| /* |
| * 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.hugegraph.backend.store.rocksdb; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.hugegraph.backend.store.BackendMetrics; |
| import org.apache.hugegraph.util.Bytes; |
| import org.apache.hugegraph.util.InsertionOrderUtil; |
| import org.apache.hugegraph.util.UnitUtil; |
| import com.google.common.collect.ImmutableMap; |
| |
| public class RocksDBMetrics implements BackendMetrics { |
| |
| // https://github.com/facebook/rocksdb/blob/master/include/rocksdb/db.h#L722 |
| private static final String PREFIX = "rocksdb."; |
| |
| // memory |
| private static final String BLOCK_CACHE = PREFIX + |
| "block-cache-usage"; |
| private static final String BLOCK_CACHE_PINNED = PREFIX + |
| "block-cache-pinned-usage"; |
| private static final String BLOCK_CACHE_CAPACITY = PREFIX + |
| "block-cache-capacity"; |
| private static final String INDEX_FILTER = PREFIX + |
| "estimate-table-readers-mem"; |
| private static final String ALL_MEM_TABLE = PREFIX + |
| "size-all-mem-tables"; |
| private static final String CUR_MEM_TABLE = PREFIX + |
| "cur-size-all-mem-tables"; |
| // disk |
| private static final String DISK_USAGE = PREFIX + |
| "disk-usage"; |
| private static final String LIVE_DATA_SIZE = PREFIX + |
| "estimate-live-data-size"; |
| private static final String SST_FILE_SIZE = PREFIX + |
| "total-sst-files-size"; |
| private static final String LIVE_SST_FILE_SIZE = PREFIX + |
| "live-sst-files-size"; |
| private static final String PENDING_COMPACTION_BYTES = PREFIX + |
| "estimate-pending-compaction-bytes"; |
| |
| // count/number |
| private static final String NUM_KEYS = PREFIX + |
| "estimate-num-keys"; |
| private static final String NUM_KEYS_MEM_TABLE = PREFIX + |
| "num-entries-active-mem-table"; |
| private static final String NUM_KEYS_IMM_MEM_TABLE = PREFIX + |
| "num-entries-imm-mem-tables"; |
| private static final String NUM_DELETES_MEM_TABLE = PREFIX + |
| "num-deletes-active-mem-table"; |
| private static final String NUM_DELETES_IMM_MEM_TABLE = PREFIX + |
| "num-deletes-imm-mem-tables"; |
| |
| private static final String RUNNING_FLUSHS = PREFIX + |
| "num-running-flushes"; |
| private static final String MEM_TABLE_FLUSH_PENDINF = PREFIX + |
| "mem-table-flush-pending"; |
| private static final String RUNNING_COMPACTIONS = PREFIX + |
| "num-running-compactions"; |
| private static final String COMPACTION_PENDINF = PREFIX + |
| "compaction-pending"; |
| |
| private static final String NUM_IMM_MEM_TABLE = PREFIX + |
| "num-immutable-mem-table"; |
| private static final String NUM_SNAPSHOTS = PREFIX + |
| "num-snapshots"; |
| private static final String OLDEST_SNAPSHOT_TIME = PREFIX + |
| "oldest-snapshot-time"; |
| private static final String NUM_LIVE_VERSIONS = PREFIX + |
| "num-live-versions"; |
| private static final String SUPER_VERSION = PREFIX + |
| "current-super-version-number"; |
| |
| public static final String KEY_DISK_USAGE = DISK_USAGE; |
| public static final String KEY_NUM_KEYS = NUM_KEYS; |
| |
| private final List<RocksDBSessions> dbs; |
| private final RocksDBSessions.Session session; |
| |
| public RocksDBMetrics(List<RocksDBSessions> dbs, |
| RocksDBSessions.Session session) { |
| this.dbs = dbs; |
| this.session = session; |
| } |
| |
| @Override |
| public Map<String, Object> metrics() { |
| Map<String, Object> results = InsertionOrderUtil.newMap(); |
| results.put(NODES, 1); |
| results.put(CLUSTER_ID, SERVER_LOCAL); |
| try { |
| Map<String, Object> metrics = metricsInfo(); |
| results.put(SERVERS, ImmutableMap.of(SERVER_LOCAL, metrics)); |
| } catch (Throwable e) { |
| results.put(EXCEPTION, e.toString()); |
| } |
| return results; |
| } |
| |
| private Map<String, Object> metricsInfo() { |
| Map<String, Object> metrics = InsertionOrderUtil.newMap(); |
| metrics.put(BackendMetrics.MEM_UNIT, "MB"); |
| metrics.put(BackendMetrics.DISK_UNIT, "GB"); |
| |
| // NOTE: the unit of rocksdb memory property is bytes |
| long memUsed = (long) this.getMemUsed(); |
| metrics.put(BackendMetrics.MEM_USED, UnitUtil.bytesToMB(memUsed)); |
| metrics.put(BackendMetrics.MEM_USED + BackendMetrics.READABLE, |
| UnitUtil.bytesToReadableString(memUsed)); |
| |
| long diskUsage = (long) this.getDiskUsage(); |
| metrics.put(BackendMetrics.DISK_USAGE, UnitUtil.bytesToMB(diskUsage)); |
| metrics.put(BackendMetrics.DISK_USAGE + BackendMetrics.READABLE, |
| UnitUtil.bytesToReadableString(diskUsage)); |
| |
| // memory |
| this.appendMetricsMemory(metrics, BLOCK_CACHE); |
| this.appendMetricsMemory(metrics, BLOCK_CACHE_PINNED); |
| this.appendMetricsMemory(metrics, BLOCK_CACHE_CAPACITY); |
| this.appendMetricsMemory(metrics, INDEX_FILTER); |
| this.appendMetricsMemory(metrics, ALL_MEM_TABLE); |
| this.appendMetricsMemory(metrics, CUR_MEM_TABLE); |
| |
| // disk |
| this.appendMetricsDisk(metrics, LIVE_DATA_SIZE); |
| this.appendMetricsDisk(metrics, SST_FILE_SIZE); |
| this.appendMetricsDisk(metrics, LIVE_SST_FILE_SIZE); |
| this.appendMetricsDisk(metrics, PENDING_COMPACTION_BYTES); |
| |
| // count/number |
| this.appendMetricsNumber(metrics, NUM_KEYS); |
| this.appendMetricsNumber(metrics, NUM_KEYS_MEM_TABLE); |
| this.appendMetricsNumber(metrics, NUM_KEYS_IMM_MEM_TABLE); |
| this.appendMetricsNumber(metrics, NUM_DELETES_MEM_TABLE); |
| this.appendMetricsNumber(metrics, NUM_DELETES_IMM_MEM_TABLE); |
| this.appendMetricsNumber(metrics, RUNNING_FLUSHS); |
| this.appendMetricsNumber(metrics, MEM_TABLE_FLUSH_PENDINF); |
| this.appendMetricsNumber(metrics, RUNNING_COMPACTIONS); |
| this.appendMetricsNumber(metrics, COMPACTION_PENDINF); |
| this.appendMetricsNumber(metrics, NUM_IMM_MEM_TABLE); |
| this.appendMetricsNumber(metrics, NUM_SNAPSHOTS); |
| this.appendMetricsNumber(metrics, OLDEST_SNAPSHOT_TIME); |
| this.appendMetricsNumber(metrics, NUM_LIVE_VERSIONS); |
| this.appendMetricsNumber(metrics, SUPER_VERSION); |
| |
| return metrics; |
| } |
| |
| private void appendMetricsMemory(Map<String, Object> metrics, String key) { |
| metrics.put(name(key), this.sum(this.session, key) / Bytes.MB); |
| } |
| |
| private void appendMetricsDisk(Map<String, Object> metrics, String key) { |
| metrics.put(name(key), this.sum(this.session, key) / Bytes.GB); |
| } |
| |
| private void appendMetricsNumber(Map<String, Object> metrics, String key) { |
| metrics.put(name(key), (long) this.sum(this.session, key)); |
| } |
| |
| private String name(String key) { |
| return key.replace(PREFIX, "").replace("-", "_"); |
| } |
| |
| private double getMemUsed() { |
| // https://github.com/facebook/rocksdb/wiki/Memory-usage-in-RocksDB |
| double blockCache = this.sum(this.session, BLOCK_CACHE); |
| double indexFilter = this.sum(this.session, INDEX_FILTER); |
| double memtable = this.sum(this.session, ALL_MEM_TABLE); |
| double blockCachePinned = this.sum(this.session, BLOCK_CACHE_PINNED); |
| return blockCache + indexFilter + memtable + blockCachePinned; |
| } |
| |
| private double getDiskUsage() { |
| return this.sum(DISK_USAGE); |
| } |
| |
| private double sum(RocksDBSessions.Session session, String property) { |
| double total = 0; |
| for (RocksDBSessions db : this.dbs) { |
| List<String> cfValues = db.property(property); |
| for (String value : cfValues) { |
| total += Double.parseDouble(value); |
| } |
| for (String table : db.openedTables()) { |
| total += Double.parseDouble(session.property(table, property)); |
| } |
| } |
| return total; |
| } |
| |
| private double sum(String property) { |
| double total = 0; |
| for (RocksDBSessions db : this.dbs) { |
| List<String> cfValues = db.property(property); |
| for (String value : cfValues) { |
| total += Double.parseDouble(value); |
| } |
| } |
| return total; |
| } |
| |
| public Map<String, Object> compact() { |
| Map<String, Object> results = InsertionOrderUtil.newMap(); |
| results.put(NODES, 1); |
| results.put(CLUSTER_ID, SERVER_LOCAL); |
| |
| try { |
| for (RocksDBSessions db : this.dbs) { |
| // NOTE: maybe cost long time |
| db.compactRange(); |
| } |
| results.put(SERVERS, ImmutableMap.of(SERVER_LOCAL, "OK")); |
| } catch (Throwable e) { |
| results.put(EXCEPTION, e.toString()); |
| } |
| |
| return results; |
| } |
| } |