| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.apache.ambari.metrics.core.timeline.sink; |
| |
| import java.util.Collection; |
| import java.util.Properties; |
| import java.util.concurrent.Future; |
| |
| import org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration; |
| import org.apache.ambari.metrics.core.timeline.source.InternalSourceProvider; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics; |
| import org.apache.kafka.clients.producer.KafkaProducer; |
| import org.apache.kafka.clients.producer.Producer; |
| import org.apache.kafka.clients.producer.ProducerConfig; |
| import org.apache.kafka.clients.producer.ProducerRecord; |
| import org.apache.kafka.clients.producer.RecordMetadata; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_ACKS; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_BATCH_SIZE; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_BUFFER_MEM; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_LINGER_MS; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_RETRIES; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_SERVERS; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.KAFKA_SINK_TIMEOUT_SECONDS; |
| import static org.apache.ambari.metrics.core.timeline.TimelineMetricConfiguration.TIMELINE_METRICS_CACHE_COMMIT_INTERVAL; |
| |
| /* |
| This will be used by the single Metrics committer thread. Hence it is |
| important to make this non-blocking export. |
| */ |
| public class KafkaSinkProvider implements ExternalSinkProvider { |
| private static String TOPIC_NAME = "ambari-metrics-topic"; |
| private static final Log LOG = LogFactory.getLog(KafkaSinkProvider.class); |
| |
| private Producer producer; |
| private int TIMEOUT_SECONDS = 10; |
| private int FLUSH_SECONDS = 3; |
| |
| ObjectMapper objectMapper = new ObjectMapper(); |
| |
| public KafkaSinkProvider() { |
| TimelineMetricConfiguration configuration = TimelineMetricConfiguration.getInstance(); |
| |
| Properties configProperties = new Properties(); |
| try { |
| configProperties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, configuration.getMetricsConf().getTrimmed(KAFKA_SERVERS)); |
| configProperties.put(ProducerConfig.ACKS_CONFIG, configuration.getMetricsConf().getTrimmed(KAFKA_ACKS, "all")); |
| // Avoid duplicates - No transactional semantics |
| configProperties.put(ProducerConfig.RETRIES_CONFIG, configuration.getMetricsConf().getInt(KAFKA_RETRIES, 0)); |
| configProperties.put(ProducerConfig.BATCH_SIZE_CONFIG, configuration.getMetricsConf().getInt(KAFKA_BATCH_SIZE, 128)); |
| configProperties.put(ProducerConfig.LINGER_MS_CONFIG, configuration.getMetricsConf().getInt(KAFKA_LINGER_MS, 1)); |
| configProperties.put(ProducerConfig.BUFFER_MEMORY_CONFIG, configuration.getMetricsConf().getLong(KAFKA_BUFFER_MEM, 33554432)); // 32 MB |
| FLUSH_SECONDS = configuration.getMetricsConf().getInt(TIMELINE_METRICS_CACHE_COMMIT_INTERVAL, 3); |
| TIMEOUT_SECONDS = configuration.getMetricsConf().getInt(KAFKA_SINK_TIMEOUT_SECONDS, 10); |
| } catch (Exception e) { |
| LOG.error("Configuration error!", e); |
| throw new ExceptionInInitializerError(e); |
| } |
| configProperties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,"org.apache.kafka.common.serialization.ByteArraySerializer"); |
| configProperties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,"org.apache.kafka.connect.json.JsonSerializer"); |
| |
| |
| |
| producer = new KafkaProducer(configProperties); |
| } |
| |
| @Override |
| public ExternalMetricsSink getExternalMetricsSink(InternalSourceProvider.SOURCE_NAME sourceName) { |
| switch (sourceName) { |
| case RAW_METRICS: |
| return new KafkaRawMetricsSink(); |
| default: |
| throw new UnsupportedOperationException("Provider does not support " + |
| "the expected source " + sourceName); |
| } |
| } |
| |
| class KafkaRawMetricsSink implements ExternalMetricsSink { |
| |
| @Override |
| public int getSinkTimeOutSeconds() { |
| return TIMEOUT_SECONDS; |
| } |
| |
| @Override |
| public int getFlushSeconds() { |
| return FLUSH_SECONDS; |
| } |
| |
| @Override |
| public void sinkMetricData(Collection<TimelineMetrics> metrics) { |
| JsonNode jsonNode = objectMapper.valueToTree(metrics); |
| ProducerRecord<String, JsonNode> rec = new ProducerRecord<String, JsonNode>(TOPIC_NAME, jsonNode); |
| Future<RecordMetadata> f = producer.send(rec); |
| } |
| } |
| |
| } |