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;
12 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
14 * This program and the accompanying materials are made available under the
15 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
16 * and is available at http://www.eclipse.org/legal/epl-v10.html
19 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.ChainActionFlows.createChainTunnelFlows;
20 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxSetNsiAction;
21 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.nxSetNspAction;
23 import java.util.List;
26 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
27 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
28 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfWriter;
29 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfContext;
30 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.NetworkElements;
31 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.PolicyPair;
32 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcIidFactory;
33 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader;
34 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader.SfcNshHeaderBuilder;
35 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
36 import org.opendaylight.sfc.provider.api.SfcProviderRenderedPathAPI;
37 import org.opendaylight.sfc.provider.api.SfcProviderServiceChainAPI;
38 import org.opendaylight.sfc.provider.api.SfcProviderServicePathAPI;
39 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInput;
40 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInputBuilder;
41 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.path.first.hop.info.RenderedServicePathFirstHop;
42 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.RenderedServicePath;
43 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.rendered.service.path.RenderedServicePathHop;
44 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfc.rev140701.service.function.chain.grouping.ServiceFunctionChain;
45 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.ServiceFunctionPaths;
46 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.service.function.paths.ServiceFunctionPath;
47 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ActionDefinitionId;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ActionName;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.Description;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ParameterName;
53 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.HasDirection.Direction;
54 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definition.Parameter.IsRequired;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definition.Parameter.Type;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definition.ParameterBuilder;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinition;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinitionBuilder;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.instance.ParameterValue;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.subject.feature.instances.ActionInstance;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlanGpe;
63 import org.slf4j.Logger;
64 import org.slf4j.LoggerFactory;
66 import com.google.common.base.Optional;
67 import com.google.common.collect.ImmutableList;
68 import com.google.common.collect.Iterables;
71 * Chain action for the OpenFlow Overlay renderer
72 * TODO: separate the generic definition from the concrete
73 * implementation for the OpenFlow Overlay renderer
75 public class ChainAction extends Action {
77 private static final Logger LOG = LoggerFactory.getLogger(ChainAction.class);
79 public static final ActionDefinitionId ID = new ActionDefinitionId("3d886be7-059f-4c4f-bbef-0356bea40933");
81 public static final Integer CHAIN_CONDITION_GROUP = 0xfffffe;
83 protected static final String TYPE = "type";
86 public static final String SFC_CHAIN_ACTION = "chain";
87 // the parameter used for storing the chain name
88 public static final String SFC_CHAIN_NAME = "sfc-chain-name";
90 protected static final ActionDefinition DEF = new ActionDefinitionBuilder().setId(ID)
91 .setName(new ActionName(SFC_CHAIN_ACTION))
92 .setDescription(new Description("Send the traffic through a Service Function Chain"))
94 (ImmutableList.of(new ParameterBuilder().setName(new ParameterName(SFC_CHAIN_NAME))
95 .setDescription(new Description("The named chain to match against"))
96 .setIsRequired(IsRequired.Required)
102 public ActionDefinitionId getId() {
107 public ActionDefinition getActionDef() {
112 public List<ActionBuilder> updateAction(List<ActionBuilder> actions, Map<String, Object> params, Integer order,
113 NetworkElements netElements, PolicyPair policyPair, OfWriter ofWriter, OfContext ctx, Direction direction) {
115 * Get the named chain
117 String chainName = null;
118 if (params != null) {
119 LOG.debug("updateAction: Searching for named chain");
120 for (String name : params.keySet()) {
121 if (name instanceof String) {
122 if (name.equals(SFC_CHAIN_NAME)) {
123 chainName = (String) params.get(name);
124 if (chainName == null) {
125 LOG.error("updateAction: Chain name was null");
132 LOG.error("updateAction: Parameters null for chain action");
136 if (chainName == null) {
137 LOG.error("updateAction: Chain name was null");
142 * If path is symmetrical then there are two RSPs.
143 * if srcEp is in consumer EPG use "rspName"
144 * else srcEp is in provider EPG, "rspName-Reverse".
146 ServiceFunctionPath sfcPath = getSfcPath(chainName);
147 if (sfcPath == null || sfcPath.getName() == null) {
148 LOG.error("updateAction: SFC Path was invalid. Either null or name was null.", sfcPath);
151 // Find existing RSP based on following naming convention, else create it.
152 String rspName = sfcPath.getName() + "-gbp-rsp";
153 ReadOnlyTransaction rTx = ctx.getDataBroker().newReadOnlyTransaction();
154 RenderedServicePath renderedServicePath;
155 RenderedServicePath rsp = getRspByName(rspName, rTx);
157 renderedServicePath = createRsp(sfcPath, rspName);
158 if (renderedServicePath != null) {
159 LOG.info("updateAction: Could not find RSP {} for Chain {}, created.", rspName, chainName);
161 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
165 renderedServicePath = rsp;
169 if (sfcPath.isSymmetric() && direction.equals(Direction.Out)){
170 rspName = rspName + "-Reverse";
171 rsp = getRspByName(rspName, rTx);
173 LOG.info("updateAction: Could not find Reverse RSP {} for Chain {}", rspName, chainName);
174 renderedServicePath = createSymmetricRsp(renderedServicePath);
175 if (renderedServicePath == null) {
176 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
180 renderedServicePath = rsp;
183 } catch (Exception e) {
184 LOG.error("updateAction: Attemping to determine if srcEp {} was consumer.", netElements.getSrcEp().getKey(), e);
188 RenderedServicePathFirstHop rspFirstHop = SfcProviderRenderedPathAPI.readRenderedServicePathFirstHop(rspName);
189 if (!isValidRspFirstHop(rspFirstHop)) {
190 // Errors logged in method.
194 NodeId tunnelDestNodeId=netElements.getDstNodeId();
196 Long returnVnid = (long) netElements.getSrcEpOrds().getTunnelId();
198 IpAddress tunnelDest = ctx.getSwitchManager().getTunnelIP(tunnelDestNodeId, TunnelTypeVxlanGpe.class);
199 if (tunnelDest == null || tunnelDest.getIpv4Address() == null) {
200 LOG.error("updateAction: Invalid tunnelDest for NodeId: {}", tunnelDestNodeId);
204 RenderedServicePathHop firstRspHop = renderedServicePath.getRenderedServicePathHop().get(0);
205 RenderedServicePathHop lastRspHop = Iterables.getLast(renderedServicePath.getRenderedServicePathHop());
206 SfcNshHeader sfcNshHeader = new SfcNshHeaderBuilder().setNshTunIpDst(rspFirstHop.getIp().getIpv4Address())
207 .setNshTunUdpPort(rspFirstHop.getPort())
208 .setNshNsiToChain(firstRspHop.getServiceIndex())
209 .setNshNspToChain(renderedServicePath.getPathId())
210 .setNshNsiFromChain((short) (lastRspHop.getServiceIndex().intValue() - 1))
211 .setNshNspFromChain(renderedServicePath.getPathId())
212 .setNshMetaC1(SfcNshHeader.convertIpAddressToLong(tunnelDest.getIpv4Address()))
213 .setNshMetaC2(returnVnid)
216 // Cannot set all actions here. Some actions are destination specific, and we don't know
217 // a destination is to be
218 // chained until we reach this point. Need to write match/action in External Table for
220 actions = addActionBuilder(actions, nxSetNsiAction(sfcNshHeader.getNshNsiToChain()), order);
221 actions = addActionBuilder(actions, nxSetNspAction(sfcNshHeader.getNshNspToChain()), order);
222 createChainTunnelFlows(sfcNshHeader, netElements, ofWriter, ctx);
226 private RenderedServicePath createRsp(ServiceFunctionPath sfcPath, String rspName) {
227 CreateRenderedPathInput rspInput = new CreateRenderedPathInputBuilder().setParentServiceFunctionPath(
230 .setSymmetric(sfcPath.isSymmetric())
232 return SfcProviderRenderedPathAPI.createRenderedServicePathAndState(sfcPath, rspInput);
235 private RenderedServicePath createSymmetricRsp(RenderedServicePath rsp) {
239 return SfcProviderRenderedPathAPI.createSymmetricRenderedServicePathAndState(rsp);
242 private boolean isValidRspFirstHop(RenderedServicePathFirstHop rspFirstHop) {
243 boolean valid = true;
244 if (rspFirstHop == null) {
245 LOG.error("isValidRspFirstHop: rspFirstHop is null.");
248 if (rspFirstHop.getIp() == null || rspFirstHop.getIp().getIpv4Address() == null
249 || rspFirstHop.getIp().getIpv6Address() != null) {
250 LOG.error("isValidRspFirstHop: rspFirstHop has invalid IP address.");
253 if (rspFirstHop.getPort() == null) {
254 LOG.error("isValidRspFirstHop: rspFirstHop has no IP port .");
257 if (rspFirstHop.getPathId() == null) {
258 LOG.error("isValidRspFirstHop: rspFirstHop has no Path Id (NSP).");
261 if (rspFirstHop.getStartingIndex() == null) {
262 LOG.error("isValidRspFirstHop: rspFirstHop has no Starting Index (NSI)");
268 private RenderedServicePath getRspByName(String rspName, ReadOnlyTransaction rTx) {
269 Optional<RenderedServicePath> optRsp = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,
270 SfcIidFactory.rspIid(rspName), rTx);
271 if (optRsp.isPresent()) {
278 public boolean isValid(ActionInstance actionInstance) {
279 return isValidGbpChain(actionInstance.getParameterValue());
282 private boolean isValidGbpChain(List<ParameterValue> paramValue) {
283 ParameterValue pv = getChainNameParameter(paramValue);
287 LOG.trace("isValidGbpChain: Invoking RPC for chain {}", pv.getStringValue());
288 ServiceFunctionChain chain = SfcProviderServiceChainAPI.readServiceFunctionChain(pv.getStringValue());
289 return (chain != null);
292 public ServiceFunctionPath getSfcPath(String chainName) {
293 ServiceFunctionPaths paths = SfcProviderServicePathAPI.readAllServiceFunctionPaths();
294 for (ServiceFunctionPath path : paths.getServiceFunctionPath()) {
295 if (path.getServiceChainName().equals(chainName)) {
302 private ParameterValue getChainNameParameter(List<ParameterValue> paramValueList) {
303 if (paramValueList == null)
305 for (ParameterValue pv : paramValueList) {
306 if (pv.getName().getValue().equals(SFC_CHAIN_NAME)) {
313 private List<ActionBuilder> addActionBuilder(List<ActionBuilder> actions,
314 org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action action, Integer order) {
315 ActionBuilder ab = new ActionBuilder();
316 ab.setAction(action);