| /* |
| * 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 |
| * |
| * 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.apache.storm.opentsdb.bolt; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.storm.opentsdb.OpenTsdbMetricDatapoint; |
| import org.apache.storm.opentsdb.client.ClientResponse; |
| import org.apache.storm.opentsdb.client.OpenTsdbClient; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.topology.base.BaseRichBolt; |
| import org.apache.storm.tuple.Tuple; |
| import org.apache.storm.utils.BatchHelper; |
| import org.apache.storm.utils.TupleUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Basic bolt implementation for storing timeseries datapoints to OpenTSDB. |
| * <p/> |
| * List of {@link OpenTsdbMetricDatapoint} is generated for each tuple with the configured {@code tupleOpenTsdbDatapointMappers}. |
| * All these datapoints are batched till the given {@code batchSize} or {@code flushIntervalInSeconds} is reached. |
| * <p/> |
| * |
| * <p>Example topology: |
| * <blockquote><pre> |
| * OpenTsdbClient.Builder builder = OpenTsdbClient.newBuilder(openTsdbUrl).sync(30_000).returnDetails(); |
| * final OpenTsdbBolt openTsdbBolt = new OpenTsdbBolt(builder, Collections.singletonList(TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER)); |
| * openTsdbBolt.withBatchSize(10).withFlushInterval(2).failTupleForFailedMetrics(); |
| * topologyBuilder.setBolt("opentsdb", openTsdbBolt).shuffleGrouping("metric-gen"); |
| * </pre></blockquote> |
| * |
| */ |
| public class OpenTsdbBolt extends BaseRichBolt { |
| private static final Logger LOG = LoggerFactory.getLogger(OpenTsdbBolt.class); |
| |
| private final OpenTsdbClient.Builder openTsdbClientBuilder; |
| private final List<? extends ITupleOpenTsdbDatapointMapper> tupleOpenTsdbDatapointMappers; |
| private int batchSize; |
| private int flushIntervalInSeconds; |
| private boolean failTupleForFailedMetrics; |
| |
| private BatchHelper batchHelper; |
| private OpenTsdbClient openTsdbClient; |
| private Map<OpenTsdbMetricDatapoint, Tuple> metricPointsWithTuple = new HashMap<>(); |
| private OutputCollector collector; |
| |
| public OpenTsdbBolt(OpenTsdbClient.Builder openTsdbClientBuilder, |
| ITupleOpenTsdbDatapointMapper tupleOpenTsdbDatapointMapper) { |
| this.openTsdbClientBuilder = openTsdbClientBuilder; |
| this.tupleOpenTsdbDatapointMappers = Collections.singletonList(tupleOpenTsdbDatapointMapper); |
| } |
| |
| public OpenTsdbBolt(OpenTsdbClient.Builder openTsdbClientBuilder, |
| List<? extends ITupleOpenTsdbDatapointMapper> tupleOpenTsdbDatapointMappers) { |
| this.openTsdbClientBuilder = openTsdbClientBuilder; |
| this.tupleOpenTsdbDatapointMappers = tupleOpenTsdbDatapointMappers; |
| } |
| |
| public OpenTsdbBolt withFlushInterval(int flushIntervalInSeconds) { |
| this.flushIntervalInSeconds = flushIntervalInSeconds; |
| return this; |
| } |
| |
| public OpenTsdbBolt withBatchSize(int batchSize) { |
| this.batchSize = batchSize; |
| return this; |
| } |
| |
| /** |
| * When it is invoked, this bolt acks only the tuples which have successful metrics stored into OpenTSDB and fails |
| * the respective tuples of the failed metrics. |
| * |
| * @return same instance by setting {@code failTupleForFailedMetrics} to true |
| */ |
| public OpenTsdbBolt failTupleForFailedMetrics() { |
| this.failTupleForFailedMetrics = true; |
| return this; |
| } |
| |
| @Override |
| public void prepare(Map<String, Object> topoConf, TopologyContext context, OutputCollector collector) { |
| this.collector = collector; |
| batchHelper = new BatchHelper(batchSize, collector); |
| openTsdbClient = openTsdbClientBuilder.build(); |
| } |
| |
| @Override |
| public void execute(Tuple tuple) { |
| try { |
| if (batchHelper.shouldHandle(tuple)) { |
| final List<OpenTsdbMetricDatapoint> metricDataPoints = getMetricPoints(tuple); |
| for (OpenTsdbMetricDatapoint metricDataPoint : metricDataPoints) { |
| metricPointsWithTuple.put(metricDataPoint, tuple); |
| } |
| batchHelper.addBatch(tuple); |
| } |
| |
| if (batchHelper.shouldFlush()) { |
| LOG.debug("Sending metrics of size [{}]", metricPointsWithTuple.size()); |
| |
| ClientResponse.Details clientResponse = openTsdbClient.writeMetricPoints(metricPointsWithTuple.keySet()); |
| |
| if (failTupleForFailedMetrics && clientResponse != null && clientResponse.getFailed() > 0) { |
| final List<ClientResponse.Details.Error> errors = clientResponse.getErrors(); |
| LOG.error("Some of the metric points failed with errors: [{}]", clientResponse); |
| if (errors != null && !errors.isEmpty()) { |
| |
| Set<Tuple> failedTuples = new HashSet<>(); |
| for (ClientResponse.Details.Error error : errors) { |
| final Tuple failedTuple = metricPointsWithTuple.get(error.getDatapoint()); |
| if (failedTuple != null) { |
| failedTuples.add(failedTuple); |
| } |
| } |
| |
| for (Tuple batchedTuple : batchHelper.getBatchTuples()) { |
| if (failedTuples.contains(batchedTuple)) { |
| collector.fail(batchedTuple); |
| } else { |
| collector.ack(batchedTuple); |
| } |
| } |
| |
| } else { |
| throw new RuntimeException("Some of the metric points failed with details: " + errors); |
| } |
| } else { |
| LOG.debug("Acknowledging batched tuples"); |
| batchHelper.ack(); |
| } |
| metricPointsWithTuple.clear(); |
| } |
| } catch (Exception e) { |
| batchHelper.fail(e); |
| metricPointsWithTuple.clear(); |
| } |
| } |
| |
| private List<OpenTsdbMetricDatapoint> getMetricPoints(Tuple tuple) { |
| List<OpenTsdbMetricDatapoint> metricDataPoints = new ArrayList<>(); |
| for (ITupleOpenTsdbDatapointMapper tupleOpenTsdbDatapointMapper : tupleOpenTsdbDatapointMappers) { |
| metricDataPoints.add(tupleOpenTsdbDatapointMapper.getMetricPoint(tuple)); |
| } |
| |
| return metricDataPoints; |
| } |
| |
| @Override |
| public void cleanup() { |
| openTsdbClient.cleanup(); |
| } |
| |
| @Override |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| // this is a sink and no result to emit. |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| return TupleUtils.putTickFrequencyIntoComponentConfig(super.getComponentConfiguration(), flushIntervalInSeconds); |
| } |
| } |