| /** |
| * 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.ambari.metrics.core.timeline.aggregators; |
| |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| |
| import static org.apache.ambari.metrics.core.timeline.query.PhoenixTransactSQL.EVENT_DOWNSAMPLER_CLUSTER_METRIC_SELECT_SQL; |
| import static org.apache.ambari.metrics.core.timeline.query.PhoenixTransactSQL.EVENT_DOWNSAMPLER_HOST_METRIC_SELECT_SQL; |
| import static org.apache.ambari.metrics.core.timeline.query.PhoenixTransactSQL.METRICS_CLUSTER_AGGREGATE_TABLE_NAME; |
| |
| public class EventMetricDownSampler implements CustomDownSampler{ |
| |
| private String metricPatterns = ""; |
| private static final Log LOG = LogFactory.getLog(EventMetricDownSampler.class); |
| |
| public static EventMetricDownSampler fromConfig(Map<String, String> conf) { |
| String metricPatterns = conf.get(DownSamplerUtils.downSamplerConfigPrefix + DownSamplerUtils.eventDownSamplerKey + "." + |
| DownSamplerUtils.downSamplerMetricPatternsConfig); |
| |
| return new EventMetricDownSampler(metricPatterns); |
| } |
| |
| public EventMetricDownSampler(String metricPatterns) { |
| this.metricPatterns = metricPatterns; |
| } |
| |
| @Override |
| public boolean validateConfigs() { |
| return true; |
| } |
| |
| @Override |
| public List<String> prepareDownSamplingStatement(Long startTime, Long endTime, String tableName) { |
| List<String> stmts = new ArrayList<>(); |
| List<String> metricPatternList = Arrays.asList(metricPatterns.split(",")); |
| |
| String aggregateColumnName = "METRIC_COUNT"; |
| |
| if (tableName.equals(METRICS_CLUSTER_AGGREGATE_TABLE_NAME)) { |
| aggregateColumnName = "HOSTS_COUNT"; |
| } |
| |
| for (String metricPattern : metricPatternList) { |
| String metricPatternClause = "'" + metricPattern + "'"; |
| if (tableName.contains("RECORD")) { |
| stmts.add(String.format(EVENT_DOWNSAMPLER_HOST_METRIC_SELECT_SQL, |
| endTime, tableName, metricPatternClause, |
| startTime, endTime)); |
| } else { |
| stmts.add(String.format(EVENT_DOWNSAMPLER_CLUSTER_METRIC_SELECT_SQL, |
| endTime, aggregateColumnName, tableName, metricPatternClause, |
| startTime, endTime)); |
| } |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Downsampling Stmt: " + stmts.toString()); |
| } |
| return stmts; |
| } |
| } |