| /* |
| * 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 java.io.PrintStream; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import io.airlift.airline.Command; |
| import io.airlift.airline.Option; |
| import org.apache.cassandra.tools.NodeProbe; |
| import org.apache.cassandra.tools.NodeTool.NodeToolCmd; |
| import org.apache.cassandra.tools.nodetool.formatter.TableBuilder; |
| import org.apache.cassandra.transport.ClientStat; |
| import org.apache.cassandra.transport.ConnectedClient; |
| |
| @Command(name = "clientstats", description = "Print information about connected clients") |
| public class ClientStats extends NodeToolCmd |
| { |
| @Option(title = "list_connections", name = "--all", description = "Lists all connections") |
| private boolean listConnections = false; |
| |
| @Option(title = "by_protocol", name = "--by-protocol", description = "Lists most recent client connections by protocol version") |
| private boolean connectionsByProtocolVersion = false; |
| |
| @Option(title = "clear_history", name = "--clear-history", description = "Clear the history of connected clients") |
| private boolean clearConnectionHistory = false; |
| |
| @Override |
| public void execute(NodeProbe probe) |
| { |
| PrintStream out = probe.output().out; |
| if (clearConnectionHistory) |
| { |
| out.println("Clearing connection history"); |
| probe.clearConnectionHistory(); |
| return; |
| } |
| |
| if (connectionsByProtocolVersion) |
| { |
| SimpleDateFormat sdf = new SimpleDateFormat("MMM dd, yyyy HH:mm:ss"); |
| |
| out.println("Clients by protocol version"); |
| out.println(); |
| |
| List<Map<String, String>> clients = (List<Map<String, String>>) probe.getClientMetric("clientsByProtocolVersion"); |
| |
| if (!clients.isEmpty()) |
| { |
| TableBuilder table = new TableBuilder(); |
| table.add("Protocol-Version", "IP-Address", "Last-Seen"); |
| |
| for (Map<String, String> client : clients) |
| { |
| table.add(client.get(ClientStat.PROTOCOL_VERSION), |
| client.get(ClientStat.INET_ADDRESS), |
| sdf.format(new Date(Long.valueOf(client.get(ClientStat.LAST_SEEN_TIME))))); |
| } |
| |
| table.printTo(out); |
| out.println(); |
| } |
| |
| return; |
| } |
| |
| if (listConnections) |
| { |
| List<Map<String, String>> clients = (List<Map<String, String>>) probe.getClientMetric("connections"); |
| if (!clients.isEmpty()) |
| { |
| TableBuilder table = new TableBuilder(); |
| table.add("Address", "SSL", "Cipher", "Protocol", "Version", "User", "Keyspace", "Requests", "Driver-Name", "Driver-Version"); |
| for (Map<String, String> conn : clients) |
| { |
| table.add(conn.get(ConnectedClient.ADDRESS), |
| conn.get(ConnectedClient.SSL), |
| conn.get(ConnectedClient.CIPHER), |
| conn.get(ConnectedClient.PROTOCOL), |
| conn.get(ConnectedClient.VERSION), |
| conn.get(ConnectedClient.USER), |
| conn.get(ConnectedClient.KEYSPACE), |
| conn.get(ConnectedClient.REQUESTS), |
| conn.get(ConnectedClient.DRIVER_NAME), |
| conn.get(ConnectedClient.DRIVER_VERSION)); |
| } |
| table.printTo(out); |
| out.println(); |
| } |
| } |
| |
| Map<String, Integer> connectionsByUser = (Map<String, Integer>) probe.getClientMetric("connectedNativeClientsByUser"); |
| int total = connectionsByUser.values().stream().reduce(0, Integer::sum); |
| out.println("Total connected clients: " + total); |
| out.println(); |
| TableBuilder table = new TableBuilder(); |
| table.add("User", "Connections"); |
| for (Entry<String, Integer> entry : connectionsByUser.entrySet()) |
| { |
| table.add(entry.getKey(), entry.getValue().toString()); |
| } |
| table.printTo(out); |
| } |
| } |