Examples with DelegatingFileSystemAbstraction org.neo4j.graphdb.mockfs.DelegatingFileSystemAbstraction used on opensource projects

Example 6 with DelegatingFileSystemAbstraction

use of org.neo4j.graphdb.mockfs.DelegatingFileSystemAbstraction in project neo4j by neo4j.

the class NodeStoreTest method shouldCloseStoreFileOnFailureToOpen.

@Test
public void shouldCloseStoreFileOnFailureToOpen() throws Exception {
    // GIVEN
    final AtomicBoolean fired = new AtomicBoolean();
    FileSystemAbstraction fs = new DelegatingFileSystemAbstraction(efs.get()) {

        @Override
        public StoreChannel open(File fileName, String mode) throws IOException {
            return new DelegatingStoreChannel(super.open(fileName, mode)) {

                @Override
                public int read(ByteBuffer dst) throws IOException {
                    Exception stack = new Exception();
                    if (containsStackTraceElement(stack, item -> item.getMethodName().equals("initGenerator")) && !containsStackTraceElement(stack, item -> item.getMethodName().equals("createNodeStore"))) {
                        fired.set(true);
                        throw new IOException("Proving a point here");
                    }
                    return super.read(dst);
                }
            };
        }
    };
    // WHEN
    try (PageCache pageCache = pageCacheRule.getPageCache(fs)) {
        newNodeStore(fs);
        fail("Should fail");
    }// Close the page cache here so that we can see failure to close (due to still mapped files)
     catch (Exception e) {
        // THEN
        assertTrue(contains(e, IOException.class));
        assertTrue(fired.get());
    }
}

Example 7 with DelegatingFileSystemAbstraction

use of org.neo4j.graphdb.mockfs.DelegatingFileSystemAbstraction in project neo4j by neo4j.

the class StoreLockerTest method shouldNotObtainLockWhenUnableToOpenLockFile.

@Test
public void shouldNotObtainLockWhenUnableToOpenLockFile() throws Exception {
    FileSystemAbstraction fileSystemAbstraction = new DelegatingFileSystemAbstraction(fileSystemRule.get()) {

        @Override
        public StoreChannel open(File fileName, String mode) throws IOException {
            throw new IOException("cannot open lock file");
        }

        @Override
        public boolean fileExists(File fileName) {
            return false;
        }
    };
    File storeDir = target.directory("unused");
    try (StoreLocker storeLocker = new StoreLocker(fileSystemAbstraction)) {
        storeLocker.checkLock(storeDir);
        fail();
    } catch (StoreLockException e) {
        String msg = format("Unable to obtain lock on store lock file: %s. " + "Please ensure no other process is using this database, and that the " + "directory is writable (required even for read-only access)", new File(storeDir, STORE_LOCK_FILENAME));
        assertThat(e.getMessage(), is(msg));
    }
}

Example 8 with DelegatingFileSystemAbstraction

use of org.neo4j.graphdb.mockfs.DelegatingFileSystemAbstraction in project neo4j by neo4j.

the class StoreLockerTest method shouldNotObtainLockWhenStoreDirCannotBeCreated.

@Test
public void shouldNotObtainLockWhenStoreDirCannotBeCreated() throws Exception {
    FileSystemAbstraction fileSystemAbstraction = new DelegatingFileSystemAbstraction(fileSystemRule.get()) {

        @Override
        public void mkdirs(File fileName) throws IOException {
            throw new IOException("store dir could not be created");
        }

        @Override
        public boolean fileExists(File fileName) {
            return false;
        }
    };
    File storeDir = target.directory("unused");
    try (StoreLocker storeLocker = new StoreLocker(fileSystemAbstraction)) {
        storeLocker.checkLock(storeDir);
        fail();
    } catch (StoreLockException e) {
        String msg = format("Unable to create path for store dir: %s. " + "Please ensure no other process is using this database, and that " + "the directory is writable (required even for read-only access)", storeDir);
        assertThat(e.getMessage(), is(msg));
    }
}

Example 9 with DelegatingFileSystemAbstraction

use of org.neo4j.graphdb.mockfs.DelegatingFileSystemAbstraction in project neo4j by neo4j.

the class FileRoleRepositoryTest method shouldRecoverIfCrashedDuringMove.

@Test
public void shouldRecoverIfCrashedDuringMove() throws Throwable {
    // Given
    final IOException exception = new IOException("simulated IO Exception on create");
    FileSystemAbstraction craschingFileSystem = new DelegatingFileSystemAbstraction(fs) {

        @Override
        public void renameFile(File oldLocation, File newLocation, CopyOption... copyOptions) throws IOException {
            if (roleFile.getName().equals(newLocation.getName())) {
                throw exception;
            }
            super.renameFile(oldLocation, newLocation, copyOptions);
        }
    };
    roleRepository = new FileRoleRepository(craschingFileSystem, roleFile, logProvider);
    roleRepository.start();
    RoleRecord role = new RoleRecord("admin", "jake");
    // When
    try {
        roleRepository.create(role);
        fail("Expected an IOException");
    } catch (IOException e) {
        assertSame(exception, e);
    }
    // Then
    assertFalse(craschingFileSystem.fileExists(roleFile));
    assertThat(craschingFileSystem.listFiles(roleFile.getParentFile()).length, equalTo(0));
}

Example 10 with DelegatingFileSystemAbstraction

use of org.neo4j.graphdb.mockfs.DelegatingFileSystemAbstraction in project neo4j by neo4j.

the class FileUserRepositoryTest method shouldRecoverIfCrashedDuringMove.

@Test
public void shouldRecoverIfCrashedDuringMove() throws Throwable {
    // Given
    final IOException exception = new IOException("simulated IO Exception on create");
    FileSystemAbstraction craschingFileSystem = new DelegatingFileSystemAbstraction(fs) {

        @Override
        public void renameFile(File oldLocation, File newLocation, CopyOption... copyOptions) throws IOException {
            if (authFile.getName().equals(newLocation.getName())) {
                throw exception;
            }
            super.renameFile(oldLocation, newLocation, copyOptions);
        }
    };
    FileUserRepository users = new FileUserRepository(craschingFileSystem, authFile, logProvider);
    users.start();
    User user = new User.Builder("jake", Credential.INACCESSIBLE).withRequiredPasswordChange(true).build();
    // When
    try {
        users.create(user);
        fail("Expected an IOException");
    } catch (IOException e) {
        assertSame(exception, e);
    }
    // Then
    assertFalse(craschingFileSystem.fileExists(authFile));
    assertThat(craschingFileSystem.listFiles(authFile.getParentFile()).length, equalTo(0));
}