| /* |
| * 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.client.impl; |
| |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.Callable; |
| |
| 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.data.Mutation; |
| import org.apache.accumulo.core.data.Range; |
| import org.apache.accumulo.core.data.impl.KeyExtent; |
| import org.apache.hadoop.io.Text; |
| import org.apache.log4j.Logger; |
| |
| /** |
| * Syncs itself with the static collection of TabletLocators, so that when the server clears it, it |
| * will automatically get the most up-to-date version. Caching TabletLocators locally is safe when |
| * using SyncingTabletLocator. |
| */ |
| public class SyncingTabletLocator extends TabletLocator { |
| private static final Logger log = Logger.getLogger(SyncingTabletLocator.class); |
| |
| private volatile TabletLocator locator; |
| private final Callable<TabletLocator> getLocatorFunction; |
| |
| public SyncingTabletLocator(Callable<TabletLocator> getLocatorFunction) { |
| this.getLocatorFunction = getLocatorFunction; |
| try { |
| this.locator = getLocatorFunction.call(); |
| } catch (Exception e) { |
| log.error("Problem obtaining TabletLocator", e); |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public SyncingTabletLocator(final ClientContext context, final Table.ID tableId) { |
| this(() -> TabletLocator.getLocator(context, tableId)); |
| } |
| |
| private TabletLocator syncLocator() { |
| TabletLocator loc = this.locator; |
| if (!loc.isValid()) |
| synchronized (this) { |
| if (locator == loc) |
| try { |
| loc = locator = getLocatorFunction.call(); |
| } catch (Exception e) { |
| log.error("Problem obtaining TabletLocator", e); |
| throw new RuntimeException(e); |
| } |
| } |
| return loc; |
| } |
| |
| @Override |
| public TabletLocation locateTablet(ClientContext context, Text row, boolean skipRow, |
| boolean retry) throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| return syncLocator().locateTablet(context, row, skipRow, retry); |
| } |
| |
| @Override |
| public <T extends Mutation> void binMutations(ClientContext context, List<T> mutations, |
| Map<String,TabletServerMutations<T>> binnedMutations, List<T> failures) |
| throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| syncLocator().binMutations(context, mutations, binnedMutations, failures); |
| } |
| |
| @Override |
| public List<Range> binRanges(ClientContext context, List<Range> ranges, |
| Map<String,Map<KeyExtent,List<Range>>> binnedRanges) |
| throws AccumuloException, AccumuloSecurityException, TableNotFoundException { |
| return syncLocator().binRanges(context, ranges, binnedRanges); |
| } |
| |
| @Override |
| public void invalidateCache(KeyExtent failedExtent) { |
| syncLocator().invalidateCache(failedExtent); |
| } |
| |
| @Override |
| public void invalidateCache(Collection<KeyExtent> keySet) { |
| syncLocator().invalidateCache(keySet); |
| } |
| |
| @Override |
| public void invalidateCache() { |
| syncLocator().invalidateCache(); |
| } |
| |
| @Override |
| public void invalidateCache(ClientContext context, String server) { |
| syncLocator().invalidateCache(context, server); |
| } |
| } |