Examples with RecordCursorIterator com.apple.foundationdb.record.RecordCursorIterator used on opensource projects

Example 11 with RecordCursorIterator

use of com.apple.foundationdb.record.RecordCursorIterator in project fdb-record-layer by FoundationDB.

the class FDBRecordStoreIndexTest method testIndexMissingValidation.

@Test
public void testIndexMissingValidation() throws Exception {
    final int nRecords = 10;
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context);
        for (int i = 0; i < nRecords; i++) {
            TestRecords1Proto.MySimpleRecord.Builder recBuilder = TestRecords1Proto.MySimpleRecord.newBuilder();
            recBuilder.setRecNo(i);
            recBuilder.setStrValueIndexed(Integer.toString(i));
            // nRecords is not larger than 10, so the indexes (sorted by the string version of recNo) are in the
            // same order as the records. This can make the test easy.
            recordStore.saveRecord(recBuilder.build());
        }
        commit(context);
    }
    // Delete the indexes of some records.
    Set<InvalidIndexEntry> expectedInvalidEntries = new HashSet<>();
    try (FDBRecordContext context = openContext()) {
        final Index index = recordStore.getRecordMetaData().getIndex("MySimpleRecord$str_value_indexed");
        openSimpleRecordStore(context);
        List<FDBStoredRecord<Message>> savedRecords = recordStore.scanRecords(TupleRange.ALL, null, ScanProperties.FORWARD_SCAN).asList().get();
        List<IndexEntry> indexEntries = recordStore.scanIndex(index, IndexScanType.BY_VALUE, TupleRange.ALL, null, ScanProperties.FORWARD_SCAN).asList().get();
        for (int i = 0; i < nRecords; i += 2) {
            IndexEntry indexEntry = indexEntries.get(i);
            FDBStoredRecord<Message> record = savedRecords.get(i);
            final Tuple valueKey = indexEntry.getKey();
            final Tuple entryKey = indexEntryKey(index, valueKey, record.getPrimaryKey());
            final byte[] keyBytes = recordStore.indexSubspace(index).pack(valueKey);
            byte[] v0 = recordStore.getContext().ensureActive().get(keyBytes).get();
            recordStore.getContext().ensureActive().clear(keyBytes);
            byte[] v = recordStore.getContext().ensureActive().get(keyBytes).get();
            expectedInvalidEntries.add(InvalidIndexEntry.newMissing(indexEntry, record));
        }
        commit(context);
    }
    try (FDBDatabaseRunner runner = fdb.newRunner()) {
        AtomicInteger generatorCount = new AtomicInteger();
        // Set a scanned records limit to mock when the NoNextReason is out of band.
        RecordCursorIterator<InvalidIndexEntry> cursor = new AutoContinuingCursor<>(runner, (context, continuation) -> new LazyCursor<>(FDBRecordStore.newBuilder().setContext(context).setKeySpacePath(path).setMetaDataProvider(simpleMetaData(NO_HOOK)).openAsync().thenApply(currentRecordStore -> {
            generatorCount.getAndIncrement();
            final Index index = currentRecordStore.getRecordMetaData().getIndex("MySimpleRecord$str_value_indexed");
            ScanProperties scanProperties = new ScanProperties(ExecuteProperties.newBuilder().setReturnedRowLimit(Integer.MAX_VALUE).setIsolationLevel(IsolationLevel.SNAPSHOT).setScannedRecordsLimit(4).build());
            return currentRecordStore.getIndexMaintainer(index).validateEntries(continuation, scanProperties);
        }))).asIterator();
        Set<InvalidIndexEntry> results = new HashSet<>();
        cursor.forEachRemaining(results::add);
        assertEquals(expectedInvalidEntries, results);
        // The number of scans is about the number of index entries (orphan validation) plus the number of records
        // (missing validation).
        assertThat(generatorCount.get(), greaterThanOrEqualTo((5 + 10) / 4));
    }
}

Example 12 with RecordCursorIterator

use of com.apple.foundationdb.record.RecordCursorIterator in project fdb-record-layer by FoundationDB.

the class FDBRecordStoreIndexTest method uniquenessViolationsWithFanOut.

@Test
public void uniquenessViolationsWithFanOut() throws Exception {
    Index index = new Index("MySimpleRecord$repeater", field("repeater", FanType.FanOut), Index.EMPTY_VALUE, IndexTypes.VALUE, IndexOptions.UNIQUE_OPTIONS);
    RecordMetaDataHook hook = metaData -> metaData.addIndex("MySimpleRecord", index);
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        assertThat(recordStore.isIndexWriteOnly(index), is(false));
        recordStore.markIndexWriteOnly(index).get();
        assertThat(recordStore.isIndexWriteOnly(index), is(true));
        context.commit();
    }
    TestRecords1Proto.MySimpleRecord record1 = TestRecords1Proto.MySimpleRecord.newBuilder().setRecNo(1066L).addRepeater(1).addRepeater(2).addRepeater(3).build();
    TestRecords1Proto.MySimpleRecord record2 = TestRecords1Proto.MySimpleRecord.newBuilder().setRecNo(1793L).addRepeater(2).addRepeater(3).build();
    TestRecords1Proto.MySimpleRecord record3 = TestRecords1Proto.MySimpleRecord.newBuilder().setRecNo(1849L).addRepeater(3).build();
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        recordStore.saveRecord(record1);
        recordStore.saveRecord(record2);
        recordStore.saveRecord(record3);
        context.commit();
    }
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        assertEquals(5, (int) recordStore.scanUniquenessViolations(index).getCount().get());
        assertEquals(0, (int) recordStore.scanUniquenessViolations(index, Key.Evaluated.scalar(1)).getCount().get());
        assertEquals(2, (int) recordStore.scanUniquenessViolations(index, Key.Evaluated.scalar(2)).getCount().get());
        assertEquals(3, (int) recordStore.scanUniquenessViolations(index, Key.Evaluated.scalar(3)).getCount().get());
        RecordCursorIterator<RecordIndexUniquenessViolation> cursor = recordStore.scanUniquenessViolations(index, Key.Evaluated.scalar(3)).asIterator();
        assertTrue(cursor.hasNext());
        RecordIndexUniquenessViolation next = cursor.next();
        assertEquals(Tuple.from(3L), next.getIndexEntry().getKey());
        assertEquals(Tuple.from(1066L), next.getPrimaryKey());
        assertThat(next.getExistingKey(), is(oneOf(Tuple.from(1793L), Tuple.from(1849L))));
        assertTrue(cursor.hasNext());
        next = cursor.next();
        assertEquals(Tuple.from(3L), next.getIndexEntry().getKey());
        assertEquals(Tuple.from(1793L), next.getPrimaryKey());
        assertThat(next.getExistingKey(), is(oneOf(Tuple.from(1066L), Tuple.from(1849L))));
        assertTrue(cursor.hasNext());
        next = cursor.next();
        assertEquals(Tuple.from(3L), next.getIndexEntry().getKey());
        assertEquals(Tuple.from(1849L), next.getPrimaryKey());
        assertThat(next.getExistingKey(), is(oneOf(Tuple.from(1066L), Tuple.from(1793L))));
        assertFalse(cursor.hasNext());
        cursor = recordStore.scanUniquenessViolations(index, Key.Evaluated.scalar(2)).asIterator();
        assertTrue(cursor.hasNext());
        next = cursor.next();
        assertEquals(Tuple.from(2L), next.getIndexEntry().getKey());
        assertEquals(Tuple.from(1066L), next.getPrimaryKey());
        assertEquals(Tuple.from(1793L), next.getExistingKey());
        assertTrue(cursor.hasNext());
        next = cursor.next();
        assertEquals(Tuple.from(2L), next.getIndexEntry().getKey());
        assertEquals(Tuple.from(1793L), next.getPrimaryKey());
        assertEquals(Tuple.from(1066L), next.getExistingKey());
        assertFalse(cursor.hasNext());
    }
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        recordStore.resolveUniquenessViolation(index, Key.Evaluated.scalar(3), null).get();
        assertEquals(0, (int) recordStore.scanUniquenessViolations(index).getCount().get());
        assertNull(recordStore.loadRecord(Tuple.from(1066L)));
        assertNull(recordStore.loadRecord(Tuple.from(1793L)));
        assertNull(recordStore.loadRecord(Tuple.from(1849L)));
    }
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        recordStore.resolveUniquenessViolation(index, Tuple.from(3), Tuple.from(1066L)).get();
        assertEquals(0, (int) recordStore.scanUniquenessViolations(index).getCount().get());
        assertNotNull(recordStore.loadRecord(Tuple.from(1066L)));
        assertNull(recordStore.loadRecord(Tuple.from(1793L)));
        assertNull(recordStore.loadRecord(Tuple.from(1849L)));
    }
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        recordStore.resolveUniquenessViolation(index, Tuple.from(3), Tuple.from(1793L)).get();
        assertEquals(0, (int) recordStore.scanUniquenessViolations(index).getCount().get());
        assertNull(recordStore.loadRecord(Tuple.from(1066L)));
        assertNotNull(recordStore.loadRecord(Tuple.from(1793L)));
        assertNull(recordStore.loadRecord(Tuple.from(1849L)));
    }
    try (FDBRecordContext context = openContext()) {
        openSimpleRecordStore(context, hook);
        recordStore.resolveUniquenessViolation(index, Tuple.from(3), Tuple.from(1849L)).get();
        assertEquals(0, (int) recordStore.scanUniquenessViolations(index).getCount().get());
        assertNull(recordStore.loadRecord(Tuple.from(1066L)));
        assertNull(recordStore.loadRecord(Tuple.from(1793L)));
        assertNotNull(recordStore.loadRecord(Tuple.from(1849L)));
    }
}

Example 13 with RecordCursorIterator

use of com.apple.foundationdb.record.RecordCursorIterator in project fdb-record-layer by FoundationDB.

the class VersionIndexTest method queryOnVersion.

@ParameterizedTest(name = "queryOnVersion [formatVersion = {0}, splitLongRecords = {1}]")
@MethodSource("formatVersionArguments")
@SuppressWarnings("try")
public void queryOnVersion(int testFormatVersion, boolean testSplitLongRecords) {
    formatVersion = testFormatVersion;
    splitLongRecords = testSplitLongRecords;
    List<MySimpleRecord> simpleRecords = IntStream.range(0, 30).mapToObj(id -> MySimpleRecord.newBuilder().setRecNo(id * 2).setNumValue2(id % 2).setNumValue3Indexed(id % 3).build()).collect(Collectors.toList());
    List<TestRecords1Proto.MyOtherRecord> otherRecords = IntStream.range(0, 30).mapToObj(id -> TestRecords1Proto.MyOtherRecord.newBuilder().setRecNo(id * 2 + 1).setNumValue2(id % 2).setNumValue3Indexed(id % 3).build()).collect(Collectors.toList());
    Iterator<MySimpleRecord> simpleIterator = simpleRecords.iterator();
    Iterator<TestRecords1Proto.MyOtherRecord> otherIterator = otherRecords.iterator();
    while (simpleIterator.hasNext()) {
        try (FDBRecordContext context = openContext(simpleVersionHook)) {
            int done = 0;
            while (simpleIterator.hasNext() && done != 5) {
                recordStore.saveRecord(simpleIterator.next());
                recordStore.saveRecord(otherIterator.next());
                done += 1;
            }
            context.commit();
        }
    }
    // Query all records.
    try (FDBRecordContext context = openContext(simpleVersionHook)) {
        List<Long> expectedKeys = Stream.concat(simpleRecords.stream().map(MySimpleRecord::getRecNo), otherRecords.stream().map(TestRecords1Proto.MyOtherRecord::getRecNo)).sorted().collect(Collectors.toList());
        FDBRecordVersion last = null;
        List<Long> receivedKeys = new ArrayList<>();
        int totalSeen = 0;
        while (true) {
            RecordQueryPlan plan;
            if (last == null) {
                RecordQuery query = RecordQuery.newBuilder().setSort(VersionKeyExpression.VERSION).build();
                plan = planner.plan(query);
                assertEquals("Index(globalVersion <,>)", plan.toString());
            } else {
                RecordQuery query = RecordQuery.newBuilder().setFilter(Query.version().greaterThan(last)).setSort(VersionKeyExpression.VERSION).build();
                plan = planner.plan(query);
                assertEquals("Index(globalVersion ([" + last.toVersionstamp() + "],>)", plan.toString());
            }
            RecordCursorIterator<FDBQueriedRecord<Message>> cursor = recordStore.executeQuery(plan, null, ExecuteProperties.newBuilder().setReturnedRowLimit(10).build()).asIterator();
            boolean hasAny = false;
            while (cursor.hasNext()) {
                hasAny = true;
                FDBQueriedRecord<Message> record = cursor.next();
                assertTrue(record.hasVersion());
                if (last != null) {
                    assertThat(last, lessThan(record.getVersion()));
                }
                last = record.getVersion();
                receivedKeys.add(field("rec_no").evaluateSingleton(record.getStoredRecord()).toTuple().getLong(0));
                totalSeen += 1;
            }
            if (!hasAny) {
                break;
            }
        }
        assertEquals(simpleRecords.size() + otherRecords.size(), totalSeen);
        assertEquals(expectedKeys, receivedKeys);
    }
    // Query MySimpleRecord based on value.
    try (FDBRecordContext context = openContext(simpleVersionHook)) {
        List<Long> expectedKeys = simpleRecords.stream().filter(rec -> rec.getNumValue2() == 0).map(MySimpleRecord::getRecNo).collect(Collectors.toList());
        List<Long> receivedKeys = new ArrayList<>();
        FDBRecordVersion last = null;
        int totalSeen = 0;
        while (true) {
            RecordCursorIterator<? extends FDBRecord<Message>> cursor;
            if (last == null) {
                RecordQuery query = RecordQuery.newBuilder().setRecordType("MySimpleRecord").setFilter(Query.field("num_value_2").equalsValue(0)).setSort(VersionKeyExpression.VERSION).build();
                RecordQueryPlan plan = planner.plan(query);
                assertEquals("Index(MySimpleRecord$num2-version [[0],[0]])", plan.toString());
                cursor = recordStore.executeQuery(plan, null, ExecuteProperties.newBuilder().setReturnedRowLimit(3).build()).asIterator();
            } else {
                RecordQuery query = RecordQuery.newBuilder().setRecordType("MySimpleRecord").setFilter(Query.and(Query.field("num_value_2").equalsValue(0), Query.version().greaterThan(last))).setSort(VersionKeyExpression.VERSION).build();
                RecordQueryPlan plan = planner.plan(query);
                assertEquals("Index(MySimpleRecord$num2-version ([0, " + last.toVersionstamp() + "],[0]])", plan.toString());
                cursor = recordStore.executeQuery(plan, null, ExecuteProperties.newBuilder().setReturnedRowLimit(3).build()).asIterator();
            }
            boolean hasAny = false;
            while (cursor.hasNext()) {
                hasAny = true;
                FDBRecord<Message> record = cursor.next();
                MySimpleRecord simpleRecord = MySimpleRecord.newBuilder().mergeFrom(record.getRecord()).build();
                assertEquals(0, simpleRecord.getNumValue2());
                assertTrue(record.hasVersion());
                if (last != null) {
                    assertThat(last, lessThan(record.getVersion()));
                }
                last = record.getVersion();
                receivedKeys.add(simpleRecord.getRecNo());
                totalSeen += 1;
            }
            if (!hasAny) {
                break;
            }
        }
        assertEquals((simpleRecords.size() + 1) / 2, totalSeen);
        assertEquals(expectedKeys, receivedKeys);
    }
    // Query that requires also filtering
    try (FDBRecordContext context = openContext(simpleVersionHook)) {
        List<Long> expectedKeys = simpleRecords.stream().filter(rec -> rec.getNumValue2() == 0 && rec.getNumValue3Indexed() == 0).map(MySimpleRecord::getRecNo).collect(Collectors.toList());
        List<Long> receivedKeys = new ArrayList<>();
        FDBRecordVersion last = null;
        int totalSeen = 0;
        while (true) {
            RecordCursorIterator<? extends FDBRecord<Message>> cursor;
            if (last == null) {
                RecordQuery query = RecordQuery.newBuilder().setRecordType("MySimpleRecord").setFilter(Query.and(Query.field("num_value_2").equalsValue(0), Query.field("num_value_3_indexed").equalsValue(0))).setSort(VersionKeyExpression.VERSION).build();
                RecordQueryPlan plan = planner.plan(query);
                assertEquals("Index(MySimpleRecord$num2-version [[0],[0]]) | num_value_3_indexed EQUALS 0", plan.toString());
                cursor = recordStore.executeQuery(plan, null, ExecuteProperties.newBuilder().setReturnedRowLimit(2).build()).asIterator();
            } else {
                RecordQuery query = RecordQuery.newBuilder().setRecordType("MySimpleRecord").setFilter(Query.and(Query.field("num_value_2").equalsValue(0), Query.field("num_value_3_indexed").equalsValue(0), Query.version().greaterThan(last))).setSort(VersionKeyExpression.VERSION).build();
                RecordQueryPlan plan = planner.plan(query);
                assertEquals("Index(MySimpleRecord$num2-version ([0, " + last.toVersionstamp() + "],[0]]) | num_value_3_indexed EQUALS 0", plan.toString());
                cursor = recordStore.executeQuery(plan, null, ExecuteProperties.newBuilder().setReturnedRowLimit(2).build()).asIterator();
            }
            boolean hasAny = false;
            while (cursor.hasNext()) {
                hasAny = true;
                FDBRecord<Message> record = cursor.next();
                MySimpleRecord simpleRecord = MySimpleRecord.newBuilder().mergeFrom(record.getRecord()).build();
                assertEquals(0, simpleRecord.getNumValue2());
                assertTrue(record.hasVersion());
                if (last != null) {
                    assertThat(last, lessThan(record.getVersion()));
                }
                last = record.getVersion();
                receivedKeys.add(simpleRecord.getRecNo());
                totalSeen += 1;
            }
            if (!hasAny) {
                break;
            }
        }
        assertEquals(simpleRecords.size() / 6, totalSeen);
        assertEquals(expectedKeys, receivedKeys);
    }
    // Query that can't be satisfied with an index scan.
    try (FDBRecordContext context = openContext(simpleVersionHook)) {
        // Preliminary query to get a read version.
        RecordQuery prelimQuery = RecordQuery.newBuilder().setSort(VersionKeyExpression.VERSION).build();
        RecordQueryPlan prelimPlan = planner.plan(prelimQuery);
        FDBRecordVersion chosenVersion = recordStore.executeQuery(prelimPlan, null, ExecuteProperties.newBuilder().setReturnedRowLimit(10).build()).asList().thenApply(list -> list.get(list.size() - 1).getVersion()).join();
        RecordQuery query = RecordQuery.newBuilder().setRecordType("MySimpleRecord").setFilter(Query.version().greaterThan(chosenVersion)).setSort(field("num_value_3_indexed")).build();
        RecordQueryPlan plan = planner.plan(query);
        assertEquals("Index(MySimpleRecord$num_value_3_indexed <,>) | version GREATER_THAN " + chosenVersion.toString(), plan.toString());
        List<FDBQueriedRecord<Message>> records = recordStore.executeQuery(plan).asList().join();
        int last = -1;
        for (FDBQueriedRecord<Message> record : records) {
            MySimpleRecord simpleRecord = MySimpleRecord.newBuilder().mergeFrom(record.getRecord()).build();
            assertThat(last, lessThanOrEqualTo(simpleRecord.getNumValue3Indexed()));
            assertTrue(record.hasVersion());
            assertThat(chosenVersion, lessThan(record.getVersion()));
            last = simpleRecord.getNumValue3Indexed();
        }
        assertEquals(simpleRecords.size() - 5, records.size());
    }
}

Example 14 with RecordCursorIterator

use of com.apple.foundationdb.record.RecordCursorIterator in project fdb-record-layer by FoundationDB.

the class VersionIndexTest method validateUsingOlderVersionFormat.

private <M extends Message> void validateUsingOlderVersionFormat(@Nonnull List<FDBStoredRecord<M>> storedRecords) {
    // Make sure all of the records have versions in the old keyspace
    final Subspace legacyVersionSubspace = recordStore.getLegacyVersionSubspace();
    RecordCursorIterator<Pair<Tuple, FDBRecordVersion>> versionKeyPairs = KeyValueCursor.Builder.withSubspace(legacyVersionSubspace).setContext(recordStore.getRecordContext()).setScanProperties(ScanProperties.FORWARD_SCAN).build().map(kv -> Pair.of(legacyVersionSubspace.unpack(kv.getKey()), FDBRecordVersion.fromBytes(kv.getValue()))).asIterator();
    for (FDBStoredRecord<M> storedRecord : storedRecords) {
        assertTrue(versionKeyPairs.hasNext());
        Pair<Tuple, FDBRecordVersion> versionPair = versionKeyPairs.next();
        assertEquals(storedRecord.getPrimaryKey(), versionPair.getLeft());
        assertEquals(storedRecord.getVersion(), versionPair.getRight());
    }
    assertFalse(versionKeyPairs.hasNext());
    // Validate that no value in the record subspace begins with the type code for versionstamps
    final Subspace recordsSubspace = recordStore.recordsSubspace();
    KeyValueCursor.Builder.withSubspace(recordsSubspace).setContext(recordStore.getRecordContext()).setScanProperties(ScanProperties.FORWARD_SCAN).build().forEach(kv -> assertNotEquals(VERSIONSTAMP_CODE, kv.getValue()[0])).join();
}

Example 15 with RecordCursorIterator

use of com.apple.foundationdb.record.RecordCursorIterator in project fdb-record-layer by FoundationDB.

the class RankIndexTest method queryWithRanks.

@Test
public void queryWithRanks() throws Exception {
    RecordQuery query = RecordQuery.newBuilder().setRecordType("BasicRankedRecord").setFilter(Query.field("gender").equalsValue("M")).setSort(Key.Expressions.field("score")).build();
    RecordQueryPlan plan = planner.plan(query);
    QueryRecordFunction<Long> ranker = Query.rank(Key.Expressions.field("score").groupBy(Key.Expressions.field("gender")));
    try (FDBRecordContext context = openContext()) {
        openRecordStore(context);
        try (RecordCursorIterator<? extends Pair<Message, Long>> cursor = recordStore.executeQuery(plan).mapPipelined(record -> ranker.eval(recordStore, EvaluationContext.EMPTY, record.getStoredRecord()).thenApply(rank -> new ImmutablePair<>(record.getRecord(), rank)), recordStore.getPipelineSize(PipelineOperation.RECORD_FUNCTION)).asIterator()) {
            long rank = 0;
            while (cursor.hasNext()) {
                Pair<Message, Long> recWithRank = cursor.next();
                TestRecordsRankProto.BasicRankedRecord.Builder myrec = TestRecordsRankProto.BasicRankedRecord.newBuilder();
                myrec.mergeFrom(recWithRank.getLeft());
                assertEquals((Long) rank++, recWithRank.getRight());
            }
        }
    }
}