Examples with ReadOnlyCursor org.apache.bookkeeper.mledger.ReadOnlyCursor used on opensource projects

Example 41 with ReadOnlyCursor

use of org.apache.bookkeeper.mledger.ReadOnlyCursor in project pulsar by apache.

the class ReadOnlyCursorTest method skipMultiple.

@Test
void skipMultiple() throws Exception {
    ManagedLedger ledger = factory.open("skip", new ManagedLedgerConfig().setMaxEntriesPerLedger(7).setRetentionTime(1, TimeUnit.HOURS).setRetentionSizeInMB(-1));
    int N = 30;
    for (int i = 0; i < N; i++) {
        ledger.addEntry(("entry-" + i).getBytes());
    }
    ReadOnlyCursor cursor = factory.openReadOnlyCursor("skip", PositionImpl.EARLIEST, new ManagedLedgerConfig());
    assertEquals(cursor.getNumberOfEntries(), N);
    assertTrue(cursor.hasMoreEntries());
    cursor.skipEntries(25);
    assertEquals(cursor.getNumberOfEntries(), 5);
    assertTrue(cursor.hasMoreEntries());
    cursor.skipEntries(5);
    assertEquals(cursor.getNumberOfEntries(), 0);
    assertFalse(cursor.hasMoreEntries());
    cursor.close();
}

Example 42 with ReadOnlyCursor

use of org.apache.bookkeeper.mledger.ReadOnlyCursor in project pulsar by apache.

the class ReadOnlyCursorTest method specifyStartPosition.

@Test
void specifyStartPosition() throws Exception {
    ManagedLedger ledger = factory.open("simple", new ManagedLedgerConfig().setRetentionTime(1, TimeUnit.HOURS));
    int N = 10;
    for (int i = 0; i < N; i++) {
        ledger.addEntry(("entry-" + i).getBytes());
    }
    ReadOnlyCursor cursor = factory.openReadOnlyCursor("simple", PositionImpl.EARLIEST, new ManagedLedgerConfig());
    assertEquals(cursor.getNumberOfEntries(), N);
    assertTrue(cursor.hasMoreEntries());
    Position readPosition = cursor.getReadPosition();
    cursor = factory.openReadOnlyCursor("simple", readPosition, new ManagedLedgerConfig());
    assertEquals(cursor.getNumberOfEntries(), N);
    assertTrue(cursor.hasMoreEntries());
    cursor.skipEntries(5);
    Position newReadPosition = cursor.getReadPosition();
    cursor = factory.openReadOnlyCursor("simple", newReadPosition, new ManagedLedgerConfig());
    assertEquals(cursor.getNumberOfEntries(), N - 5);
    assertTrue(cursor.hasMoreEntries());
}