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.OfContext;
29 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.PolicyManager.FlowMap;
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.subject.feature.definition.Parameter.IsRequired;
54 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definition.Parameter.Type;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definition.ParameterBuilder;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinition;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinitionBuilder;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.instance.ParameterValue;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.subject.feature.instances.ActionInstance;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlanGpe;
62 import org.slf4j.Logger;
63 import org.slf4j.LoggerFactory;
65 import com.google.common.base.Optional;
66 import com.google.common.collect.ImmutableList;
67 import com.google.common.collect.Iterables;
70 * Chain action for the OpenFlow Overlay renderer
71 * TODO: separate the generic definition from the concrete
72 * implementation for the OpenFlow Ovelray renderer
74 public class ChainAction extends Action {
76 private static final Logger LOG = LoggerFactory.getLogger(ChainAction.class);
78 public static final ActionDefinitionId ID = new ActionDefinitionId("3d886be7-059f-4c4f-bbef-0356bea40933");
80 public static final Integer CHAIN_CONDITION_GROUP = 0xfffffe;
82 protected static final String TYPE = "type";
85 public static final String SFC_CHAIN_ACTION = "chain";
86 // the parameter used for storing the chain name
87 public static final String SFC_CHAIN_NAME = "sfc-chain-name";
89 protected static final ActionDefinition DEF = new ActionDefinitionBuilder().setId(ID)
90 .setName(new ActionName(SFC_CHAIN_ACTION))
91 .setDescription(new Description("Send the traffic through a Service Function Chain"))
93 (ImmutableList.of(new ParameterBuilder().setName(new ParameterName(SFC_CHAIN_NAME))
94 .setDescription(new Description("The named chain to match against"))
95 .setIsRequired(IsRequired.Required)
101 public ActionDefinitionId getId() {
106 public ActionDefinition getActionDef() {
111 public List<ActionBuilder> updateAction(List<ActionBuilder> actions, Map<String, Object> params, Integer order,
112 NetworkElements netElements, PolicyPair policyPair, FlowMap flowMap, OfContext ctx) {
114 * Get the named chain
116 ServiceFunctionPath sfcPath = null;
117 String chainName = null;
118 if (params != null) {
119 LOG.debug("ChainAction: 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("ChainAction: Chain name was null");
128 sfcPath = getSfcPath(chainName);
133 LOG.error("ChainAction: Parameters null for chain action");
138 * If path is symmetrical
139 * if src == consumer, chainName
140 * else src == provider, chainName-Reverse.
142 if (sfcPath == null) {
143 LOG.error("ChainAction: SFC Path null for chain {}", chainName);
147 // Find existing RSP based on following naming convention, else create it.
148 String rspName = sfcPath.getName() + "-gbp-rsp";
149 ReadOnlyTransaction rTx = ctx.getDataBroker().newReadOnlyTransaction();
150 RenderedServicePath renderedServicePath = getRspByName(rspName, rTx);
151 if (renderedServicePath == null) {
152 LOG.info("ChainAction: Could not find RSP {} for Chain {}", rspName, chainName);
154 CreateRenderedPathInput rspInput = new CreateRenderedPathInputBuilder().setParentServiceFunctionPath(
157 .setSymmetric(Boolean.FALSE)
159 renderedServicePath = SfcProviderRenderedPathAPI.createRenderedServicePathAndState(sfcPath, rspInput);
160 if (renderedServicePath == null) {
161 LOG.error("ChainAction: Could not find or create RSP for chain {}", chainName);
166 RenderedServicePathFirstHop rspFirstHop = SfcProviderRenderedPathAPI.readRenderedServicePathFirstHop(rspName);
168 if (!isValidRspFirstHop(rspFirstHop)) {
169 // Errors logged in method.
173 NodeId tunnelDestNodeId;
174 if (netElements.getDstNodeId().equals(netElements.getLocalNodeId())) {
175 // Return destination is here
176 tunnelDestNodeId = netElements.getLocalNodeId();
178 tunnelDestNodeId = netElements.getDstNodeId();
181 IpAddress tunnelDest = ctx.getSwitchManager().getTunnelIP(tunnelDestNodeId, TunnelTypeVxlanGpe.class);
183 if (tunnelDest == null || tunnelDest.getIpv4Address() == null) {
184 LOG.error("ChainAction: Invalid tunnelDest for NodeId: {}", tunnelDestNodeId);
189 RenderedServicePathHop firstRspHop = renderedServicePath.getRenderedServicePathHop().get(0);
190 RenderedServicePathHop lastRspHop = Iterables.getLast(renderedServicePath.getRenderedServicePathHop());
192 SfcNshHeader sfcNshHeader = new SfcNshHeaderBuilder().setNshTunIpDst(rspFirstHop.getIp().getIpv4Address())
193 .setNshTunUdpPort(rspFirstHop.getPort())
194 .setNshNsiToChain(firstRspHop.getServiceIndex())
195 .setNshNspToChain(renderedServicePath.getPathId())
196 .setNshNsiFromChain((short) (lastRspHop.getServiceIndex().intValue() - 1))
197 .setNshNspFromChain(renderedServicePath.getPathId())
198 .setNshMetaC1(SfcNshHeader.convertIpAddressToLong(tunnelDest.getIpv4Address()))
199 .setNshMetaC2((long) netElements.getSrcEpOrds().getTunnelId())
202 // Cannot set all actions here. Some actions are destination specific, and we don't know a destination is to be
203 // chained until we reach this point. Need to write match/action in External Table for chained packets.
204 actions = addActionBuilder(actions, nxSetNsiAction(sfcNshHeader.getNshNsiToChain()), order);
205 actions = addActionBuilder(actions, nxSetNspAction(sfcNshHeader.getNshNspToChain()), order);
207 createChainTunnelFlows(sfcNshHeader, netElements, flowMap, ctx);
212 private boolean isValidRspFirstHop(RenderedServicePathFirstHop rspFirstHop) {
213 boolean valid = true;
214 if (rspFirstHop == null) {
215 LOG.error("isValidRspFirstHop: rspFirstHop is null.");
218 if (rspFirstHop.getIp() == null || rspFirstHop.getIp().getIpv4Address() == null
219 || rspFirstHop.getIp().getIpv6Address() != null) {
220 LOG.error("isValidRspFirstHop: rspFirstHop has invalid IP address.");
223 if (rspFirstHop.getPort() == null) {
224 LOG.error("isValidRspFirstHop: rspFirstHop has no IP port .");
227 if (rspFirstHop.getPathId() == null) {
228 LOG.error("isValidRspFirstHop: rspFirstHop has no Path Id (NSP).");
231 if (rspFirstHop.getStartingIndex() == null) {
232 LOG.error("isValidRspFirstHop: rspFirstHop has no Starting Index (NSI)");
238 private RenderedServicePath getRspByName(String rspName, ReadOnlyTransaction rTx) {
239 Optional<RenderedServicePath> optRsp = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,
240 SfcIidFactory.rspIid(rspName), rTx);
241 if (optRsp.isPresent()) {
248 public boolean isValid(ActionInstance actionInstance) {
249 return isValidGbpChain(actionInstance.getParameterValue());
252 private boolean isValidGbpChain(List<ParameterValue> paramValue) {
253 ParameterValue pv = getChainNameParameter(paramValue);
257 LOG.trace("Invoking RPC for chain {}", pv.getStringValue());
258 ServiceFunctionChain chain = SfcProviderServiceChainAPI.readServiceFunctionChain(pv.getStringValue());
259 return (chain != null);
262 public ServiceFunctionPath getSfcPath(String chainName) {
264 ServiceFunctionPaths paths = SfcProviderServicePathAPI.readAllServiceFunctionPaths();
265 for (ServiceFunctionPath path : paths.getServiceFunctionPath()) {
266 if (path.getServiceChainName().equals(chainName)) {
273 private ParameterValue getChainNameParameter(List<ParameterValue> paramValueList) {
274 if (paramValueList == null)
276 for (ParameterValue pv : paramValueList) {
277 if (pv.getName().getValue().equals(SFC_CHAIN_NAME)) {
284 private List<ActionBuilder> addActionBuilder(List<ActionBuilder> actions,
285 org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action action, Integer order) {
286 ActionBuilder ab = new ActionBuilder();
287 ab.setAction(action);