| /* |
| * 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.accumulo.core.clientImpl; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.TableNotFoundException; |
| import org.apache.accumulo.core.client.TimedOutException; |
| import org.apache.accumulo.core.data.Mutation; |
| import org.apache.accumulo.core.data.Range; |
| import org.apache.accumulo.core.data.TableId; |
| import org.apache.accumulo.core.dataImpl.KeyExtent; |
| import org.apache.hadoop.io.Text; |
| |
| /** |
| * Throws a {@link TimedOutException} if the specified timeout duration elapses between two failed |
| * TabletLocator calls. |
| * <p> |
| * This class is safe to cache locally. |
| */ |
| public class TimeoutTabletLocator extends SyncingTabletLocator { |
| |
| private long timeout; |
| private Long firstFailTime = null; |
| |
| private void failed() { |
| if (firstFailTime == null) { |
| firstFailTime = System.currentTimeMillis(); |
| } else if (System.currentTimeMillis() - firstFailTime > timeout) { |
| throw new TimedOutException("Failed to obtain metadata"); |
| } |
| } |
| |
| private void succeeded() { |
| firstFailTime = null; |
| } |
| |
| public TimeoutTabletLocator(long timeout, final ClientContext context, final TableId table) { |
| super(context, table); |
| this.timeout = timeout; |
| } |
| |
| @Override |
| public TabletLocation locateTablet(ClientContext context, Text row, boolean skipRow, |
| boolean retry) throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| try { |
| TabletLocation ret = super.locateTablet(context, row, skipRow, retry); |
| |
| if (ret == null) |
| failed(); |
| else |
| succeeded(); |
| |
| return ret; |
| } catch (AccumuloException ae) { |
| failed(); |
| throw ae; |
| } |
| } |
| |
| @Override |
| public <T extends Mutation> void binMutations(ClientContext context, List<T> mutations, |
| Map<String,TabletServerMutations<T>> binnedMutations, List<T> failures) |
| throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| try { |
| super.binMutations(context, mutations, binnedMutations, failures); |
| |
| if (failures.size() == mutations.size()) |
| failed(); |
| else |
| succeeded(); |
| |
| } catch (AccumuloException ae) { |
| failed(); |
| throw ae; |
| } |
| } |
| |
| @Override |
| public List<Range> binRanges(ClientContext context, List<Range> ranges, |
| Map<String,Map<KeyExtent,List<Range>>> binnedRanges) |
| throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| try { |
| List<Range> ret = super.binRanges(context, ranges, binnedRanges); |
| |
| if (ranges.size() == ret.size()) |
| failed(); |
| else |
| succeeded(); |
| |
| return ret; |
| } catch (AccumuloException ae) { |
| failed(); |
| throw ae; |
| } |
| } |
| } |