Examples with ScanParameters org.apache.accumulo.tserver.scan.ScanParameters used on opensource projects

Example 1 with ScanParameters

use of org.apache.accumulo.tserver.scan.ScanParameters in project accumulo by apache.

the class ThriftClientHandler method startScan.

@Override
public InitialScan startScan(TInfo tinfo, TCredentials credentials, TKeyExtent textent, TRange range, List<TColumn> columns, int batchSize, List<IterInfo> ssiList, Map<String, Map<String, String>> ssio, List<ByteBuffer> authorizations, boolean waitForWrites, boolean isolated, long readaheadThreshold, TSamplerConfiguration tSamplerConfig, long batchTimeOut, String contextArg, Map<String, String> executionHints) throws NotServingTabletException, ThriftSecurityException, org.apache.accumulo.core.tabletserver.thrift.TooManyFilesException, TSampleNotPresentException {
    TableId tableId = TableId.of(new String(textent.getTable(), UTF_8));
    NamespaceId namespaceId;
    try {
        namespaceId = server.getContext().getNamespaceId(tableId);
    } catch (TableNotFoundException e1) {
        throw new NotServingTabletException(textent);
    }
    if (!security.canScan(credentials, tableId, namespaceId, range, columns, ssiList, ssio, authorizations)) {
        throw new ThriftSecurityException(credentials.getPrincipal(), SecurityErrorCode.PERMISSION_DENIED);
    }
    if (!security.authenticatedUserHasAuthorizations(credentials, authorizations)) {
        throw new ThriftSecurityException(credentials.getPrincipal(), SecurityErrorCode.BAD_AUTHORIZATIONS);
    }
    final KeyExtent extent = KeyExtent.fromThrift(textent);
    // metadata
    if (waitForWrites) {
        writeTracker.waitForWrites(TabletType.type(extent));
    }
    Tablet tablet = server.getOnlineTablet(extent);
    if (tablet == null) {
        throw new NotServingTabletException(textent);
    }
    HashSet<Column> columnSet = new HashSet<>();
    for (TColumn tcolumn : columns) {
        columnSet.add(new Column(tcolumn));
    }
    ScanParameters scanParams = new ScanParameters(batchSize, new Authorizations(authorizations), columnSet, ssiList, ssio, isolated, SamplerConfigurationImpl.fromThrift(tSamplerConfig), batchTimeOut, contextArg);
    final SingleScanSession scanSession = new SingleScanSession(credentials, extent, scanParams, readaheadThreshold, executionHints);
    scanSession.scanner = tablet.createScanner(new Range(range), scanParams, scanSession.interruptFlag);
    long sid = server.sessionManager.createSession(scanSession, true);
    ScanResult scanResult;
    try {
        scanResult = continueScan(tinfo, sid, scanSession);
    } catch (NoSuchScanIDException e) {
        log.error("The impossible happened", e);
        throw new RuntimeException();
    } finally {
        server.sessionManager.unreserveSession(sid);
    }
    return new InitialScan(sid, scanResult);
}

Example 2 with ScanParameters

use of org.apache.accumulo.tserver.scan.ScanParameters in project accumulo by apache.

the class ThriftClientHandler method startMultiScan.

@Override
public InitialMultiScan startMultiScan(TInfo tinfo, TCredentials credentials, Map<TKeyExtent, List<TRange>> tbatch, List<TColumn> tcolumns, List<IterInfo> ssiList, Map<String, Map<String, String>> ssio, List<ByteBuffer> authorizations, boolean waitForWrites, TSamplerConfiguration tSamplerConfig, long batchTimeOut, String contextArg, Map<String, String> executionHints) throws ThriftSecurityException, TSampleNotPresentException {
    // find all of the tables that need to be scanned
    final HashSet<TableId> tables = new HashSet<>();
    for (TKeyExtent keyExtent : tbatch.keySet()) {
        tables.add(TableId.of(new String(keyExtent.getTable(), UTF_8)));
    }
    if (tables.size() != 1) {
        throw new IllegalArgumentException("Cannot batch scan over multiple tables");
    }
    // check if user has permission to the tables
    for (TableId tableId : tables) {
        NamespaceId namespaceId = getNamespaceId(credentials, tableId);
        if (!security.canScan(credentials, tableId, namespaceId, tbatch, tcolumns, ssiList, ssio, authorizations)) {
            throw new ThriftSecurityException(credentials.getPrincipal(), SecurityErrorCode.PERMISSION_DENIED);
        }
    }
    try {
        if (!security.authenticatedUserHasAuthorizations(credentials, authorizations)) {
            throw new ThriftSecurityException(credentials.getPrincipal(), SecurityErrorCode.BAD_AUTHORIZATIONS);
        }
    } catch (ThriftSecurityException tse) {
        log.error("{} is not authorized", credentials.getPrincipal(), tse);
        throw tse;
    }
    // @formatter:off
    Map<KeyExtent, List<Range>> batch = tbatch.entrySet().stream().collect(Collectors.toMap(entry -> KeyExtent.fromThrift(entry.getKey()), entry -> entry.getValue().stream().map(Range::new).collect(Collectors.toList())));
    // @formatter:on
    // This is used to determine which thread pool to use
    KeyExtent threadPoolExtent = batch.keySet().iterator().next();
    if (waitForWrites) {
        writeTracker.waitForWrites(TabletType.type(batch.keySet()));
    }
    Set<Column> columnSet = tcolumns.isEmpty() ? Collections.emptySet() : new HashSet<>(Collections2.transform(tcolumns, Column::new));
    ScanParameters scanParams = new ScanParameters(-1, new Authorizations(authorizations), columnSet, ssiList, ssio, false, SamplerConfigurationImpl.fromThrift(tSamplerConfig), batchTimeOut, contextArg);
    final MultiScanSession mss = new MultiScanSession(credentials, threadPoolExtent, batch, scanParams, executionHints);
    mss.numTablets = batch.size();
    for (List<Range> ranges : batch.values()) {
        mss.numRanges += ranges.size();
    }
    long sid = server.sessionManager.createSession(mss, true);
    MultiScanResult result;
    try {
        result = continueMultiScan(sid, mss);
    } finally {
        server.sessionManager.unreserveSession(sid);
    }
    return new InitialMultiScan(sid, result);
}

Example 3 with ScanParameters

use of org.apache.accumulo.tserver.scan.ScanParameters in project accumulo by apache.

the class Tablet method checkConditions.

public void checkConditions(ConditionChecker checker, Authorizations authorizations, AtomicBoolean iFlag) throws IOException {
    ScanParameters scanParams = new ScanParameters(-1, authorizations, Collections.emptySet(), null, null, false, null, -1, null);
    scanParams.setScanDispatch(ScanDispatch.builder().build());
    ScanDataSource dataSource = new ScanDataSource(this, scanParams, false, iFlag);
    try {
        SortedKeyValueIterator<Key, Value> iter = new SourceSwitchingIterator(dataSource);
        checker.check(iter);
    } catch (IOException ioe) {
        dataSource.close(true);
        throw ioe;
    } finally {
        // code in finally block because always want
        // to return mapfiles, even when exception is thrown
        dataSource.close(false);
    }
}