Examples with TSummaries org.apache.accumulo.core.data.thrift.TSummaries used on opensource projects

Example 1 with TSummaries

use of org.apache.accumulo.core.data.thrift.TSummaries in project accumulo by apache.

the class TableOperationsImpl method summaries.

@Override
public SummaryRetriever summaries(String tableName) {
    return new SummaryRetriever() {

        private Text startRow = null;

        private Text endRow = null;

        private List<TSummarizerConfiguration> summariesToFetch = Collections.emptyList();

        private String summarizerClassRegex;

        private boolean flush = false;

        @Override
        public SummaryRetriever startRow(Text startRow) {
            Objects.requireNonNull(startRow);
            if (endRow != null) {
                Preconditions.checkArgument(startRow.compareTo(endRow) < 0, "Start row must be less than end row : %s >= %s", startRow, endRow);
            }
            this.startRow = startRow;
            return this;
        }

        @Override
        public SummaryRetriever startRow(CharSequence startRow) {
            return startRow(new Text(startRow.toString()));
        }

        @Override
        public List<Summary> retrieve() throws AccumuloException, AccumuloSecurityException, TableNotFoundException {
            Table.ID tableId = Tables.getTableId(context.getInstance(), tableName);
            if (Tables.getTableState(context.getInstance(), tableId) == TableState.OFFLINE)
                throw new TableOfflineException(context.getInstance(), tableId.canonicalID());
            TRowRange range = new TRowRange(TextUtil.getByteBuffer(startRow), TextUtil.getByteBuffer(endRow));
            TSummaryRequest request = new TSummaryRequest(tableId.canonicalID(), range, summariesToFetch, summarizerClassRegex);
            if (flush) {
                _flush(tableId, startRow, endRow, true);
            }
            TSummaries ret = ServerClient.execute(context, new TabletClientService.Client.Factory(), client -> {
                TSummaries tsr = client.startGetSummaries(Tracer.traceInfo(), context.rpcCreds(), request);
                while (!tsr.finished) {
                    tsr = client.contiuneGetSummaries(Tracer.traceInfo(), tsr.sessionId);
                }
                return tsr;
            });
            return new SummaryCollection(ret).getSummaries();
        }

        @Override
        public SummaryRetriever endRow(Text endRow) {
            Objects.requireNonNull(endRow);
            if (startRow != null) {
                Preconditions.checkArgument(startRow.compareTo(endRow) < 0, "Start row must be less than end row : %s >= %s", startRow, endRow);
            }
            this.endRow = endRow;
            return this;
        }

        @Override
        public SummaryRetriever endRow(CharSequence endRow) {
            return endRow(new Text(endRow.toString()));
        }

        @Override
        public SummaryRetriever withConfiguration(Collection<SummarizerConfiguration> configs) {
            Objects.requireNonNull(configs);
            summariesToFetch = configs.stream().map(SummarizerConfigurationUtil::toThrift).collect(Collectors.toList());
            return this;
        }

        @Override
        public SummaryRetriever withConfiguration(SummarizerConfiguration... config) {
            Objects.requireNonNull(config);
            return withConfiguration(Arrays.asList(config));
        }

        @Override
        public SummaryRetriever withMatchingConfiguration(String regex) {
            Objects.requireNonNull(regex);
            // Do a sanity check here to make sure that regex compiles, instead of having it fail on a tserver.
            Pattern.compile(regex);
            this.summarizerClassRegex = regex;
            return this;
        }

        @Override
        public SummaryRetriever flush(boolean b) {
            this.flush = b;
            return this;
        }
    };
}