| /** |
| * 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.upgrade.core; |
| |
| import org.apache.ambari.metrics.core.timeline.PhoenixHBaseAccessor; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.util.Set; |
| |
| public abstract class AbstractPhoenixMetricsCopier implements Runnable { |
| private static final Log LOG = LogFactory.getLog(AbstractPhoenixMetricsCopier.class); |
| private static final Long DEFAULT_NATIVE_TIME_RANGE_DELAY = 120000L; |
| private final Long startTime; |
| protected final FileWriter processedMetricsFile; |
| protected String inputTable; |
| protected String outputTable; |
| protected Set<String> metricNames; |
| protected PhoenixHBaseAccessor hBaseAccessor; |
| |
| public AbstractPhoenixMetricsCopier(String inputTableName, String outputTableName, PhoenixHBaseAccessor hBaseAccessor, |
| Set<String> metricNames, Long startTime, FileWriter outputStream) { |
| this.inputTable = inputTableName; |
| this.outputTable = outputTableName; |
| this.hBaseAccessor = hBaseAccessor; |
| this.metricNames = metricNames; |
| this.startTime = startTime; |
| this.processedMetricsFile = outputStream; |
| } |
| |
| public void run(){ |
| LOG.info(String.format("Copying %s metrics from %s to %s", metricNames, inputTable, outputTable)); |
| long startTimer = System.currentTimeMillis(); |
| String query = String.format("SELECT %s %s FROM %s WHERE %s AND SERVER_TIME > %s ORDER BY METRIC_NAME, SERVER_TIME", |
| getQueryHint(startTime), getColumnsClause(), inputTable, getMetricNamesLikeClause(), startTime); |
| |
| runPhoenixQueryAndAddToResults(query); |
| |
| try { |
| saveMetrics(); |
| } catch (SQLException e) { |
| LOG.error(e); |
| } |
| long estimatedTime = System.currentTimeMillis() - startTimer; |
| LOG.debug(String.format("Copying took %s seconds from table %s to table %s for metric names %s", estimatedTime/ 1000.0, inputTable, outputTable, metricNames)); |
| |
| saveMetricsProgress(); |
| } |
| |
| private String getMetricNamesLikeClause() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append('('); |
| int i = 0; |
| for (String metricName : metricNames) { |
| sb.append("METRIC_NAME"); |
| sb.append(" LIKE "); |
| sb.append("'"); |
| sb.append(metricName); |
| sb.append("'"); |
| |
| if (i < metricNames.size() - 1) { |
| sb.append(" OR "); |
| } |
| i++; |
| } |
| |
| sb.append(')'); |
| return sb.toString(); |
| } |
| |
| protected abstract String getColumnsClause(); |
| |
| private void runPhoenixQueryAndAddToResults(String query) { |
| LOG.debug(String.format("Running query: %s", query)); |
| Connection conn = null; |
| PreparedStatement stmt = null; |
| try { |
| conn = hBaseAccessor.getConnection(); |
| stmt = conn.prepareStatement(query); |
| ResultSet rs = stmt.executeQuery(); |
| while (rs.next()) { |
| addToResults(rs); |
| } |
| } catch (SQLException e) { |
| LOG.error(String.format("Exception during running phoenix query %s", query), e); |
| } finally { |
| if (stmt != null) { |
| try { |
| stmt.close(); |
| } catch (SQLException e) { |
| // Ignore |
| } |
| } |
| if (conn != null) { |
| try { |
| conn.close(); |
| } catch (SQLException e) { |
| // Ignore |
| } |
| } |
| } |
| } |
| |
| /** |
| * Saves processed metric names info provided file in format TABLE_NAME:METRIC_NAME |
| */ |
| private void saveMetricsProgress() { |
| if (processedMetricsFile == null) { |
| LOG.info("Skipping metrics progress save as the file is null"); |
| return; |
| } |
| for (String metricName : metricNames) { |
| try { |
| processedMetricsFile.append(inputTable + ":" + metricName + System.lineSeparator()); |
| } catch (IOException e) { |
| LOG.error(e); |
| } |
| } |
| } |
| |
| protected String getQueryHint(Long startTime) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("/*+ "); |
| sb.append("NATIVE_TIME_RANGE("); |
| sb.append(startTime - DEFAULT_NATIVE_TIME_RANGE_DELAY); |
| sb.append(") "); |
| sb.append("*/"); |
| return sb.toString(); |
| } |
| |
| /** |
| * Saves aggregated metrics to the Hbase |
| * @throws SQLException |
| */ |
| protected abstract void saveMetrics() throws SQLException; |
| |
| /** |
| * Parses result set into aggregates map |
| * @param rs |
| * @throws SQLException |
| */ |
| protected abstract void addToResults(ResultSet rs) throws SQLException; |
| } |