131 lines
4.3 KiB
Java
131 lines
4.3 KiB
Java
/*
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* Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hpcloud.mon.infrastructure.persistence;
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import com.google.inject.Inject;
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import com.hpcloud.mon.MonApiConfiguration;
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import com.hpcloud.mon.domain.model.statistic.StatisticRepository;
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import com.hpcloud.mon.domain.model.statistic.Statistics;
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import org.influxdb.InfluxDB;
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import org.influxdb.InfluxDBFactory;
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import org.influxdb.dto.Serie;
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import org.joda.time.DateTime;
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import org.joda.time.format.DateTimeFormatter;
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import org.joda.time.format.ISODateTimeFormat;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.annotation.Nullable;
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import java.util.ArrayList;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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public class StatisticInfluxDBRepositoryImpl implements StatisticRepository {
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private static final Logger logger = LoggerFactory.getLogger(StatisticInfluxDBRepositoryImpl
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.class);
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private final MonApiConfiguration config;
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private final InfluxDB influxDB;
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public static final DateTimeFormatter DATETIME_FORMATTER = ISODateTimeFormat.dateTimeNoMillis();
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@Inject
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public StatisticInfluxDBRepositoryImpl(MonApiConfiguration config) {
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this.config = config;
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this.influxDB = InfluxDBFactory.connect(this.config.influxDB.getUrl(),
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this.config.influxDB.getUser(), this.config.influxDB.getPassword());
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}
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@Override
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public List<Statistics> find(String tenantId, String name, Map<String, String> dimensions,
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DateTime startTime, @Nullable DateTime endTime,
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List<String> statistics, int period) throws Exception {
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String statsPart = buildStatsPart(statistics);
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String timePart = Utils.WhereClauseBuilder.buildTimePart(startTime, endTime);
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String dimsPart = Utils.WhereClauseBuilder.buildDimsPart(dimensions);
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String periodPart = buildPeriodPart(period);
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String query = String.format("select time %1$s from %2$s where tenant_id = '%3$s' %4$s %5$s " +
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"%6$s", statsPart, Utils.SQLSanitizer.sanitize(name), Utils.SQLSanitizer.sanitize
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(tenantId), timePart, dimsPart, periodPart);
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logger.debug("Query string: {}", query);
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List<Serie> result = this.influxDB.Query(this.config.influxDB.getName(), query,
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TimeUnit.MILLISECONDS);
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List<Statistics> statisticsList = new LinkedList<Statistics>();
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// Should only be one serie -- name.
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for (Serie serie : result) {
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Statistics stat = new Statistics();
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stat.setName(serie.getName());
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List<String> colNamesList = new LinkedList<>(statistics);
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colNamesList.add(0, "timestamp");
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stat.setColumns(colNamesList);
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stat.setDimensions(dimensions);
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List<List<Object>> valObjArryArry = new LinkedList<List<Object>>();
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stat.setStatistics(valObjArryArry);
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Object[][] pointsArryArry = serie.getPoints();
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for (int i = 0; i < pointsArryArry.length; i++) {
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List<Object> valObjArry = new ArrayList<>();
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// First column is always time.
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valObjArry.add(DATETIME_FORMATTER.print((long) pointsArryArry[i][0]));
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for (int j = 1; j < statistics.size() + 1; j++) {
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valObjArry.add(pointsArryArry[i][j]);
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}
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valObjArryArry.add(valObjArry);
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}
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statisticsList.add(stat);
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}
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return statisticsList;
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}
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private String buildPeriodPart(int period) {
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String s = "";
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if (period >= 1) {
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s += String.format("group by time(%1$ds)", period);
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}
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return s;
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}
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private String buildStatsPart(List<String> statistics) {
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String s = "";
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for (String statistic : statistics) {
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s += ",";
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if (statistic.trim().toLowerCase().equals("avg")) {
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s += " mean(value)";
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} else {
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s += " " + statistic + "(value)";
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}
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}
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return s;
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}
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}
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