Examples with ArchiveReader org.csstudio.archive.reader.ArchiveReader used on opensource projects

Example 1 with ArchiveReader

use of org.csstudio.archive.reader.ArchiveReader in project org.csstudio.display.builder by kasemir.

the class ExportJob method run.

/**
 * Job's main routine
 *  {@inheritDoc}
 */
@Override
protected final IStatus run(final IProgressMonitor monitor) {
    monitor.beginTask("Data Export", IProgressMonitor.UNKNOWN);
    try {
        final PrintStream out;
        if (filename != null) {
            out = new PrintStream(filename);
            printExportInfo(out);
        } else
            out = null;
        // Start thread that checks monitor to cancels readers when
        // user tries to abort the export job
        final CancellationPoll cancel_poll = new CancellationPoll(monitor);
        final Future<?> done = Activator.getThreadPool().submit(cancel_poll);
        performExport(monitor, out);
        // ask thread to exit
        cancel_poll.exit = true;
        if (out != null)
            out.close();
        // Wait for poller to quit
        done.get();
    } catch (final Exception ex) {
        error_handler.handleExportError(ex);
    }
    for (ArchiveReader reader : archive_readers) reader.close();
    monitor.done();
    return Status.OK_STATUS;
}

Example 2 with ArchiveReader

use of org.csstudio.archive.reader.ArchiveReader in project org.csstudio.display.builder by kasemir.

the class ExportJob method createValueIterator.

/**
 * @param item ModelItem
 *  @return ValueIterator for samples in the item
 *  @throws Exception on error
 */
protected ValueIterator createValueIterator(final ModelItem item) throws Exception {
    if (source == Source.PLOT || !(item instanceof PVItem))
        return new ModelSampleIterator(item, start, end);
    // Start ValueIterator for each sub-archive
    final ArchiveDataSource[] archives = ((PVItem) item).getArchiveDataSources();
    final List<ValueIterator> iters = new ArrayList<>();
    Exception error = null;
    for (ArchiveDataSource archive : archives) {
        // Create reader, remember to close it when done
        final ArchiveReader reader = ArchiveRepository.getInstance().getArchiveReader(archive.getUrl());
        archive_readers.add(reader);
        // Create ValueIterator
        try {
            ValueIterator iter;
            if (source == Source.OPTIMIZED_ARCHIVE && optimize_parameter > 1)
                iter = reader.getOptimizedValues(archive.getKey(), item.getName(), start, end, (int) optimize_parameter);
            else {
                iter = reader.getRawValues(archive.getKey(), item.getName(), start, end);
                if (source == Source.LINEAR_INTERPOLATION && optimize_parameter >= 1)
                    iter = new LinearValueIterator(iter, TimeDuration.ofSeconds(optimize_parameter));
            }
            iters.add(iter);
        } catch (Exception ex) {
            Logger.getLogger(getClass().getName()).log(Level.FINE, "Export error for " + item.getName(), ex);
            if (error == null)
                error = ex;
        }
    }
    // If none of the iterators work out, report the first error that we found
    if (iters.isEmpty() && error != null)
        throw error;
    // Return a merging iterator
    return new MergingValueIterator(iters.toArray(new ValueIterator[iters.size()]));
}

Example 3 with ArchiveReader

use of org.csstudio.archive.reader.ArchiveReader in project org.csstudio.display.builder by kasemir.

the class ConnectJob method run.

/**
 * {@inheritDoc}
 */
@Override
protected IStatus run(final IProgressMonitor monitor) {
    monitor.beginTask(url, IProgressMonitor.UNKNOWN);
    monitor.subTask(url);
    try (final ArchiveReader reader = ArchiveRepository.getInstance().getArchiveReader(url)) {
        final StringBuilder buf = new StringBuilder();
        buf.append("Archive Data Server: " + reader.getServerName() + "\n\n");
        buf.append("URL:\n" + reader.getURL() + "\n\n");
        buf.append("Version: " + reader.getVersion() + "\n\n");
        buf.append("Description:\n" + reader.getDescription());
        final ArchiveInfo[] infos = reader.getArchiveInfos();
        archiveServerConnected(buf.toString(), infos);
    } catch (final Exception ex) {
        logger.log(Level.WARNING, "Cannot connect to archive " + url, ex);
        archiveServerError(url, ex);
        monitor.setCanceled(true);
        return Status.CANCEL_STATUS;
    }
    monitor.done();
    return Status.OK_STATUS;
}

Example 4 with ArchiveReader

use of org.csstudio.archive.reader.ArchiveReader in project org.csstudio.display.builder by kasemir.

the class SearchJob method run.

/**
 * {@inheritDoc}
 */
@Override
protected IStatus run(final IProgressMonitor monitor) {
    final ArrayList<ChannelInfo> channels = new ArrayList<>();
    monitor.beginTask(Messages.Search, archives.length);
    for (ArchiveDataSource archive : archives) {
        try (final ArchiveReader reader = ArchiveRepository.getInstance().getArchiveReader(archive.getUrl())) {
            monitor.subTask(archive.getName());
            final String[] names;
            if (pattern_is_glob)
                names = reader.getNamesByPattern(archive.getKey(), pattern);
            else
                names = reader.getNamesByRegExp(archive.getKey(), pattern);
            for (String name : names) channels.add(new ChannelInfo(name, archive));
            monitor.worked(1);
        } catch (final Exception ex) {
            monitor.setCanceled(true);
            monitor.done();
            archiveServerError(archive.getUrl(), ex);
            return Status.CANCEL_STATUS;
        }
    }
    receivedChannelInfos((ChannelInfo[]) channels.toArray(new ChannelInfo[channels.size()]));
    monitor.done();
    return Status.OK_STATUS;
}

Example 5 with ArchiveReader

use of org.csstudio.archive.reader.ArchiveReader in project org.csstudio.display.builder by kasemir.

the class ImportArchiveReaderFactory method getArchiveReader.

/**
 * {@inheritDoc}
 */
@Override
public ArchiveReader getArchiveReader(final String url) throws Exception {
    // Avoid duplicate readers for same URL
    synchronized (cache) {
        ArchiveReader reader = cache.get(url);
        if (reader != null)
            return reader;
    }
    // Get path, importer from URL
    final String[] type_path = parseURL(url);
    final String type = type_path[0];
    final String path = type_path[1];
    final SampleImporterInfo importer = SampleImporters.getImporter(type);
    if (importer == null)
        throw new Exception("Unknown import data type " + type);
    final ImportArchiveReader reader = new ImportArchiveReader(url, path, importer);
    // Cache the reader by URL
    synchronized (cache) {
        cache.put(url, reader);
    }
    return reader;
}