/*
* Copyright 2014 Rackspace
*
* Licensed 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 com.rackspacecloud.blueflood.ManualRollupTool.io;
import com.codahale.metrics.*;
import com.codahale.metrics.Timer;
import com.google.common.base.Function;
import com.netflix.astyanax.model.Column;
import com.netflix.astyanax.model.ColumnList;
import com.netflix.astyanax.model.Row;
import com.netflix.astyanax.recipes.reader.AllRowsReader;
import com.rackspacecloud.blueflood.ManualRollupTool.io.handlers.ReRollWork;
import com.rackspacecloud.blueflood.ManualRollupTool.service.RollupToolConfig;
import com.rackspacecloud.blueflood.concurrent.ThreadPoolBuilder;
import com.rackspacecloud.blueflood.io.astyanax.AstyanaxIO;
import com.rackspacecloud.blueflood.io.CassandraModel;
import com.rackspacecloud.blueflood.io.CassandraModel.MetricColumnFamily;
import com.rackspacecloud.blueflood.rollup.Granularity;
import com.rackspacecloud.blueflood.service.*;
import com.rackspacecloud.blueflood.types.*;
import com.rackspacecloud.blueflood.utils.Metrics;
import com.rackspacecloud.blueflood.utils.Util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.*;
import java.util.concurrent.*;
public class ManualRollup extends AstyanaxIO {
private static final Meter nullRows = Metrics.meter(ManualRollup.class, "Null Rows Found");
private static final Timer rerollTimerPerShard = Metrics.timer(ManualRollup.class, "Time taken to rollup per shard");
private static final Set<MetricColumnFamily> columnFamiliesEnabled = new HashSet<MetricColumnFamily>();
private final ThreadPoolExecutor rollupExecutors = new ThreadPoolBuilder()
.withUnboundedQueue()
.withCorePoolSize(Configuration.getInstance().getIntegerProperty(RollupToolConfig.MAX_REROLL_THREADS))
.withMaxPoolSize(Configuration.getInstance().getIntegerProperty(RollupToolConfig.MAX_REROLL_THREADS))
.withName("ReRollup ThreadPool")
.build();
private static final Logger log = LoggerFactory.getLogger(ManualRollup.class);
private static final long START_MILLIS = Configuration.getInstance().getLongProperty(RollupToolConfig.START_MILLIS);
private static final long STOP_MILLIS = Configuration.getInstance().getLongProperty(RollupToolConfig.STOP_MILLIS);
private static final Collection<Integer> shardsToManuallyRollup = Collections.unmodifiableCollection(
Util.parseShards(Configuration.getInstance().getStringProperty(RollupToolConfig.SHARDS_TO_MANUALLY_ROLLUP)));
static {
if (Configuration.getInstance().getBooleanProperty(RollupToolConfig.METRICS_5M_ENABLED)) { columnFamiliesEnabled.add(CassandraModel.CF_METRICS_5M); }
if (Configuration.getInstance().getBooleanProperty(RollupToolConfig.METRICS_20M_ENABLED)) { columnFamiliesEnabled.add(CassandraModel.CF_METRICS_20M); }
if (Configuration.getInstance().getBooleanProperty(RollupToolConfig.METRICS_60M_ENABLED)) { columnFamiliesEnabled.add(CassandraModel.CF_METRICS_60M); }
if (Configuration.getInstance().getBooleanProperty(RollupToolConfig.METRICS_240M_ENABLED)) { columnFamiliesEnabled.add(CassandraModel.CF_METRICS_240M); }
if (Configuration.getInstance().getBooleanProperty(RollupToolConfig.METRICS_1440M_ENABLED)) { columnFamiliesEnabled.add(CassandraModel.CF_METRICS_1440M); }
}
public void startManualRollup() {
System.out.println("Logging all (" + columnFamiliesEnabled.size() + ") columnfamilies that we will manually rollup FROM: " + START_MILLIS + "\tTO:" + STOP_MILLIS);
log.info("Logging all (" + columnFamiliesEnabled.size() + ") columnfamilies that we will manually rollup FROM: " + START_MILLIS + "\tTO:" + STOP_MILLIS);
for (MetricColumnFamily columnFamily : columnFamiliesEnabled) {
log.info("\t~\tWILL manually rollup " + columnFamily.getName());
}
for (MetricColumnFamily columnFamily : columnFamiliesEnabled) {
log.info("\t~\t~\tSTARTING to manually rollup " + columnFamily.getName());
rollupCf(columnFamily);
log.info("\t~\t~\tFinished rolling up " + columnFamily.getName());
}
log.info("\t~\tCompleted");
}
private void rollupCf(final MetricColumnFamily columnFamily) {
final Granularity gran = Granularity.fromString(columnFamily.getName());
Function<Row<Long, Locator>, Boolean> rowFunction = new Function<Row<Long, Locator>, Boolean>() {
@Override
public Boolean apply(Row<Long, Locator> row) {
if (!shardsToManuallyRollup.contains(row.getKey().intValue())) {
log.info("\t~\t~\tSkipping shard " + row.getKey());
return true;
}
Timer.Context rerollContext = rerollTimerPerShard.time();
if (row == null) {
log.warn("Found a null row");
nullRows.mark();
return true;
}
log.info("\t~\t~\tReRolling up for shard " + row.getKey());
ColumnList<Locator> columns = row.getColumns();
ArrayList<ReRollWork> work = new ArrayList<ReRollWork>();
for (Column<Locator> column : columns) {
Locator locator = column.getName();
work.add(new ReRollWork(locator, gran, new Range(START_MILLIS, STOP_MILLIS)));
}
List<Future<Boolean>> retList = null;
try {
retList = rollupExecutors.invokeAll(work);
} catch (InterruptedException e) {}
boolean notDone = true;
//We need to do this dance, because 1)We need to stop whenever an exception has encountered 2)Just keep on adding tasks to the work queue and blowing the stack. this will essentially block per shard
while (notDone) {
int doneCount = 0;
for(Future<Boolean> myFut : retList) {
if(myFut.isDone()) {
doneCount++;
}
}
if(doneCount == retList.size())
notDone = false;
}
try {
for (Future<Boolean> retFut : retList) {
//Calling get will throw any suppressed exception from ReRoll Work
retFut.get();
}
} catch (Exception e) {
log.error("Fatal exception while re-rolling data", e);
throw new RuntimeException();
} finally {
rerollContext.stop();
}
return true;
}
};
try {
//Get all the locators per shard one by one
boolean result = new AllRowsReader.Builder<Long, Locator>(getKeyspace(), CassandraModel.CF_METRICS_LOCATOR)
.withPageSize(1) //Wide rows
.withConcurrencyLevel(1)
.forEachRow(rowFunction)
.withPartitioner(null)
.build()
.call();
} catch (Exception e) {
log.error("Fatal error in AllRowsReader", e);
throw new RuntimeException(e);
} finally {
rollupExecutors.shutdown();
}
}
}