Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 1 | /** |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 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 | package org.onosproject.kafkaintegration.kafka; |
| 17 | |
| 18 | import static com.google.common.base.Strings.isNullOrEmpty; |
| 19 | import static org.onlab.util.Tools.get; |
| 20 | |
| 21 | import java.util.Dictionary; |
| 22 | |
| 23 | import org.apache.felix.scr.annotations.Activate; |
| 24 | import org.apache.felix.scr.annotations.Component; |
| 25 | import org.apache.felix.scr.annotations.Deactivate; |
| 26 | import org.apache.felix.scr.annotations.Modified; |
| 27 | import org.apache.felix.scr.annotations.Property; |
| 28 | import org.apache.felix.scr.annotations.Reference; |
| 29 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 30 | import org.apache.felix.scr.annotations.Service; |
| 31 | import org.onosproject.cfg.ComponentConfigService; |
| 32 | import org.onosproject.kafkaintegration.api.KafkaConfigService; |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 33 | import org.onosproject.kafkaintegration.api.KafkaPublisherAdminService; |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 34 | import org.onosproject.kafkaintegration.api.dto.KafkaServerConfig; |
| 35 | import org.osgi.service.component.ComponentContext; |
| 36 | import org.slf4j.Logger; |
| 37 | import org.slf4j.LoggerFactory; |
| 38 | |
| 39 | @Component(immediate = true) |
| 40 | @Service |
| 41 | public class KafkaConfigManager implements KafkaConfigService { |
| 42 | |
| 43 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 44 | |
| 45 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 46 | protected ComponentConfigService componentConfigService; |
| 47 | |
| 48 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 49 | protected KafkaPublisherAdminService kafkaPublisherAdminService; |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 50 | |
| 51 | public static final String BOOTSTRAP_SERVERS = "localhost:9092"; |
| 52 | private String kafkaServerIp = |
| 53 | BOOTSTRAP_SERVERS.substring(0, BOOTSTRAP_SERVERS.indexOf(":")); |
| 54 | private String kafkaServerPortNum = |
| 55 | BOOTSTRAP_SERVERS.substring(BOOTSTRAP_SERVERS.indexOf(":") + 1, |
| 56 | BOOTSTRAP_SERVERS.length()); |
| 57 | |
| 58 | private static final int RETRIES = 1; |
| 59 | private static final int MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION = 5; |
| 60 | private static final int REQUEST_REQUIRED_ACKS = 1; |
| 61 | private static final String KEY_SERIALIZER = |
| 62 | "org.apache.kafka.common.serialization.StringSerializer"; |
| 63 | private static final String VALUE_SERIALIZER = |
| 64 | "org.apache.kafka.common.serialization.ByteArraySerializer"; |
| 65 | |
| 66 | @Property(name = "bootstrap.servers", value = BOOTSTRAP_SERVERS, |
| 67 | label = "Default IP/Port pair to establish initial connection to Kafka cluster.") |
| 68 | protected String bootstrapServers = BOOTSTRAP_SERVERS; |
| 69 | |
| 70 | @Property(name = "retries", intValue = RETRIES, |
| 71 | label = "Number of times the producer can retry to send after first failure") |
| 72 | protected int retries = RETRIES; |
| 73 | |
| 74 | @Property(name = "max.in.flight.requests.per.connection", |
| 75 | intValue = MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION, |
| 76 | label = "The maximum number of unacknowledged requests the client will send before blocking") |
| 77 | protected int maxInFlightRequestsPerConnection = |
| 78 | MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION; |
| 79 | |
| 80 | @Property(name = "request.required.acks", intValue = 1, |
| 81 | label = "Producer will get an acknowledgement after the leader has replicated the data") |
| 82 | protected int requestRequiredAcks = REQUEST_REQUIRED_ACKS; |
| 83 | |
| 84 | @Property(name = "key.serializer", value = KEY_SERIALIZER, |
| 85 | label = "Serializer class for key that implements the Serializer interface.") |
| 86 | protected String keySerializer = KEY_SERIALIZER; |
| 87 | |
| 88 | @Property(name = "value.serializer", value = VALUE_SERIALIZER, |
| 89 | label = "Serializer class for value that implements the Serializer interface.") |
| 90 | protected String valueSerializer = VALUE_SERIALIZER; |
| 91 | |
| 92 | @Activate |
| 93 | protected void activate(ComponentContext context) { |
| 94 | componentConfigService.registerProperties(getClass()); |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 95 | kafkaPublisherAdminService.start(getConfigParams()); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 96 | log.info("Started"); |
| 97 | } |
| 98 | |
| 99 | @Deactivate |
| 100 | protected void deactivate() { |
| 101 | componentConfigService.unregisterProperties(getClass(), false); |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 102 | kafkaPublisherAdminService.stop(); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 103 | log.info("Stopped"); |
| 104 | } |
| 105 | |
| 106 | @Modified |
| 107 | private void modified(ComponentContext context) { |
| 108 | if (context == null) { |
| 109 | bootstrapServers = BOOTSTRAP_SERVERS; |
| 110 | retries = RETRIES; |
| 111 | maxInFlightRequestsPerConnection = |
| 112 | MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION; |
| 113 | requestRequiredAcks = REQUEST_REQUIRED_ACKS; |
| 114 | keySerializer = KEY_SERIALIZER; |
| 115 | valueSerializer = VALUE_SERIALIZER; |
| 116 | return; |
| 117 | } |
| 118 | |
| 119 | Dictionary<?, ?> properties = context.getProperties(); |
| 120 | |
| 121 | String newBootstrapServers; |
| 122 | int newRetries; |
| 123 | int newMaxInFlightRequestsPerConnection; |
| 124 | int newRequestRequiredAcks; |
| 125 | try { |
| 126 | String s = get(properties, "bootstrap.servers"); |
| 127 | newBootstrapServers = |
| 128 | isNullOrEmpty(s) ? bootstrapServers : s.trim(); |
| 129 | |
| 130 | s = get(properties, "retries"); |
| 131 | newRetries = |
| 132 | isNullOrEmpty(s) ? retries : Integer.parseInt(s.trim()); |
| 133 | |
| 134 | s = get(properties, "max.in.flight.requests.per.connection"); |
| 135 | newMaxInFlightRequestsPerConnection = |
| 136 | isNullOrEmpty(s) ? maxInFlightRequestsPerConnection |
| 137 | : Integer.parseInt(s.trim()); |
| 138 | |
| 139 | s = get(properties, "request.required.acks"); |
| 140 | newRequestRequiredAcks = |
| 141 | isNullOrEmpty(s) ? requestRequiredAcks |
| 142 | : Integer.parseInt(s.trim()); |
| 143 | |
| 144 | } catch (NumberFormatException | ClassCastException e) { |
| 145 | return; |
| 146 | } |
| 147 | |
| 148 | if (configModified(newBootstrapServers, newRetries, |
| 149 | newMaxInFlightRequestsPerConnection, |
| 150 | newRequestRequiredAcks)) { |
| 151 | bootstrapServers = newBootstrapServers; |
| 152 | kafkaServerIp = bootstrapServers |
| 153 | .substring(0, bootstrapServers.indexOf(":")); |
| 154 | kafkaServerPortNum = bootstrapServers |
| 155 | .substring(bootstrapServers.indexOf(":") + 1, |
| 156 | bootstrapServers.length()); |
| 157 | |
| 158 | retries = newRetries; |
| 159 | |
| 160 | maxInFlightRequestsPerConnection = |
| 161 | newMaxInFlightRequestsPerConnection; |
| 162 | |
| 163 | requestRequiredAcks = newRequestRequiredAcks; |
| 164 | |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 165 | kafkaPublisherAdminService.restart(KafkaServerConfig.builder() |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 166 | .ipAddress(kafkaServerIp).port(kafkaServerPortNum) |
| 167 | .numOfRetries(retries) |
| 168 | .maxInFlightRequestsPerConnection(maxInFlightRequestsPerConnection) |
| 169 | .acksRequired(requestRequiredAcks) |
| 170 | .keySerializer(keySerializer) |
| 171 | .valueSerializer(valueSerializer).build()); |
| 172 | |
| 173 | log.info("Kafka Server Config has been Modified - " |
| 174 | + "bootstrapServers {}, retries {}, " |
| 175 | + "maxInFlightRequestsPerConnection {}, " |
| 176 | + "requestRequiredAcks {}", bootstrapServers, retries, |
| 177 | maxInFlightRequestsPerConnection, requestRequiredAcks); |
| 178 | } else { |
| 179 | return; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | private boolean configModified(String newBootstrapServers, int newRetries, |
| 184 | int newMaxInFlightRequestsPerConnection, |
| 185 | int newRequestRequiredAcks) { |
| 186 | |
| 187 | return !newBootstrapServers.equals(bootstrapServers) |
| 188 | || newRetries != retries |
| 189 | || newMaxInFlightRequestsPerConnection != maxInFlightRequestsPerConnection |
| 190 | || newRequestRequiredAcks != requestRequiredAcks; |
| 191 | |
| 192 | } |
| 193 | |
| 194 | @Override |
| 195 | public KafkaServerConfig getConfigParams() { |
| 196 | String ipAddr = |
| 197 | bootstrapServers.substring(0, bootstrapServers.indexOf(":")); |
| 198 | String port = |
| 199 | bootstrapServers.substring(bootstrapServers.indexOf(":") + 1, |
| 200 | bootstrapServers.length()); |
| 201 | |
| 202 | return KafkaServerConfig.builder().ipAddress(ipAddr).port(port) |
| 203 | .numOfRetries(retries) |
| 204 | .maxInFlightRequestsPerConnection(maxInFlightRequestsPerConnection) |
| 205 | .acksRequired(requestRequiredAcks).keySerializer(keySerializer) |
| 206 | .valueSerializer(valueSerializer).build(); |
| 207 | |
| 208 | } |
| 209 | |
| 210 | } |