| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.provider.of.meter.impl; |
| |
| import com.google.common.cache.Cache; |
| import com.google.common.cache.CacheBuilder; |
| import com.google.common.cache.RemovalCause; |
| import com.google.common.cache.RemovalNotification; |
| import com.google.common.collect.Maps; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.meter.Meter; |
| import org.onosproject.net.meter.MeterFailReason; |
| import org.onosproject.net.meter.MeterOperation; |
| import org.onosproject.net.meter.MeterOperations; |
| import org.onosproject.net.meter.MeterProvider; |
| import org.onosproject.net.meter.MeterProviderRegistry; |
| import org.onosproject.net.meter.MeterProviderService; |
| import org.onosproject.net.provider.AbstractProvider; |
| import org.onosproject.net.provider.ProviderId; |
| import org.onosproject.openflow.controller.Dpid; |
| import org.onosproject.openflow.controller.OpenFlowController; |
| import org.onosproject.openflow.controller.OpenFlowEventListener; |
| import org.onosproject.openflow.controller.OpenFlowSwitch; |
| import org.onosproject.openflow.controller.OpenFlowSwitchListener; |
| import org.onosproject.openflow.controller.RoleState; |
| import org.projectfloodlight.openflow.protocol.OFErrorMsg; |
| import org.projectfloodlight.openflow.protocol.OFErrorType; |
| import org.projectfloodlight.openflow.protocol.OFMessage; |
| import org.projectfloodlight.openflow.protocol.OFPortStatus; |
| import org.projectfloodlight.openflow.protocol.OFStatsReply; |
| import org.projectfloodlight.openflow.protocol.OFVersion; |
| import org.projectfloodlight.openflow.protocol.errormsg.OFMeterModFailedErrorMsg; |
| import org.slf4j.Logger; |
| |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Provider which uses an OpenFlow controller to handle meters. |
| */ |
| @Component(immediate = true, enabled = false) |
| public class OpenFlowMeterProvider extends AbstractProvider implements MeterProvider { |
| |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected OpenFlowController controller; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MeterProviderRegistry providerRegistry; |
| |
| private MeterProviderService providerService; |
| |
| private static final AtomicLong XID_COUNTER = new AtomicLong(1); |
| |
| static final int POLL_INTERVAL = 10; |
| static final long TIMEOUT = 30; |
| |
| private Cache<Integer, MeterOperation> pendingOperations; |
| private Cache<Long, MeterOperation> pendingXid; |
| |
| |
| private InternalMeterListener listener = new InternalMeterListener(); |
| private Map<Dpid, MeterStatsCollector> collectors = Maps.newHashMap(); |
| |
| /** |
| * Creates a OpenFlow meter provider. |
| */ |
| public OpenFlowMeterProvider() { |
| super(new ProviderId("of", "org.onosproject.provider.meter")); |
| } |
| |
| @Activate |
| public void activate() { |
| providerService = providerRegistry.register(this); |
| |
| pendingOperations = CacheBuilder.newBuilder() |
| .expireAfterWrite(TIMEOUT, TimeUnit.SECONDS) |
| .removalListener((RemovalNotification<Integer, MeterOperation> notification) -> { |
| if (notification.getCause() == RemovalCause.EXPIRED) { |
| providerService.meterOperationFailed(notification.getValue(), |
| MeterFailReason.TIMEOUT); |
| } |
| }).build(); |
| |
| controller.addEventListener(listener); |
| controller.addListener(listener); |
| |
| controller.getSwitches().forEach((sw -> createStatsCollection(sw))); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| providerRegistry.unregister(this); |
| controller.removeEventListener(listener); |
| controller.removeListener(listener); |
| providerService = null; |
| } |
| |
| @Override |
| public void performMeterOperation(DeviceId deviceId, MeterOperations meterOps) { |
| Dpid dpid = Dpid.dpid(deviceId.uri()); |
| OpenFlowSwitch sw = controller.getSwitch(dpid); |
| if (sw == null) { |
| log.error("Unknown device {}", deviceId); |
| meterOps.operations().forEach(op -> |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN_DEVICE) |
| ); |
| return; |
| } |
| |
| meterOps.operations().forEach(op -> performOperation(sw, op)); |
| } |
| |
| @Override |
| public void performMeterOperation(DeviceId deviceId, MeterOperation meterOp) { |
| Dpid dpid = Dpid.dpid(deviceId.uri()); |
| OpenFlowSwitch sw = controller.getSwitch(dpid); |
| if (sw == null) { |
| log.error("Unknown device {}", deviceId); |
| providerService.meterOperationFailed(meterOp, |
| MeterFailReason.UNKNOWN_DEVICE); |
| return; |
| } |
| |
| } |
| |
| private void performOperation(OpenFlowSwitch sw, MeterOperation op) { |
| |
| pendingOperations.put(op.meter().id().id(), op); |
| |
| |
| Meter meter = op.meter(); |
| MeterModBuilder builder = MeterModBuilder.builder(meter.id().id(), sw.factory()); |
| if (meter.isBurst()) { |
| builder.burst(); |
| } |
| builder.withBands(meter.bands()) |
| .withId(meter.id()) |
| .withRateUnit(meter.unit()); |
| |
| switch (op.type()) { |
| case ADD: |
| sw.sendMsg(builder.add()); |
| break; |
| case REMOVE: |
| sw.sendMsg(builder.remove()); |
| break; |
| case MODIFY: |
| sw.sendMsg(builder.modify()); |
| break; |
| default: |
| log.warn("Unknown Meter command {}; not sending anything", |
| op.type()); |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN_COMMAND); |
| } |
| |
| } |
| |
| private void createStatsCollection(OpenFlowSwitch sw) { |
| if (isMeterSupported(sw)) { |
| MeterStatsCollector msc = new MeterStatsCollector(sw, POLL_INTERVAL); |
| msc.start(); |
| collectors.put(new Dpid(sw.getId()), msc); |
| } |
| } |
| |
| private boolean isMeterSupported(OpenFlowSwitch sw) { |
| if (sw.factory().getVersion() == OFVersion.OF_10 || |
| sw.factory().getVersion() == OFVersion.OF_11 || |
| sw.factory().getVersion() == OFVersion.OF_12) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| private void pushMeterStats(Dpid dpid, OFStatsReply msg) { |
| |
| } |
| |
| private void signalMeterError(OFMeterModFailedErrorMsg meterError, |
| MeterOperation op) { |
| switch (meterError.getCode()) { |
| case UNKNOWN: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN_DEVICE); |
| break; |
| case METER_EXISTS: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.EXISTING_METER); |
| break; |
| case INVALID_METER: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.INVALID_METER); |
| break; |
| case UNKNOWN_METER: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN); |
| break; |
| case BAD_COMMAND: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN_COMMAND); |
| break; |
| case BAD_FLAGS: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN_FLAGS); |
| break; |
| case BAD_RATE: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.BAD_RATE); |
| break; |
| case BAD_BURST: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.BAD_BURST); |
| break; |
| case BAD_BAND: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.BAD_BAND); |
| break; |
| case BAD_BAND_VALUE: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.BAD_BAND_VALUE); |
| break; |
| case OUT_OF_METERS: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.OUT_OF_METERS); |
| break; |
| case OUT_OF_BANDS: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.OUT_OF_BANDS); |
| break; |
| default: |
| providerService.meterOperationFailed(op, |
| MeterFailReason.UNKNOWN); |
| } |
| } |
| |
| private class InternalMeterListener |
| implements OpenFlowSwitchListener, OpenFlowEventListener { |
| @Override |
| public void handleMessage(Dpid dpid, OFMessage msg) { |
| switch (msg.getType()) { |
| case STATS_REPLY: |
| pushMeterStats(dpid, (OFStatsReply) msg); |
| break; |
| case ERROR: |
| OFErrorMsg error = (OFErrorMsg) msg; |
| if (error.getErrType() == OFErrorType.METER_MOD_FAILED) { |
| MeterOperation op = |
| pendingOperations.getIfPresent(error.getXid()); |
| pendingOperations.invalidate(error.getXid()); |
| if (op == null) { |
| log.warn("Unknown Meter operation failed {}", error); |
| } else { |
| OFMeterModFailedErrorMsg meterError = |
| (OFMeterModFailedErrorMsg) error; |
| signalMeterError(meterError, op); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| |
| } |
| |
| @Override |
| public void switchAdded(Dpid dpid) { |
| createStatsCollection(controller.getSwitch(dpid)); |
| } |
| |
| @Override |
| public void switchRemoved(Dpid dpid) { |
| MeterStatsCollector msc = collectors.remove(dpid); |
| if (msc != null) { |
| msc.stop(); |
| } |
| } |
| |
| @Override |
| public void switchChanged(Dpid dpid) { |
| |
| } |
| |
| @Override |
| public void portChanged(Dpid dpid, OFPortStatus status) { |
| |
| } |
| |
| @Override |
| public void receivedRoleReply(Dpid dpid, RoleState requested, RoleState response) { |
| |
| } |
| } |
| |
| |
| |
| } |