[ONOS-3116] Port Chain interface for SFC
Change-Id: I7591ca414e63ac4787ca1fb354ea5755b7eedff3
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/PortChain.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/PortChain.java
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+/*
+ * 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.vtnrsc;
+
+import java.util.List;
+
+/**
+ * Abstraction of an entity providing Port Chain information.
+ * A Port Chain (Service Function Path) consists of
+ * a set of Neutron ports, to define the sequence of service functions
+ * a set of flow classifiers, to specify the classified traffic flows to enter the chain
+ */
+public interface PortChain {
+
+ /**
+ * Returns the ID of this port chain.
+ *
+ * @return the port chain id
+ */
+ PortChainId portChainId();
+
+ /**
+ * Returns the tenant id of this port chain.
+ *
+ * @return the tenant id
+ */
+ TenantId tenantId();
+
+ /**
+ * Returns the name of this port chain.
+ *
+ * @return name of port chain
+ */
+ String name();
+
+ /**
+ * Returns the description of this port chain.
+ *
+ * @return description of port chain
+ */
+ String description();
+
+ /**
+ * Returns the list of port pair groups associated with
+ * this port chain.
+ *
+ * @return list of port pair groups
+ */
+ List<PortPairGroupId> portPairGroups();
+
+ /**
+ * Returns the list of flow classifiers associated with
+ * this port chain.
+ *
+ * @return list of flow classifiers
+ */
+ List<FlowClassifierId> flowClassifiers();
+
+ /**
+ * Returns whether this port chain is an exact match to the port chain given
+ * in the argument.
+ * <p>
+ * Exact match means the port pair groups and flow classifiers match
+ * with the given port chain. It does not consider the port chain id, name
+ * and description.
+ * </p>
+ *
+ * @param portChain other port chain to match against
+ * @return true if the port chains are an exact match, otherwise false
+ */
+ boolean exactMatch(PortChain portChain);
+
+ /**
+ * A port chain builder..
+ */
+ interface Builder {
+
+ /**
+ * Assigns the port chain id to this object.
+ *
+ * @param portChainId the port chain id
+ * @return this the builder object
+ */
+ Builder setId(PortChainId portChainId);
+
+ /**
+ * Assigns tenant id to this object.
+ *
+ * @param tenantId tenant id of the port chain
+ * @return this the builder object
+ */
+ Builder setTenantId(TenantId tenantId);
+
+ /**
+ * Assigns the name to this object.
+ *
+ * @param name name of the port chain
+ * @return this the builder object
+ */
+ Builder setName(String name);
+
+ /**
+ * Assigns the description to this object.
+ *
+ * @param description description of the port chain
+ * @return this the builder object
+ */
+ Builder setDescription(String description);
+
+ /**
+ * Assigns the port pair groups associated with the port chain
+ * to this object.
+ *
+ * @param portPairGroups list of port pair groups
+ * @return this the builder object
+ */
+ Builder setPortPairGroups(List<PortPairGroupId> portPairGroups);
+
+ /**
+ * Assigns the flow classifiers associated with the port chain
+ * to this object.
+ *
+ * @param flowClassifiers list of flow classifiers
+ * @return this the builder object
+ */
+ Builder setFlowClassifiers(List<FlowClassifierId> flowClassifiers);
+
+ /**
+ * Builds a port chain object.
+ *
+ * @return a port chain.
+ */
+ PortChain build();
+ }
+}