Examples with TocReader org.apache.nifi.provenance.toc.TocReader used on opensource projects

Example 16 with TocReader

use of org.apache.nifi.provenance.toc.TocReader in project nifi by apache.

the class TestEventIdFirstSchemaRecordReaderWriter method testContentClaimUnchanged.

@Test
public void testContentClaimUnchanged() throws IOException {
    final File journalFile = new File("target/storage/" + UUID.randomUUID().toString() + "/testSimpleWrite.gz");
    final File tocFile = TocUtil.getTocFile(journalFile);
    final TocWriter tocWriter = new StandardTocWriter(tocFile, false, false);
    final RecordWriter writer = createWriter(journalFile, tocWriter, true, 8192);
    final Map<String, String> attributes = new HashMap<>();
    attributes.put("filename", "1.txt");
    attributes.put("uuid", UUID.randomUUID().toString());
    final ProvenanceEventBuilder builder = new StandardProvenanceEventRecord.Builder();
    builder.setEventTime(System.currentTimeMillis());
    builder.setEventType(ProvenanceEventType.RECEIVE);
    builder.setTransitUri("nifi://unit-test");
    builder.fromFlowFile(TestUtil.createFlowFile(3L, 3000L, attributes));
    builder.setComponentId("1234");
    builder.setComponentType("dummy processor");
    builder.setPreviousContentClaim("container-1", "section-1", "identifier-1", 1L, 1L);
    builder.setCurrentContentClaim("container-1", "section-1", "identifier-1", 1L, 1L);
    final ProvenanceEventRecord record = builder.build();
    writer.writeHeader(1L);
    writer.writeRecord(record);
    writer.close();
    final TocReader tocReader = new StandardTocReader(tocFile);
    try (final FileInputStream fis = new FileInputStream(journalFile);
        final RecordReader reader = createReader(fis, journalFile.getName(), tocReader, 2048)) {
        assertEquals(0, reader.getBlockIndex());
        reader.skipToBlock(0);
        final StandardProvenanceEventRecord recovered = reader.nextRecord();
        assertNotNull(recovered);
        assertEquals("nifi://unit-test", recovered.getTransitUri());
        assertEquals("container-1", recovered.getPreviousContentClaimContainer());
        assertEquals("container-1", recovered.getContentClaimContainer());
        assertEquals("section-1", recovered.getPreviousContentClaimSection());
        assertEquals("section-1", recovered.getContentClaimSection());
        assertEquals("identifier-1", recovered.getPreviousContentClaimIdentifier());
        assertEquals("identifier-1", recovered.getContentClaimIdentifier());
        assertEquals(1L, recovered.getPreviousContentClaimOffset().longValue());
        assertEquals(1L, recovered.getContentClaimOffset().longValue());
        assertEquals(1L, recovered.getPreviousFileSize().longValue());
        assertEquals(1L, recovered.getContentClaimOffset().longValue());
        assertNull(reader.nextRecord());
    }
    FileUtils.deleteFile(journalFile.getParentFile(), true);
}

Example 17 with TocReader

use of org.apache.nifi.provenance.toc.TocReader in project nifi by apache.

the class TestSchemaRecordReaderWriter method testFieldAddedToSchema.

@Test
public void testFieldAddedToSchema() throws IOException {
    final RecordField unitTestField = new SimpleRecordField("Unit Test Field", FieldType.STRING, Repetition.EXACTLY_ONE);
    final Consumer<List<RecordField>> schemaModifier = fields -> fields.add(unitTestField);
    final Map<RecordField, Object> toAdd = new HashMap<>();
    toAdd.put(unitTestField, "hello");
    try (final ByteArraySchemaRecordWriter writer = createSchemaWriter(schemaModifier, toAdd)) {
        writer.writeHeader(1L);
        writer.writeRecord(createEvent());
        writer.writeRecord(createEvent());
    }
    try (final InputStream in = new FileInputStream(journalFile);
        final TocReader tocReader = new StandardTocReader(tocFile);
        final RecordReader reader = createReader(in, journalFile.getName(), tocReader, 10000)) {
        for (int i = 0; i < 2; i++) {
            final StandardProvenanceEventRecord event = reader.nextRecord();
            assertNotNull(event);
            assertEquals("1234", event.getComponentId());
            assertEquals(ProvenanceEventType.RECEIVE, event.getEventType());
            assertNotNull(event.getUpdatedAttributes());
            assertFalse(event.getUpdatedAttributes().isEmpty());
        }
    }
}

Example 18 with TocReader

use of org.apache.nifi.provenance.toc.TocReader in project nifi by apache.

the class TestSchemaRecordReaderWriter method testReadPerformance.

@Test
@Ignore("For local performance testing only")
public void testReadPerformance() throws IOException, InterruptedException {
    // This is a simple micro-benchmarking test so that we can determine how fast the serialization/deserialization is before
    // making significant changes. This allows us to ensure that changes that we make do not have significant adverse effects
    // on performance of the repository.
    final ProvenanceEventRecord event = createEvent();
    final TocReader tocReader = null;
    final byte[] header;
    try (final ByteArrayOutputStream headerOut = new ByteArrayOutputStream();
        final DataOutputStream out = new DataOutputStream(headerOut)) {
        final RecordWriter schemaWriter = new ByteArraySchemaRecordWriter(out, "out", idGenerator, null, false, 0);
        schemaWriter.writeHeader(1L);
        header = headerOut.toByteArray();
    }
    final byte[] serializedRecord;
    try (final ByteArrayOutputStream headerOut = new ByteArrayOutputStream();
        final RecordWriter writer = new ByteArraySchemaRecordWriter(headerOut, "out", idGenerator, null, false, 0)) {
        writer.writeHeader(1L);
        headerOut.reset();
        writer.writeRecord(event);
        writer.flush();
        serializedRecord = headerOut.toByteArray();
    }
    final int numEvents = 10_000_000;
    final int recordBytes = serializedRecord.length;
    final long totalRecordBytes = (long) recordBytes * (long) numEvents;
    final long startNanos = System.nanoTime();
    try (final InputStream in = new LoopingInputStream(header, serializedRecord);
        final RecordReader reader = new ByteArraySchemaRecordReader(in, "filename", tocReader, 100000)) {
        for (int i = 0; i < numEvents; i++) {
            reader.nextRecord();
        }
    }
    final long nanos = System.nanoTime() - startNanos;
    final long millis = TimeUnit.NANOSECONDS.toMillis(nanos);
    final double seconds = millis / 1000D;
    final long bytesPerSecond = (long) (totalRecordBytes / seconds);
    final long megaBytesPerSecond = bytesPerSecond / 1024 / 1024;
    System.out.println("Took " + millis + " millis to read " + numEvents + " events or " + megaBytesPerSecond + " MB/sec");
}

Example 19 with TocReader

use of org.apache.nifi.provenance.toc.TocReader in project nifi by apache.

the class TestStandardRecordReaderWriter method testReadPerformance.

@Test
@Ignore("For local testing only")
public void testReadPerformance() throws IOException {
    // This is a simple micro-benchmarking test so that we can determine how fast the serialization/deserialization is before
    // making significant changes. This allows us to ensure that changes that we make do not have significant adverse effects
    // on performance of the repository.
    final ProvenanceEventRecord event = createEvent();
    final TocReader tocReader = null;
    final byte[] header;
    try (final ByteArrayOutputStream headerOut = new ByteArrayOutputStream();
        final DataOutputStream out = new DataOutputStream(headerOut)) {
        out.writeUTF(PersistentProvenanceRepository.class.getName());
        out.writeInt(9);
        header = headerOut.toByteArray();
    }
    final byte[] serializedRecord;
    try (final ByteArrayOutputStream headerOut = new ByteArrayOutputStream();
        final StandardRecordWriter writer = new StandardRecordWriter(headerOut, "devnull", idGenerator, null, false, 0)) {
        writer.writeHeader(1L);
        headerOut.reset();
        writer.writeRecord(event);
        writer.flush();
        serializedRecord = headerOut.toByteArray();
    }
    final int numEvents = 10_000_000;
    final long startNanos = System.nanoTime();
    try (final InputStream in = new LoopingInputStream(header, serializedRecord);
        final RecordReader reader = new StandardRecordReader(in, "filename", tocReader, 100000)) {
        for (int i = 0; i < numEvents; i++) {
            reader.nextRecord();
        }
    }
    final long nanos = System.nanoTime() - startNanos;
    final long millis = TimeUnit.NANOSECONDS.toMillis(nanos);
    System.out.println("Took " + millis + " millis to read " + numEvents + " events");
}

Example 20 with TocReader

use of org.apache.nifi.provenance.toc.TocReader in project nifi by apache.

the class PersistentProvenanceRepository method getEvents.

@Override
public List<ProvenanceEventRecord> getEvents(final long firstRecordId, final int maxRecords, final NiFiUser user) throws IOException {
    final List<ProvenanceEventRecord> records = new ArrayList<>(maxRecords);
    final List<Path> paths = getPathsForId(firstRecordId);
    if (paths == null || paths.isEmpty()) {
        return records;
    }
    for (final Path path : paths) {
        try (RecordReader reader = RecordReaders.newRecordReader(path.toFile(), getAllLogFiles(), maxAttributeChars)) {
            // just to get to the first record that we want.
            if (records.isEmpty()) {
                final TocReader tocReader = reader.getTocReader();
                if (tocReader != null) {
                    final Integer blockIndex = tocReader.getBlockIndexForEventId(firstRecordId);
                    if (blockIndex != null) {
                        reader.skipToBlock(blockIndex);
                    }
                }
            }
            StandardProvenanceEventRecord record;
            while (records.size() < maxRecords && (record = reader.nextRecord()) != null) {
                if (record.getEventId() >= firstRecordId && isAuthorized(record, user)) {
                    records.add(record);
                }
            }
        } catch (final EOFException | FileNotFoundException fnfe) {
        // assume file aged off (or there's no data in file, in case of EOFException, which indicates that data was cached
        // in operating system and entire O/S crashed and always.sync was not turned on.)
        } catch (final IOException ioe) {
            logger.error("Failed to read Provenance Event File {} due to {}", path.toFile(), ioe.toString());
            logger.error("", ioe);
            eventReporter.reportEvent(Severity.ERROR, EVENT_CATEGORY, "Failed to read Provenance Event File " + path.toFile() + " due to " + ioe.toString());
        }
        if (records.size() >= maxRecords) {
            break;
        }
    }
    if (logger.isDebugEnabled()) {
        logger.debug("Retrieving up to {} records starting at Event ID {}; returning {} events", maxRecords, firstRecordId, records.size());
    }
    return records;
}