CNlucius | b786e61 | 2015-08-20 14:36:29 +0800 | [diff] [blame^] | 1 | /*
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| 2 | * Copyright 2015 Open Networking Laboratory
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.onosproject.ovsdb.provider.host;
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| 17 |
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| 18 | import static com.google.common.base.Preconditions.checkNotNull;
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| 19 | import static org.onlab.util.Tools.toHex;
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| 20 | import static org.slf4j.LoggerFactory.getLogger;
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| 21 |
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| 22 | import java.net.URI;
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| 23 | import java.net.URISyntaxException;
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| 24 |
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| 25 | import org.apache.felix.scr.annotations.Activate;
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| 26 | import org.apache.felix.scr.annotations.Component;
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| 27 | import org.apache.felix.scr.annotations.Deactivate;
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| 28 | import org.apache.felix.scr.annotations.Reference;
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| 29 | import org.apache.felix.scr.annotations.ReferenceCardinality;
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| 30 | import org.apache.felix.scr.annotations.Service;
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| 31 | import org.onlab.packet.VlanId;
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| 32 | import org.onosproject.core.CoreService;
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| 33 | import org.onosproject.net.DefaultAnnotations;
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| 34 | import org.onosproject.net.DeviceId;
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| 35 | import org.onosproject.net.Host;
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| 36 | import org.onosproject.net.HostId;
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| 37 | import org.onosproject.net.HostLocation;
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| 38 | import org.onosproject.net.PortNumber;
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| 39 | import org.onosproject.net.SparseAnnotations;
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| 40 | import org.onosproject.net.host.DefaultHostDescription;
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| 41 | import org.onosproject.net.host.HostDescription;
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| 42 | import org.onosproject.net.host.HostProvider;
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| 43 | import org.onosproject.net.host.HostProviderRegistry;
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| 44 | import org.onosproject.net.host.HostProviderService;
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| 45 | import org.onosproject.net.host.HostService;
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| 46 | import org.onosproject.net.provider.AbstractProvider;
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| 47 | import org.onosproject.net.provider.ProviderId;
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| 48 | import org.onosproject.ovsdb.controller.EventSubject;
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| 49 | import org.onosproject.ovsdb.controller.OvsdbController;
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| 50 | import org.onosproject.ovsdb.controller.OvsdbEvent;
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| 51 | import org.onosproject.ovsdb.controller.OvsdbEventListener;
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| 52 | import org.onosproject.ovsdb.controller.OvsdbEventSubject;
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| 53 | import org.slf4j.Logger;
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| 54 |
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| 55 | /**
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| 56 | * Provider which uses an ovsdb controller to detect host.
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| 57 | */
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| 58 | @Component(immediate = true)
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| 59 | @Service
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| 60 | public class OvsdbHostProvider extends AbstractProvider implements HostProvider {
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| 61 | private final Logger log = getLogger(getClass());
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| 62 |
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| 63 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
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| 64 | protected HostProviderRegistry providerRegistry;
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| 65 |
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| 66 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
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| 67 | protected HostService hostService;
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| 68 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
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| 69 | protected CoreService coreService;
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| 70 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
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| 71 | protected OvsdbController controller;
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| 72 |
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| 73 | private HostProviderService providerService;
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| 74 | private OvsdbEventListener innerEventListener = new InnerOvsdbEventListener();
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| 75 |
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| 76 | @Activate
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| 77 | public void activate() {
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| 78 | providerService = providerRegistry.register(this);
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| 79 | controller.addOvsdbEventListener(innerEventListener);
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| 80 | log.info("Started");
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| 81 | }
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| 82 |
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| 83 | @Deactivate
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| 84 | public void deactivate() {
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| 85 | providerRegistry.unregister(this);
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| 86 | providerService = null;
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| 87 | log.info("Stopped");
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| 88 | }
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| 89 |
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| 90 | public OvsdbHostProvider() {
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| 91 | super(new ProviderId("ovsdb", "org.onosproject.ovsdb.provider.host"));
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| 92 | }
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| 93 |
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| 94 | @Override
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| 95 | public void triggerProbe(Host host) {
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| 96 | log.info("Triggering probe on host {}", host);
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| 97 | }
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| 98 |
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| 99 | private class InnerOvsdbEventListener implements OvsdbEventListener {
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| 100 |
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| 101 | @Override
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| 102 | public void handle(OvsdbEvent<EventSubject> event) {
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| 103 | OvsdbEventSubject subject = null;
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| 104 | if (event.subject() instanceof OvsdbEventSubject) {
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| 105 | subject = (OvsdbEventSubject) event.subject();
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| 106 | }
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| 107 | checkNotNull(subject, "EventSubject is not null");
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| 108 | // If ifaceid is null,it indicates this is not a vm port.
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| 109 | if (subject.ifaceid() == null) {
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| 110 | return;
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| 111 | }
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| 112 | switch (event.type()) {
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| 113 | case PORT_ADDED:
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| 114 | HostId hostId = HostId.hostId(subject.hwAddress(), null);
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| 115 | DeviceId deviceId = DeviceId.deviceId(uri(subject.dpid().value()));
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| 116 | PortNumber portNumber = PortNumber.portNumber(subject
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| 117 | .portNumber().value(), subject.portName().value());
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| 118 | HostLocation loaction = new HostLocation(deviceId, portNumber,
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| 119 | 0L);
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| 120 | SparseAnnotations annotations = DefaultAnnotations.builder()
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| 121 | .set("ifaceid", subject.ifaceid().value()).build();
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| 122 | HostDescription hostDescription = new DefaultHostDescription(
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| 123 | subject.hwAddress(),
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| 124 | VlanId.vlanId(),
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| 125 | loaction,
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| 126 | annotations);
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| 127 | providerService.hostDetected(hostId, hostDescription);
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| 128 | break;
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| 129 | case PORT_REMOVED:
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| 130 | HostId host = HostId.hostId(subject.hwAddress(), null);
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| 131 | providerService.hostVanished(host);
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| 132 | break;
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| 133 | default:
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| 134 | break;
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| 135 | }
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| 136 |
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| 137 | }
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| 138 |
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| 139 | }
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| 140 |
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| 141 | public URI uri(String value) {
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| 142 | try {
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| 143 | return new URI("of", toHex(Long.valueOf(value)), null);
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| 144 | } catch (URISyntaxException e) {
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| 145 | return null;
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| 146 | }
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| 147 | }
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| 148 | }
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