2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sf;
11 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.ChainActionFlows.createChainTunnelFlows;
12 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxSetNsiAction;
13 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxSetNspAction;
15 import java.util.List;
18 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
20 import org.opendaylight.groupbasedpolicy.sf.actions.ChainActionDefinition;
21 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfWriter;
22 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfContext;
23 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.NetworkElements;
24 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.PolicyPair;
25 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcIidFactory;
26 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader;
27 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader.SfcNshHeaderBuilder;
28 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
29 import org.opendaylight.sfc.provider.api.SfcProviderRenderedPathAPI;
30 import org.opendaylight.sfc.provider.api.SfcProviderServiceChainAPI;
31 import org.opendaylight.sfc.provider.api.SfcProviderServicePathAPI;
32 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.common.rev151017.RspName;
33 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.common.rev151017.SfcName;
34 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInput;
35 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInputBuilder;
36 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.path.first.hop.info.RenderedServicePathFirstHop;
37 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.RenderedServicePath;
38 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.rendered.service.path.RenderedServicePathHop;
39 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfc.rev140701.service.function.chain.grouping.ServiceFunctionChain;
40 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.ServiceFunctionPaths;
41 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.service.function.paths.ServiceFunctionPath;
42 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
43 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
44 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ActionDefinitionId;
45 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.HasDirection.Direction;
46 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinition;
47 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.instance.ParameterValue;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.subject.feature.instances.ActionInstance;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlanGpe;
51 import org.slf4j.Logger;
52 import org.slf4j.LoggerFactory;
54 import com.google.common.base.Optional;
55 import com.google.common.collect.Iterables;
58 * Chain action for the OpenFlow Overlay renderer
59 * TODO: separate the generic definition from the concrete
60 * implementation for the OpenFlow Overlay renderer
62 public class ChainAction extends Action {
64 private static final Logger LOG = LoggerFactory.getLogger(ChainAction.class);
67 public ActionDefinitionId getId() {
68 return ChainActionDefinition.ID;
72 public ActionDefinition getActionDef() {
73 return ChainActionDefinition.DEFINITION;
77 public List<ActionBuilder> updateAction(List<ActionBuilder> actions, Map<String, Object> params, Integer order,
78 NetworkElements netElements, PolicyPair policyPair, OfWriter ofWriter, OfContext ctx, Direction direction) {
82 String chainName = null;
84 LOG.debug("updateAction: Searching for named chain");
85 for (String name : params.keySet()) {
86 if (name instanceof String) {
87 if (name.equals(ChainActionDefinition.SFC_CHAIN_NAME)) {
88 chainName = (String) params.get(name);
89 if (chainName == null) {
90 LOG.error("updateAction: Chain name was null");
97 LOG.error("updateAction: Parameters null for chain action");
101 if (chainName == null) {
102 LOG.error("updateAction: Chain name was null");
107 * If path is symmetrical then there are two RSPs.
108 * if srcEp is in consumer EPG use "rspName"
109 * else srcEp is in provider EPG, "rspName-Reverse".
111 ServiceFunctionPath sfcPath = getSfcPath(new SfcName(chainName));
112 if (sfcPath == null || sfcPath.getName() == null) {
113 LOG.error("updateAction: SFC Path was invalid. Either null or name was null.", sfcPath);
116 // Find existing RSP based on following naming convention, else create it.
117 RspName rspName = new RspName(sfcPath.getName() + "-gbp-rsp");
118 ReadOnlyTransaction rTx = ctx.getDataBroker().newReadOnlyTransaction();
119 RenderedServicePath renderedServicePath;
120 RenderedServicePath rsp = getRspByName(rspName, rTx);
122 renderedServicePath = createRsp(sfcPath, rspName);
123 if (renderedServicePath != null) {
124 LOG.info("updateAction: Could not find RSP {} for Chain {}, created.", rspName, chainName);
126 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
130 renderedServicePath = rsp;
134 if (sfcPath.isSymmetric() && direction.equals(Direction.Out)){
135 rspName = new RspName(rspName.getValue() + "-Reverse");
136 rsp = getRspByName(rspName, rTx);
138 LOG.info("updateAction: Could not find Reverse RSP {} for Chain {}", rspName, chainName);
139 renderedServicePath = createSymmetricRsp(renderedServicePath);
140 if (renderedServicePath == null) {
141 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
145 renderedServicePath = rsp;
148 } catch (Exception e) {
149 LOG.error("updateAction: Attemping to determine if srcEp {} was consumer.", netElements.getSrcEp().getKey(), e);
153 RenderedServicePathFirstHop rspFirstHop = SfcProviderRenderedPathAPI.readRenderedServicePathFirstHop(rspName);
154 if (!isValidRspFirstHop(rspFirstHop)) {
155 // Errors logged in method.
159 NodeId tunnelDestNodeId=netElements.getDstNodeId();
161 Long returnVnid = (long) netElements.getSrcEpOrds().getTunnelId();
163 IpAddress tunnelDest = ctx.getSwitchManager().getTunnelIP(tunnelDestNodeId, TunnelTypeVxlanGpe.class);
164 if (tunnelDest == null || tunnelDest.getIpv4Address() == null) {
165 LOG.error("updateAction: Invalid tunnelDest for NodeId: {}", tunnelDestNodeId);
169 RenderedServicePathHop firstRspHop = renderedServicePath.getRenderedServicePathHop().get(0);
170 RenderedServicePathHop lastRspHop = Iterables.getLast(renderedServicePath.getRenderedServicePathHop());
171 SfcNshHeader sfcNshHeader = new SfcNshHeaderBuilder().setNshTunIpDst(rspFirstHop.getIp().getIpv4Address())
172 .setNshTunUdpPort(rspFirstHop.getPort())
173 .setNshNsiToChain(firstRspHop.getServiceIndex())
174 .setNshNspToChain(renderedServicePath.getPathId())
175 .setNshNsiFromChain((short) (lastRspHop.getServiceIndex().intValue() - 1))
176 .setNshNspFromChain(renderedServicePath.getPathId())
177 .setNshMetaC1(SfcNshHeader.convertIpAddressToLong(tunnelDest.getIpv4Address()))
178 .setNshMetaC2(returnVnid)
181 // Cannot set all actions here. Some actions are destination specific, and we don't know
182 // a destination is to be
183 // chained until we reach this point. Need to write match/action in External Table for
185 actions = addActionBuilder(actions, nxSetNsiAction(sfcNshHeader.getNshNsiToChain()), order);
186 actions = addActionBuilder(actions, nxSetNspAction(sfcNshHeader.getNshNspToChain()), order);
187 createChainTunnelFlows(sfcNshHeader, netElements, ofWriter, ctx);
191 private RenderedServicePath createRsp(ServiceFunctionPath sfcPath, RspName rspName) {
192 CreateRenderedPathInput rspInput = new CreateRenderedPathInputBuilder().setParentServiceFunctionPath(
193 sfcPath.getName().getValue())
194 .setName(rspName.getValue())
195 .setSymmetric(sfcPath.isSymmetric())
197 return SfcProviderRenderedPathAPI.createRenderedServicePathAndState(sfcPath, rspInput);
200 private RenderedServicePath createSymmetricRsp(RenderedServicePath rsp) {
204 return SfcProviderRenderedPathAPI.createSymmetricRenderedServicePathAndState(rsp);
207 private boolean isValidRspFirstHop(RenderedServicePathFirstHop rspFirstHop) {
208 boolean valid = true;
209 if (rspFirstHop == null) {
210 LOG.error("isValidRspFirstHop: rspFirstHop is null.");
213 if (rspFirstHop.getIp() == null || rspFirstHop.getIp().getIpv4Address() == null
214 || rspFirstHop.getIp().getIpv6Address() != null) {
215 LOG.error("isValidRspFirstHop: rspFirstHop has invalid IP address.");
218 if (rspFirstHop.getPort() == null) {
219 LOG.error("isValidRspFirstHop: rspFirstHop has no IP port .");
222 if (rspFirstHop.getPathId() == null) {
223 LOG.error("isValidRspFirstHop: rspFirstHop has no Path Id (NSP).");
226 if (rspFirstHop.getStartingIndex() == null) {
227 LOG.error("isValidRspFirstHop: rspFirstHop has no Starting Index (NSI)");
233 private RenderedServicePath getRspByName(RspName rspName, ReadOnlyTransaction rTx) {
234 Optional<RenderedServicePath> optRsp = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,
235 SfcIidFactory.rspIid(rspName), rTx);
236 if (optRsp.isPresent()) {
243 public boolean isValid(ActionInstance actionInstance) {
244 return isValidGbpChain(actionInstance.getParameterValue());
247 private boolean isValidGbpChain(List<ParameterValue> paramValue) {
248 ParameterValue pv = getChainNameParameter(paramValue);
252 SfcName sfcName = new SfcName(pv.getStringValue());
253 LOG.trace("isValidGbpChain: Invoking RPC for chain {}", pv.getStringValue());
254 ServiceFunctionChain chain = SfcProviderServiceChainAPI.readServiceFunctionChain(sfcName);
255 return (chain != null);
258 public ServiceFunctionPath getSfcPath(SfcName chainName) {
259 ServiceFunctionPaths paths = SfcProviderServicePathAPI.readAllServiceFunctionPaths();
260 for (ServiceFunctionPath path : paths.getServiceFunctionPath()) {
261 if (path.getServiceChainName().equals(chainName)) {
268 private ParameterValue getChainNameParameter(List<ParameterValue> paramValueList) {
269 if (paramValueList == null)
271 for (ParameterValue pv : paramValueList) {
272 if (pv.getName().getValue().equals(ChainActionDefinition.SFC_CHAIN_NAME)) {
279 private List<ActionBuilder> addActionBuilder(List<ActionBuilder> actions,
280 org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action action, Integer order) {
281 ActionBuilder ab = new ActionBuilder();
282 ab.setAction(action);