Examples with PageCache org.neo4j.io.pagecache.PageCache used on opensource projects

Example 46 with PageCache

use of org.neo4j.io.pagecache.PageCache in project neo4j by neo4j.

the class StoreMigrationIT method data.

@Parameterized.Parameters(name = "Migrate: {0}->{1}")
public static Iterable<Object[]> data() throws IOException {
    FileSystemAbstraction fs = fileSystemRule.get();
    PageCache pageCache = pageCacheRule.getPageCache(fs);
    File dir = TestDirectory.testDirectory(StoreMigrationIT.class).prepareDirectoryForTest("migration");
    StoreVersionCheck storeVersionCheck = new StoreVersionCheck(pageCache);
    LegacyStoreVersionCheck legacyStoreVersionCheck = new LegacyStoreVersionCheck(fs);
    List<Object[]> data = new ArrayList<>();
    ArrayList<RecordFormats> recordFormatses = new ArrayList<>();
    RecordFormatSelector.allFormats().forEach((f) -> addIfNotThere(f, recordFormatses));
    for (RecordFormats toFormat : recordFormatses) {
        UpgradableDatabase upgradableDatabase = new UpgradableDatabase(fs, storeVersionCheck, legacyStoreVersionCheck, toFormat);
        for (RecordFormats fromFormat : recordFormatses) {
            File db = new File(dir, baseDirName(toFormat, fromFormat));
            try {
                createDb(fromFormat, db);
                if (!upgradableDatabase.hasCurrentVersion(db)) {
                    upgradableDatabase.checkUpgradeable(db);
                    data.add(new Object[] { fromFormat, toFormat });
                }
            } catch (Exception e) {
            //This means that the combination is not migratable.
            }
            fs.deleteRecursively(db);
        }
    }
    return data;
}

Example 47 with PageCache

use of org.neo4j.io.pagecache.PageCache in project neo4j by neo4j.

the class StoreUpgraderInterruptionTestIT method shouldSucceedWithUpgradeAfterPreviousAttemptDiedDuringMovingFiles.

@Test
public void shouldSucceedWithUpgradeAfterPreviousAttemptDiedDuringMovingFiles() throws IOException, ConsistencyCheckIncompleteException {
    File workingDirectory = directory.directory("working");
    File prepareDirectory = directory.directory("prepare");
    MigrationTestUtils.prepareSampleLegacyDatabase(version, fs, workingDirectory, prepareDirectory);
    PageCache pageCache = pageCacheRule.getPageCache(fs);
    StoreVersionCheck check = new StoreVersionCheck(pageCache);
    UpgradableDatabase upgradableDatabase = new UpgradableDatabase(fs, check, new LegacyStoreVersionCheck(fs), Standard.LATEST_RECORD_FORMATS);
    SilentMigrationProgressMonitor progressMonitor = new SilentMigrationProgressMonitor();
    LogService logService = NullLogService.getInstance();
    StoreMigrator failingStoreMigrator = new StoreMigrator(fs, pageCache, CONFIG, logService, schemaIndexProvider) {

        @Override
        public void moveMigratedFiles(File migrationDir, File storeDir, String versionToUpgradeFrom, String versionToMigrateTo) throws IOException {
            super.moveMigratedFiles(migrationDir, storeDir, versionToUpgradeFrom, versionToMigrateTo);
            throw new RuntimeException("This upgrade is failing");
        }
    };
    assertEquals(!StandardV2_3.STORE_VERSION.equals(version), allLegacyStoreFilesHaveVersion(fs, workingDirectory, version));
    try {
        newUpgrader(upgradableDatabase, pageCache, progressMonitor, createIndexMigrator(), failingStoreMigrator).migrateIfNeeded(workingDirectory);
        fail("Should throw exception");
    } catch (RuntimeException e) {
        assertEquals("This upgrade is failing", e.getMessage());
    }
    assertTrue(checkNeoStoreHasDefaultFormatVersion(check, workingDirectory));
    assertTrue(allStoreFilesHaveNoTrailer(fs, workingDirectory));
    progressMonitor = new SilentMigrationProgressMonitor();
    StoreMigrator migrator = new StoreMigrator(fs, pageCache, CONFIG, logService, schemaIndexProvider);
    newUpgrader(upgradableDatabase, pageCache, progressMonitor, createIndexMigrator(), migrator).migrateIfNeeded(workingDirectory);
    assertTrue(checkNeoStoreHasDefaultFormatVersion(check, workingDirectory));
    assertTrue(allStoreFilesHaveNoTrailer(fs, workingDirectory));
    pageCache.close();
    // Since consistency checker is in read only mode we need to start/stop db to generate label scan store.
    startStopDatabase(workingDirectory);
    assertConsistentStore(workingDirectory);
}

Example 48 with PageCache

use of org.neo4j.io.pagecache.PageCache in project neo4j by neo4j.

the class StoreUpgraderTest method shouldLeaveAllFilesUntouchedIfWrongVersionNumberFound.

@Test
public void shouldLeaveAllFilesUntouchedIfWrongVersionNumberFound() throws IOException {
    Set<String> applicableVersions = versionSet(StandardV2_0.STORE_VERSION, StandardV2_1.STORE_VERSION, StandardV2_2.STORE_VERSION);
    assumeTrue("Applicable only to specified version set.", applicableVersions.contains(version));
    File comparisonDirectory = new File("target/" + StoreUpgraderTest.class.getSimpleName() + "shouldLeaveAllFilesUntouchedIfWrongVersionNumberFound-comparison");
    changeVersionNumber(fileSystem, new File(dbDirectory, "neostore.nodestore.db"), "v0.9.5");
    fileSystem.deleteRecursively(comparisonDirectory);
    fileSystem.copyRecursively(dbDirectory, comparisonDirectory);
    PageCache pageCache = pageCacheRule.getPageCache(fileSystem);
    UpgradableDatabase upgradableDatabase = new UpgradableDatabase(fileSystem, new StoreVersionCheck(pageCache), new LegacyStoreVersionCheck(fileSystem), getRecordFormats());
    try {
        newUpgrader(upgradableDatabase, pageCache).migrateIfNeeded(dbDirectory);
        fail("Should throw exception");
    } catch (StoreUpgrader.UnexpectedUpgradingStoreVersionException e) {
    // expected
    }
    verifyFilesHaveSameContent(fileSystem, comparisonDirectory, dbDirectory);
}

Example 49 with PageCache

use of org.neo4j.io.pagecache.PageCache in project neo4j by neo4j.

the class StoreUpgraderTest method shouldHaltUpgradeIfUpgradeConfigurationVetoesTheProcess.

@Test
public void shouldHaltUpgradeIfUpgradeConfigurationVetoesTheProcess() throws IOException {
    PageCache pageCache = pageCacheRule.getPageCache(fileSystem);
    Config deniedMigrationConfig = Config.embeddedDefaults(MapUtil.stringMap(GraphDatabaseSettings.allow_store_upgrade.name(), "false"));
    UpgradableDatabase upgradableDatabase = new UpgradableDatabase(fileSystem, new StoreVersionCheck(pageCache), new LegacyStoreVersionCheck(fileSystem), getRecordFormats());
    try {
        newUpgrader(upgradableDatabase, deniedMigrationConfig, pageCache).migrateIfNeeded(dbDirectory);
        fail("Should throw exception");
    } catch (UpgradeNotAllowedByConfigurationException e) {
    // expected
    }
}

Example 50 with PageCache

use of org.neo4j.io.pagecache.PageCache in project neo4j by neo4j.

the class DatabaseStartupTest method startTheDatabaseWithWrongVersionShouldFailWithUpgradeNotAllowed.

@Test
public void startTheDatabaseWithWrongVersionShouldFailWithUpgradeNotAllowed() throws Throwable {
    // given
    // create a store
    File storeDir = testDirectory.graphDbDir();
    GraphDatabaseService db = new TestGraphDatabaseFactory().newEmbeddedDatabase(storeDir);
    try (Transaction tx = db.beginTx()) {
        db.createNode();
        tx.success();
    }
    db.shutdown();
    // mess up the version in the metadatastore
    try (FileSystemAbstraction fileSystem = new DefaultFileSystemAbstraction();
        PageCache pageCache = StandalonePageCacheFactory.createPageCache(fileSystem)) {
        MetaDataStore.setRecord(pageCache, new File(storeDir, MetaDataStore.DEFAULT_NAME), MetaDataStore.Position.STORE_VERSION, MetaDataStore.versionStringToLong("bad"));
    }
    // when
    try {
        new TestGraphDatabaseFactory().newEmbeddedDatabase(storeDir);
        fail("It should have failed.");
    } catch (RuntimeException ex) {
        // then
        assertTrue(ex.getCause() instanceof LifecycleException);
        assertTrue(ex.getCause().getCause() instanceof UpgradeNotAllowedByConfigurationException);
        assertEquals("Failed to start Neo4j with an older data store version. To enable automatic upgrade, " + "please set configuration parameter \"dbms.allow_format_migration=true\"", ex.getCause().getCause().getMessage());
    }
}