| /* |
| * 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.drill.exec.rpc.control; |
| |
| import org.apache.drill.exec.memory.BufferAllocator; |
| import org.apache.drill.exec.metrics.DrillMetrics; |
| import org.apache.drill.exec.rpc.AbstractRpcMetrics; |
| import com.codahale.metrics.Counter; |
| import org.apache.drill.exec.rpc.RpcMetrics; |
| |
| /** |
| * Holds metrics related to bit control rpc layer |
| */ |
| public class ControlRpcMetrics extends AbstractRpcMetrics { |
| //private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ControlRpcMetrics.class); |
| |
| // Total number of control connection's as client and server for a DrillBit. |
| // i.e. Sum of incoming and outgoing control connections. |
| private static final Counter encryptedConnections = DrillMetrics.getRegistry() |
| .counter(CONNECTION_COUNTER_PREFIX + "control.encrypted"); |
| |
| private static final Counter unencryptedConnection = DrillMetrics.getRegistry() |
| .counter(CONNECTION_COUNTER_PREFIX + "control.unencrypted"); |
| |
| private static final RpcMetrics INSTANCE = new ControlRpcMetrics(); |
| |
| // prevent instantiation |
| private ControlRpcMetrics() { |
| } |
| |
| public static RpcMetrics getInstance() { |
| return INSTANCE; |
| } |
| |
| /** |
| * Should only be called when first access to getInstance is made. In this case inside {@link ControllerImpl}. |
| * {@link ControlConnection} using the singleton instance should not call initialize. |
| * |
| * @param useEncryptedCounter |
| * @param allocator |
| */ |
| @Override |
| public void initialize(boolean useEncryptedCounter, BufferAllocator allocator) { |
| this.useEncryptedCounter = useEncryptedCounter; |
| registerAllocatorMetrics(allocator); |
| } |
| |
| @Override |
| public void addConnectionCount() { |
| if (useEncryptedCounter) { |
| encryptedConnections.inc(); |
| } else { |
| unencryptedConnection.inc(); |
| } |
| } |
| |
| @Override |
| public void decConnectionCount() { |
| if (useEncryptedCounter) { |
| encryptedConnections.dec(); |
| } else { |
| unencryptedConnection.dec(); |
| } |
| } |
| |
| @Override |
| public long getEncryptedConnectionCount() { |
| return encryptedConnections.getCount(); |
| } |
| |
| @Override |
| public long getUnEncryptedConnectionCount() { |
| return unencryptedConnection.getCount(); |
| } |
| |
| private void registerAllocatorMetrics(final BufferAllocator allocator) { |
| registerAllocatorMetrics(allocator, ALLOCATOR_METRICS_PREFIX + "bit.control."); |
| } |
| } |