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Java library for persisted low latency messaging (Java 8+)
/*
* Copyright 2016-2022 chronicle.software
*
* https://chronicle.software
*
* 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 net.openhft.chronicle.queue.reader;
import net.openhft.chronicle.core.util.Histogram;
import net.openhft.chronicle.queue.ChronicleQueue;
import org.jetbrains.annotations.NotNull;
import java.nio.file.Path;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.function.Supplier;
public interface HistoryReader {
HistoryReader withMessageSink(final Consumer messageSink);
HistoryReader withBasePath(final Path path);
HistoryReader withProgress(boolean p);
HistoryReader withTimeUnit(TimeUnit p);
HistoryReader withHistosByMethod(boolean b);
HistoryReader withIgnore(long ignore);
HistoryReader withMeasurementWindow(long measurementWindow);
HistoryReader withSummaryOutput(int offset);
/**
* set the index to start at
* @param startIndex start index
* @return this
*/
HistoryReader withStartIndex(long startIndex);
ChronicleHistoryReader withHistoSupplier(Supplier histoSupplier);
void execute();
/**
* Read until the end of the queue, accumulating latency histograms.
* Can be called repeatedly and will start where last finished
* @return histograms
*/
Map readChronicle();
void outputData();
/**
* Creates and returns a new history reader that will use
* the queue located at {@link #withBasePath } provided later.
*
* @return a new history reader that will use
* the queue located at {@link #withBasePath } provided later
*/
static HistoryReader create() {
return new ChronicleHistoryReader();
}
/**
* Creates and returns a new history reader that will use
* the provided {@code queueSupplier } to provide the queue.
*
* @return a new history reader that will use
* the provided {@code queueSupplier } to provide the queue.
*/
static HistoryReader create(@NotNull final Supplier extends ChronicleQueue> queueSupplier) {
throw new UnsupportedOperationException("TODO");
}
}