Examples with LogReader org.apache.distributedlog.api.LogReader used on opensource projects

Example 21 with LogReader

use of org.apache.distributedlog.api.LogReader in project incubator-pulsar by apache.

the class DLInputStreamTest method testRead.

/**
 * Test Case: read records from the input stream.
 */
@Test
public void testRead() throws Exception {
    DistributedLogManager dlm = mock(DistributedLogManager.class);
    LogReader reader = mock(LogReader.class);
    when(dlm.getInputStream(any(DLSN.class))).thenReturn(reader);
    byte[] data = "test-read".getBytes(UTF_8);
    LogRecordWithDLSN record = mock(LogRecordWithDLSN.class);
    when(record.getPayLoadInputStream()).thenReturn(new ByteArrayInputStream(data));
    when(reader.readNext(anyBoolean())).thenReturn(record).thenThrow(new EndOfStreamException("eos"));
    DLInputStream in = new DLInputStream(dlm);
    int numReads = 0;
    int readByte;
    while ((readByte = in.read()) != -1) {
        assertEquals(data[numReads], readByte);
        ++numReads;
    }
    assertEquals(data.length, numReads);
}

Example 22 with LogReader

use of org.apache.distributedlog.api.LogReader in project incubator-heron by apache.

the class DLInputStreamTest method testClose.

/**
 * Test Case: close the input stream
 */
@Test
public void testClose() throws Exception {
    DistributedLogManager dlm = mock(DistributedLogManager.class);
    LogReader reader = mock(LogReader.class);
    when(dlm.getInputStream(any(DLSN.class))).thenReturn(reader);
    DLInputStream in = new DLInputStream(dlm);
    verify(dlm, times(1)).getInputStream(eq(DLSN.InitialDLSN));
    in.close();
    verify(dlm, times(1)).close();
    verify(reader, times(1)).close();
}

Example 23 with LogReader

use of org.apache.distributedlog.api.LogReader in project incubator-heron by apache.

the class DLInputStreamTest method testReadEos.

/**
 * Test Case: reader hits eos (end of stream)
 */
@Test
public void testReadEos() throws Exception {
    DistributedLogManager dlm = mock(DistributedLogManager.class);
    LogReader reader = mock(LogReader.class);
    when(dlm.getInputStream(any(DLSN.class))).thenReturn(reader);
    when(reader.readNext(anyBoolean())).thenThrow(new EndOfStreamException("eos"));
    byte[] b = new byte[1];
    DLInputStream in = new DLInputStream(dlm);
    assertEquals("Should return 0 when reading an empty eos stream", 0, in.read(b, 0, 1));
    assertEquals("Should return -1 when reading an empty eos stream", -1, in.read(b, 0, 1));
}

Example 24 with LogReader

use of org.apache.distributedlog.api.LogReader in project incubator-heron by apache.

the class DLInputStreamTest method testRead.

/**
 * Test Case: read records from the input stream.
 */
@Test
public void testRead() throws Exception {
    DistributedLogManager dlm = mock(DistributedLogManager.class);
    LogReader reader = mock(LogReader.class);
    when(dlm.getInputStream(any(DLSN.class))).thenReturn(reader);
    byte[] data = "test-read".getBytes(UTF_8);
    LogRecordWithDLSN record = mock(LogRecordWithDLSN.class);
    when(record.getPayLoadInputStream()).thenReturn(new ByteArrayInputStream(data));
    when(reader.readNext(anyBoolean())).thenReturn(record).thenThrow(new EndOfStreamException("eos"));
    DLInputStream in = new DLInputStream(dlm);
    int numReads = 0;
    int readByte;
    while ((readByte = in.read()) != -1) {
        assertEquals(data[numReads], readByte);
        ++numReads;
    }
    assertEquals(data.length, numReads);
}

Example 25 with LogReader

use of org.apache.distributedlog.api.LogReader in project incubator-heron by apache.

the class DLDownloaderTest method testOpenInputStream.

@Test
public void testOpenInputStream() throws Exception {
    Namespace ns = mock(Namespace.class);
    DistributedLogManager dlm = mock(DistributedLogManager.class);
    LogReader reader = mock(LogReader.class);
    when(ns.openLog(anyString())).thenReturn(dlm);
    when(dlm.getInputStream(eq(DLSN.InitialDLSN))).thenReturn(reader);
    InputStream is = DLDownloader.openInputStream(ns, "test-open-inputstream");
    assertTrue(is instanceof DLInputStream);
    is.close();
    verify(dlm, times(1)).close();
    verify(reader, times(1)).close();
}