wz2cool / local-queue / #41

Committed 02 Feb 2025 03:13PM UTC coverage: 91.958% (+0.2%) from 91.757%

Build # #41

Build Type

push

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Commit Message

use atomic instead of volatile

Run Details

105 of 124 new or added lines in 4 files covered. (84.68%)

2 existing lines in 2 files now uncovered.

606 of 659 relevant lines covered (91.96%)

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91.38

/src/main/java/com/github/wz2cool/localqueue/impl/SimpleConsumer.java

package com.github.wz2cool.localqueue.impl;

import com.github.wz2cool.localqueue.IConsumer;
import com.github.wz2cool.localqueue.event.CloseListener;
import com.github.wz2cool.localqueue.helper.ChronicleQueueHelper;
import com.github.wz2cool.localqueue.model.config.SimpleConsumerConfig;
import com.github.wz2cool.localqueue.model.enums.ConsumeFromWhere;
import com.github.wz2cool.localqueue.model.message.InternalReadMessage;
import com.github.wz2cool.localqueue.model.message.QueueMessage;
import net.openhft.chronicle.core.time.TimeProvider;
import net.openhft.chronicle.queue.ChronicleQueue;
import net.openhft.chronicle.queue.ExcerptTailer;
import net.openhft.chronicle.queue.RollCycle;
import net.openhft.chronicle.queue.impl.single.SingleChronicleQueue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * simple consumer
 *
 * @author frank
 */
public class SimpleConsumer implements IConsumer {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    private final RollCycle defaultRollCycle;
    private final TimeProvider timeProvider;
    private final SimpleConsumerConfig config;
    private final PositionStore positionStore;
    private final SingleChronicleQueue queue;
    // should only call by readCacheExecutor
    private final ExcerptTailer mainTailer;
    private final ExecutorService readCacheExecutor = Executors.newSingleThreadExecutor();
    private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
    private final LinkedBlockingQueue<QueueMessage> messageCache;
    private final ConcurrentLinkedQueue<CloseListener> closeListenerList = new ConcurrentLinkedQueue<>();
    private final AtomicLong ackedReadPosition = new AtomicLong(-1);
    private final AtomicBoolean isReadToCacheRunning = new AtomicBoolean(true);
    private final AtomicBoolean isClosing = new AtomicBoolean(false);
    private final AtomicBoolean isClosed = new AtomicBoolean(false);
    private final Object closeLocker = new Object();
    private final AtomicInteger positionVersion = new AtomicInteger(0);
    private final Lock internalLock = new ReentrantLock();

    /**
     * constructor
     *
     * @param config the config of consumer
     */
    public SimpleConsumer(final SimpleConsumerConfig config) {
        this.config = config;
        this.timeProvider = ChronicleQueueHelper.getTimeProvider(config.getTimeZone());
        this.messageCache = new LinkedBlockingQueue<>(config.getCacheSize());
        this.positionStore = new PositionStore(config.getPositionFile());
        this.defaultRollCycle = ChronicleQueueHelper.getRollCycle(config.getRollCycleType());
        this.queue = ChronicleQueue.singleBuilder(config.getDataDir())
                .timeProvider(timeProvider)
                .rollCycle(defaultRollCycle)
                .build();
        this.mainTailer = initMainTailer();
        startReadToCache();
        scheduler.scheduleAtFixedRate(this::flushPosition, 0, config.getFlushPositionInterval(), TimeUnit.MILLISECONDS);
    }

    @Override
    public synchronized QueueMessage take() throws InterruptedException {
        return this.messageCache.take();
    }

    @Override
    public synchronized List<QueueMessage> batchTake(int maxBatchSize) throws InterruptedException {
        List<QueueMessage> result = new ArrayList<>(maxBatchSize);
        QueueMessage take = this.messageCache.take();
        result.add(take);
        this.messageCache.drainTo(result, maxBatchSize - 1);
        return result;
    }

    @Override
    public synchronized Optional<QueueMessage> take(long timeout, TimeUnit unit) throws InterruptedException {
        QueueMessage message = this.messageCache.poll(timeout, unit);
        return Optional.ofNullable(message);
    }

    @Override
    public synchronized List<QueueMessage> batchTake(int maxBatchSize, long timeout, TimeUnit unit) throws InterruptedException {
        List<QueueMessage> result = new ArrayList<>(maxBatchSize);
        QueueMessage poll = this.messageCache.poll(timeout, unit);
        if (Objects.nonNull(poll)) {
            result.add(poll);
            this.messageCache.drainTo(result, maxBatchSize - 1);
        }
        return result;
    }

    @Override
    public synchronized Optional<QueueMessage> poll() {
        QueueMessage message = this.messageCache.poll();
        return Optional.ofNullable(message);
    }

    @Override
    public synchronized List<QueueMessage> batchPoll(int maxBatchSize) {
        List<QueueMessage> result = new ArrayList<>(maxBatchSize);
        this.messageCache.drainTo(result, maxBatchSize);
        return result;
    }

    @Override
    public synchronized void ack(final QueueMessage message) {
        if (Objects.isNull(message)) {
            return;
        }

        if (message.getPositionVersion() != positionVersion.get()) {
            return;
        }
        ackedReadPosition.set(message.getPosition());
    }

    @Override
    public synchronized void ack(final List<QueueMessage> messages) {
        if (Objects.isNull(messages) || messages.isEmpty()) {
            return;
        }
        QueueMessage lastOne = messages.get(messages.size() - 1);
        if (lastOne.getPositionVersion() != positionVersion.get()) {
            return;
        }
        ackedReadPosition.set(lastOne.getPosition());
    }

    @Override
    public boolean moveToPosition(final long position) {
        logDebug("[moveToPosition] start");
        stopReadToCache();
        try {
            internalLock.lock();
            return moveToPositionInternal(position);
        } finally {
            internalLock.unlock();
            startReadToCache();
            logDebug("[moveToPosition] end");
        }
    }

    @Override
    public boolean moveToTimestamp(final long timestamp) {
        logDebug("[moveToTimestamp] start, timestamp: {}", timestamp);
        stopReadToCache();
        try {
            internalLock.lock();
            Optional<Long> positionOptional = findPosition(timestamp);
            if (!positionOptional.isPresent()) {
                return false;
            }
            Long position = positionOptional.get();
            return moveToPositionInternal(position);
        } finally {
            internalLock.unlock();
            startReadToCache();
            logDebug("[moveToTimestamp] end");
        }
    }

    @Override
    public Optional<QueueMessage> get(final String messageKey) {
        return get(messageKey, 0L, Long.MAX_VALUE);
    }

    @Override
    public Optional<QueueMessage> get(final String messageKey, long searchTimestampStart, long searchTimestampEnd) {
        if (messageKey == null || messageKey.isEmpty()) {
            return Optional.empty();
        }
        try (ExcerptTailer tailer = queue.createTailer()) {
            moveToNearByTimestamp(tailer, searchTimestampStart);
            while (true) {
                // for performance, ignore read content.
                InternalReadMessage internalReadMessage = new InternalReadMessage(true);
                boolean readResult = tailer.readBytes(internalReadMessage);
                if (!readResult) {
                    return Optional.empty();
                }
                if (internalReadMessage.getWriteTime() < searchTimestampStart) {
                    continue;
                }
                if (internalReadMessage.getWriteTime() > searchTimestampEnd) {
                    return Optional.empty();
                }
                boolean moveToResult = tailer.moveToIndex(tailer.lastReadIndex());
                if (!moveToResult) {
                    return Optional.empty();
                }
                internalReadMessage = new InternalReadMessage();
                readResult = tailer.readBytes(internalReadMessage);
                if (!readResult) {
                    return Optional.empty();
                }
                QueueMessage queueMessage = toQueueMessage(internalReadMessage, tailer.lastReadIndex());
                if (Objects.equals(messageKey, queueMessage.getMessageKey())) {
                    return Optional.of(queueMessage);
                }
            }
        }
    }

    private QueueMessage toQueueMessage(final InternalReadMessage internalReadMessage, final long position) {
        return new QueueMessage(
                internalReadMessage.getMessageKey(),
                positionVersion.get(),
                position,
                internalReadMessage.getContent(),
                internalReadMessage.getWriteTime());
    }

    private boolean moveToPositionInternal(final long position) {
        return CompletableFuture.supplyAsync(() -> {
            try {
                logDebug("[moveToPositionInternal] start, position: {}", position);
                boolean moveToResult = mainTailer.moveToIndex(position);
                if (moveToResult) {
                    positionVersion.incrementAndGet();
                    messageCache.clear();
                    ackedReadPosition.set(position);
                }
                return moveToResult;
            } finally {
                logDebug("[moveToPositionInternal] end");
            }
        }, this.readCacheExecutor).join();
    }

    private Optional<Long> findPosition(final long timestamp) {
        logDebug("[findPosition] start, timestamp: {}", timestamp);
        try (ExcerptTailer tailer = queue.createTailer()) {
            moveToNearByTimestamp(tailer, timestamp);
            while (true) {
                InternalReadMessage internalReadMessage = new InternalReadMessage(true);
                boolean resultResult = tailer.readBytes(internalReadMessage);
                if (resultResult) {
                    if (internalReadMessage.getWriteTime() >= timestamp) {
                        return Optional.of(tailer.lastReadIndex());
                    }
                } else {
                    return Optional.empty();
                }
            }
        } finally {
            logDebug("[findPosition] end");
        }
    }

    public long getAckedReadPosition() {
        return ackedReadPosition.get();
    }

    @Override
    public boolean isClosed() {
        return isClosed.get();
    }

    private void stopReadToCache() {
        isReadToCacheRunning.set(false);
    }

    private void startReadToCache() {
        this.isReadToCacheRunning.set(true);
        readCacheExecutor.execute(this::readToCache);
    }

    private void readToCache() {
        try {
            logDebug("[readToCache] start");
            internalLock.lock();
            long pullInterval = config.getPullInterval();
            long fillCacheInterval = config.getFillCacheInterval();
            while (isReadToCacheRunning.get() && !isClosing.get()) {
                try {
                    InternalReadMessage internalReadMessage = new InternalReadMessage();
                    boolean readResult = mainTailer.readBytes(internalReadMessage);
                    if (!readResult) {
                        TimeUnit.MILLISECONDS.sleep(pullInterval);
                        continue;
                    }
                    long lastedReadIndex = mainTailer.lastReadIndex();
                    QueueMessage queueMessage = toQueueMessage(internalReadMessage, lastedReadIndex);
                    boolean offerResult = this.messageCache.offer(queueMessage, fillCacheInterval, TimeUnit.MILLISECONDS);
                    if (!offerResult) {
                        // if offer failed, move to last read position
                        mainTailer.moveToIndex(lastedReadIndex);
                    }
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
            }
        } finally {
            internalLock.unlock();
            logDebug("[readToCache] end");
        }
    }

    private ExcerptTailer initMainTailer() {
        return CompletableFuture.supplyAsync(this::initMainTailerInternal, this.readCacheExecutor).join();
    }

    private ExcerptTailer initMainTailerInternal() {
        try {
            logDebug("[initExcerptTailerInternal] start");
            ExcerptTailer tailer = queue.createTailer();
            Optional<Long> lastPositionOptional = getLastPosition();
            if (lastPositionOptional.isPresent()) {
                Long position = lastPositionOptional.get();
                long beginPosition = position + 1;
                tailer.moveToIndex(beginPosition);
                logDebug("[initExcerptTailerInternal] find last position and move to position: {}", beginPosition);
            } else {
                ConsumeFromWhere consumeFromWhere = this.config.getConsumeFromWhere();
                if (consumeFromWhere == ConsumeFromWhere.LAST) {
                    tailer.toEnd();
                    logDebug("[initExcerptTailerInternal] move to end");
                } else if (consumeFromWhere == ConsumeFromWhere.FIRST) {
                    tailer.toStart();
                    logDebug("[initExcerptTailerInternal] move to start");
                }
            }
            return tailer;
        } finally {
            logDebug("[initExcerptTailer] end");
        }

    }

    /// region position

    private void flushPosition() {
        if (ackedReadPosition.get() != -1) {
            setLastPosition(this.ackedReadPosition.get());
        }
    }

    private Optional<Long> getLastPosition() {
        return positionStore.get(config.getConsumerId());
    }

    private void setLastPosition(long position) {
        positionStore.put(config.getConsumerId(), position);
    }

    /// endregion

    @Override
    public void close() {
        synchronized (closeLocker) {
            try {
                logDebug("[close] start");
                if (isClosing.get()) {
                    logDebug("[close] is closing");
                    return;
                }
                isClosing.set(true);
                this.internalLock.lock();
                stopReadToCache();
                this.internalLock.unlock();
                if (!positionStore.isClosed()) {
                    positionStore.close();
                }
                scheduler.shutdown();
                readCacheExecutor.shutdown();
                try {
                    if (!scheduler.awaitTermination(1, TimeUnit.SECONDS)) {
                        scheduler.shutdownNow();
                    }
                    if (!readCacheExecutor.awaitTermination(1, TimeUnit.SECONDS)) {
                        readCacheExecutor.shutdownNow();
                    }
                } catch (InterruptedException e) {
                    scheduler.shutdownNow();
                    readCacheExecutor.shutdownNow();
                    Thread.currentThread().interrupt();
                }
                if (!queue.isClosed()) {
                    queue.close();
                }

                for (CloseListener closeListener : closeListenerList) {
                    closeListener.onClose();
                }
                isClosed.set(true);
            } finally {
                logDebug("[close] end");
            }
        }
    }

    private void moveToNearByTimestamp(ExcerptTailer tailer, long timestamp) {
        int expectedCycle = ChronicleQueueHelper.cycle(defaultRollCycle, timeProvider, timestamp);
        int currentCycle = tailer.cycle();
        if (currentCycle != expectedCycle) {
            boolean moveToCycleResult = tailer.moveToCycle(expectedCycle);
            logDebug("[moveToNearByTimestamp] moveToCycleResult: {}", moveToCycleResult);
        }
    }

    @Override
    public void addCloseListener(CloseListener listener) {
        closeListenerList.add(listener);
    }

    // region logger

    private void logDebug(String format) {
        if (logger.isDebugEnabled()) {
            logger.debug(format);
        }
    }

    private void logDebug(String format, Object arg) {
        if (logger.isDebugEnabled()) {
            logger.debug(format, arg);
        }
    }

    // endregion
}

1	package com.github.wz2cool.localqueue.impl;
2
3	import com.github.wz2cool.localqueue.IConsumer;
4	import com.github.wz2cool.localqueue.event.CloseListener;
5	import com.github.wz2cool.localqueue.helper.ChronicleQueueHelper;
6	import com.github.wz2cool.localqueue.model.config.SimpleConsumerConfig;
7	import com.github.wz2cool.localqueue.model.enums.ConsumeFromWhere;
8	import com.github.wz2cool.localqueue.model.message.InternalReadMessage;
9	import com.github.wz2cool.localqueue.model.message.QueueMessage;
10	import net.openhft.chronicle.core.time.TimeProvider;
11	import net.openhft.chronicle.queue.ChronicleQueue;
12	import net.openhft.chronicle.queue.ExcerptTailer;
13	import net.openhft.chronicle.queue.RollCycle;
14	import net.openhft.chronicle.queue.impl.single.SingleChronicleQueue;
15	import org.slf4j.Logger;
16	import org.slf4j.LoggerFactory;
17
18	import java.util.ArrayList;
19	import java.util.List;
20	import java.util.Objects;
21	import java.util.Optional;
22	import java.util.concurrent.*;
23	import java.util.concurrent.atomic.AtomicBoolean;
24	import java.util.concurrent.atomic.AtomicInteger;
25	import java.util.concurrent.atomic.AtomicLong;
26	import java.util.concurrent.locks.Lock;
27	import java.util.concurrent.locks.ReentrantLock;
28
29	/**
30	* simple consumer
31	*
32	* @author frank
33	*/
34	public class SimpleConsumer implements IConsumer {
35
36	private final Logger logger = LoggerFactory.getLogger(this.getClass());	1✔
37	private final RollCycle defaultRollCycle;
38	private final TimeProvider timeProvider;
39	private final SimpleConsumerConfig config;
40	private final PositionStore positionStore;
41	private final SingleChronicleQueue queue;
42	// should only call by readCacheExecutor
43	private final ExcerptTailer mainTailer;
44	private final ExecutorService readCacheExecutor = Executors.newSingleThreadExecutor();	1✔
45	private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);	1✔
46	private final LinkedBlockingQueue<QueueMessage> messageCache;
47	private final ConcurrentLinkedQueue<CloseListener> closeListenerList = new ConcurrentLinkedQueue<>();	1✔
48	private final AtomicLong ackedReadPosition = new AtomicLong(-1);	1✔
49	private final AtomicBoolean isReadToCacheRunning = new AtomicBoolean(true);	1✔
50	private final AtomicBoolean isClosing = new AtomicBoolean(false);	1✔
51	private final AtomicBoolean isClosed = new AtomicBoolean(false);	1✔
52	private final Object closeLocker = new Object();	1✔
53	private final AtomicInteger positionVersion = new AtomicInteger(0);	1✔
54	private final Lock internalLock = new ReentrantLock();	1✔
55
56	/**
57	* constructor
58	*
59	* @param config the config of consumer
60	*/
61	public SimpleConsumer(final SimpleConsumerConfig config) {	1✔
62	this.config = config;	1✔
63	this.timeProvider = ChronicleQueueHelper.getTimeProvider(config.getTimeZone());	1✔
64	this.messageCache = new LinkedBlockingQueue<>(config.getCacheSize());	1✔
65	this.positionStore = new PositionStore(config.getPositionFile());	1✔
66	this.defaultRollCycle = ChronicleQueueHelper.getRollCycle(config.getRollCycleType());	1✔
67	this.queue = ChronicleQueue.singleBuilder(config.getDataDir())	1✔
68	.timeProvider(timeProvider)	1✔
69	.rollCycle(defaultRollCycle)	1✔
70	.build();	1✔
71	this.mainTailer = initMainTailer();	1✔
72	startReadToCache();	1✔
73	scheduler.scheduleAtFixedRate(this::flushPosition, 0, config.getFlushPositionInterval(), TimeUnit.MILLISECONDS);	1✔
74	}	1✔
75
76	@Override
77	public synchronized QueueMessage take() throws InterruptedException {
78	return this.messageCache.take();	1✔
79	}
80
81	@Override
82	public synchronized List<QueueMessage> batchTake(int maxBatchSize) throws InterruptedException {
83	List<QueueMessage> result = new ArrayList<>(maxBatchSize);	1✔
84	QueueMessage take = this.messageCache.take();	1✔
85	result.add(take);	1✔
86	this.messageCache.drainTo(result, maxBatchSize - 1);	1✔
87	return result;	1✔
88	}
89
90	@Override
91	public synchronized Optional<QueueMessage> take(long timeout, TimeUnit unit) throws InterruptedException {
92	QueueMessage message = this.messageCache.poll(timeout, unit);	1✔
93	return Optional.ofNullable(message);	1✔
94	}
95
96	@Override
97	public synchronized List<QueueMessage> batchTake(int maxBatchSize, long timeout, TimeUnit unit) throws InterruptedException {
98	List<QueueMessage> result = new ArrayList<>(maxBatchSize);	1✔
99	QueueMessage poll = this.messageCache.poll(timeout, unit);	1✔
100	if (Objects.nonNull(poll)) {	1✔
101	result.add(poll);	1✔
102	this.messageCache.drainTo(result, maxBatchSize - 1);	1✔
103	}
104	return result;	1✔
105	}
106
107	@Override
108	public synchronized Optional<QueueMessage> poll() {
109	QueueMessage message = this.messageCache.poll();	1✔
110	return Optional.ofNullable(message);	1✔
111	}
112
113	@Override
114	public synchronized List<QueueMessage> batchPoll(int maxBatchSize) {
115	List<QueueMessage> result = new ArrayList<>(maxBatchSize);	1✔
116	this.messageCache.drainTo(result, maxBatchSize);	1✔
117	return result;	1✔
118	}
119
120	@Override
121	public synchronized void ack(final QueueMessage message) {
122	if (Objects.isNull(message)) {	1✔
123	return;	1✔
124	}
125
126	if (message.getPositionVersion() != positionVersion.get()) {	1✔
127	return;	×
128	}
129	ackedReadPosition.set(message.getPosition());	1✔
130	}	1✔
131
132	@Override
133	public synchronized void ack(final List<QueueMessage> messages) {
134	if (Objects.isNull(messages) \|\| messages.isEmpty()) {	1✔
135	return;	1✔
136	}
137	QueueMessage lastOne = messages.get(messages.size() - 1);	1✔
138	if (lastOne.getPositionVersion() != positionVersion.get()) {	1✔
139	return;	×
140	}
141	ackedReadPosition.set(lastOne.getPosition());	1✔
142	}	1✔
143
144	@Override
145	public boolean moveToPosition(final long position) {
146	logDebug("[moveToPosition] start");	1✔
147	stopReadToCache();	1✔
148	try {
149	internalLock.lock();	1✔
150	return moveToPositionInternal(position);	1✔
151	} finally {
152	internalLock.unlock();	1✔
153	startReadToCache();	1✔
154	logDebug("[moveToPosition] end");	1✔
155	}	×
156	}
157
158	@Override
159	public boolean moveToTimestamp(final long timestamp) {
160	logDebug("[moveToTimestamp] start, timestamp: {}", timestamp);	1✔
161	stopReadToCache();	1✔
162	try {
163	internalLock.lock();	1✔
164	Optional<Long> positionOptional = findPosition(timestamp);	1✔
165	if (!positionOptional.isPresent()) {	1✔
166	return false;	1✔
167	}
168	Long position = positionOptional.get();	1✔
169	return moveToPositionInternal(position);	1✔
170	} finally {
171	internalLock.unlock();	1✔
172	startReadToCache();	1✔
173	logDebug("[moveToTimestamp] end");	1✔
174	}	×
175	}
176
177	@Override
178	public Optional<QueueMessage> get(final String messageKey) {
179	return get(messageKey, 0L, Long.MAX_VALUE);	1✔
180	}
181
182	@Override
183	public Optional<QueueMessage> get(final String messageKey, long searchTimestampStart, long searchTimestampEnd) {
184	if (messageKey == null \|\| messageKey.isEmpty()) {	1✔
185	return Optional.empty();	1✔
186	}
187	try (ExcerptTailer tailer = queue.createTailer()) {	1✔
188	moveToNearByTimestamp(tailer, searchTimestampStart);	1✔
189	while (true) {
190	// for performance, ignore read content.
191	InternalReadMessage internalReadMessage = new InternalReadMessage(true);	1✔
192	boolean readResult = tailer.readBytes(internalReadMessage);	1✔
193	if (!readResult) {	1✔
194	return Optional.empty();	1✔
195	}
196	if (internalReadMessage.getWriteTime() < searchTimestampStart) {	1✔
197	continue;	1✔
198	}
199	if (internalReadMessage.getWriteTime() > searchTimestampEnd) {	1✔
200	return Optional.empty();	×
201	}
202	boolean moveToResult = tailer.moveToIndex(tailer.lastReadIndex());	1✔
203	if (!moveToResult) {	1✔
204	return Optional.empty();	×
205	}
206	internalReadMessage = new InternalReadMessage();	1✔
207	readResult = tailer.readBytes(internalReadMessage);	1✔
208	if (!readResult) {	1✔
209	return Optional.empty();	×
210	}
211	QueueMessage queueMessage = toQueueMessage(internalReadMessage, tailer.lastReadIndex());	1✔
212	if (Objects.equals(messageKey, queueMessage.getMessageKey())) {	1✔
213	return Optional.of(queueMessage);	1✔
214	}
215	}	1✔
216	}	1✔
217	}
218
219	private QueueMessage toQueueMessage(final InternalReadMessage internalReadMessage, final long position) {
220	return new QueueMessage(	1✔
221	internalReadMessage.getMessageKey(),	1✔
222	positionVersion.get(),	1✔
223	position,
224	internalReadMessage.getContent(),	1✔
225	internalReadMessage.getWriteTime());	1✔
226	}
227
228	private boolean moveToPositionInternal(final long position) {
229	return CompletableFuture.supplyAsync(() -> {	1✔
230	try {
231	logDebug("[moveToPositionInternal] start, position: {}", position);	1✔
232	boolean moveToResult = mainTailer.moveToIndex(position);	1✔
233	if (moveToResult) {	1✔
234	positionVersion.incrementAndGet();	1✔
235	messageCache.clear();	1✔
236	ackedReadPosition.set(position);	1✔
237	}
238	return moveToResult;	1✔
239	} finally {
240	logDebug("[moveToPositionInternal] end");	1✔
241	}	×
242	}, this.readCacheExecutor).join();	1✔
243	}
244
245	private Optional<Long> findPosition(final long timestamp) {
246	logDebug("[findPosition] start, timestamp: {}", timestamp);	1✔
247	try (ExcerptTailer tailer = queue.createTailer()) {	1✔
248	moveToNearByTimestamp(tailer, timestamp);	1✔
249	while (true) {
250	InternalReadMessage internalReadMessage = new InternalReadMessage(true);	1✔
251	boolean resultResult = tailer.readBytes(internalReadMessage);	1✔
252	if (resultResult) {	1✔
253	if (internalReadMessage.getWriteTime() >= timestamp) {	1✔
254	return Optional.of(tailer.lastReadIndex());	1✔
255	}
256	} else {
257	return Optional.empty();	1✔
258	}
259	}	1✔
260	} finally {	1✔
261	logDebug("[findPosition] end");	1✔
262	}	×
263	}
264
265	public long getAckedReadPosition() {
266	return ackedReadPosition.get();	1✔
267	}
268
269	@Override
270	public boolean isClosed() {
271	return isClosed.get();	1✔
272	}
273
274	private void stopReadToCache() {
275	isReadToCacheRunning.set(false);	1✔
276	}	1✔
277
278	private void startReadToCache() {
279	this.isReadToCacheRunning.set(true);	1✔
280	readCacheExecutor.execute(this::readToCache);	1✔
281	}	1✔
282
283	private void readToCache() {
284	try {
285	logDebug("[readToCache] start");	1✔
286	internalLock.lock();	1✔
287	long pullInterval = config.getPullInterval();	1✔
288	long fillCacheInterval = config.getFillCacheInterval();	1✔
289	while (isReadToCacheRunning.get() && !isClosing.get()) {	1✔
290	try {
291	InternalReadMessage internalReadMessage = new InternalReadMessage();	1✔
292	boolean readResult = mainTailer.readBytes(internalReadMessage);	1✔
293	if (!readResult) {	1✔
294	TimeUnit.MILLISECONDS.sleep(pullInterval);	1✔
295	continue;	1✔
296	}
297	long lastedReadIndex = mainTailer.lastReadIndex();	1✔
298	QueueMessage queueMessage = toQueueMessage(internalReadMessage, lastedReadIndex);	1✔
299	boolean offerResult = this.messageCache.offer(queueMessage, fillCacheInterval, TimeUnit.MILLISECONDS);	1✔
300	if (!offerResult) {	1✔
301	// if offer failed, move to last read position
302	mainTailer.moveToIndex(lastedReadIndex);	1✔
303	}
304	} catch (InterruptedException e) {	×
305	Thread.currentThread().interrupt();	×
306	}	1✔
307	}
308	} finally {
309	internalLock.unlock();	1✔
310	logDebug("[readToCache] end");	1✔
311	}	1✔
312	}	1✔
313
314	private ExcerptTailer initMainTailer() {
315	return CompletableFuture.supplyAsync(this::initMainTailerInternal, this.readCacheExecutor).join();	1✔
316	}
317
318	private ExcerptTailer initMainTailerInternal() {
319	try {
320	logDebug("[initExcerptTailerInternal] start");	1✔
321	ExcerptTailer tailer = queue.createTailer();	1✔
322	Optional<Long> lastPositionOptional = getLastPosition();	1✔
323	if (lastPositionOptional.isPresent()) {	1✔
324	Long position = lastPositionOptional.get();	1✔
325	long beginPosition = position + 1;	1✔
326	tailer.moveToIndex(beginPosition);	1✔
327	logDebug("[initExcerptTailerInternal] find last position and move to position: {}", beginPosition);	1✔
328	} else {	1✔
329	ConsumeFromWhere consumeFromWhere = this.config.getConsumeFromWhere();	1✔
330	if (consumeFromWhere == ConsumeFromWhere.LAST) {	1✔
331	tailer.toEnd();	1✔
332	logDebug("[initExcerptTailerInternal] move to end");	1✔
333	} else if (consumeFromWhere == ConsumeFromWhere.FIRST) {	1✔
334	tailer.toStart();	1✔
335	logDebug("[initExcerptTailerInternal] move to start");	1✔
336	}
337	}
338	return tailer;	1✔
339	} finally {
340	logDebug("[initExcerptTailer] end");	1✔
341	}	×
342
343	}
344
345	/// region position
346
347	private void flushPosition() {
348	if (ackedReadPosition.get() != -1) {	1✔
349	setLastPosition(this.ackedReadPosition.get());	1✔
350	}
351	}	1✔
352
353	private Optional<Long> getLastPosition() {
354	return positionStore.get(config.getConsumerId());	1✔
355	}
356
357	private void setLastPosition(long position) {
358	positionStore.put(config.getConsumerId(), position);	1✔
359	}	1✔
360
361	/// endregion
362
363	@Override
364	public void close() {
365	synchronized (closeLocker) {	1✔
366	try {
367	logDebug("[close] start");	1✔
368	if (isClosing.get()) {	1✔
369	logDebug("[close] is closing");	1✔
370	return;	1✔
371	}
372	isClosing.set(true);	1✔
373	this.internalLock.lock();	1✔
374	stopReadToCache();	1✔
375	this.internalLock.unlock();	1✔
376	if (!positionStore.isClosed()) {	1✔
377	positionStore.close();	1✔
378	}
379	scheduler.shutdown();	1✔
380	readCacheExecutor.shutdown();	1✔
381	try {
382	if (!scheduler.awaitTermination(1, TimeUnit.SECONDS)) {	1✔
NEW 383	scheduler.shutdownNow();	×
384	}
385	if (!readCacheExecutor.awaitTermination(1, TimeUnit.SECONDS)) {	1✔
NEW 386	readCacheExecutor.shutdownNow();	×
387	}
NEW 388	} catch (InterruptedException e) {	×
NEW 389	scheduler.shutdownNow();	×
UNCOV 390	readCacheExecutor.shutdownNow();	×
NEW 391	Thread.currentThread().interrupt();	×
392	}	1✔
393	if (!queue.isClosed()) {	1✔
394	queue.close();	1✔
395	}
396
397	for (CloseListener closeListener : closeListenerList) {	1✔
398	closeListener.onClose();	1✔
399	}	1✔
400	isClosed.set(true);	1✔
401	} finally {
402	logDebug("[close] end");	1✔
403	}	1✔
404	}	1✔
405	}	1✔
406
407	private void moveToNearByTimestamp(ExcerptTailer tailer, long timestamp) {
408	int expectedCycle = ChronicleQueueHelper.cycle(defaultRollCycle, timeProvider, timestamp);	1✔
409	int currentCycle = tailer.cycle();	1✔
410	if (currentCycle != expectedCycle) {	1✔
411	boolean moveToCycleResult = tailer.moveToCycle(expectedCycle);	1✔
412	logDebug("[moveToNearByTimestamp] moveToCycleResult: {}", moveToCycleResult);	1✔
413	}
414	}	1✔
415
416	@Override
417	public void addCloseListener(CloseListener listener) {
418	closeListenerList.add(listener);	1✔
419	}	1✔
420
421	// region logger
422
423	private void logDebug(String format) {
424	if (logger.isDebugEnabled()) {	1✔
425	logger.debug(format);	×
426	}
427	}	1✔
428
429	private void logDebug(String format, Object arg) {
430	if (logger.isDebugEnabled()) {	1✔
431	logger.debug(format, arg);	×
432	}
433	}	1✔
434
435	// endregion
436	}

wz2cool / local-queue / #41

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