Package com.alibaba.rocketmq.store

Examples of com.alibaba.rocketmq.store.MapedFile

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    public IndexFile(final String fileName, final int hashSlotNum, final int indexNum,
            final long endPhyOffset, final long endTimestamp) throws IOException {
        int fileTotalSize =
                IndexHeader.INDEX_HEADER_SIZE + (hashSlotNum * HASH_SLOT_SIZE) + (indexNum * INDEX_SIZE);
        this.mapedFile = new MapedFile(fileName, fileTotalSize);
        this.fileChannel = this.mapedFile.getFileChannel();
        this.mappedByteBuffer = this.mapedFile.getMappedByteBuffer();
        this.hashSlotNum = hashSlotNum;
        this.indexNum = indexNum;

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    public IndexFile(final String fileName, final int hashSlotNum, final int indexNum,
            final long endPhyOffset, final long endTimestamp) throws IOException {
        int fileTotalSize =
                IndexHeader.INDEX_HEADER_SIZE + (hashSlotNum * HASH_SLOT_SIZE) + (indexNum * INDEX_SIZE);
        this.mapedFile = new MapedFile(fileName, fileTotalSize);
        this.fileChannel = this.mapedFile.getFileChannel();
        this.mappedByteBuffer = this.mapedFile.getMappedByteBuffer();
        this.hashSlotNum = hashSlotNum;
        this.indexNum = indexNum;

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            final long clOffset,//
            final int size,//
            final int timestamp,//
            final int groupHashCode//
    ) {
        MapedFile mapedFile = this.tranStateTable.getLastMapedFile();
        if (null == mapedFile) {
            log.error("appendPreparedTransaction: create mapedfile error.");
            return false;
        }

        // 首次创建，加入定时任务中
        if (0 == mapedFile.getWrotePostion()) {
            this.addTimerTask(mapedFile);
        }

        this.byteBufferAppend.position(0);
        this.byteBufferAppend.limit(TSStoreUnitSize);

        // Commit Log Offset
        this.byteBufferAppend.putLong(clOffset);
        // Message Size
        this.byteBufferAppend.putInt(size);
        // Timestamp
        this.byteBufferAppend.putInt(timestamp);
        // Producer Group Hashcode
        this.byteBufferAppend.putInt(groupHashCode);
        // Transaction State
        this.byteBufferAppend.putInt(MessageSysFlag.TransactionPreparedType);

        return mapedFile.appendMessage(this.byteBufferAppend.array());
    }
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            int index = mapedFiles.size() - 3;
            if (index < 0)
                index = 0;

            int mapedFileSizeLogics = this.tranStateTable.getMapedFileSize();
            MapedFile mapedFile = mapedFiles.get(index);
            ByteBuffer byteBuffer = mapedFile.sliceByteBuffer();
            long processOffset = mapedFile.getFileFromOffset();
            long mapedFileOffset = 0;
            while (true) {
                for (int i = 0; i < mapedFileSizeLogics; i += TSStoreUnitSize) {

                    final long clOffset_read = byteBuffer.getLong();
                    final int size_read = byteBuffer.getInt();
                    final int timestamp_read = byteBuffer.getInt();
                    final int groupHashCode_read = byteBuffer.getInt();
                    final int state_read = byteBuffer.getInt();

                    boolean stateOK = false;
                    switch (state_read) {
                    case MessageSysFlag.TransactionPreparedType:
                    case MessageSysFlag.TransactionCommitType:
                    case MessageSysFlag.TransactionRollbackType:
                        stateOK = true;
                        break;
                    default:
                        break;
                    }

                    // 说明当前存储单元有效
                    // TODO 这样判断有效是否合理？
                    if (clOffset_read >= 0 && size_read > 0 && stateOK) {
                        mapedFileOffset = i + TSStoreUnitSize;
                    }
                    else {
                        log.info("recover current transaction state table file over,  "
                                + mapedFile.getFileName() + " " + clOffset_read + " " + size_read + " "
                                + timestamp_read);
                        break;
                    }
                }

                // 走到文件末尾，切换至下一个文件
                if (mapedFileOffset == mapedFileSizeLogics) {
                    index++;
                    if (index >= mapedFiles.size()) {
                        // 当前条件分支不可能发生
                        log.info("recover last transaction state table file over, last maped file "
                                + mapedFile.getFileName());
                        break;
                    }
                    else {
                        mapedFile = mapedFiles.get(index);
                        byteBuffer = mapedFile.sliceByteBuffer();
                        processOffset = mapedFile.getFileFromOffset();
                        mapedFileOffset = 0;
                        log.info("recover next transaction state table file, " + mapedFile.getFileName());
                    }
                }
                else {
                    log.info("recover current transaction state table queue over " + mapedFile.getFileName()
                            + " " + (processOffset + mapedFileOffset));
                    break;
                }
            }
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    private SelectMapedBufferResult findTransactionBuffer(final long tsOffset) {
        final int mapedFileSize =
                this.defaultMessageStore.getMessageStoreConfig().getTranStateTableMapedFileSize();
        final long offset = tsOffset * TSStoreUnitSize;
        MapedFile mapedFile = this.tranStateTable.findMapedFileByOffset(offset);
        if (mapedFile != null) {
            SelectMapedBufferResult result = mapedFile.selectMapedBuffer((int) (offset % mapedFileSize));
            return result;
        }

        return null;
    }
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    public IndexFile(final String fileName, final int hashSlotNum, final int indexNum,
            final long endPhyOffset, final long endTimestamp) throws IOException {
        int fileTotalSize =
                IndexHeader.INDEX_HEADER_SIZE + (hashSlotNum * HASH_SLOT_SIZE) + (indexNum * INDEX_SIZE);
        this.mapedFile = new MapedFile(fileName, fileTotalSize);
        this.fileChannel = this.mapedFile.getFileChannel();
        this.mappedByteBuffer = this.mapedFile.getMappedByteBuffer();
        this.hashSlotNum = hashSlotNum;
        this.indexNum = indexNum;

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            final long clOffset,//
            final int size,//
            final int timestamp,//
            final int groupHashCode//
    ) {
        MapedFile mapedFile = this.tranStateTable.getLastMapedFile();
        if (null == mapedFile) {
            log.error("appendPreparedTransaction: create mapedfile error.");
            return false;
        }

        // 首次创建，加入定时任务中
        if (0 == mapedFile.getWrotePostion()) {
            this.addTimerTask(mapedFile);
        }

        this.byteBufferAppend.position(0);
        this.byteBufferAppend.limit(TSStoreUnitSize);

        // Commit Log Offset
        this.byteBufferAppend.putLong(clOffset);
        // Message Size
        this.byteBufferAppend.putInt(size);
        // Timestamp
        this.byteBufferAppend.putInt(timestamp);
        // Producer Group Hashcode
        this.byteBufferAppend.putInt(groupHashCode);
        // Transaction State
        this.byteBufferAppend.putInt(MessageSysFlag.TransactionPreparedType);

        return mapedFile.appendMessage(this.byteBufferAppend.array());
    }
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            int index = mapedFiles.size() - 3;
            if (index < 0)
                index = 0;

            int mapedFileSizeLogics = this.tranStateTable.getMapedFileSize();
            MapedFile mapedFile = mapedFiles.get(index);
            ByteBuffer byteBuffer = mapedFile.sliceByteBuffer();
            long processOffset = mapedFile.getFileFromOffset();
            long mapedFileOffset = 0;
            while (true) {
                for (int i = 0; i < mapedFileSizeLogics; i += TSStoreUnitSize) {

                    final long clOffset_read = byteBuffer.getLong();
                    final int size_read = byteBuffer.getInt();
                    final int timestamp_read = byteBuffer.getInt();
                    final int groupHashCode_read = byteBuffer.getInt();
                    final int state_read = byteBuffer.getInt();

                    boolean stateOK = false;
                    switch (state_read) {
                    case MessageSysFlag.TransactionPreparedType:
                    case MessageSysFlag.TransactionCommitType:
                    case MessageSysFlag.TransactionRollbackType:
                        stateOK = true;
                        break;
                    default:
                        break;
                    }

                    // 说明当前存储单元有效
                    // TODO 这样判断有效是否合理？
                    if (clOffset_read >= 0 && size_read > 0 && stateOK) {
                        mapedFileOffset = i + TSStoreUnitSize;
                    }
                    else {
                        log.info("recover current transaction state table file over,  "
                                + mapedFile.getFileName() + " " + clOffset_read + " " + size_read + " "
                                + timestamp_read);
                        break;
                    }
                }

                // 走到文件末尾，切换至下一个文件
                if (mapedFileOffset == mapedFileSizeLogics) {
                    index++;
                    if (index >= mapedFiles.size()) {
                        // 当前条件分支不可能发生
                        log.info("recover last transaction state table file over, last maped file "
                                + mapedFile.getFileName());
                        break;
                    }
                    else {
                        mapedFile = mapedFiles.get(index);
                        byteBuffer = mapedFile.sliceByteBuffer();
                        processOffset = mapedFile.getFileFromOffset();
                        mapedFileOffset = 0;
                        log.info("recover next transaction state table file, " + mapedFile.getFileName());
                    }
                }
                else {
                    log.info("recover current transaction state table queue over " + mapedFile.getFileName()
                            + " " + (processOffset + mapedFileOffset));
                    break;
                }
            }
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    private SelectMapedBufferResult findTransactionBuffer(final long tsOffset) {
        final int mapedFileSize =
                this.defaultMessageStore.getMessageStoreConfig().getTranStateTableMapedFileSize();
        final long offset = tsOffset * TSStoreUnitSize;
        MapedFile mapedFile = this.tranStateTable.findMapedFileByOffset(offset);
        if (mapedFile != null) {
            SelectMapedBufferResult result = mapedFile.selectMapedBuffer((int) (offset % mapedFileSize));
            return result;
        }

        return null;
    }
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Related Classes of com.alibaba.rocketmq.store.MapedFile

  • com.alibaba.rocketmq.store.index.IndexFile
  • com.alibaba.rocketmq.store.transaction.TransactionStateService
  • java.lang.reflect.Method
  • java.io.RandomAccessFile
  • java.io.File
  • java.nio.ByteBuffer
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