org.apache.accumulo.tserver.replication.ReplicationServicerHandler Maven / Gradle / Ivy
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The tablet server for Apache Accumulo to host tablets of data tables.
/*
* 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.tserver.replication;
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.clientImpl.Tables;
import org.apache.accumulo.core.conf.AccumuloConfiguration;
import org.apache.accumulo.core.conf.Property;
import org.apache.accumulo.core.data.TableId;
import org.apache.accumulo.core.replication.AccumuloReplicationReplayer;
import org.apache.accumulo.core.replication.thrift.KeyValues;
import org.apache.accumulo.core.replication.thrift.RemoteReplicationErrorCode;
import org.apache.accumulo.core.replication.thrift.RemoteReplicationException;
import org.apache.accumulo.core.replication.thrift.ReplicationServicer.Iface;
import org.apache.accumulo.core.replication.thrift.WalEdits;
import org.apache.accumulo.core.securityImpl.thrift.TCredentials;
import org.apache.accumulo.tserver.TabletServer;
import org.apache.thrift.TException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ReplicationServicerHandler implements Iface {
private static final Logger log = LoggerFactory.getLogger(ReplicationServicerHandler.class);
private TabletServer tabletServer;
public ReplicationServicerHandler(TabletServer tabletServer) {
this.tabletServer = tabletServer;
}
@Override
public long replicateLog(String tableIdStr, WalEdits data, TCredentials tcreds)
throws TException {
TableId tableId = TableId.of(tableIdStr);
log.debug("Got replication request to tableID {} with {} edits", tableId, data.getEditsSize());
tabletServer.getSecurityOperation().authenticateUser(tabletServer.getContext().rpcCreds(),
tcreds);
String tableName;
try {
tableName = Tables.getTableName(tabletServer.getContext(), tableId);
} catch (TableNotFoundException e) {
log.error("Could not find table with id {}", tableId);
throw new RemoteReplicationException(RemoteReplicationErrorCode.TABLE_DOES_NOT_EXIST,
"Table with id " + tableId + " does not exist");
}
AccumuloConfiguration conf = tabletServer.getConfiguration();
Map replicationHandlers =
conf.getAllPropertiesWithPrefix(Property.TSERV_REPLICATION_REPLAYERS);
String propertyForHandlerTable = Property.TSERV_REPLICATION_REPLAYERS.getKey() + tableId;
String handlerClassForTable = replicationHandlers.get(propertyForHandlerTable);
if (handlerClassForTable == null) {
if (!replicationHandlers.isEmpty()) {
log.debug("Could not find replication replayer for {}", tableId);
}
handlerClassForTable = conf.get(Property.TSERV_REPLICATION_DEFAULT_HANDLER);
}
log.debug("Using {} replication replayer for table {}", handlerClassForTable, tableId);
// Get class for replayer
Class clz;
try {
Class untypedClz = Class.forName(handlerClassForTable);
clz = untypedClz.asSubclass(AccumuloReplicationReplayer.class);
} catch (ClassNotFoundException e) {
log.error("Could not instantiate replayer class {}", handlerClassForTable, e);
throw new RemoteReplicationException(RemoteReplicationErrorCode.CANNOT_INSTANTIATE_REPLAYER,
"Could not instantiate replayer class " + handlerClassForTable);
}
// Create an instance
AccumuloReplicationReplayer replayer;
try {
replayer = clz.newInstance();
} catch (InstantiationException | IllegalAccessException e1) {
log.error("Could not instantiate replayer class {}", clz.getName());
throw new RemoteReplicationException(RemoteReplicationErrorCode.CANNOT_INSTANTIATE_REPLAYER,
"Could not instantiate replayer class" + clz.getName());
}
long entriesReplicated;
try {
entriesReplicated = replayer.replicateLog(tabletServer.getContext(), tableName, data);
} catch (AccumuloException | AccumuloSecurityException e) {
log.error("Could not get connection", e);
throw new RemoteReplicationException(RemoteReplicationErrorCode.CANNOT_AUTHENTICATE,
"Cannot get connection as " + tabletServer.getContext().getCredentials().getPrincipal());
}
log.debug("Replicated {} mutations to {}", entriesReplicated, tableName);
return entriesReplicated;
}
@Override
public long replicateKeyValues(String tableId, KeyValues data, TCredentials creds) {
throw new UnsupportedOperationException();
}
}