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.renderer.ofoverlay.OfContext;
21 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfWriter;
22 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.NetworkElements;
23 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.PolicyPair;
24 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcIidFactory;
25 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader;
26 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader.SfcNshHeaderBuilder;
27 import org.opendaylight.groupbasedpolicy.sf.actions.ChainActionDefinition;
28 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
29 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.PolicyEnforcer.PolicyPair;
30 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcIidFactory;
31 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader;
32 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sfcutils.SfcNshHeader.SfcNshHeaderBuilder;
33 import org.opendaylight.groupbasedpolicy.resolver.validator.ValidationResult;
34 import org.opendaylight.groupbasedpolicy.resolver.validator.ValidationResultBuilder;
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.common.rev151017.RspName;
40 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.common.rev151017.SfcName;
41 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInput;
42 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.CreateRenderedPathInputBuilder;
43 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.path.first.hop.info.RenderedServicePathFirstHop;
44 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.RenderedServicePath;
45 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.rsp.rev140701.rendered.service.paths.rendered.service.path.RenderedServicePathHop;
46 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfc.rev140701.service.function.chain.grouping.ServiceFunctionChain;
47 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.ServiceFunctionPaths;
48 import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.sfc.sfp.rev140701.service.function.paths.ServiceFunctionPath;
49 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ActionDefinitionId;
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.definitions.ActionDefinition;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.subject.feature.instance.ParameterValue;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.subject.feature.instances.ActionInstance;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.supported.action.definition.SupportedParameterValues;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.capabilities.supported.action.definition.SupportedParameterValuesBuilder;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.overlay.rev150105.TunnelTypeVxlanGpe;
61 import org.slf4j.Logger;
62 import org.slf4j.LoggerFactory;
64 import com.google.common.base.Optional;
65 import com.google.common.collect.ImmutableList;
66 import com.google.common.collect.Iterables;
69 * Chain action for the OpenFlow Overlay renderer
70 * TODO: separate the generic definition from the concrete
71 * implementation for the OpenFlow Overlay renderer
73 public class ChainAction extends Action {
75 private static final Logger LOG = LoggerFactory.getLogger(ChainAction.class);
78 public ActionDefinitionId getId() {
79 return ChainActionDefinition.ID;
83 public ActionDefinition getActionDef() {
84 return ChainActionDefinition.DEFINITION;
88 public List<ActionBuilder> updateAction(List<ActionBuilder> actions, Map<String, Object> params, Integer order,
89 NetworkElements netElements, PolicyPair policyPair, OfWriter ofWriter, OfContext ctx, Direction direction) {
93 String chainName = null;
95 LOG.debug("updateAction: Searching for named chain");
96 for (String name : params.keySet()) {
97 if (name.equals(ChainActionDefinition.SFC_CHAIN_NAME)) {
98 chainName = (String) params.get(name);
99 if (chainName == null) {
100 LOG.error("updateAction: Chain name was null");
106 LOG.error("updateAction: Parameters null for chain action");
110 if (chainName == null) {
111 LOG.error("updateAction: Chain name was null");
116 * If path is symmetrical then there are two RSPs.
117 * if srcEp is in consumer EPG use "rspName"
118 * else srcEp is in provider EPG, "rspName-Reverse".
120 ServiceFunctionPath sfcPath = getSfcPath(new SfcName(chainName));
121 if (sfcPath == null || sfcPath.getName() == null) {
122 LOG.error("updateAction: SFC Path was invalid. Either null or name was null.", sfcPath);
125 // TODO Need helper function to get getTenantName() that returns Name or UUID if Name is
128 String tenantName = netElements.getSrcEp().getTenant().getValue();
129 // Find existing RSP based on following naming convention, else create it.
130 RspName rspName = new RspName(sfcPath.getName().getValue() + tenantName + "-gbp-rsp");
131 ReadOnlyTransaction rTx = ctx.getDataBroker().newReadOnlyTransaction();
132 RenderedServicePath renderedServicePath;
133 RenderedServicePath rsp = getRspByName(rspName, rTx);
135 renderedServicePath = createRsp(sfcPath, rspName);
136 if (renderedServicePath != null) {
137 LOG.info("updateAction: Could not find RSP {} for Chain {}, created.", rspName, chainName);
139 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
143 renderedServicePath = rsp;
147 if (sfcPath.isSymmetric() && direction.equals(Direction.Out)) {
148 rspName = new RspName(rspName.getValue() + "-Reverse");
149 rsp = getRspByName(rspName, rTx);
151 LOG.info("updateAction: Could not find Reverse RSP {} for Chain {}", rspName, chainName);
152 renderedServicePath = createSymmetricRsp(renderedServicePath);
153 if (renderedServicePath == null) {
154 LOG.error("updateAction: Could not create RSP {} for Chain {}", rspName, chainName);
158 renderedServicePath = rsp;
161 } catch (Exception e) {
162 LOG.error("updateAction: Attemping to determine if srcEp {} was consumer.", netElements.getSrcEp().getKey(),
167 RenderedServicePathFirstHop rspFirstHop = SfcProviderRenderedPathAPI.readRenderedServicePathFirstHop(rspName);
168 if (!isValidRspFirstHop(rspFirstHop)) {
169 // Errors logged in method.
173 NodeId tunnelDestNodeId = netElements.getDstNodeId();
175 Long returnVnid = (long) netElements.getSrcEpOrds().getTunnelId();
177 IpAddress tunnelDest = ctx.getSwitchManager().getTunnelIP(tunnelDestNodeId, TunnelTypeVxlanGpe.class);
178 if (tunnelDest == null || tunnelDest.getIpv4Address() == null) {
179 LOG.error("updateAction: Invalid tunnelDest for NodeId: {}", tunnelDestNodeId);
183 RenderedServicePathHop firstRspHop = renderedServicePath.getRenderedServicePathHop().get(0);
184 RenderedServicePathHop lastRspHop = Iterables.getLast(renderedServicePath.getRenderedServicePathHop());
185 SfcNshHeader sfcNshHeader = new SfcNshHeaderBuilder().setNshTunIpDst(rspFirstHop.getIp().getIpv4Address())
186 .setNshTunUdpPort(rspFirstHop.getPort())
187 .setNshNsiToChain(firstRspHop.getServiceIndex())
188 .setNshNspToChain(renderedServicePath.getPathId())
189 .setNshNsiFromChain((short) (lastRspHop.getServiceIndex().intValue() - 1))
190 .setNshNspFromChain(renderedServicePath.getPathId())
191 .setNshMetaC1(SfcNshHeader.convertIpAddressToLong(tunnelDest.getIpv4Address()))
192 .setNshMetaC2(returnVnid)
195 // Cannot set all actions here. Some actions are destination specific, and we don't know
196 // a destination is to be
197 // chained until we reach this point. Need to write match/action in External Table for
199 actions = addActionBuilder(actions, nxSetNsiAction(sfcNshHeader.getNshNsiToChain()), order);
200 actions = addActionBuilder(actions, nxSetNspAction(sfcNshHeader.getNshNspToChain()), order);
201 createChainTunnelFlows(sfcNshHeader, netElements, ofWriter, ctx);
205 private RenderedServicePath createRsp(ServiceFunctionPath sfcPath, RspName rspName) {
206 CreateRenderedPathInput rspInput =
207 new CreateRenderedPathInputBuilder().setParentServiceFunctionPath(sfcPath.getName().getValue())
208 .setName(rspName.getValue())
209 .setSymmetric(sfcPath.isSymmetric())
211 return SfcProviderRenderedPathAPI.createRenderedServicePathAndState(sfcPath, rspInput);
214 private RenderedServicePath createSymmetricRsp(RenderedServicePath rsp) {
218 return SfcProviderRenderedPathAPI.createSymmetricRenderedServicePathAndState(rsp);
221 private boolean isValidRspFirstHop(RenderedServicePathFirstHop rspFirstHop) {
222 boolean valid = true;
223 if (rspFirstHop == null) {
224 LOG.error("isValidRspFirstHop: rspFirstHop is null.");
227 if (rspFirstHop.getIp() == null || rspFirstHop.getIp().getIpv4Address() == null
228 || rspFirstHop.getIp().getIpv6Address() != null) {
229 LOG.error("isValidRspFirstHop: rspFirstHop has invalid IP address.");
232 if (rspFirstHop.getPort() == null) {
233 LOG.error("isValidRspFirstHop: rspFirstHop has no IP port .");
236 if (rspFirstHop.getPathId() == null) {
237 LOG.error("isValidRspFirstHop: rspFirstHop has no Path Id (NSP).");
240 if (rspFirstHop.getStartingIndex() == null) {
241 LOG.error("isValidRspFirstHop: rspFirstHop has no Starting Index (NSI)");
247 private RenderedServicePath getRspByName(RspName rspName, ReadOnlyTransaction rTx) {
248 Optional<RenderedServicePath> optRsp =
249 DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL, SfcIidFactory.rspIid(rspName), rTx);
250 if (optRsp.isPresent()) {
257 public ValidationResult validate(ActionInstance actionInstance) {
258 return isValidGbpChain(actionInstance.getParameterValue());
261 private ValidationResult isValidGbpChain(List<ParameterValue> paramValue) {
262 ParameterValue pv = getChainNameParameter(paramValue);
264 return new ValidationResultBuilder().failed().setMessage(
265 "Chain parameter {" + paramValue + "} not found!").build();
267 SfcName sfcName = new SfcName(pv.getStringValue());
268 LOG.trace("isValidGbpChain: Invoking RPC for chain {}", pv.getStringValue());
269 ServiceFunctionChain chain = SfcProviderServiceChainAPI.readServiceFunctionChain(sfcName);
271 return new ValidationResultBuilder().success().build();
273 return new ValidationResultBuilder().failed().setMessage(
274 "Chain named {" + pv.getStringValue() + "} not found in config DS.").build();
278 public ServiceFunctionPath getSfcPath(SfcName chainName) {
279 ServiceFunctionPaths paths = SfcProviderServicePathAPI.readAllServiceFunctionPaths();
280 for (ServiceFunctionPath path : paths.getServiceFunctionPath()) {
281 if (path.getServiceChainName().equals(chainName)) {
288 private ParameterValue getChainNameParameter(List<ParameterValue> paramValueList) {
289 if (paramValueList == null)
291 for (ParameterValue pv : paramValueList) {
292 if (pv.getName().getValue().equals(ChainActionDefinition.SFC_CHAIN_NAME)) {
299 private List<ActionBuilder> addActionBuilder(List<ActionBuilder> actions,
300 org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action action, Integer order) {
301 ActionBuilder ab = new ActionBuilder();
302 ab.setAction(action);
309 public List<SupportedParameterValues> getSupportedParameterValues() {
310 // supported parameter does not contain parameter type - it means all strings are supported
311 return ImmutableList.<SupportedParameterValues>of(new SupportedParameterValuesBuilder()
312 .setParameterName(new ParameterName(ChainActionDefinition.SFC_CHAIN_NAME)).build());