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
9 package org.opendaylight.openflowplugin.api.openflow.device;
11 import io.netty.util.Timeout;
12 import java.math.BigInteger;
13 import java.util.List;
14 import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
15 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
16 import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
18 import org.opendaylight.openflowplugin.api.openflow.OpenFlowPluginTimer;
19 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
20 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceContextClosedHandler;
21 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceDisconnectedHandler;
22 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceReplyProcessor;
23 import org.opendaylight.openflowplugin.api.openflow.device.handlers.MultiMsgCollector;
24 import org.opendaylight.openflowplugin.api.openflow.registry.ItemLifeCycleRegistry;
25 import org.opendaylight.openflowplugin.api.openflow.registry.flow.DeviceFlowRegistry;
26 import org.opendaylight.openflowplugin.api.openflow.registry.group.DeviceGroupRegistry;
27 import org.opendaylight.openflowplugin.api.openflow.registry.meter.DeviceMeterRegistry;
28 import org.opendaylight.openflowplugin.api.openflow.rpc.RpcContext;
29 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.MessageSpy;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReply;
31 import org.opendaylight.yangtools.yang.binding.DataObject;
32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
36 * The central entity of OFP is the Device Context, which encapsulate the logical state of a switch
37 * as seen by the controller. Each OpenFlow session is tracked by a Connection Context.
38 * These attach to a particular Device Context in such a way, that there is at most one primary
39 * session associated with a Device Context. Whenever the controller needs to interact with a
40 * particular switch, it will do so in the context of the calling thread, obtaining a lock on
41 * the corresponding Device Context – thus the Device Context becomes the fine-grained point
42 * of synchronization. The only two entities allowed to send requests towards the switch are
43 * Statistics Manager and RPC Manager. Each of them allocates a Request Context for interacting
44 * with a particular Device Context. The Request Contexts are the basic units of fairness,
45 * which is enforced by keeping a cap on the number of outstanding requests a particular Request
46 * Context can have at any point in time. Should this quota be exceeded, any further attempt to make
47 * a request to the switch will fail immediately, with proper error indication.
49 * Created by Martin Bobak <mbobak@cisco.com> on 25.2.2015.
51 public interface DeviceContext extends AutoCloseable,
54 DeviceDisconnectedHandler,
59 * Method add auxiliary connection contexts to this context representing single device connection.
61 * @param connectionContext
63 void addAuxiliaryConenctionContext(ConnectionContext connectionContext);
66 * Method removes auxiliary connection context from this context representing single device connection.
68 * @param connectionContext
70 void removeAuxiliaryConenctionContext(ConnectionContext connectionContext);
74 * Method provides state of device represented by this device context.
76 * @return {@link DeviceState}
78 DeviceState getDeviceState();
81 * Method creates put operation using provided data in underlying transaction chain.
83 <T extends DataObject> void writeToTransaction(final LogicalDatastoreType store, final InstanceIdentifier<T> path, final T data);
86 * Method creates delete operation for provided path in underlying transaction chain.
88 <T extends DataObject> void addDeleteToTxChain(final LogicalDatastoreType store, final InstanceIdentifier<T> path);
91 * Method submits Transaction to DataStore.
92 * @return transaction is submitted successfully
94 boolean submitTransaction();
97 * Method exposes transaction created for device
98 * represented by this context. This read only transaction has a fresh dataStore snapshot.
99 * There is a possibility to get different data set from DataStore
100 * as write transaction in this context.
102 ReadTransaction getReadTransaction();
106 * Method provides current devices connection context.
110 ConnectionContext getPrimaryConnectionContext();
113 * Method provides current devices auxiliary connection contexts.
117 ConnectionContext getAuxiliaryConnectiobContexts(BigInteger cookie);
120 * Method exposes flow registry used for storing flow ids identified by calculated flow hash.
124 DeviceFlowRegistry getDeviceFlowRegistry();
127 * Method exposes device group registry used for storing group ids.
131 DeviceGroupRegistry getDeviceGroupRegistry();
134 * Method exposes device meter registry used for storing meter ids.
138 DeviceMeterRegistry getDeviceMeterRegistry();
142 * @return translator library
144 TranslatorLibrary oook();
147 * store cancellable timeout handler of currently running barrier task
149 void setCurrentBarrierTimeout(Timeout timeout);
152 * @return cancellable timeout handle of currently running barrier task
154 Timeout getBarrierTaskTimeout();
157 * Sets notification service
159 * @param notificationService
161 void setNotificationService(NotificationService notificationService);
163 void setNotificationPublishService(NotificationPublishService notificationPublishService);
165 MessageSpy getMessageSpy();
168 * Method sets reference to handler used for cleanup after device context about to be closed.
170 void addDeviceContextClosedHandler(DeviceContextClosedHandler deviceContextClosedHandler);
172 MultiMsgCollector getMultiMsgCollector(final RequestContext<List<MultipartReply>> requestContext);
174 Long getReservedXid();
177 * indicates that device context is fully published (e.g.: packetIn messages should be passed)
182 * change packetIn rate limiter borders
184 * @param upperBound max amount of outstanding packetIns
186 void updatePacketInRateLimit(long upperBound);
189 * @return registry point for item life cycle sources of device
191 ItemLifeCycleRegistry getItemLifeCycleSourceRegistry();
193 void setRpcContext(RpcContext rpcContext);
195 RpcContext getRpcContext();
198 * Callback when confirmed that device is disconnected from cluster
200 void onDeviceDisconnectedFromCluster();