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.common.rev140421.ParameterName;
46 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.HasDirection.Direction;
47 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.definitions.ActionDefinition;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.instance.ParameterValue;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.subject.feature.instances.ActionInstance;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.supported.action.definition.SupportedParameterValues;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.supported.action.definition.SupportedParameterValuesBuilder;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlanGpe;
54 import org.slf4j.Logger;
55 import org.slf4j.LoggerFactory;
57 import com.google.common.base.Optional;
58 import com.google.common.collect.ImmutableList;
59 import com.google.common.collect.Iterables;
62 * Chain action for the OpenFlow Overlay renderer
63 * TODO: separate the generic definition from the concrete
64 * implementation for the OpenFlow Overlay renderer
66 public class ChainAction extends Action {
68 private static final Logger LOG = LoggerFactory.getLogger(ChainAction.class);
71 public ActionDefinitionId getId() {
72 return ChainActionDefinition.ID;
76 public ActionDefinition getActionDef() {
77 return ChainActionDefinition.DEFINITION;
81 public List<ActionBuilder> updateAction(List<ActionBuilder> actions, Map<String, Object> params, Integer order,
82 NetworkElements netElements, PolicyPair policyPair, OfWriter ofWriter, OfContext ctx, Direction direction) {
86 String chainName = null;
88 LOG.debug("updateAction: Searching for named chain");
89 for (String name : params.keySet()) {
90 if (name instanceof String) {
91 if (name.equals(ChainActionDefinition.SFC_CHAIN_NAME)) {
92 chainName = (String) params.get(name);
93 if (chainName == null) {
94 LOG.error("updateAction: Chain name was null");
101 LOG.error("updateAction: Parameters null for chain action");
105 if (chainName == null) {
106 LOG.error("updateAction: Chain name was null");
111 * If path is symmetrical then there are two RSPs.
112 * if srcEp is in consumer EPG use "rspName"
113 * else srcEp is in provider EPG, "rspName-Reverse".
115 ServiceFunctionPath sfcPath = getSfcPath(new SfcName(chainName));
116 if (sfcPath == null || sfcPath.getName() == null) {
117 LOG.error("updateAction: SFC Path was invalid. Either null or name was null.", sfcPath);
120 // Find existing RSP based on following naming convention, else create it.
121 RspName rspName = new RspName(sfcPath.getName() + "-gbp-rsp");
122 ReadOnlyTransaction rTx = ctx.getDataBroker().newReadOnlyTransaction();
123 RenderedServicePath renderedServicePath;
124 RenderedServicePath rsp = getRspByName(rspName, rTx);
126 renderedServicePath = createRsp(sfcPath, rspName);
127 if (renderedServicePath != null) {
128 LOG.info("updateAction: Could not find RSP {} for Chain {}, created.", rspName, chainName);
130 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
134 renderedServicePath = rsp;
138 if (sfcPath.isSymmetric() && direction.equals(Direction.Out)){
139 rspName = new RspName(rspName.getValue() + "-Reverse");
140 rsp = getRspByName(rspName, rTx);
142 LOG.info("updateAction: Could not find Reverse RSP {} for Chain {}", rspName, chainName);
143 renderedServicePath = createSymmetricRsp(renderedServicePath);
144 if (renderedServicePath == null) {
145 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
149 renderedServicePath = rsp;
152 } catch (Exception e) {
153 LOG.error("updateAction: Attemping to determine if srcEp {} was consumer.", netElements.getSrcEp().getKey(), e);
157 RenderedServicePathFirstHop rspFirstHop = SfcProviderRenderedPathAPI.readRenderedServicePathFirstHop(rspName);
158 if (!isValidRspFirstHop(rspFirstHop)) {
159 // Errors logged in method.
163 NodeId tunnelDestNodeId=netElements.getDstNodeId();
165 Long returnVnid = (long) netElements.getSrcEpOrds().getTunnelId();
167 IpAddress tunnelDest = ctx.getSwitchManager().getTunnelIP(tunnelDestNodeId, TunnelTypeVxlanGpe.class);
168 if (tunnelDest == null || tunnelDest.getIpv4Address() == null) {
169 LOG.error("updateAction: Invalid tunnelDest for NodeId: {}", tunnelDestNodeId);
173 RenderedServicePathHop firstRspHop = renderedServicePath.getRenderedServicePathHop().get(0);
174 RenderedServicePathHop lastRspHop = Iterables.getLast(renderedServicePath.getRenderedServicePathHop());
175 SfcNshHeader sfcNshHeader = new SfcNshHeaderBuilder().setNshTunIpDst(rspFirstHop.getIp().getIpv4Address())
176 .setNshTunUdpPort(rspFirstHop.getPort())
177 .setNshNsiToChain(firstRspHop.getServiceIndex())
178 .setNshNspToChain(renderedServicePath.getPathId())
179 .setNshNsiFromChain((short) (lastRspHop.getServiceIndex().intValue() - 1))
180 .setNshNspFromChain(renderedServicePath.getPathId())
181 .setNshMetaC1(SfcNshHeader.convertIpAddressToLong(tunnelDest.getIpv4Address()))
182 .setNshMetaC2(returnVnid)
185 // Cannot set all actions here. Some actions are destination specific, and we don't know
186 // a destination is to be
187 // chained until we reach this point. Need to write match/action in External Table for
189 actions = addActionBuilder(actions, nxSetNsiAction(sfcNshHeader.getNshNsiToChain()), order);
190 actions = addActionBuilder(actions, nxSetNspAction(sfcNshHeader.getNshNspToChain()), order);
191 createChainTunnelFlows(sfcNshHeader, netElements, ofWriter, ctx);
195 private RenderedServicePath createRsp(ServiceFunctionPath sfcPath, RspName rspName) {
196 CreateRenderedPathInput rspInput = new CreateRenderedPathInputBuilder().setParentServiceFunctionPath(
197 sfcPath.getName().getValue())
198 .setName(rspName.getValue())
199 .setSymmetric(sfcPath.isSymmetric())
201 return SfcProviderRenderedPathAPI.createRenderedServicePathAndState(sfcPath, rspInput);
204 private RenderedServicePath createSymmetricRsp(RenderedServicePath rsp) {
208 return SfcProviderRenderedPathAPI.createSymmetricRenderedServicePathAndState(rsp);
211 private boolean isValidRspFirstHop(RenderedServicePathFirstHop rspFirstHop) {
212 boolean valid = true;
213 if (rspFirstHop == null) {
214 LOG.error("isValidRspFirstHop: rspFirstHop is null.");
217 if (rspFirstHop.getIp() == null || rspFirstHop.getIp().getIpv4Address() == null
218 || rspFirstHop.getIp().getIpv6Address() != null) {
219 LOG.error("isValidRspFirstHop: rspFirstHop has invalid IP address.");
222 if (rspFirstHop.getPort() == null) {
223 LOG.error("isValidRspFirstHop: rspFirstHop has no IP port .");
226 if (rspFirstHop.getPathId() == null) {
227 LOG.error("isValidRspFirstHop: rspFirstHop has no Path Id (NSP).");
230 if (rspFirstHop.getStartingIndex() == null) {
231 LOG.error("isValidRspFirstHop: rspFirstHop has no Starting Index (NSI)");
237 private RenderedServicePath getRspByName(RspName rspName, ReadOnlyTransaction rTx) {
238 Optional<RenderedServicePath> optRsp = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,
239 SfcIidFactory.rspIid(rspName), rTx);
240 if (optRsp.isPresent()) {
247 public boolean isValid(ActionInstance actionInstance) {
248 return isValidGbpChain(actionInstance.getParameterValue());
251 private boolean isValidGbpChain(List<ParameterValue> paramValue) {
252 ParameterValue pv = getChainNameParameter(paramValue);
256 SfcName sfcName = new SfcName(pv.getStringValue());
257 LOG.trace("isValidGbpChain: Invoking RPC for chain {}", pv.getStringValue());
258 ServiceFunctionChain chain = SfcProviderServiceChainAPI.readServiceFunctionChain(sfcName);
259 return (chain != null);
262 public ServiceFunctionPath getSfcPath(SfcName chainName) {
263 ServiceFunctionPaths paths = SfcProviderServicePathAPI.readAllServiceFunctionPaths();
264 for (ServiceFunctionPath path : paths.getServiceFunctionPath()) {
265 if (path.getServiceChainName().equals(chainName)) {
272 private ParameterValue getChainNameParameter(List<ParameterValue> paramValueList) {
273 if (paramValueList == null)
275 for (ParameterValue pv : paramValueList) {
276 if (pv.getName().getValue().equals(ChainActionDefinition.SFC_CHAIN_NAME)) {
283 private List<ActionBuilder> addActionBuilder(List<ActionBuilder> actions,
284 org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action action, Integer order) {
285 ActionBuilder ab = new ActionBuilder();
286 ab.setAction(action);
293 public List<SupportedParameterValues> getSupportedParameterValues() {
294 // supported parameter does not contain parameter type - it means all strings are supported
295 return ImmutableList.<SupportedParameterValues>of(new SupportedParameterValuesBuilder()
296 .setParameterName(new ParameterName(ChainActionDefinition.SFC_CHAIN_NAME)).build());