/*
* Copyright 2015-present Facebook, Inc.
*
* 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.facebook.buck.util.network;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.Optional;
/** Implemented by classes providing the functionality to upload log data in batches. */
public interface BatchingLogger {
/**
* @param logLine data to upload.
* @return {@link Optional#empty()} if the data has merely been buffered, a {@link
* ListenableFuture} representing the upload otherwise.
*/
Optional<ListenableFuture<Void>> log(String logLine);
/**
* Signals to upload whatever remaining information is buffered.
*
* @return future representing the forced upload.
*/
ListenableFuture<Void> forceFlush();
}