/**
* 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.hadoop.hbase.regionserver;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Append;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Increment;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Row;
import org.apache.hadoop.hbase.client.RowMutations;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.client.coprocessor.Batch.Call;
import org.apache.hadoop.hbase.client.coprocessor.Batch.Callback;
import org.apache.hadoop.hbase.client.metrics.ScanMetrics;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
import com.google.protobuf.Descriptors.MethodDescriptor;
import com.google.protobuf.Message;
import com.google.protobuf.Service;
import com.google.protobuf.ServiceException;
/**
* An implementation of {@link Table} that sits directly on a Region; it decorates the passed in
* Region instance with the Table API. Some API is not implemented yet (throws
* {@link UnsupportedOperationException}) mostly because no need as yet or it necessitates copying
* a load of code local from RegionServer.
*
* <p>Use as an instance of a {@link Table} in-the-small -- no networking or servers
* necessary -- or to write a test that can run directly against the datastore and then
* over the network.
*/
public class RegionAsTable implements Table {
private final Region region;
/**
* @param region Region to decorate with Table API.
*/
public RegionAsTable(final Region region) {
this.region = region;
}
@Override
public TableName getName() {
return this.region.getTableDesc().getTableName();
}
@Override
public Configuration getConfiguration() {
throw new UnsupportedOperationException();
}
@Override
public HTableDescriptor getTableDescriptor() throws IOException {
return this.region.getTableDesc();
}
@Override
public boolean exists(Get get) throws IOException {
if (!get.isCheckExistenceOnly()) throw new IllegalArgumentException();
return get(get) != null;
}
@Override
public boolean[] existsAll(List<Get> gets) throws IOException {
boolean [] results = new boolean[gets.size()];
int index = 0;
for (Get get: gets) {
results[index++] = exists(get);
}
return results;
}
@Override
public void batch(List<? extends Row> actions, Object[] results)
throws IOException, InterruptedException {
throw new UnsupportedOperationException();
}
@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results,
Callback<R> callback)
throws IOException, InterruptedException {
throw new UnsupportedOperationException();
}
@Override
public Result get(Get get) throws IOException {
return this.region.get(get);
}
@Override
public Result[] get(List<Get> gets) throws IOException {
Result [] results = new Result[gets.size()];
int index = 0;
for (Get get: gets) {
results[index++] = get(get);
}
return results;
}
static class RegionScannerToResultScannerAdaptor implements ResultScanner {
private static final Result [] EMPTY_RESULT_ARRAY = new Result[0];
private final RegionScanner regionScanner;
RegionScannerToResultScannerAdaptor(final RegionScanner regionScanner) {
this.regionScanner = regionScanner;
}
@Override
public Iterator<Result> iterator() {
throw new UnsupportedOperationException();
}
@Override
public Result next() throws IOException {
List<Cell> cells = new ArrayList<>();
return regionScanner.next(cells)? Result.create(cells): null;
}
@Override
public Result[] next(int nbRows) throws IOException {
List<Result> results = new ArrayList<>(nbRows);
for (int i = 0; i < nbRows; i++) {
Result result = next();
if (result == null) break;
results.add(result);
}
return results.toArray(EMPTY_RESULT_ARRAY);
}
@Override
public void close() {
try {
regionScanner.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
public boolean renewLease() {
throw new UnsupportedOperationException();
}
@Override
public ScanMetrics getScanMetrics() {
throw new UnsupportedOperationException();
}
};
@Override
public ResultScanner getScanner(Scan scan) throws IOException {
return new RegionScannerToResultScannerAdaptor(this.region.getScanner(scan));
}
@Override
public ResultScanner getScanner(byte[] family) throws IOException {
return getScanner(new Scan().addFamily(family));
}
@Override
public ResultScanner getScanner(byte[] family, byte[] qualifier) throws IOException {
return getScanner(new Scan().addColumn(family, qualifier));
}
@Override
public void put(Put put) throws IOException {
this.region.put(put);
}
@Override
public void put(List<Put> puts) throws IOException {
for (Put put: puts) put(put);
}
@Override
public boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, byte[] value, Put put)
throws IOException {
throw new UnsupportedOperationException();
}
@Override
public boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, CompareOp compareOp,
byte[] value, Put put)
throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void delete(Delete delete) throws IOException {
this.region.delete(delete);
}
@Override
public void delete(List<Delete> deletes) throws IOException {
for(Delete delete: deletes) delete(delete);
}
@Override
public boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, byte[] value,
Delete delete)
throws IOException {
throw new UnsupportedOperationException();
}
@Override
public boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier,
CompareOp compareOp, byte[] value, Delete delete)
throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void mutateRow(RowMutations rm) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public Result append(Append append) throws IOException {
return this.region.append(append, HConstants.NO_NONCE, HConstants.NO_NONCE);
}
@Override
public Result increment(Increment increment) throws IOException {
return this.region.increment(increment, HConstants.NO_NONCE, HConstants.NO_NONCE);
}
@Override
public long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, long amount)
throws IOException {
throw new UnsupportedOperationException();
}
@Override
public long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, long amount,
Durability durability)
throws IOException {
throw new UnsupportedOperationException();
}
/**
* This call will NOT close the underlying region.
*/
@Override
public void close() throws IOException {
}
@Override
public CoprocessorRpcChannel coprocessorService(byte[] row) {
throw new UnsupportedOperationException();
}
@Override
public <T extends Service, R> Map<byte[], R> coprocessorService(Class<T> service, byte[] startKey,
byte[] endKey, Call<T, R> callable)
throws ServiceException, Throwable {
throw new UnsupportedOperationException();
}
@Override
public <T extends Service, R> void coprocessorService(Class<T> service, byte[] startKey,
byte[] endKey, Call<T, R> callable, Callback<R> callback)
throws ServiceException, Throwable {
throw new UnsupportedOperationException();
}
@Override
public long getWriteBufferSize() {
throw new UnsupportedOperationException();
}
@Override
public void setWriteBufferSize(long writeBufferSize) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public <R extends Message> Map<byte[], R> batchCoprocessorService(MethodDescriptor
methodDescriptor, Message request,
byte[] startKey, byte[] endKey, R responsePrototype)
throws ServiceException, Throwable {
throw new UnsupportedOperationException();
}
@Override
public <R extends Message> void batchCoprocessorService(MethodDescriptor methodDescriptor,
Message request, byte[] startKey, byte[] endKey, R responsePrototype, Callback<R> callback)
throws ServiceException, Throwable {
throw new UnsupportedOperationException();
}
@Override
public boolean checkAndMutate(byte[] row, byte[] family, byte[] qualifier, CompareOp compareOp,
byte[] value, RowMutations mutation)
throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void setOperationTimeout(int operationTimeout) {
throw new UnsupportedOperationException();
}
@Override
public int getOperationTimeout() {
throw new UnsupportedOperationException();
}
@Override
@Deprecated
public void setRpcTimeout(int rpcTimeout) {
throw new UnsupportedOperationException();
}
@Override
public void setWriteRpcTimeout(int writeRpcTimeout) {throw new UnsupportedOperationException(); }
@Override
public void setReadRpcTimeout(int readRpcTimeout) {throw new UnsupportedOperationException(); }
@Override
@Deprecated
public int getRpcTimeout() {
throw new UnsupportedOperationException();
}
@Override
public int getWriteRpcTimeout() { throw new UnsupportedOperationException(); }
@Override
public int getReadRpcTimeout() { throw new UnsupportedOperationException(); }
}