Carmelo Cascone | 0831efb | 2016-05-31 14:50:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onosproject.provider.bmv2.device.impl; |
| 18 | |
| 19 | import com.google.common.collect.Lists; |
| 20 | import org.apache.commons.lang3.tuple.Pair; |
| 21 | import org.onosproject.bmv2.api.runtime.Bmv2Action; |
| 22 | import org.onosproject.bmv2.api.runtime.Bmv2DeviceAgent; |
| 23 | import org.onosproject.bmv2.api.runtime.Bmv2RuntimeException; |
| 24 | import org.onosproject.net.Port; |
| 25 | import org.onosproject.net.device.DefaultPortStatistics; |
| 26 | import org.onosproject.net.device.PortStatistics; |
| 27 | import org.slf4j.Logger; |
| 28 | import org.slf4j.LoggerFactory; |
| 29 | |
| 30 | import java.util.Collection; |
| 31 | import java.util.List; |
| 32 | |
| 33 | /** |
| 34 | * Utility class to read port statistics from a BMv2 device. |
| 35 | */ |
| 36 | final class Bmv2PortStatisticsGetter { |
| 37 | |
| 38 | // TODO: make counters configuration dependent |
| 39 | |
| 40 | private static final String TABLE_NAME = "port_count_table"; |
| 41 | private static final String ACTION_NAME = "count_packet"; |
| 42 | private static final String EGRESS_COUNTER = "egress_port_counter"; |
| 43 | private static final String INGRESS_COUNTER = "ingress_port_counter"; |
| 44 | |
| 45 | private static final Logger log = LoggerFactory.getLogger(Bmv2PortStatisticsGetter.class); |
| 46 | |
| 47 | private Bmv2PortStatisticsGetter() { |
| 48 | // ban constructor. |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Returns a collection of port statistics for given ports using the given BMv2 device agent. |
| 53 | * |
| 54 | * @param deviceAgent a device agent |
| 55 | * @param ports a collection of ports |
| 56 | * @return a collection of port statistics |
| 57 | */ |
| 58 | static Collection<PortStatistics> getPortStatistics(Bmv2DeviceAgent deviceAgent, Collection<Port> ports) { |
| 59 | |
| 60 | List<PortStatistics> ps = Lists.newArrayList(); |
| 61 | |
| 62 | for (Port port : ports) { |
| 63 | int portNumber = (int) port.number().toLong(); |
| 64 | try { |
| 65 | Pair<Long, Long> egressCounter = deviceAgent.readCounter(EGRESS_COUNTER, portNumber); |
| 66 | Pair<Long, Long> ingressCounter = deviceAgent.readCounter(INGRESS_COUNTER, portNumber); |
| 67 | ps.add(DefaultPortStatistics.builder() |
| 68 | .setPort(portNumber) |
| 69 | .setBytesSent(egressCounter.getLeft()) |
| 70 | .setPacketsSent(egressCounter.getRight()) |
| 71 | .setBytesReceived(ingressCounter.getLeft()) |
| 72 | .setPacketsReceived(ingressCounter.getRight()) |
| 73 | .build()); |
| 74 | } catch (Bmv2RuntimeException e) { |
| 75 | log.info("Unable to read port statistics from {}: {}", port, e.explain()); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | return ps; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Initialize port counters on the given device agent. |
| 84 | * |
| 85 | * @param deviceAgent a device agent. |
| 86 | */ |
| 87 | static void initCounters(Bmv2DeviceAgent deviceAgent) { |
| 88 | try { |
| 89 | deviceAgent.setTableDefaultAction(TABLE_NAME, Bmv2Action.builder().withName(ACTION_NAME).build()); |
| 90 | } catch (Bmv2RuntimeException e) { |
| 91 | log.debug("Failed to provision counters on {}: {}", deviceAgent.deviceId(), e.explain()); |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |