org.graylog2.indexer.ranges.EsIndexRangeService Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.indexer.ranges;
import com.codahale.metrics.MetricRegistry;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.eventbus.AllowConcurrentEvents;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.google.common.util.concurrent.UncheckedExecutionException;
import org.elasticsearch.action.NoShardAvailableActionException;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.index.IndexNotFoundException;
import org.graylog2.database.NotFoundException;
import org.graylog2.indexer.Deflector;
import org.graylog2.indexer.esplugin.IndicesDeletedEvent;
import org.graylog2.metrics.CacheStatsSet;
import org.graylog2.shared.metrics.MetricUtils;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.inject.Singleton;
import java.util.Map;
import java.util.SortedSet;
import java.util.concurrent.ExecutionException;
import static java.util.Objects.requireNonNull;
@Singleton
@Deprecated
public class EsIndexRangeService implements IndexRangeService {
private static final Logger LOG = LoggerFactory.getLogger(EsIndexRangeService.class);
private final LoadingCache cache;
private final Client client;
private final Deflector deflector;
@Inject
public EsIndexRangeService(Client client,
Deflector deflector,
EventBus eventBus,
MetricRegistry metricRegistry) {
this.client = requireNonNull(client);
this.deflector = requireNonNull(deflector);
final CacheLoader cacheLoader = new CacheLoader() {
@Override
public IndexRange load(String indexName) throws Exception {
final IndexRange indexRange = loadIndexRange(indexName);
if (indexRange == null) {
throw new NotFoundException("Couldn't load index range for index " + indexName);
}
return indexRange;
}
};
this.cache = CacheBuilder.newBuilder()
.recordStats()
.build(cacheLoader);
MetricUtils.safelyRegisterAll(metricRegistry, new CacheStatsSet(MetricRegistry.name(this.getClass(), "cache"), cache));
eventBus.register(this);
}
@Override
public IndexRange get(String index) throws NotFoundException {
try {
return cache.get(index);
} catch (ExecutionException | UncheckedExecutionException e) {
final Throwable cause = e.getCause();
if (cause instanceof NotFoundException) {
throw (NotFoundException) cause;
} else {
throw new NotFoundException(e.getCause());
}
}
}
private IndexRange loadIndexRange(String index) throws NotFoundException {
final GetRequest request = client.prepareGet(index, "index_range", index).request();
final GetResponse r;
try {
r = client.get(request).actionGet();
} catch (IndexNotFoundException | NoShardAvailableActionException e) {
throw new NotFoundException(e);
}
if (!r.isExists()) {
throw new NotFoundException("Couldn't find index range for index " + index);
}
final IndexRange indexRange = parseSource(r.getIndex(), r.getSource());
if (indexRange == null) {
throw new NotFoundException("Couldn't parse index range for index " + index);
}
return indexRange;
}
@Nullable
private IndexRange parseSource(String index, Map fields) {
try {
return EsIndexRange.create(
index,
parseFromDateString((String) fields.get(EsIndexRange.FIELD_BEGIN)),
parseFromDateString((String) fields.get(EsIndexRange.FIELD_END)),
parseFromDateString((String) fields.get(EsIndexRange.FIELD_CALCULATED_AT)),
(int) fields.get(EsIndexRange.FIELD_TOOK_MS)
);
} catch (Exception e) {
LOG.debug("Couldn't create index range from fields: " + fields);
return null;
}
}
private DateTime parseFromDateString(String s) {
return DateTime.parse(s);
}
@Override
public SortedSet find(DateTime begin, DateTime end) {
final ImmutableSortedSet.Builder indexRanges = ImmutableSortedSet.orderedBy(IndexRange.COMPARATOR);
for (IndexRange indexRange : findAll()) {
if (indexRange.begin().getMillis() <= end.getMillis() && indexRange.end().getMillis() >= begin.getMillis()) {
indexRanges.add(indexRange);
}
}
return indexRanges.build();
}
@Override
public SortedSet findAll() {
final ImmutableSortedSet.Builder indexRanges = ImmutableSortedSet.orderedBy(IndexRange.COMPARATOR);
for (String index : deflector.getAllGraylogIndexNames()) {
try {
indexRanges.add(cache.get(index));
} catch (ExecutionException e) {
final Throwable cause = e.getCause();
if (cause instanceof NotFoundException) {
LOG.debug("Couldn't find index range for index " + index);
} else {
LOG.warn("Couldn't load index range for index " + index, cause);
}
}
}
return indexRanges.build();
}
@Override
public IndexRange calculateRange(String index) {
throw new UnsupportedOperationException();
}
@Override
public IndexRange createUnknownRange(String index) {
throw new UnsupportedOperationException();
}
@Override
public void save(IndexRange indexRange) {
throw new UnsupportedOperationException();
}
@Subscribe
@AllowConcurrentEvents
public void handleIndexDeletion(IndicesDeletedEvent event) {
for (String index : event.indices()) {
cache.invalidate(index);
}
cache.cleanUp();
}
}