| /* |
| * 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.cassandra.tools.nodetool; |
| |
| import io.airlift.command.Command; |
| import io.airlift.command.Option; |
| |
| import java.lang.management.MemoryUsage; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import javax.management.InstanceNotFoundException; |
| |
| import org.apache.cassandra.db.ColumnFamilyStoreMBean; |
| import org.apache.cassandra.io.util.FileUtils; |
| import org.apache.cassandra.service.CacheServiceMBean; |
| import org.apache.cassandra.tools.NodeProbe; |
| import org.apache.cassandra.tools.NodeTool.NodeToolCmd; |
| |
| @Command(name = "info", description = "Print node information (uptime, load, ...)") |
| public class Info extends NodeToolCmd |
| { |
| @Option(name = {"-T", "--tokens"}, description = "Display all tokens") |
| private boolean tokens = false; |
| |
| @Override |
| public void execute(NodeProbe probe) |
| { |
| boolean gossipInitialized = probe.isGossipRunning(); |
| |
| System.out.printf("%-23s: %s%n", "ID", probe.getLocalHostId()); |
| System.out.printf("%-23s: %s%n", "Gossip active", gossipInitialized); |
| System.out.printf("%-23s: %s%n", "Thrift active", probe.isThriftServerRunning()); |
| System.out.printf("%-23s: %s%n", "Native Transport active", probe.isNativeTransportRunning()); |
| System.out.printf("%-23s: %s%n", "Load", probe.getLoadString()); |
| if (gossipInitialized) |
| System.out.printf("%-23s: %s%n", "Generation No", probe.getCurrentGenerationNumber()); |
| else |
| System.out.printf("%-23s: %s%n", "Generation No", 0); |
| |
| // Uptime |
| long secondsUp = probe.getUptime() / 1000; |
| System.out.printf("%-23s: %d%n", "Uptime (seconds)", secondsUp); |
| |
| // Memory usage |
| MemoryUsage heapUsage = probe.getHeapMemoryUsage(); |
| double memUsed = (double) heapUsage.getUsed() / (1024 * 1024); |
| double memMax = (double) heapUsage.getMax() / (1024 * 1024); |
| System.out.printf("%-23s: %.2f / %.2f%n", "Heap Memory (MB)", memUsed, memMax); |
| try |
| { |
| System.out.printf("%-23s: %.2f%n", "Off Heap Memory (MB)", getOffHeapMemoryUsed(probe)); |
| } |
| catch (RuntimeException e) |
| { |
| // offheap-metrics introduced in 2.1.3 - older versions do not have the appropriate mbeans |
| if (!(e.getCause() instanceof InstanceNotFoundException)) |
| throw e; |
| } |
| |
| // Data Center/Rack |
| System.out.printf("%-23s: %s%n", "Data Center", probe.getDataCenter()); |
| System.out.printf("%-23s: %s%n", "Rack", probe.getRack()); |
| |
| // Exceptions |
| System.out.printf("%-23s: %s%n", "Exceptions", probe.getStorageMetric("Exceptions")); |
| |
| CacheServiceMBean cacheService = probe.getCacheServiceMBean(); |
| |
| // Key Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds |
| System.out.printf("%-23s: entries %d, size %s, capacity %s, %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n", |
| "Key Cache", |
| probe.getCacheMetric("KeyCache", "Entries"), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("KeyCache", "Size")), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("KeyCache", "Capacity")), |
| probe.getCacheMetric("KeyCache", "Hits"), |
| probe.getCacheMetric("KeyCache", "Requests"), |
| probe.getCacheMetric("KeyCache", "HitRate"), |
| cacheService.getKeyCacheSavePeriodInSeconds()); |
| |
| // Row Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds |
| System.out.printf("%-23s: entries %d, size %s, capacity %s, %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n", |
| "Row Cache", |
| probe.getCacheMetric("RowCache", "Entries"), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("RowCache", "Size")), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("RowCache", "Capacity")), |
| probe.getCacheMetric("RowCache", "Hits"), |
| probe.getCacheMetric("RowCache", "Requests"), |
| probe.getCacheMetric("RowCache", "HitRate"), |
| cacheService.getRowCacheSavePeriodInSeconds()); |
| |
| // Counter Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds |
| System.out.printf("%-23s: entries %d, size %s, capacity %s, %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n", |
| "Counter Cache", |
| probe.getCacheMetric("CounterCache", "Entries"), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("CounterCache", "Size")), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("CounterCache", "Capacity")), |
| probe.getCacheMetric("CounterCache", "Hits"), |
| probe.getCacheMetric("CounterCache", "Requests"), |
| probe.getCacheMetric("CounterCache", "HitRate"), |
| cacheService.getCounterCacheSavePeriodInSeconds()); |
| |
| // Chunk Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds |
| try |
| { |
| System.out.printf("%-23s: entries %d, size %s, capacity %s, %d misses, %d requests, %.3f recent hit rate, %.3f %s miss latency%n", |
| "Chunk Cache", |
| probe.getCacheMetric("ChunkCache", "Entries"), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("ChunkCache", "Size")), |
| FileUtils.stringifyFileSize((long) probe.getCacheMetric("ChunkCache", "Capacity")), |
| probe.getCacheMetric("ChunkCache", "Misses"), |
| probe.getCacheMetric("ChunkCache", "Requests"), |
| probe.getCacheMetric("ChunkCache", "HitRate"), |
| probe.getCacheMetric("ChunkCache", "MissLatency"), |
| probe.getCacheMetric("ChunkCache", "MissLatencyUnit")); |
| } |
| catch (RuntimeException e) |
| { |
| if (!(e.getCause() instanceof InstanceNotFoundException)) |
| throw e; |
| |
| // Chunk cache is not on. |
| } |
| |
| // Global table stats |
| System.out.printf("%-23s: %s%%%n", "Percent Repaired", probe.getColumnFamilyMetric(null, null, "PercentRepaired")); |
| |
| // check if node is already joined, before getting tokens, since it throws exception if not. |
| if (probe.isJoined()) |
| { |
| // Tokens |
| List<String> tokens = probe.getTokens(); |
| if (tokens.size() == 1 || this.tokens) |
| for (String token : tokens) |
| System.out.printf("%-23s: %s%n", "Token", token); |
| else |
| System.out.printf("%-23s: (invoke with -T/--tokens to see all %d tokens)%n", "Token", |
| tokens.size()); |
| } |
| else |
| { |
| System.out.printf("%-23s: (node is not joined to the cluster)%n", "Token"); |
| } |
| } |
| |
| /** |
| * Returns the total off heap memory used in MB. |
| * @return the total off heap memory used in MB. |
| */ |
| private static double getOffHeapMemoryUsed(NodeProbe probe) |
| { |
| long offHeapMemUsedInBytes = 0; |
| // get a list of column family stores |
| Iterator<Map.Entry<String, ColumnFamilyStoreMBean>> cfamilies = probe.getColumnFamilyStoreMBeanProxies(); |
| |
| while (cfamilies.hasNext()) |
| { |
| Entry<String, ColumnFamilyStoreMBean> entry = cfamilies.next(); |
| String keyspaceName = entry.getKey(); |
| String cfName = entry.getValue().getColumnFamilyName(); |
| |
| offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableOffHeapSize"); |
| offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterOffHeapMemoryUsed"); |
| offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "IndexSummaryOffHeapMemoryUsed"); |
| offHeapMemUsedInBytes += (Long) probe.getColumnFamilyMetric(keyspaceName, cfName, "CompressionMetadataOffHeapMemoryUsed"); |
| } |
| |
| return offHeapMemUsedInBytes / (1024d * 1024); |
| } |
| } |