def test_fifo_nack_past(self):
with self.getTestDir() as dirn:
conf = {
'dir': dirn,
'file:maxsize': 1024,
'window:max': 4,
'window:min': 2,
'window:fill': 1,
}
sent = []
with s_fifo.Fifo(conf) as fifo:
self.eq(fifo.wind.nack, 0)
while fifo.atom.size != 0:
fifo.put('whee')
nseq = fifo.nseq
path = fifo._getSeqPath(0)
os.unlink(path)
with s_fifo.Fifo(conf) as fifo:
self.eq(fifo.wind.nack, nseq)
def test_fifo_resync_race_ack_resync(self):
with self.getTestDir() as dirn:
N = 1000
conf = {'dir': dirn}
evt = threading.Event()
items = ['foo' + str(i) for i in range(N)]
sent = []
def race(data):
evt.set()
time.sleep(0)
sent.append(data[2])
@firethread
def otherwrite():
evt.wait()
# This call to ack will not actually cull anything because
# its seqn is -1. Instead, it will call resync, which won't
# until after iteration has completed.
fifo.ack(-1)
with s_fifo.Fifo(conf) as fifo:
fifo.puts(items)
thr = otherwrite()
fifo.resync(xmit=race)
thr.join()
# The end result should be all of the items in order, followed by all of the items in order again
self.len(2 * N, sent)
self.eq(sent[0:N], items)
self.eq(sent[N:2 * N], items)
def test_fifo_puts(self):
with self.getTestDir() as dirn:
sent = []
conf = {'dir': dirn}
with s_fifo.Fifo(conf) as fifo:
fifo.resync(xmit=sent.append)
fifo.puts(('foo', 'bar'))
self.eq(tuple(sent), ((0, 4, 'foo'), (4, 8, 'bar')))
def test_fifo_resync_race_put(self):
with self.getTestDir() as dirn:
N = 1000
conf = {'dir': dirn}
evt = threading.Event()
items = ['foo' + str(i) for i in range(N)]
sent = []
def race(data):
evt.set()
time.sleep(0)
sent.append(data[2])
@firethread
def otherwrite():
evt.wait()
fifo.puts(('attempting to mutate', 'during iteration'))
with s_fifo.Fifo(conf) as fifo:
fifo.puts(items)
thr = otherwrite()
fifo.resync(xmit=race)
thr.join()
self.len(N + 2, sent)
self.eq(sent[0:N], items)
self.eq(sent[N:N + 1], ['attempting to mutate'])
self.eq(sent[N + 1:N + 2], ['during iteration'])
with s_fifo.Fifo(conf) as fifo:
fifo.resync(xmit=race)
self.len(2 * (N + 2), sent)
self.eq(sent[0:N], items)
self.eq(sent[N:N + 1], ['attempting to mutate'])
self.eq(sent[N + 1:N + 2], ['during iteration'])
self.eq(sent[N + 2:2 * N + 2], items)
self.eq(sent[2 * N + 2:2 * N + 3], ['attempting to mutate'])
self.eq(sent[2 * N + 3:2 * N + 4], ['during iteration'])
def test_fifo_ack_neg1(self):
with self.getTestDir() as dirn:
conf = {'dir': dirn}
sent = []
with s_fifo.Fifo(conf, xmit=sent.append) as fifo:
fifo.put('foo')
fifo.put('bar')
slen = len(sent)
fifo.ack(-1)
self.eq(len(sent), slen * 2)
self.eq(sent[:slen], sent[slen:])
# also test ack of lower than nack
self.true(fifo.ack(sent[0][1]))
self.false(fifo.ack(sent[0][1]))
def test_fifo_flush(self):
with self.getTestDir() as dirn:
conf = {'dir': dirn}
sent = []
with s_fifo.Fifo(conf) as fifo:
fifo.put('whee')
fifo.put('whee')
fifo.resync(xmit=sent.append)
fifo.ack(sent[0][1])
# dirty
fifo.flush()
# not dirty
fifo.flush()
def test_fifo_fifo(self):
with self.getTestDir() as dirn:
# some very small settings so we trigger
# more of the cleanup / culling code...
conf = {
'dir': dirn,
'file:maxsize': 1024,
'window:max': 4,
'window:min': 2,
'window:fill': 1,
}
sent = []
with s_fifo.Fifo(conf) as fifo:
fifo.put('foo')
fifo.resync(xmit=sent.append)
self.eq(sent[0][2], 'foo')
self.len(1, fifo.wind.dequ)
# these should all end up in the window
fifo.put('bar')
fifo.put('baz')
fifo.put('faz')
self.eq(sent[1][2], 'bar')
self.eq(sent[2][2], 'baz')
self.eq(sent[3][2], 'faz')
self.len(4, fifo.wind.dequ)
self.true(fifo.wind.caught)
# the next should *not* make it in the window
fifo.put('hehe')
fifo.put('haha')
fifo.put('hoho')
self.len(4, fifo.wind.dequ)
self.false(fifo.wind.caught)
# ack 0 should shrink the window, but not fill()
self.true(fifo.ack(sent[0][0]))
self.len(3, fifo.wind.dequ)
# ack next should trigger fill and load hehe/haha
# but still not catch us up...
self.true(fifo.ack(sent[1][0]))
self.len(6, sent)
self.len(4, fifo.wind.dequ)
self.false(fifo.wind.caught)
# ack skip to the window end (which should also set caught)
self.true(fifo.ack(sent[-1][0]))
self.len(7, sent)
self.true(fifo.wind.caught)
# now that we are caught up again, a put should xmit
fifo.put('visi')
self.eq(sent[-1][2], 'visi')
# now lets check starting with an existing one...
with s_fifo.Fifo(conf) as fifo:
sent = []
fifo.resync(xmit=sent.append)
self.eq(sent[0][2], 'hoho')
self.eq(sent[1][2], 'visi')
self.true(fifo.wind.caught)
# send a skip ack
fifo.ack(sent[1][0])
# put in enough messages to cause file next
while fifo.atom.size != 0:
fifo.put('whee')
self.len(2, fifo.seqs)
self.false(fifo.wind.caught)
# put in enough that when we jump over to
# reading this file, we will not be caught up
fifo.put('foo1')
fifo.put('bar1')
fifo.put('baz1')
fifo.put('faz1')
fifo.put('zip1')
self.true(os.path.isfile(fifo._getSeqPath(0)))
while sent[-1][2] == 'whee':
fifo.ack(sent[-1][0])
self.len(1, fifo.seqs)
self.none(fifo.atoms.get(0))
self.false(os.path.isfile(fifo._getSeqPath(0)))
# the last message should be one of the following
# ( we may not know exactly which due to whee mod math )
self.true(sent[-1][2] in ('foo1', 'bar1', 'baz1', 'faz1'))
self.false(fifo.wind.caught)
# by acking until faz1 we will fill zip1 into the window
# and cause ourselves to be caught up again...
# faz1 should be lifted into the window
while sent[-1][2] != 'zip1':
fifo.ack(sent[-1][0])
self.true(fifo.wind.caught)