| /* |
| * 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.service.reads.thresholds; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| |
| public class WarnAbortCounter |
| { |
| final Set<InetAddressAndPort> warnings = Collections.newSetFromMap(new ConcurrentHashMap<>()); |
| // the highest number reported by a node's warning |
| final AtomicLong maxWarningValue = new AtomicLong(); |
| |
| final Set<InetAddressAndPort> aborts = Collections.newSetFromMap(new ConcurrentHashMap<>()); |
| // the highest number reported by a node's rejection. |
| final AtomicLong maxAbortsValue = new AtomicLong(); |
| |
| void addWarning(InetAddressAndPort from, long value) |
| { |
| maxWarningValue.accumulateAndGet(value, Math::max); |
| // call add last so concurrent reads see empty even if values > 0; if done in different order then |
| // size=1 could have values == 0 |
| warnings.add(from); |
| } |
| |
| void addAbort(InetAddressAndPort from, long value) |
| { |
| maxAbortsValue.accumulateAndGet(value, Math::max); |
| // call add last so concurrent reads see empty even if values > 0; if done in different order then |
| // size=1 could have values == 0 |
| aborts.add(from); |
| } |
| |
| public WarningsSnapshot.Warnings snapshot() |
| { |
| return WarningsSnapshot.Warnings.create(WarningsSnapshot.Counter.create(warnings, maxWarningValue), WarningsSnapshot.Counter.create(aborts, maxAbortsValue)); |
| } |
| } |