2 * Copyright (c) 2015 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
8 package org.opendaylight.openflowplugin.api.openflow.role;
10 import java.util.concurrent.Future;
11 import org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException;
12 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
13 import org.opendaylight.openflowplugin.api.openflow.device.RequestContextStack;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.OfpRole;
17 * Created by kramesha on 9/12/15.
19 public interface RoleContext extends RoleChangeListener, RequestContextStack {
21 void setTxLockOwned(boolean txLockOwned);
23 void promoteStateToWorking();
25 OfpRole getPropagatingRole();
27 void setPropagatingRole(OfpRole propagatingRole);
29 /** available states the {@link RoleContext} can exist in */
30 enum ROLE_CONTEXT_STATE {
32 * before consequences of first entity ownership election are completely settled
33 * (lock acquired, data written, role propagated onto device)
39 * <li>first entity ownership election settled</li>
40 * <li>and device disconnected or {@link DeviceContext#close()} invoked</li>
44 /** after {@link DeviceContext#close()} invoked */
49 * Initialization method is responsible for a registration of
50 * {@link org.opendaylight.controller.md.sal.common.api.clustering.Entity}
51 * and listen for notification from service. {@link Future} returned object is used primary
52 * for new connection initialization phase where we have to wait for actual Role.
53 * The {@link Future} has to be canceled if device is in disconnected state or when
54 * {@link org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService} returns
55 * {@link org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException}
57 void initialization() throws CandidateAlreadyRegisteredException;
60 * Transaction Candidate will provide safe way to correctly finish TxChainManager from
61 * last Node Master. It means only Master of TxEntity could hold TxChainFactory and
62 * active TransactionChain to write Data to Distributed DataStore.
64 void setupTxCandidate() throws CandidateAlreadyRegisteredException;
67 * UnregistrationTxCandidate from OwnershipService
69 void suspendTxCandidate();
74 DeviceContext getDeviceContext();
76 ROLE_CONTEXT_STATE getState();
78 boolean isTxLockOwned();