| /* |
| * 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.EnumSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.cassandra.exceptions.RequestFailureReason; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.net.ParamType; |
| |
| public class WarningContext |
| { |
| private static EnumSet<ParamType> SUPPORTED = EnumSet.of(ParamType.TOMBSTONE_WARNING, ParamType.TOMBSTONE_FAIL, |
| ParamType.LOCAL_READ_SIZE_WARN, ParamType.LOCAL_READ_SIZE_FAIL, |
| ParamType.ROW_INDEX_READ_SIZE_WARN, ParamType.ROW_INDEX_READ_SIZE_FAIL); |
| |
| final WarnAbortCounter tombstones = new WarnAbortCounter(); |
| final WarnAbortCounter localReadSize = new WarnAbortCounter(); |
| final WarnAbortCounter rowIndexReadSize = new WarnAbortCounter(); |
| |
| public static boolean isSupported(Set<ParamType> keys) |
| { |
| return !Collections.disjoint(keys, SUPPORTED); |
| } |
| |
| public RequestFailureReason updateCounters(Map<ParamType, Object> params, InetAddressAndPort from) |
| { |
| for (Map.Entry<ParamType, Object> entry : params.entrySet()) |
| { |
| WarnAbortCounter counter = null; |
| RequestFailureReason reason = null; |
| switch (entry.getKey()) |
| { |
| case ROW_INDEX_READ_SIZE_FAIL: |
| reason = RequestFailureReason.READ_SIZE; |
| case ROW_INDEX_READ_SIZE_WARN: |
| counter = rowIndexReadSize; |
| break; |
| case LOCAL_READ_SIZE_FAIL: |
| reason = RequestFailureReason.READ_SIZE; |
| case LOCAL_READ_SIZE_WARN: |
| counter = localReadSize; |
| break; |
| case TOMBSTONE_FAIL: |
| reason = RequestFailureReason.READ_TOO_MANY_TOMBSTONES; |
| case TOMBSTONE_WARNING: |
| counter = tombstones; |
| break; |
| } |
| if (reason != null) |
| { |
| counter.addAbort(from, ((Number) entry.getValue()).longValue()); |
| return reason; |
| } |
| if (counter != null) |
| counter.addWarning(from, ((Number) entry.getValue()).longValue()); |
| } |
| return null; |
| } |
| |
| public WarningsSnapshot snapshot() |
| { |
| return WarningsSnapshot.create(tombstones.snapshot(), localReadSize.snapshot(), rowIndexReadSize.snapshot()); |
| } |
| } |