Examples with FileSystemWatcher org.apache.asterix.external.util.FileSystemWatcher used on opensource projects

Example 6 with FileSystemWatcher

use of org.apache.asterix.external.util.FileSystemWatcher in project asterixdb by apache.

the class RecordWithMetaTest method runTest.

@SuppressWarnings({ "unchecked", "rawtypes" })
public // @Test commented out due to ASTERIXDB-1881
void runTest() throws Exception {
    File file = new File("target/beer.adm");
    File expected = new File(getClass().getResource("/openbeerdb/beer.txt").toURI().getPath());
    try {
        FileUtils.deleteQuietly(file);
        PrintStream printStream = new PrintStream(Files.newOutputStream(Paths.get(file.toURI())));
        // create key type
        IAType[] keyTypes = { BuiltinType.ASTRING };
        String keyName = "id";
        List<String> keyNameAsList = new ArrayList<>(1);
        keyNameAsList.add(keyName);
        // create record type
        String[] recordFieldNames = {};
        IAType[] recordFieldTypes = {};
        recordType = new ARecordType("value", recordFieldNames, recordFieldTypes, true);
        // create the meta type
        String[] metaFieldNames = { keyName, "flags", "expiration", "cas", "rev", "vbid", "dtype" };
        IAType[] metaFieldTypes = { BuiltinType.ASTRING, BuiltinType.AINT32, BuiltinType.AINT64, BuiltinType.AINT64, BuiltinType.AINT32, BuiltinType.AINT32, BuiltinType.AINT32 };
        ARecordType metaType = new ARecordType("meta", metaFieldNames, metaFieldTypes, true);
        int valueIndex = 4;
        char delimiter = ',';
        int numOfTupleFields = 3;
        int[] pkIndexes = { 0 };
        int[] pkIndicators = { 1 };
        List<Path> paths = new ArrayList<>();
        paths.add(Paths.get(getClass().getResource("/openbeerdb/beer.csv").toURI()));
        FileSystemWatcher watcher = new FileSystemWatcher(paths, null, false);
        // create input stream
        LocalFSInputStream inputStream = new LocalFSInputStream(watcher);
        // create reader record reader
        Map<String, String> config = new HashMap<>();
        config.put(ExternalDataConstants.KEY_HEADER, "true");
        config.put(ExternalDataConstants.KEY_QUOTE, ExternalDataConstants.DEFAULT_QUOTE);
        LineRecordReader lineReader = new LineRecordReader();
        lineReader.configure(inputStream, config);
        // create csv with json record reader
        CSVToRecordWithMetadataAndPKConverter recordConverter = new CSVToRecordWithMetadataAndPKConverter(valueIndex, delimiter, metaType, recordType, pkIndicators, pkIndexes, keyTypes);
        // create the value parser <ADM in this case>
        ADMDataParser valueParser = new ADMDataParser(recordType, false);
        // create parser.
        RecordWithMetadataParser parser = new RecordWithMetadataParser(metaType, valueParser, recordConverter);
        // create serializer deserializer and printer factories
        ISerializerDeserializer[] serdes = new ISerializerDeserializer[keyTypes.length + 2];
        IPrinterFactory[] printerFactories = new IPrinterFactory[keyTypes.length + 2];
        for (int i = 0; i < keyTypes.length; i++) {
            serdes[i + 2] = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(keyTypes[i]);
            printerFactories[i + 2] = ADMPrinterFactoryProvider.INSTANCE.getPrinterFactory(keyTypes[i]);
        }
        serdes[0] = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(recordType);
        serdes[1] = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(metaType);
        printerFactories[0] = ADMPrinterFactoryProvider.INSTANCE.getPrinterFactory(recordType);
        printerFactories[1] = ADMPrinterFactoryProvider.INSTANCE.getPrinterFactory(metaType);
        // create output descriptor
        IPrinter[] printers = new IPrinter[printerFactories.length];
        for (int i = 0; i < printerFactories.length; i++) {
            printers[i] = printerFactories[i].createPrinter();
        }
        ArrayTupleBuilder tb = new ArrayTupleBuilder(numOfTupleFields);
        while (lineReader.hasNext()) {
            IRawRecord<char[]> record = lineReader.next();
            tb.reset();
            parser.parse(record, tb.getDataOutput());
            tb.addFieldEndOffset();
            parser.parseMeta(tb.getDataOutput());
            tb.addFieldEndOffset();
            parser.appendLastParsedPrimaryKeyToTuple(tb);
            //print tuple
            printTuple(tb, printers, printStream);
        }
        lineReader.close();
        printStream.close();
        Assert.assertTrue(FileUtils.contentEquals(file, expected));
    } catch (Throwable th) {
        System.err.println("TEST FAILED");
        th.printStackTrace();
        throw th;
    } finally {
        FileUtils.deleteQuietly(file);
    }
    System.err.println("TEST PASSED.");
}