/**
* 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.master;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.TreeMap;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.catalog.CatalogTracker;
import org.apache.hadoop.hbase.client.AdminProtocol;
import org.apache.hadoop.hbase.client.ClientProtocol;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.ipc.ProtocolSignature;
import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.FlushRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.FlushRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ExecCoprocessorRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ExecCoprocessorResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.LockRowRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.LockRowResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.UnlockRowRequest;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.UnlockRowResponse;
import org.apache.hadoop.hbase.regionserver.CompactionRequestor;
import org.apache.hadoop.hbase.regionserver.FlushRequester;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.Leases;
import org.apache.hadoop.hbase.regionserver.RegionServerAccounting;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
import org.apache.hadoop.hbase.regionserver.wal.HLog;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.zookeeper.KeeperException;
import com.google.protobuf.RpcController;
import com.google.protobuf.ServiceException;
/**
* A mock RegionServer implementation.
* Use this when you can't bend Mockito to your liking (e.g. return null result
* when 'scanning' until master timesout and then return a coherent meta row
* result thereafter. Have some facility for faking gets and scans. See
* {@link #setGetResult(byte[], byte[], Result)} for how to fill the backing data
* store that the get pulls from.
*/
class MockRegionServer implements AdminProtocol, ClientProtocol, RegionServerServices {
private final ServerName sn;
private final ZooKeeperWatcher zkw;
private final Configuration conf;
private final Random random = new Random();
/**
* Map of regions to map of rows and {@link Results}. Used as data source when
* {@link MockRegionServer#get(byte[], Get)} is called. Because we have a byte
* key, need to use TreeMap and provide a Comparator. Use
* {@link #setGetResult(byte[], byte[], Result)} filling this map.
*/
private final Map<byte [], Map<byte [], Result>> gets =
new TreeMap<byte [], Map<byte [], Result>>(Bytes.BYTES_COMPARATOR);
/**
* Map of regions to results to return when scanning.
*/
private final Map<byte [], Result []> nexts =
new TreeMap<byte [], Result []>(Bytes.BYTES_COMPARATOR);
/**
* Data structure that holds regionname and index used scanning.
*/
class RegionNameAndIndex {
private final byte[] regionName;
private int index = 0;
RegionNameAndIndex(final byte[] regionName) {
this.regionName = regionName;
}
byte[] getRegionName() {
return this.regionName;
}
int getThenIncrement() {
int currentIndex = this.index;
this.index++;
return currentIndex;
}
}
/**
* Outstanding scanners and their offset into <code>nexts</code>
*/
private final Map<Long, RegionNameAndIndex> scannersAndOffsets =
new HashMap<Long, RegionNameAndIndex>();
/**
* @param sn Name of this mock regionserver
* @throws IOException
* @throws ZooKeeperConnectionException
*/
MockRegionServer(final Configuration conf, final ServerName sn)
throws ZooKeeperConnectionException, IOException {
this.sn = sn;
this.conf = conf;
this.zkw = new ZooKeeperWatcher(conf, sn.toString(), this, true);
}
/**
* Use this method filling the backing data source used by {@link #get(byte[], Get)}
* @param regionName
* @param row
* @param r
*/
void setGetResult(final byte [] regionName, final byte [] row, final Result r) {
Map<byte [], Result> value = this.gets.get(regionName);
if (value == null) {
// If no value already, create one. Needs to be treemap because we are
// using byte array as key. Not thread safe.
value = new TreeMap<byte [], Result>(Bytes.BYTES_COMPARATOR);
this.gets.put(regionName, value);
}
value.put(row, r);
}
/**
* Use this method to set what a scanner will reply as we next through
* @param regionName
* @param rs
*/
void setNextResults(final byte [] regionName, final Result [] rs) {
this.nexts.put(regionName, rs);
}
@Override
public long getProtocolVersion(String protocol, long clientVersion)
throws IOException {
// TODO Auto-generated method stub
return 0;
}
@Override
public ProtocolSignature getProtocolSignature(String protocol,
long clientVersion, int clientMethodsHash) throws IOException {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean isStopped() {
// TODO Auto-generated method stub
return false;
}
@Override
public void abort(String why, Throwable e) {
throw new RuntimeException(this.sn + ": " + why, e);
}
@Override
public boolean isAborted() {
return false;
}
public long openScanner(byte[] regionName, Scan scan) throws IOException {
long scannerId = this.random.nextLong();
this.scannersAndOffsets.put(scannerId, new RegionNameAndIndex(regionName));
return scannerId;
}
public Result next(long scannerId) throws IOException {
RegionNameAndIndex rnai = this.scannersAndOffsets.get(scannerId);
int index = rnai.getThenIncrement();
Result [] results = this.nexts.get(rnai.getRegionName());
if (results == null) return null;
return index < results.length? results[index]: null;
}
public Result [] next(long scannerId, int numberOfRows) throws IOException {
// Just return one result whatever they ask for.
Result r = next(scannerId);
return r == null? null: new Result [] {r};
}
public void close(final long scannerId) throws IOException {
this.scannersAndOffsets.remove(scannerId);
}
@Override
public void stop(String why) {
this.zkw.close();
}
@Override
public void addToOnlineRegions(HRegion r) {
// TODO Auto-generated method stub
}
@Override
public boolean removeFromOnlineRegions(String encodedRegionName, ServerName destination) {
// TODO Auto-generated method stub
return false;
}
@Override
public HRegion getFromOnlineRegions(String encodedRegionName) {
// TODO Auto-generated method stub
return null;
}
@Override
public Configuration getConfiguration() {
return this.conf;
}
@Override
public ZooKeeperWatcher getZooKeeper() {
return this.zkw;
}
@Override
public CatalogTracker getCatalogTracker() {
// TODO Auto-generated method stub
return null;
}
@Override
public ServerName getServerName() {
return this.sn;
}
@Override
public boolean isStopping() {
return false;
}
@Override
public HLog getWAL() {
// TODO Auto-generated method stub
return null;
}
@Override
public CompactionRequestor getCompactionRequester() {
// TODO Auto-generated method stub
return null;
}
@Override
public FlushRequester getFlushRequester() {
// TODO Auto-generated method stub
return null;
}
@Override
public RegionServerAccounting getRegionServerAccounting() {
// TODO Auto-generated method stub
return null;
}
@Override
public void postOpenDeployTasks(HRegion r, CatalogTracker ct, boolean daughter)
throws KeeperException, IOException {
// TODO Auto-generated method stub
}
@Override
public RpcServer getRpcServer() {
// TODO Auto-generated method stub
return null;
}
@Override
public Map<byte[], Boolean> getRegionsInTransitionInRS() {
// TODO Auto-generated method stub
return null;
}
@Override
public FileSystem getFileSystem() {
// TODO Auto-generated method stub
return null;
}
@Override
public GetResponse get(RpcController controller, GetRequest request)
throws ServiceException {
byte[] regionName = request.getRegion().getValue().toByteArray();
Map<byte [], Result> m = this.gets.get(regionName);
GetResponse.Builder builder = GetResponse.newBuilder();
if (m != null) {
byte[] row = request.getGet().getRow().toByteArray();
builder.setResult(ProtobufUtil.toResult(m.get(row)));
}
return builder.build();
}
@Override
public MutateResponse mutate(RpcController controller, MutateRequest request)
throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public ScanResponse scan(RpcController controller, ScanRequest request)
throws ServiceException {
ScanResponse.Builder builder = ScanResponse.newBuilder();
try {
if (request.hasScan()) {
byte[] regionName = request.getRegion().getValue().toByteArray();
builder.setScannerId(openScanner(regionName, null));
builder.setMoreResults(true);
}
else {
long scannerId = request.getScannerId();
Result result = next(scannerId);
if (result != null) {
builder.addResult(ProtobufUtil.toResult(result));
builder.setMoreResults(true);
}
else {
builder.setMoreResults(false);
close(scannerId);
}
}
} catch (IOException ie) {
throw new ServiceException(ie);
}
return builder.build();
}
@Override
public LockRowResponse lockRow(RpcController controller,
LockRowRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public UnlockRowResponse unlockRow(RpcController controller,
UnlockRowRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public BulkLoadHFileResponse bulkLoadHFile(RpcController controller,
BulkLoadHFileRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public ExecCoprocessorResponse execCoprocessor(RpcController controller,
ExecCoprocessorRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public ClientProtos.CoprocessorServiceResponse execService(RpcController controller,
ClientProtos.CoprocessorServiceRequest request) throws ServiceException {
return null;
}
@Override
public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiResponse multi(
RpcController controller, MultiRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public GetRegionInfoResponse getRegionInfo(RpcController controller,
GetRegionInfoRequest request) throws ServiceException {
GetRegionInfoResponse.Builder builder = GetRegionInfoResponse.newBuilder();
builder.setRegionInfo(HRegionInfo.convert(HRegionInfo.ROOT_REGIONINFO));
return builder.build();
}
@Override
public GetStoreFileResponse getStoreFile(RpcController controller,
GetStoreFileRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public GetOnlineRegionResponse getOnlineRegion(RpcController controller,
GetOnlineRegionRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public OpenRegionResponse openRegion(RpcController controller,
OpenRegionRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public CloseRegionResponse closeRegion(RpcController controller,
CloseRegionRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public FlushRegionResponse flushRegion(RpcController controller,
FlushRegionRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public SplitRegionResponse splitRegion(RpcController controller,
SplitRegionRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public CompactRegionResponse compactRegion(RpcController controller,
CompactRegionRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public ReplicateWALEntryResponse replicateWALEntry(RpcController controller,
ReplicateWALEntryRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public RollWALWriterResponse rollWALWriter(RpcController controller,
RollWALWriterRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public GetServerInfoResponse getServerInfo(RpcController controller,
GetServerInfoRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public StopServerResponse stopServer(RpcController controller,
StopServerRequest request) throws ServiceException {
// TODO Auto-generated method stub
return null;
}
@Override
public List<HRegion> getOnlineRegions(byte[] tableName) throws IOException {
// TODO Auto-generated method stub
return null;
}
@Override
public Leases getLeases() {
// TODO Auto-generated method stub
return null;
}
}