| /* |
| * 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.jackrabbit.oak.plugins.document.mongo; |
| |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.mongodb.BasicDBObject; |
| import com.mongodb.MongoException; |
| import com.mongodb.client.MongoDatabase; |
| |
| import org.apache.jackrabbit.oak.plugins.document.Collection; |
| import org.apache.jackrabbit.oak.plugins.document.Document; |
| import org.apache.jackrabbit.oak.stats.CounterStats; |
| import org.apache.jackrabbit.oak.stats.StatisticsProvider; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.jackrabbit.oak.stats.StatsOptions.METRICS_ONLY; |
| |
| /** |
| * Implementation specific metrics exposed by the {@link MongoDocumentStore}. |
| */ |
| public final class MongoDocumentStoreMetrics implements Runnable { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MongoDocumentStoreMetrics.class); |
| |
| private static final ImmutableList<Collection<? extends Document>> COLLECTIONS = ImmutableList.of( |
| Collection.NODES, Collection.JOURNAL, Collection.CLUSTER_NODES, Collection.SETTINGS, Collection.BLOBS |
| ); |
| |
| private final MongoDatabase db; |
| |
| private final StatisticsProvider statsProvider; |
| |
| public MongoDocumentStoreMetrics(MongoDocumentStore store, |
| StatisticsProvider statsProvider) { |
| this.db = store.getDatabase(); |
| this.statsProvider = statsProvider; |
| } |
| |
| //-----------------------< Runnable >--------------------------------------- |
| |
| @Override |
| public void run() { |
| updateCounters(); |
| } |
| |
| //-----------------------< internal >--------------------------------------- |
| |
| private void updateCounters() { |
| LOG.debug("Updating counters"); |
| try { |
| Set<String> collectionNames = new TreeSet<>(); |
| db.listCollectionNames().into(collectionNames); |
| for (Collection<? extends Document> c : COLLECTIONS) { |
| if (!collectionNames.contains(c.toString())) { |
| LOG.debug("Collection {} does not exist", c); |
| continue; |
| } |
| CollectionStats stats = getStats(c); |
| updateCounter(getCounter(c, "count"), stats.count); |
| updateCounter(getCounter(c, "size"), stats.size); |
| updateCounter(getCounter(c, "storageSize"), stats.storageSize); |
| updateCounter(getCounter(c, "totalIndexSize"), stats.totalIndexSize); |
| } |
| DatabaseStats dbStats = getDBStats(); |
| updateCounter(getDBCounter("fsUsedSize"), dbStats.fsUsedSize); |
| updateCounter(getDBCounter("fsTotalSize"), dbStats.fsTotalSize); |
| } catch (MongoException e) { |
| LOG.warn("Updating counters failed: {}", e.toString()); |
| } |
| } |
| |
| private void updateCounter(CounterStats counter, long value) { |
| counter.inc(value - counter.getCount()); |
| } |
| |
| private CollectionStats getStats(Collection<? extends Document> c) |
| throws MongoException { |
| CollectionStats stats = new CollectionStats(); |
| BasicDBObject result = new BasicDBObject(db.runCommand(new org.bson.Document("collStats", c.toString()))); |
| stats.count = result.getLong("count", 0); |
| stats.size = result.getLong("size", 0); |
| stats.storageSize = result.getLong("storageSize", 0); |
| stats.totalIndexSize = result.getLong("totalIndexSize", 0); |
| return stats; |
| } |
| |
| private DatabaseStats getDBStats() throws MongoException { |
| DatabaseStats stats = new DatabaseStats(); |
| BasicDBObject result = new BasicDBObject(db.runCommand(new org.bson.Document("dbStats", 1))); |
| stats.fsUsedSize = result.getLong("fsUsedSize", 0); |
| stats.fsTotalSize = result.getLong("fsTotalSize", 0); |
| return stats; |
| } |
| |
| private CounterStats getCounter(Collection<? extends Document> c, |
| String name) { |
| String counterName = "MongoDB." + c.toString() + "." + name; |
| return statsProvider.getCounterStats(counterName, METRICS_ONLY); |
| } |
| |
| private CounterStats getDBCounter(String name) { |
| String counterName = "MongoDB." + name; |
| return statsProvider.getCounterStats(counterName, METRICS_ONLY); |
| } |
| |
| private static final class CollectionStats { |
| long count; |
| long size; |
| long storageSize; |
| long totalIndexSize; |
| } |
| |
| private static final class DatabaseStats { |
| long fsUsedSize; |
| long fsTotalSize; |
| } |
| } |