| /* |
| * 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; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.db.SnapshotCommand; |
| import org.apache.cassandra.dht.Range; |
| import org.apache.cassandra.dht.Token; |
| import org.apache.cassandra.net.IVerbHandler; |
| import org.apache.cassandra.net.Message; |
| import org.apache.cassandra.net.MessagingService; |
| import org.apache.cassandra.utils.DiagnosticSnapshotService; |
| |
| import static org.apache.cassandra.net.ParamType.SNAPSHOT_RANGES; |
| |
| public class SnapshotVerbHandler implements IVerbHandler<SnapshotCommand> |
| { |
| public static final SnapshotVerbHandler instance = new SnapshotVerbHandler(); |
| private static final Logger logger = LoggerFactory.getLogger(SnapshotVerbHandler.class); |
| |
| public void doVerb(Message<SnapshotCommand> message) |
| { |
| SnapshotCommand command = message.payload; |
| if (command.clear_snapshot) |
| { |
| StorageService.instance.clearSnapshot(command.snapshot_name, command.keyspace); |
| } |
| else if (DiagnosticSnapshotService.isDiagnosticSnapshotRequest(command)) |
| { |
| List<Range<Token>> ranges = Collections.emptyList(); |
| if (message.header.params().containsKey(SNAPSHOT_RANGES)) |
| ranges = (List<Range<Token>>) message.header.params().get(SNAPSHOT_RANGES); |
| DiagnosticSnapshotService.snapshot(command, ranges, message.from()); |
| } |
| else |
| { |
| Keyspace.open(command.keyspace).getColumnFamilyStore(command.column_family).snapshot(command.snapshot_name); |
| } |
| |
| logger.debug("Enqueuing response to snapshot request {} to {}", command.snapshot_name, message.from()); |
| MessagingService.instance().send(message.emptyResponse(), message.from()); |
| } |
| } |