Examples with MessageDescribe org.apache.activemq.artemis.core.persistence.impl.journal.DescribeJournal.MessageDescribe used on opensource projects

Example 1 with MessageDescribe

use of org.apache.activemq.artemis.core.persistence.impl.journal.DescribeJournal.MessageDescribe in project activemq-artemis by apache.

the class XmlDataExporter method processMessageJournal.

/**
 * Read through the message journal and stuff all the events/data we care about into local data structures.  We'll
 * use this data later to print all the right information.
 *
 * @throws Exception will be thrown if anything goes wrong reading the journal
 */
private void processMessageJournal() throws Exception {
    ArrayList<RecordInfo> acks = new ArrayList<>();
    List<RecordInfo> records = new LinkedList<>();
    // We load these, but don't use them.
    List<PreparedTransactionInfo> preparedTransactions = new LinkedList<>();
    Journal messageJournal = storageManager.getMessageJournal();
    ActiveMQServerLogger.LOGGER.debug("Reading journal from " + config.getJournalDirectory());
    messageJournal.start();
    // Just logging these, no action necessary
    TransactionFailureCallback transactionFailureCallback = new TransactionFailureCallback() {

        @Override
        public void failedTransaction(long transactionID, List<RecordInfo> records1, List<RecordInfo> recordsToDelete) {
            StringBuilder message = new StringBuilder();
            message.append("Encountered failed journal transaction: ").append(transactionID);
            for (int i = 0; i < records1.size(); i++) {
                if (i == 0) {
                    message.append("; Records: ");
                }
                message.append(records1.get(i));
                if (i != (records1.size() - 1)) {
                    message.append(", ");
                }
            }
            for (int i = 0; i < recordsToDelete.size(); i++) {
                if (i == 0) {
                    message.append("; RecordsToDelete: ");
                }
                message.append(recordsToDelete.get(i));
                if (i != (recordsToDelete.size() - 1)) {
                    message.append(", ");
                }
            }
            ActiveMQServerLogger.LOGGER.debug(message.toString());
        }
    };
    messageJournal.load(records, preparedTransactions, transactionFailureCallback, false);
    // Since we don't use these nullify the reference so that the garbage collector can clean them up
    preparedTransactions = null;
    for (RecordInfo info : records) {
        byte[] data = info.data;
        ActiveMQBuffer buff = ActiveMQBuffers.wrappedBuffer(data);
        Object o = DescribeJournal.newObjectEncoding(info, storageManager);
        if (info.getUserRecordType() == JournalRecordIds.ADD_MESSAGE) {
            messages.put(info.id, ((MessageDescribe) o).getMsg().toCore());
        } else if (info.getUserRecordType() == JournalRecordIds.ADD_MESSAGE_PROTOCOL) {
            messages.put(info.id, ((MessageDescribe) o).getMsg().toCore());
        } else if (info.getUserRecordType() == JournalRecordIds.ADD_LARGE_MESSAGE) {
            messages.put(info.id, ((MessageDescribe) o).getMsg());
        } else if (info.getUserRecordType() == JournalRecordIds.ADD_REF) {
            ReferenceDescribe ref = (ReferenceDescribe) o;
            HashMap<Long, ReferenceDescribe> map = messageRefs.get(info.id);
            if (map == null) {
                HashMap<Long, ReferenceDescribe> newMap = new HashMap<>();
                newMap.put(ref.refEncoding.queueID, ref);
                messageRefs.put(info.id, newMap);
            } else {
                map.put(ref.refEncoding.queueID, ref);
            }
        } else if (info.getUserRecordType() == JournalRecordIds.ACKNOWLEDGE_REF) {
            acks.add(info);
        } else if (info.userRecordType == JournalRecordIds.ACKNOWLEDGE_CURSOR) {
            CursorAckRecordEncoding encoding = new CursorAckRecordEncoding();
            encoding.decode(buff);
            Set<PagePosition> set = cursorRecords.get(encoding.queueID);
            if (set == null) {
                set = new HashSet<>();
                cursorRecords.put(encoding.queueID, set);
            }
            set.add(encoding.position);
        } else if (info.userRecordType == JournalRecordIds.PAGE_TRANSACTION) {
            if (info.isUpdate) {
                PageUpdateTXEncoding pageUpdate = new PageUpdateTXEncoding();
                pageUpdate.decode(buff);
                pgTXs.add(pageUpdate.pageTX);
            } else {
                PageTransactionInfoImpl pageTransactionInfo = new PageTransactionInfoImpl();
                pageTransactionInfo.decode(buff);
                pageTransactionInfo.setRecordID(info.id);
                pgTXs.add(pageTransactionInfo.getTransactionID());
            }
        }
    }
    messageJournal.stop();
    removeAcked(acks);
}