@Test
public void commitACoupleOfTransactionsSuccessfully() throws Exception {
MasterTxIdGenerator generator = newGenerator(3, 1, givenOrder());
generator.committed(dataSource, 0, 2, null);
generator.committed(dataSource, 0, 3, null);
generator.committed(dataSource, 0, 4, null);
assertCalls((FakeSlave) slaves.iterator().next(), 2, 3, 4);
assertNoFailureLogs();
}
@Test
public void commitSuccessfullyToTheFirstOne() throws Exception {
MasterTxIdGenerator generator = newGenerator(3, 1, givenOrder());
generator.committed(dataSource, 0, 2, null);
assertCalls((FakeSlave) slaves.iterator().next(), 2l);
assertNoFailureLogs();
}
@Test
public void commitSuccessfullyAtThreeSlaves() throws Exception {
MasterTxIdGenerator generator = newGenerator(5, 3, givenOrder());
generator.committed(dataSource, 0, 2, null);
generator.committed(dataSource, 0, 3, 1);
generator.committed(dataSource, 0, 4, 3);
Iterator<Slave> slaveIt = slaves.iterator();
assertCalls((FakeSlave) slaveIt.next(), 2, 3, 4);
assertCalls((FakeSlave) slaveIt.next(), 2, 4);
assertCalls((FakeSlave) slaveIt.next(), 2, 3);
assertCalls((FakeSlave) slaveIt.next());
assertCalls((FakeSlave) slaveIt.next());
assertNoFailureLogs();
}
@Test
public void commitFailureAtFirstOneShouldMoveOnToNext() throws Exception {
MasterTxIdGenerator generator = newGenerator(3, 1, givenOrder(), true);
generator.committed(dataSource, 0, 2, null);
Iterator<Slave> slaveIt = slaves.iterator();
assertCalls((FakeSlave) slaveIt.next());
assertCalls((FakeSlave) slaveIt.next(), 2);
assertNoFailureLogs();
}
@Test
public void notEnoughSlavesSuccessful() throws Exception {
MasterTxIdGenerator generator = newGenerator(3, 2, givenOrder(), true, true);
generator.committed(dataSource, 0, 2, null);
Iterator<Slave> slaveIt = slaves.iterator();
slaveIt.next();
slaveIt.next();
assertCalls((FakeSlave) slaveIt.next(), 2);
assertFailureLogs();
}
@Test
public void roundRobinSingleSlave() throws Exception {
MasterTxIdGenerator generator = newGenerator(3, 1, roundRobin());
for (long tx = 2; tx <= 6; tx++) {
generator.committed(dataSource, 0, tx, null);
}
Iterator<Slave> slaveIt = slaves.iterator();
assertCalls((FakeSlave) slaveIt.next(), 2, 5);
assertCalls((FakeSlave) slaveIt.next(), 3, 6);
assertCalls((FakeSlave) slaveIt.next(), 4);
assertNoFailureLogs();
}
@Test
public void roundRobinSomeFailing() throws Exception {
MasterTxIdGenerator generator = newGenerator(4, 2, roundRobin(), false, true);
for (long tx = 2; tx <= 6; tx++) {
generator.committed(dataSource, 0, tx, null);
}
/* SLAVE | TX
* 0 | 2 5 6
* F 1 |
* 2 | 2 3 4 6
* 3 | 3 4 5
*/
Iterator<Slave> slaveIt = slaves.iterator();
assertCalls((FakeSlave) slaveIt.next(), 2, 5, 6);
slaveIt.next();
assertCalls((FakeSlave) slaveIt.next(), 2, 3, 4, 6);
assertCalls((FakeSlave) slaveIt.next(), 3, 4, 5);
assertNoFailureLogs();
}
