def testDeletePrevEntries(self):
log = Log(10**8, 10**8, None)
iteratorIDs = [0, 1]
log.initIterators(iteratorIDs, [])
func = print
args = [1, 2]
params_1 = [0, 1, 2, 3, 4, 5]
shm_name, entry_size = log.createLogEntry(func, args, params_1)
reference_1 = {}
reference_1['func'], reference_1['args'] = func, args
reference_1['logIndex'], reference_1['currentTerm'], reference_1[
'prevLogIndex'] = params_1[0], params_1[1], params_1[2]
reference_1['prevLogTerm'], reference_1['commitIndex'], reference_1[
'leaderID'] = params_1[3], params_1[4], params_1[5]
reference_1['shm_name'], reference_1['shm_size'], reference_1[
'isCommitted'] = shm_name, entry_size, False
params_1_extended = params_1 + [entry_size, False]
log.addEntry(shm_name, params_1_extended)
func = print
args = [2, 3, 4]
params_2 = [1, 2, 3, 4, 5, 6]
shm_name, entry_size = log.createLogEntry(func, args, params_2)
reference_2 = {}
reference_2['func'], reference_2['args'] = func, args
reference_2['logIndex'], reference_2['currentTerm'], reference_2[
'prevLogIndex'] = params_2[0], params_2[1], params_2[2]
reference_2['prevLogTerm'], reference_2['commitIndex'], reference_2[
'leaderID'] = params_2[3], params_2[4], params_2[5]
reference_2['shm_name'], reference_2['shm_size'], reference_2[
'isCommitted'] = shm_name, entry_size, False
params_2_extended = params_2 + [entry_size, False]
log.addEntry(shm_name, params_2_extended)
entry_0 = log.jump(0, 2, getNode=True)
self.assertEqualEntry(log, entry_0, reference_2)
log.deleteAllPrevEntries(entry_0)
self.assertEqual(len(log), 3, "len(log) should be 3")
entry_1 = log.jump(1, 2, getNode=True)
log.deleteAllPrevEntries(entry_0)
self.assertEqual(len(log), 1, "len(log) should be 1")
self.assertEqual(log.nodeSizes[0], reference_2['shm_size'],
'shm_size does not match for reference')
log.deleteAllEntries()
self.assertEqual(len(log), 0, "len(log) should be 0")
def testDeleteEntry(self):
log = Log(10**8, 10**8, None)
iteratorIDs = [0, 1]
log.initIterators(iteratorIDs, [])
func = print
args = [1, 2]
params_1 = [0, 1, 2, 3, 4, 5]
shm_name, entry_size = log.createLogEntry(func, args, params_1)
reference_1 = {}
reference_1['func'], reference_1['args'] = func, args
reference_1['logIndex'], reference_1['currentTerm'], reference_1[
'prevLogIndex'] = params_1[0], params_1[1], params_1[2]
reference_1['prevLogTerm'], reference_1['commitIndex'], reference_1[
'leaderID'] = params_1[3], params_1[4], params_1[5]
reference_1['shm_name'], reference_1['shm_size'], reference_1[
'isCommitted'] = shm_name, entry_size, False
params_1_extended = params_1 + [entry_size, False]
log.addEntry(shm_name, params_1_extended)
func = print
args = [2, 3, 4]
params_2 = [1, 2, 3, 4, 5, 6]
shm_name, entry_size = log.createLogEntry(func, args, params_2)
reference_2 = {}
reference_2['func'], reference_2['args'] = func, args
reference_2['logIndex'], reference_2['currentTerm'], reference_2[
'prevLogIndex'] = params_2[0], params_2[1], params_2[2]
reference_2['prevLogTerm'], reference_2['commitIndex'], reference_2[
'leaderID'] = params_2[3], params_2[4], params_2[5]
reference_2['shm_name'], reference_2['shm_size'], reference_2[
'isCommitted'] = shm_name, entry_size, False
params_2_extended = params_2 + [entry_size, False]
log.addEntry(shm_name, params_2_extended)
self.assertEqual(len(log), 3, "len(log) should be 2")
self.assertEqual(log.current(0), 0, "log.first should be 0 by default")
next_entry = log.next(0, getNode=True)
next_entry = log.next(0, getNode=True)
self.assertEqualEntry(log, next_entry, reference_2)
self.assertEqualEntry(log, log.current(0, getNode=True), reference_2)
self.assertEqual(log.ptrs[0][1], 2, 'index should be 2')
shm = multiprocessing.shared_memory.SharedMemory(
name=next_entry.value[0])
self.assertEqualEntryBuffer(log, shm.buf, reference_2)
utils.freeSharedMemory(shm, clear=False)
prev_entry = log.prev(0, saveState=False, getNode=True)
self.assertEqualEntry(log, prev_entry, reference_1)
self.assertEqual(log.ptrs[0][1], 2, 'index should be 2')
log.deleteEntry(
prev_entry
) # At this stage prev_entry cannot be deleted because one of the pointers is at idx=0
self.assertEqual(len(log), 3, 'len(log) should be 3')
next_entry = log.next(1, getNode=True)
next_entry = log.next(1, getNode=True)
log.deleteEntry(
prev_entry
) # At this stage prev_entry can be deleted because both of the pointers is at idx=2
self.assertEqual(len(log), 2, 'len(log) should be 2')
self.assertEqualEntry(log, log.current(0, getNode=True), reference_2)
self.assertEqual(len(log.nodeSizes), 2,
'len(log.nodeSizes) should be 2')
self.assertEqual(log.nodeSizes[1], reference_2['shm_size'],
'shm_size does not match for reference')
log.deleteAllEntries()
self.assertEqual(len(log), 0, 'log should be empty')
self.assertEqual(sum(log.nodeSizes), 0, 'nodeSizes should be empty')
self.assertEqual(log.logSize, 0, 'logSize should be 0')