def test_tail_paasta_logs_empty_clusters():
service = 'fake_service'
levels = ['fake_level1', 'fake_level2']
components = ['deploy', 'monitoring']
clusters = []
with contextlib.nested(
mock.patch(
'paasta_tools.cli.cmds.logs.determine_scribereader_envs',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
):
determine_scribereader_envs_patch.return_value = []
fake_queue = mock.MagicMock(spec_set=Queue())
fake_queue.get.side_effect = Empty
queue_patch.return_value = fake_queue
logs.tail_paasta_logs(service, levels, components, clusters)
assert process_patch.call_count == 0
assert print_log_patch.call_count == 0
def test_tail_paasta_logs_ctrl_c_in_queue_get():
service = 'fake_service'
levels = ['fake_level1', 'fake_level2']
components = ['deploy', 'monitoring']
clusters = ['fake_cluster1', 'fake_cluster2']
with contextlib.nested(
mock.patch(
'paasta_tools.cli.cmds.logs.determine_scribereader_envs',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
):
fake_queue = mock.MagicMock(spec_set=Queue())
fake_queue.get.side_effect = FakeKeyboardInterrupt
queue_patch.return_value = fake_queue
try:
logs.tail_paasta_logs(service, levels, components, clusters)
# We have to catch this ourselves otherwise it will fool pytest too!
except FakeKeyboardInterrupt:
raise Exception(
'The code under test failed to catch a (fake) KeyboardInterrupt!'
)
def test_tail_paasta_logs_empty_clusters():
service = 'fake_service'
levels = ['fake_level1', 'fake_level2']
components = ['deploy', 'monitoring']
clusters = []
with contextlib.nested(
mock.patch('paasta_tools.cli.cmds.logs.determine_scribereader_envs', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
):
determine_scribereader_envs_patch.return_value = []
fake_queue = mock.MagicMock(spec_set=Queue())
fake_queue.get.side_effect = Empty
queue_patch.return_value = fake_queue
logs.tail_paasta_logs(service, levels, components, clusters)
assert process_patch.call_count == 0
assert print_log_patch.call_count == 0
def test_tail_paasta_logs_marathon():
service = 'fake_service'
clusters = ['fake_cluster']
levels = ['fake_level1', 'fake_level2']
components = ['marathon']
with contextlib.nested(
mock.patch('paasta_tools.cli.cmds.logs.determine_scribereader_envs', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.parse_marathon_log_line', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.marathon_log_line_passes_filter', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
parse_marathon_log_line_patch,
marathon_log_line_passes_filter_patch,
):
determine_scribereader_envs_patch.return_value = ['env1']
fake_queue = mock.MagicMock(spec_set=Queue())
# Prevent tail_paasta_logs from reading from queue forever by simulating a Ctrl-C
fake_queue.get.side_effect = KeyboardInterrupt
queue_patch.return_value = fake_queue
logs.tail_paasta_logs(service, levels, components, clusters)
assert process_patch.call_count == 1
def test_tail_paasta_logs_ctrl_c_in_is_alive():
service = 'fake_service'
levels = ['fake_level1', 'fake_level2']
components = ['deploy', 'monitoring']
clusters = ['fake_cluster1', 'fake_cluster2']
with contextlib.nested(
mock.patch('paasta_tools.cli.cmds.logs.determine_scribereader_envs', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
):
determine_scribereader_envs_patch.return_value = ['env1', 'env2']
fake_queue = mock.MagicMock(spec_set=Queue())
fake_queue.get.side_effect = Empty
queue_patch.return_value = fake_queue
fake_process = mock.MagicMock()
fake_process.is_alive.side_effect = FakeKeyboardInterrupt
process_patch.return_value = fake_process
try:
logs.tail_paasta_logs(service, levels, components, clusters)
# We have to catch this ourselves otherwise it will fool pytest too!
except FakeKeyboardInterrupt:
raise Exception('The code under test failed to catch a (fake) KeyboardInterrupt!')
def test_tail_paasta_logs_marathon():
service = 'fake_service'
clusters = ['fake_cluster']
levels = ['fake_level1', 'fake_level2']
components = ['marathon']
with contextlib.nested(
mock.patch('paasta_tools.cli.cmds.logs.determine_scribereader_envs', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.parse_marathon_log_line', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.marathon_log_line_passes_filter', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
parse_marathon_log_line_patch,
marathon_log_line_passes_filter_patch,
):
determine_scribereader_envs_patch.return_value = ['env1']
fake_queue = mock.MagicMock(spec_set=Queue())
# Prevent tail_paasta_logs from reading from queue forever by simulating a Ctrl-C
fake_queue.get.side_effect = KeyboardInterrupt
queue_patch.return_value = fake_queue
logs.tail_paasta_logs(service, levels, components, clusters)
assert process_patch.call_count == 1
def test_tail_paasta_logs_aliveness_check():
service = 'fake_service'
levels = ['fake_level1', 'fake_level2']
components = ['deploy', 'monitoring']
clusters = ['fake_cluster1', 'fake_cluster2']
with contextlib.nested(
mock.patch(
'paasta_tools.cli.cmds.logs.determine_scribereader_envs',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
):
determine_scribereader_envs_patch.return_value = ['env1', 'env2']
fake_queue = mock.MagicMock(spec_set=Queue())
fake_queue.get.side_effect = Empty
queue_patch.return_value = fake_queue
fake_process = mock.MagicMock()
is_alive_responses = [
# First time: simulate both threads being alive.
True,
True,
# Second time: simulate first thread is alive but second thread is now dead.
True,
False,
# This gets us into the kill stanza, which calls is_alive() on each
# thread again. We'll recycle our answers from the previous calls
# to is_alive() where the first thread is alive but the second
# thread is dead.
True,
False,
]
fake_process.is_alive.side_effect = is_alive_responses
process_patch.return_value = fake_process
logs.tail_paasta_logs(service, levels, components, clusters)
# is_alive() should be called on all the values we painstakingly provided above.
assert fake_process.is_alive.call_count == len(is_alive_responses)
# We only terminate the first thread, which is still alive. We don't
# terminate the second thread, which was already dead.
assert fake_process.terminate.call_count == 1
def tail_paasta_logs_let_threads_be_threads(context):
"""This test lets tail_paasta_logs() fire off processes to do work. We
verify that the work was done, basically irrespective of how it was done.
"""
service = 'fake_service'
context.levels = ['fake_level1', 'fake_level2']
context.components = ['deploy', 'monitoring']
context.clusters = ['fake_cluster1', 'fake_cluster2']
with contextlib.nested(
mock.patch(
'paasta_tools.cli.cmds.logs.determine_scribereader_envs',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail',
autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
) as (
context.determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
context.print_log_patch,
):
context.determine_scribereader_envs_patch.return_value = [
'env1', 'env2'
]
def scribe_tail_side_effect(
scribe_env,
stream_name,
service,
levels,
components,
clusters,
queue,
filter_fn,
):
# The print here is just for debugging
print 'fake log line added for %s' % scribe_env
queue.put('fake log line added for %s' % scribe_env)
# This sleep() was the straw that broke the camel's back
# and forced me to move this test into the integration
# suite. The test is flaky without the sleep, and the
# sleep make it a lousy unit test.
time.sleep(0.05)
scribe_tail_patch.side_effect = scribe_tail_side_effect
logs.tail_paasta_logs(service, context.levels, context.components,
context.clusters)
def test_tail_paasta_logs_aliveness_check():
service = 'fake_service'
levels = ['fake_level1', 'fake_level2']
components = ['deploy', 'monitoring']
clusters = ['fake_cluster1', 'fake_cluster2']
with contextlib.nested(
mock.patch('paasta_tools.cli.cmds.logs.determine_scribereader_envs', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Queue', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.Process', autospec=True),
) as (
determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
print_log_patch,
queue_patch,
process_patch,
):
determine_scribereader_envs_patch.return_value = ['env1', 'env2']
fake_queue = mock.MagicMock(spec_set=Queue())
fake_queue.get.side_effect = Empty
queue_patch.return_value = fake_queue
fake_process = mock.MagicMock()
is_alive_responses = [
# First time: simulate both threads being alive.
True, True,
# Second time: simulate first thread is alive but second thread is now dead.
True, False,
# This gets us into the kill stanza, which calls is_alive() on each
# thread again. We'll recycle our answers from the previous calls
# to is_alive() where the first thread is alive but the second
# thread is dead.
True, False,
]
fake_process.is_alive.side_effect = is_alive_responses
process_patch.return_value = fake_process
logs.tail_paasta_logs(service, levels, components, clusters)
# is_alive() should be called on all the values we painstakingly provided above.
assert fake_process.is_alive.call_count == len(is_alive_responses)
# We only terminate the first thread, which is still alive. We don't
# terminate the second thread, which was already dead.
assert fake_process.terminate.call_count == 1
def tail_paasta_logs_let_threads_be_threads(context):
"""This test lets tail_paasta_logs() fire off processes to do work. We
verify that the work was done, basically irrespective of how it was done.
"""
service = 'fake_service'
context.levels = ['fake_level1', 'fake_level2']
context.components = ['deploy', 'monitoring']
context.clusters = ['fake_cluster1', 'fake_cluster2']
with contextlib.nested(
mock.patch('paasta_tools.cli.cmds.logs.determine_scribereader_envs', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.scribe_tail', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.log', autospec=True),
mock.patch('paasta_tools.cli.cmds.logs.print_log', autospec=True),
) as (
context.determine_scribereader_envs_patch,
scribe_tail_patch,
log_patch,
context.print_log_patch,
):
context.determine_scribereader_envs_patch.return_value = ['env1', 'env2']
def scribe_tail_side_effect(
scribe_env,
stream_name,
service,
levels,
components,
clusters,
queue,
filter_fn,
):
# The print here is just for debugging
print 'fake log line added for %s' % scribe_env
queue.put('fake log line added for %s' % scribe_env)
# This sleep() was the straw that broke the camel's back
# and forced me to move this test into the integration
# suite. The test is flaky without the sleep, and the
# sleep make it a lousy unit test.
time.sleep(0.05)
scribe_tail_patch.side_effect = scribe_tail_side_effect
logs.tail_paasta_logs(service, context.levels, context.components, context.clusters)
