[ONOS-4612]Update SFC flows inline with the Official OVS NSH patch
Change-Id: If58517841096a939860d88aa78eca7cae46b9935
diff --git a/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/SfcFlowRuleInstallerService.java b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/SfcFlowRuleInstallerService.java
new file mode 100644
index 0000000..caff305
--- /dev/null
+++ b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/SfcFlowRuleInstallerService.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2015-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.sfc.installer;
+
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.NshServicePathId;
+import org.onosproject.vtnrsc.FiveTuple;
+import org.onosproject.vtnrsc.PortChain;
+
+/**
+ * Abstraction of an entity which installs flow classification rules in ovs.
+ */
+public interface SfcFlowRuleInstallerService {
+
+ /**
+ * Install flow classifier.
+ *
+ * @param portChain port-chain
+ * @param nshSpiId service path index identifier
+ * @return connectPoint the network identifier
+ */
+ ConnectPoint installFlowClassifier(PortChain portChain, NshServicePathId nshSpiId);
+
+ /**
+ * Uninstall flow classifier.
+ *
+ * @param portChain port-chain
+ * @param nshSpiId service path index identifier
+ * @return connectPoint the network identifier
+ */
+ ConnectPoint unInstallFlowClassifier(PortChain portChain, NshServicePathId nshSpiId);
+
+ /**
+ * Install load balanced flow rules.
+ *
+ * @param portChain port-chain
+ * @param fiveTuple five tuple packet information
+ * @param nshSpiId service path index identifier
+ * @return connectPoint the network identifier
+ */
+ ConnectPoint installLoadBalancedFlowRules(PortChain portChain, FiveTuple fiveTuple,
+ NshServicePathId nshSpiId);
+
+ /**
+ * Uninstall load balanced flow rules.
+ *
+ * @param portChain port-chain
+ * @param fiveTuple five tuple packet information
+ * @param nshSpiId service path index identifier
+ * @return connectPoint the network identifier
+ */
+ ConnectPoint unInstallLoadBalancedFlowRules(PortChain portChain, FiveTuple fiveTuple,
+ NshServicePathId nshSpiId);
+}