com.google.cloud.bigtable.hbase.adapters.DefaultReadHooks.java Source code

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Here is the source code for com.google.cloud.bigtable.hbase.adapters.DefaultReadHooks.java

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/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed 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 com.google.cloud.bigtable.hbase.adapters;

import com.google.bigtable.v1.ReadRowsRequest;
import com.google.common.base.Function;
import com.google.common.base.Functions;

/**
 * Default implementation of {@link ReadHooks}.
 */
public class DefaultReadHooks implements ReadHooks {
    private Function<ReadRowsRequest, ReadRowsRequest> preSendHook = Functions.identity();

    public void composePreSendHook(Function<ReadRowsRequest, ReadRowsRequest> newHook) {
        preSendHook = Functions.compose(newHook, preSendHook);
    }

    @Override
    public ReadRowsRequest applyPreSendHook(ReadRowsRequest readRowsRequest) {
        return preSendHook.apply(readRowsRequest);
    }
}