Examples with ChangeLogRecord org.apache.jackrabbit.core.cluster.ChangeLogRecord used on opensource projects

Example 1 with ChangeLogRecord

use of org.apache.jackrabbit.core.cluster.ChangeLogRecord in project jackrabbit by apache.

the class SearchIndex method getChangeLogRecords.

/**
 * Polls the underlying journal for events of the type ChangeLogRecord that
 * happened after a given revision, on a given workspace.
 *
 * @param revision
 *            starting revision
 * @param workspace
 *            the workspace name
 * @return
 */
private List<ChangeLogRecord> getChangeLogRecords(long revision, final String workspace) {
    log.debug("Get changes from the Journal for revision {} and workspace {}.", revision, workspace);
    ClusterNode cn = getContext().getClusterNode();
    if (cn == null) {
        return Collections.emptyList();
    }
    Journal journal = cn.getJournal();
    final List<ChangeLogRecord> events = new ArrayList<ChangeLogRecord>();
    ClusterRecordDeserializer deserializer = new ClusterRecordDeserializer();
    RecordIterator records = null;
    try {
        records = journal.getRecords(revision);
        while (records.hasNext()) {
            Record record = records.nextRecord();
            if (!record.getProducerId().equals(cn.getId())) {
                continue;
            }
            ClusterRecord r = null;
            try {
                r = deserializer.deserialize(record);
            } catch (JournalException e) {
                log.error("Unable to read revision '" + record.getRevision() + "'.", e);
            }
            if (r == null) {
                continue;
            }
            r.process(new ClusterRecordProcessor() {

                public void process(ChangeLogRecord record) {
                    String eventW = record.getWorkspace();
                    if (eventW != null ? eventW.equals(workspace) : workspace == null) {
                        events.add(record);
                    }
                }

                public void process(LockRecord record) {
                }

                public void process(NamespaceRecord record) {
                }

                public void process(NodeTypeRecord record) {
                }

                public void process(PrivilegeRecord record) {
                }

                public void process(WorkspaceRecord record) {
                }
            });
        }
    } catch (JournalException e1) {
        log.error(e1.getMessage(), e1);
    } finally {
        if (records != null) {
            records.close();
        }
    }
    return events;
}

Example 2 with ChangeLogRecord

use of org.apache.jackrabbit.core.cluster.ChangeLogRecord in project jackrabbit by apache.

the class SearchIndex method checkPendingJournalChanges.

/**
 * In the case of an initial index build operation, this checks if there are
 * some new nodes pending in the journal and tries to preemptively delete
 * them, to keep the index consistent.
 *
 * See JCR-3162
 *
 * @param context
 * @throws IOException
 */
private void checkPendingJournalChanges(QueryHandlerContext context) {
    ClusterNode cn = context.getClusterNode();
    if (cn == null) {
        return;
    }
    List<NodeId> addedIds = new ArrayList<NodeId>();
    long rev = cn.getRevision();
    List<ChangeLogRecord> changes = getChangeLogRecords(rev, context.getWorkspace());
    Iterator<ChangeLogRecord> iterator = changes.iterator();
    while (iterator.hasNext()) {
        ChangeLogRecord record = iterator.next();
        for (ItemState state : record.getChanges().addedStates()) {
            if (!state.isNode()) {
                continue;
            }
            addedIds.add((NodeId) state.getId());
        }
    }
    if (!addedIds.isEmpty()) {
        Collection<NodeState> empty = Collections.emptyList();
        try {
            updateNodes(addedIds.iterator(), empty.iterator());
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
    }
}