv6ExthdrFlagsCriterion.class,
                     LambdaCriterion.class,
+                    OchSignalCriterion.class,
                     OpticalSignalTypeCriterion.class,
                     Criterion.class,
                     Criterion.Type.class,