2 * Copyright (c) 2018 Ericsson India Global Services Pvt Ltd. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.openflowplugin.impl.common;
10 import com.google.common.util.concurrent.RateLimiter;
11 import java.util.concurrent.TimeUnit;
12 import java.util.concurrent.atomic.AtomicReference;
13 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflow.provider.config.rev160510.OpenflowProviderConfig;
15 public class DeviceConnectionRateLimiter {
16 private final boolean doRateLimit;
17 private final AtomicReference<RateLimiter> rateLimiter;
19 public DeviceConnectionRateLimiter(final OpenflowProviderConfig config) {
20 int deviceConnectionRateLimitPerMin = config.getDeviceConnectionRateLimitPerMin().toJava();
21 double rateLimiterSize;
22 if (deviceConnectionRateLimitPerMin == 0) {
27 rateLimiterSize = 1d / (60d / deviceConnectionRateLimitPerMin);
29 rateLimiter = new AtomicReference<>(RateLimiter.create(rateLimiterSize));
33 public boolean tryAquire() {
35 return rateLimiter.get().tryAcquire(0, TimeUnit.SECONDS);