renderers/iovisor/src/main/java/org/opendaylight/groupbasedpolicy/renderer/iovisor/IovisorResolvedEndpointListener.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
   3  *
   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
   7  */
   8
   9 package org.opendaylight.groupbasedpolicy.renderer.iovisor;
  10
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  13 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  14 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.groupbasedpolicy.renderer.iovisor.utils.IovisorIidFactory;
  17 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  18 import org.opendaylight.groupbasedpolicy.util.DataTreeChangeHandler;
  19 import org.opendaylight.groupbasedpolicy.util.IidFactory;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.EndpointGroupId;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.iovisor.rev151030.IovisorResolvedEndpointsByTenantByEndpointgroupId;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.iovisor.rev151030.iovisor.resolved.endpoints.by.tenant.by.endpointgroup.id.IovisorResolvedEndpointByTenantByEndpointgroupId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.interests.followed.tenants.followed.tenant.FollowedEndpointGroup;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.interests.followed.tenants.followed.tenant.FollowedEndpointGroupBuilder;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import com.google.common.annotations.VisibleForTesting;
  31
  32 public class IovisorResolvedEndpointListener
  33         extends DataTreeChangeHandler<IovisorResolvedEndpointsByTenantByEndpointgroupId> {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(IovisorResolvedEndpointListener.class);
  36
  37     protected IovisorResolvedEndpointListener(DataBroker dataprovider) {
  38         super(dataprovider);
  39         registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
  40                 IovisorIidFactory.iovisorResolvedEndpointsByTenantIdByEndpointGroupIdWildCardIid()));
  41     }
  42
  43     @Override
  44     protected void onWrite(DataObjectModification<IovisorResolvedEndpointsByTenantByEndpointgroupId> rootNode,
  45             InstanceIdentifier<IovisorResolvedEndpointsByTenantByEndpointgroupId> rootIdentifier) {
  46         onSubtreeModified(rootNode, rootIdentifier);
  47     }
  48
  49     @Override
  50     protected void onDelete(DataObjectModification<IovisorResolvedEndpointsByTenantByEndpointgroupId> rootNode,
  51             InstanceIdentifier<IovisorResolvedEndpointsByTenantByEndpointgroupId> rootIdentifier) {
  52         throw new UnsupportedOperationException("Not implemented yet.");
  53
  54     }
  55
  56     @Override
  57     protected void onSubtreeModified(DataObjectModification<IovisorResolvedEndpointsByTenantByEndpointgroupId> rootNode,
  58             InstanceIdentifier<IovisorResolvedEndpointsByTenantByEndpointgroupId> rootIdentifier) {
  59         for (IovisorResolvedEndpointByTenantByEndpointgroupId element : rootNode.getDataAfter()
  60             .getIovisorResolvedEndpointByTenantByEndpointgroupId()) {
  61             endpointPolicyUpdated(element.getTenantId(), element.getEndpointgroupId(),
  62                     this.dataProvider.newWriteOnlyTransaction());
  63         }
  64     }
  65
  66     @VisibleForTesting
  67     void endpointPolicyUpdated(TenantId tenantId, EndpointGroupId epgId, WriteTransaction wTx) {
  68         // TODO a renderer should remove followed-EPG and followed-tenant at some point
  69         FollowedEndpointGroup followedEpg = new FollowedEndpointGroupBuilder().setId(epgId).build();
  70         wTx.put(LogicalDatastoreType.OPERATIONAL,
  71                 IidFactory.followedEndpointgroupIid(IovisorRenderer.RENDERER_NAME, tenantId, epgId), followedEpg, true);
  72         if (DataStoreHelper.submitToDs(wTx)) {
  73             LOG.info("IovisorRenderer following Tenant {} EndpointGroup {}", tenantId.getValue(), epgId.getValue());
  74             return;
  75         } else {
  76             LOG.error("IovisorRenderer could not follow Tenant {} EndpointGroup {}", tenantId.getValue(),
  77                     epgId.getValue());
  78             return;
  79         }
  80     }
  81
  82 }