org.apache.hadoop.hbase.client.coprocessor.Batch.Callback#org.apache.hadoop.hbase.client.coprocessor.Batch源码实例Demo

public void refreshHFiles(final Table table) throws Throwable {
  final RefreshHFilesProtos.RefreshHFilesRequest request =
          RefreshHFilesProtos.RefreshHFilesRequest.getDefaultInstance();
  table.coprocessorService(RefreshHFilesProtos.RefreshHFilesService.class,
          HConstants.EMPTY_START_ROW, HConstants.EMPTY_END_ROW,
          new Batch.Call<RefreshHFilesProtos.RefreshHFilesService,
                  RefreshHFilesProtos.RefreshHFilesResponse>() {
      @Override
      public RefreshHFilesProtos.RefreshHFilesResponse call(
            RefreshHFilesProtos.RefreshHFilesService refreshHFilesService)
            throws IOException {
        ServerRpcController controller = new ServerRpcController();
        BlockingRpcCallback<RefreshHFilesProtos.RefreshHFilesResponse> rpcCallback =
              new BlockingRpcCallback<>();
        refreshHFilesService.refreshHFiles(controller, request, rpcCallback);

        if (controller.failedOnException()) {
          throw controller.getFailedOn();
        }

        return rpcCallback.get();
      }
    });
  LOG.debug("Done refreshing HFiles");
}
 

@Override
public MetaDataMutationResult updateIndexState(final List<Mutation> tableMetaData, String parentTableName) throws SQLException {
    byte[][] rowKeyMetadata = new byte[3][];
    SchemaUtil.getVarChars(tableMetaData.get(0).getRow(), rowKeyMetadata);
    byte[] tableKey = SchemaUtil.getTableKey(ByteUtil.EMPTY_BYTE_ARRAY, rowKeyMetadata[PhoenixDatabaseMetaData.SCHEMA_NAME_INDEX], rowKeyMetadata[PhoenixDatabaseMetaData.TABLE_NAME_INDEX]);
    return metaDataCoprocessorExec(tableKey,
            new Batch.Call<MetaDataService, MetaDataResponse>() {
                @Override
                public MetaDataResponse call(MetaDataService instance) throws IOException {
                    ServerRpcController controller = new ServerRpcController();
                    BlockingRpcCallback<MetaDataResponse> rpcCallback =
                            new BlockingRpcCallback<MetaDataResponse>();
                    UpdateIndexStateRequest.Builder builder = UpdateIndexStateRequest.newBuilder();
                    for (Mutation m : tableMetaData) {
                        MutationProto mp = ProtobufUtil.toProto(m);
                        builder.addTableMetadataMutations(mp.toByteString());
                    }
                    instance.updateIndexState(controller, builder.build(), rpcCallback);
                    if(controller.getFailedOn() != null) {
                        throw controller.getFailedOn();
                    }
                    return rpcCallback.get();
                }
            });
}
 

public static void clearMetaDataCache(Connection conn) throws Throwable {
    PhoenixConnection pconn = conn.unwrap(PhoenixConnection.class);
    HTableInterface htable = pconn.getQueryServices().getTable(PhoenixDatabaseMetaData.SYSTEM_CATALOG_NAME_BYTES);
    htable.coprocessorService(MetaDataService.class, HConstants.EMPTY_START_ROW,
        HConstants.EMPTY_END_ROW, new Batch.Call<MetaDataService, ClearCacheResponse>() {
            @Override
            public ClearCacheResponse call(MetaDataService instance) throws IOException {
                ServerRpcController controller = new ServerRpcController();
                BlockingRpcCallback<ClearCacheResponse> rpcCallback =
                        new BlockingRpcCallback<ClearCacheResponse>();
                ClearCacheRequest.Builder builder = ClearCacheRequest.newBuilder();
                instance.clearCache(controller, builder.build(), rpcCallback);
                if(controller.getFailedOn() != null) {
                    throw controller.getFailedOn();
                }
                return rpcCallback.get(); 
            }
          });
}
 

private static Map<byte [], Long> sum(final Table table, final byte [] family,
  final byte [] qualifier, final byte [] start, final byte [] end)
    throws ServiceException, Throwable {
  return table.coprocessorService(ColumnAggregationProtos.ColumnAggregationService.class,
    start, end,
    new Batch.Call<ColumnAggregationProtos.ColumnAggregationService, Long>() {
      @Override
      public Long call(ColumnAggregationProtos.ColumnAggregationService instance)
        throws IOException {
        CoprocessorRpcUtils.BlockingRpcCallback<ColumnAggregationProtos.SumResponse> rpcCallback =
            new CoprocessorRpcUtils.BlockingRpcCallback<>();
        ColumnAggregationProtos.SumRequest.Builder builder =
          ColumnAggregationProtos.SumRequest.newBuilder();
        builder.setFamily(ByteString.copyFrom(family));
        if (qualifier != null && qualifier.length > 0) {
          builder.setQualifier(ByteString.copyFrom(qualifier));
        }
        instance.sum(null, builder.build(), rpcCallback);
        return rpcCallback.get().getSum();
      }
    });
}
 

private Map<byte [], String> hello(final Table table, final String send, final byte [] start,
        final byte [] end) throws ServiceException, Throwable {
  return table.coprocessorService(PingService.class,
      start, end,
      new Batch.Call<PingService, String>() {
        @Override
        public String call(PingService instance) throws IOException {
          CoprocessorRpcUtils.BlockingRpcCallback<HelloResponse> rpcCallback =
            new CoprocessorRpcUtils.BlockingRpcCallback<>();
          HelloRequest.Builder builder = HelloRequest.newBuilder();
          if (send != null) {
            builder.setName(send);
          }
          instance.hello(null, builder.build(), rpcCallback);
          HelloResponse r = rpcCallback.get();
          return r != null && r.hasResponse()? r.getResponse(): null;
        }
      });
}
 

private Map<byte [], String> noop(final Table table, final byte [] start, final byte [] end)
        throws ServiceException, Throwable {
  return table.coprocessorService(PingService.class, start, end,
      new Batch.Call<PingService, String>() {
        @Override
        public String call(PingService instance) throws IOException {
          CoprocessorRpcUtils.BlockingRpcCallback<NoopResponse> rpcCallback =
            new CoprocessorRpcUtils.BlockingRpcCallback<>();
          NoopRequest.Builder builder = NoopRequest.newBuilder();
          instance.noop(null, builder.build(), rpcCallback);
          rpcCallback.get();
          // Looks like null is expected when void.  That is what the test below is looking for
          return null;
        }
      });
}
 

@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback) throws
  IOException, InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  hTable.batchCallback(transactionalizeActions(actions), results, callback);
}
 

@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback) throws
  IOException, InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  hTable.batchCallback(transactionalizeActions(actions), results, callback);
}
 

@Override
public <R> Object[] batchCallback(List<? extends Row> actions, Batch.Callback<R> callback) throws IOException,
  InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  return hTable.batchCallback(transactionalizeActions(actions), callback);
}
 

@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback) throws
  IOException, InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  hTable.batchCallback(transactionalizeActions(actions), results, callback);
}
 

@Override
public <R> Object[] batchCallback(List<? extends Row> actions, Batch.Callback<R> callback) throws IOException,
  InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  return hTable.batchCallback(transactionalizeActions(actions), callback);
}
 

@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback) throws
  IOException, InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  hTable.batchCallback(transactionalizeActions(actions), results, callback);
}
 

@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback) throws
  IOException, InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  hTable.batchCallback(transactionalizeActions(actions), results, callback);
}
 

@Override
public <R> Object[] batchCallback(List<? extends Row> actions, Batch.Callback<R> callback) throws IOException,
  InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  return hTable.batchCallback(transactionalizeActions(actions), callback);
}
 

@Override
public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback) throws
  IOException, InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  hTable.batchCallback(transactionalizeActions(actions), results, callback);
}
 

@Override
public <R> Object[] batchCallback(List<? extends Row> actions, Batch.Callback<R> callback) throws IOException,
  InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  return hTable.batchCallback(transactionalizeActions(actions), callback);
}
 

@Override
public <R> Object[] batchCallback(List<? extends Row> actions, Batch.Callback<R> callback) throws IOException,
  InterruptedException {
  if (tx == null) {
    throw new IOException("Transaction not started");
  }
  return hTable.batchCallback(transactionalizeActions(actions), callback);
}
 

/**
 * {@inheritDoc}
 */
@Override
public <R> void batchCallback(
        final List<? extends Row> actions, final Object[] results, final Batch.Callback<R> callback)
        throws IOException, InterruptedException {
    throw new RuntimeException(this.getClass() + " does NOT implement this method.");
}
 

/**
 * {@inheritDoc}
 */
@Override
public <T extends Service, R> Map<byte[], R> coprocessorService(final Class<T> service,
                                                                byte[] startKey, byte[] endKey, final Batch.Call<T, R> callable)
        throws ServiceException {
    throw new RuntimeException(this.getClass() + " does NOT implement this method.");
}
 

/**
 * {@inheritDoc}
 */
@Override
public <T extends Service, R> void coprocessorService(final Class<T> service,
                                                      byte[] startKey, byte[] endKey, final Batch.Call<T, R> callable,
                                                      final Batch.Callback<R> callback) throws ServiceException {
    throw new RuntimeException(this.getClass() + " does NOT implement this method.");
}
 

/**
 * {@inheritDoc}
 */
@Override
public <R extends Message> void batchCoprocessorService(Descriptors.MethodDescriptor methodDescriptor,
                                                        Message request, byte[] startKey, byte[] endKey, R responsePrototype,
                                                        Batch.Callback<R> callback) throws ServiceException {
    throw new RuntimeException(this.getClass() + " does NOT implement this method.");
}
 

/**
 * Invoke meta data coprocessor with one retry if the key was found to not be in the regions
 * (due to a table split)
 */
private MetaDataMutationResult metaDataCoprocessorExec(byte[] tableKey,
        Batch.Call<MetaDataService, MetaDataResponse> callable) throws SQLException {
    try {
        boolean retried = false;
        while (true) {
            if (retried) {
                connection.relocateRegion(
                    TableName.valueOf(PhoenixDatabaseMetaData.SYSTEM_CATALOG_NAME_BYTES),
                    tableKey);
            }

            HTableInterface ht = this.getTable(PhoenixDatabaseMetaData.SYSTEM_CATALOG_NAME_BYTES);
            try {
                final Map<byte[], MetaDataResponse> results =
                        ht.coprocessorService(MetaDataService.class, tableKey, tableKey, callable);

                assert(results.size() == 1);
                MetaDataResponse result = results.values().iterator().next();
                if (result.getReturnCode() == MetaDataProtos.MutationCode.TABLE_NOT_IN_REGION) {
                    if (retried) return MetaDataMutationResult.constructFromProto(result);
                    retried = true;
                    continue;
                }
                return MetaDataMutationResult.constructFromProto(result);
            } finally {
                Closeables.closeQuietly(ht);
            }
        }
    } catch (IOException e) {
        throw ServerUtil.parseServerException(e);
    } catch (Throwable t) {
        throw new SQLException(t);
    }
}
 

@Override
public MetaDataMutationResult getTable(final PName tenantId, final byte[] schemaBytes, final byte[] tableBytes,
        final long tableTimestamp, final long clientTimestamp) throws SQLException {
    final byte[] tenantIdBytes = tenantId == null ? ByteUtil.EMPTY_BYTE_ARRAY : tenantId.getBytes();
    byte[] tableKey = SchemaUtil.getTableKey(tenantIdBytes, schemaBytes, tableBytes);
    return metaDataCoprocessorExec(tableKey,
        new Batch.Call<MetaDataService, MetaDataResponse>() {
            @Override
            public MetaDataResponse call(MetaDataService instance) throws IOException {
                ServerRpcController controller = new ServerRpcController();
                BlockingRpcCallback<MetaDataResponse> rpcCallback =
                        new BlockingRpcCallback<MetaDataResponse>();
                GetTableRequest.Builder builder = GetTableRequest.newBuilder();
                builder.setTenantId(HBaseZeroCopyByteString.wrap(tenantIdBytes));
                builder.setSchemaName(HBaseZeroCopyByteString.wrap(schemaBytes));
                builder.setTableName(HBaseZeroCopyByteString.wrap(tableBytes));
                builder.setTableTimestamp(tableTimestamp);
                builder.setClientTimestamp(clientTimestamp);

               instance.getTable(controller, builder.build(), rpcCallback);
               if(controller.getFailedOn() != null) {
                   throw controller.getFailedOn();
               }
               return rpcCallback.get();
            }
        });
}
 

@Override
public <R extends Message> void batchCoprocessorService(Descriptors.MethodDescriptor methodDescriptor,
        Message request, byte[] startKey, byte[] endKey, R responsePrototype, Batch.Callback<R> callback)
        throws ServiceException, Throwable {
    throw new NotImplementedException();

}
 

public static List<DataProtos.DataQueryResponse.Row> queryByStartRowAndStopRow(String tableName, String startRow, String stopRow, boolean isIncludeEnd, boolean isSalting) {

        final DataProtos.DataQueryRequest.Builder requestBuilder = DataProtos.DataQueryRequest.newBuilder();
        requestBuilder.setTableName(tableName);
        requestBuilder.setStartRow(startRow);
        requestBuilder.setEndRow(stopRow);
        requestBuilder.setIncluedEnd(isIncludeEnd);
        requestBuilder.setIsSalting(isSalting);
        try {
            HTable table = new HTable(HBaseConfiguration.create(conf), tableName);
            Map<byte[], List<DataProtos.DataQueryResponse.Row>> result = table.coprocessorService(DataProtos.QueryDataService.class, null, null, new Batch.Call<DataProtos.QueryDataService, List<DataProtos.DataQueryResponse.Row>>() {
                public List<DataProtos.DataQueryResponse.Row> call(DataProtos.QueryDataService counter) throws IOException {
                    ServerRpcController controller = new ServerRpcController();
                    BlockingRpcCallback<DataProtos.DataQueryResponse> rpcCallback = new BlockingRpcCallback<>();
                    counter.queryByStartRowAndEndRow(controller, requestBuilder.build(), rpcCallback);
                    DataProtos.DataQueryResponse response = rpcCallback.get();
                    if (controller.failedOnException()) {
                        throw controller.getFailedOn();
                    }
                    return response.getRowListList();
                }
            });
            List<DataProtos.DataQueryResponse.Row> results = new LinkedList<>();
            result.entrySet()
                    .stream()
                    .filter(entry -> null != entry.getValue())
                    .forEach(entry -> results.addAll(entry.getValue()));
            return results;
        } catch (Throwable e) {
            throw new RuntimeException(e);
        }
    }
 

@Test
public void testSingleMethod() throws Throwable {
  try (Table table = util.getConnection().getTable(TEST_TABLE);
      RegionLocator locator = util.getConnection().getRegionLocator(TEST_TABLE)) {
    Map<byte [], String> results = table.coprocessorService(PingService.class,
      null, ROW_A,
      new Batch.Call<PingService, String>() {
        @Override
        public String call(PingService instance) throws IOException {
          CoprocessorRpcUtils.BlockingRpcCallback<PingResponse> rpcCallback =
            new CoprocessorRpcUtils.BlockingRpcCallback<>();
          instance.ping(null, PingRequest.newBuilder().build(), rpcCallback);
          return rpcCallback.get().getPong();
        }
      });
    // Should have gotten results for 1 of the three regions only since we specified
    // rows from 1 region
    assertEquals(1, results.size());
    verifyRegionResults(locator, results, ROW_A);

    final String name = "NAME";
    results = hello(table, name, null, ROW_A);
    // Should have gotten results for 1 of the three regions only since we specified
    // rows from 1 region
    assertEquals(1, results.size());
    verifyRegionResults(locator, results, "Hello, NAME", ROW_A);
  }
}
 

private Map<byte [], String> ping(final Table table, final byte [] start, final byte [] end)
        throws ServiceException, Throwable {
  return table.coprocessorService(PingService.class, start, end,
    new Batch.Call<PingService, String>() {
      @Override
      public String call(PingService instance) throws IOException {
        return doPing(instance);
      }
    });
}
 

public static MetaDataMutationResult updateIndexState(byte[] indexTableKey, long minTimeStamp,
        Table metaTable, PIndexState newState) throws Throwable {
    // Mimic the Put that gets generated by the client on an update of the index state
    Put put = new Put(indexTableKey);
    put.addColumn(PhoenixDatabaseMetaData.TABLE_FAMILY_BYTES, PhoenixDatabaseMetaData.INDEX_STATE_BYTES,
            newState.getSerializedBytes());
    put.addColumn(PhoenixDatabaseMetaData.TABLE_FAMILY_BYTES, PhoenixDatabaseMetaData.INDEX_DISABLE_TIMESTAMP_BYTES,
            PLong.INSTANCE.toBytes(minTimeStamp));
    put.addColumn(PhoenixDatabaseMetaData.TABLE_FAMILY_BYTES, PhoenixDatabaseMetaData.ASYNC_REBUILD_TIMESTAMP_BYTES,
            PLong.INSTANCE.toBytes(0));
    final List<Mutation> tableMetadata = Collections.<Mutation> singletonList(put);

    final Map<byte[], MetaDataResponse> results = metaTable.coprocessorService(MetaDataService.class, indexTableKey,
            indexTableKey, new Batch.Call<MetaDataService, MetaDataResponse>() {
                @Override
                public MetaDataResponse call(MetaDataService instance) throws IOException {
                    ServerRpcController controller = new ServerRpcController();
                    BlockingRpcCallback<MetaDataResponse> rpcCallback = new BlockingRpcCallback<MetaDataResponse>();
                    UpdateIndexStateRequest.Builder builder = UpdateIndexStateRequest.newBuilder();
                    for (Mutation m : tableMetadata) {
                        MutationProto mp = ProtobufUtil.toProto(m);
                        builder.addTableMetadataMutations(mp.toByteString());
                    }
                    builder.setClientVersion(VersionUtil.encodeVersion(PHOENIX_MAJOR_VERSION, PHOENIX_MINOR_VERSION, PHOENIX_PATCH_NUMBER));
                    instance.updateIndexState(controller, builder.build(), rpcCallback);
                    if (controller.getFailedOn() != null) { throw controller.getFailedOn(); }
                    return rpcCallback.get();
                }
            });
    if (results.isEmpty()) { throw new IOException("Didn't get expected result size"); }
    MetaDataResponse tmpResponse = results.values().iterator().next();
    return MetaDataMutationResult.constructFromProto(tmpResponse);
}
 

/**
 * @param connection the Connection instance to use.
 * @param user
 * @return labels, the given user is globally authorized for.
 * @throws Throwable
 */
public static GetAuthsResponse getAuths(Connection connection, final String user)
    throws Throwable {
  try (Table table = connection.getTable(LABELS_TABLE_NAME)) {
    Batch.Call<VisibilityLabelsService, GetAuthsResponse> callable =
        new Batch.Call<VisibilityLabelsService, GetAuthsResponse>() {
      ServerRpcController controller = new ServerRpcController();
      CoprocessorRpcUtils.BlockingRpcCallback<GetAuthsResponse> rpcCallback =
          new CoprocessorRpcUtils.BlockingRpcCallback<>();

      @Override
      public GetAuthsResponse call(VisibilityLabelsService service) throws IOException {
        GetAuthsRequest.Builder getAuthReqBuilder = GetAuthsRequest.newBuilder();
        getAuthReqBuilder.setUser(UnsafeByteOperations.unsafeWrap(Bytes.toBytes(user)));
        service.getAuths(controller, getAuthReqBuilder.build(), rpcCallback);
        GetAuthsResponse response = rpcCallback.get();
        if (controller.failedOnException()) {
          throw controller.getFailedOn();
        }
        return response;
      }
    };
    Map<byte[], GetAuthsResponse> result =
        table.coprocessorService(VisibilityLabelsService.class, HConstants.EMPTY_BYTE_ARRAY,
            HConstants.EMPTY_BYTE_ARRAY, callable);
    return result.values().iterator().next(); // There will be exactly one region for labels
    // table and so one entry in result Map.
  }
}
 

/**
 * Retrieve the list of visibility labels defined in the system.
 * @param connection The Connection instance to use.
 * @param regex  The regular expression to filter which labels are returned.
 * @return labels The list of visibility labels defined in the system.
 * @throws Throwable
 */
public static ListLabelsResponse listLabels(Connection connection, final String regex)
    throws Throwable {
  try (Table table = connection.getTable(LABELS_TABLE_NAME)) {
    Batch.Call<VisibilityLabelsService, ListLabelsResponse> callable =
        new Batch.Call<VisibilityLabelsService, ListLabelsResponse>() {
      ServerRpcController controller = new ServerRpcController();
      CoprocessorRpcUtils.BlockingRpcCallback<ListLabelsResponse> rpcCallback =
          new CoprocessorRpcUtils.BlockingRpcCallback<>();

      @Override
      public ListLabelsResponse call(VisibilityLabelsService service) throws IOException {
        ListLabelsRequest.Builder listAuthLabelsReqBuilder = ListLabelsRequest.newBuilder();
        if (regex != null) {
          // Compile the regex here to catch any regex exception earlier.
          Pattern pattern = Pattern.compile(regex);
          listAuthLabelsReqBuilder.setRegex(pattern.toString());
        }
        service.listLabels(controller, listAuthLabelsReqBuilder.build(), rpcCallback);
        ListLabelsResponse response = rpcCallback.get();
        if (controller.failedOnException()) {
          throw controller.getFailedOn();
        }
        return response;
      }
    };
    Map<byte[], ListLabelsResponse> result =
        table.coprocessorService(VisibilityLabelsService.class, HConstants.EMPTY_BYTE_ARRAY,
            HConstants.EMPTY_BYTE_ARRAY, callable);
    return result.values().iterator().next(); // There will be exactly one region for labels
    // table and so one entry in result Map.
  }
}