def _test_log_rotation_external_trigger_recovery(command):
host = '127.0.0.1'
sources = 1
workers = 2
res_dir = tempfile.mkdtemp(dir='/tmp/', prefix='res-data.')
expect = 2000
last_value_0 = '[{}]'.format(','.join(
(str(expect - v) for v in range(6, -2, -2))))
last_value_1 = '[{}]'.format(','.join(
(str(expect - 1 - v) for v in range(6, -2, -2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
setup_resilience_path(res_dir)
command = '''{} \
--log-rotation \
--stop-pause {}
'''.format(command, STOP_THE_WORLD_PAUSE)
runners = []
try:
# Create sink, metrics, reader, sender
sink = Sink(host)
metrics = Metrics(host)
reader = Reader(sequence_generator(expect))
# Start sink and metrics, and get their connection info
sink.start()
sink_host, sink_port = sink.get_connection_info()
outputs = '{}:{}'.format(sink_host, sink_port)
metrics.start()
metrics_host, metrics_port = metrics.get_connection_info()
time.sleep(0.05)
num_ports = sources + 3 + (2 * (workers - 1))
ports = get_port_values(num=num_ports, host=host)
(input_ports, (control_port, data_port, external_port),
worker_ports) = (ports[:sources], ports[sources:sources + 3],
zip(ports[-(2 * (workers - 1)):][::2],
ports[-(2 * (workers - 1)):][1::2]))
inputs = ','.join(['{}:{}'.format(host, p) for p in input_ports])
start_runners(runners, command, host, inputs, outputs, metrics_port,
control_port, external_port, data_port, res_dir, workers,
worker_ports)
# Wait for first runner (initializer) to report application ready
runner_ready_checker = RunnerReadyChecker(runners, timeout=30)
runner_ready_checker.start()
runner_ready_checker.join()
if runner_ready_checker.error:
raise runner_ready_checker.error
# start sender
sender = Sender(host,
input_ports[0],
reader,
batch_size=100,
interval=0.05)
sender.start()
time.sleep(0.5)
# Trigger log rotation with external message
cmd_external_trigger = ('external_sender -e {}:{} -t rotate-log -m '
'worker1'.format(host, external_port))
success, stdout, retcode, cmd = ex_validate(cmd_external_trigger)
try:
assert (success)
except AssertionError:
raise AssertionError('External rotation trigger failed with '
'the error:\n{}'.format(stdout))
# Check for log rotation
log_rotated_checker = RunnerChecker(runners[1],
log_rotated_patterns,
timeout=AWAIT_TIMEOUT)
log_rotated_checker.start()
log_rotated_checker.join()
if log_rotated_checker.error:
raise log_rotated_checker.error
# stop worker in a non-graceful fashion so that recovery files
# aren't removed
runners[-1].kill()
## restart worker
runners.append(runners[-1].respawn())
runners[-1].start()
# wait until sender completes (~1 second)
sender.join(30)
if sender.error:
raise sender.error
if sender.is_alive():
sender.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# Use metrics to determine when to stop runners and sink
stopper = SinkAwaitValue(sink, await_values, AWAIT_TIMEOUT)
stopper.start()
stopper.join()
if stopper.error:
for r in runners:
print r.name
print r.get_output()
print '---'
raise stopper.error
# stop application workers
for r in runners:
r.stop()
# Stop sink
sink.stop()
print 'sink.data size: ', len(sink.data)
# Use validator to validate the data in at-least-once mode
# save sink data to a file
out_file = os.path.join(res_dir, 'received.txt')
sink.save(out_file, mode='giles')
# Validate captured output
cmd_validate = ('validator -i {out_file} -e {expect} -a'.format(
out_file=out_file, expect=expect))
success, stdout, retcode, cmd = ex_validate(cmd_validate)
try:
assert (success)
except AssertionError:
print runners[0].name
print runners[0].get_output()
print '---'
print runners[1].name
print runners[1].get_output()
print '---'
raise AssertionError('Validation failed with the following '
'error:\n{}'.format(stdout))
# Validate all workers underwent log rotation
r = runners[1]
stdout = r.get_output()
try:
assert (re.search(log_rotated_pattern, stdout, re.M | re.S)
is not None)
except AssertionError:
raise AssertionError('Worker %d.%r does not appear to have '
'performed log rotation as expected.'
' The pattern %r '
'is missing form the Worker output '
'included below.\nSTDOUT\n---\n%s\n'
'---\n' %
(1, r.name, log_rotated_pattern, stdout))
# Validate worker actually underwent recovery
pattern = "RESILIENCE\: Replayed \d+ entries from recovery log file\."
stdout = runners[-1].get_output()
try:
assert (re.search(pattern, stdout) is not None)
except AssertionError:
raise AssertionError('Worker %d.%r does not appear to have '
'performed recovery as expected. Worker '
'output is '
'included below.\nSTDOUT\n---\n%s' %
(len(runners) - 1, runners[-1].name, stdout))
finally:
for r in runners:
r.stop()
clean_resilience_path(res_dir)
def _test_recovery(command):
host = '127.0.0.1'
sources = 1
workers = 2
res_dir = '/tmp/res-data'
expect = 2000
last_value_0 = '[{}]'.format(','.join(
(str(expect - v) for v in range(6, -2, -2))))
last_value_1 = '[{}]'.format(','.join(
(str(expect - 1 - v) for v in range(6, -2, -2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
setup_resilience_path(res_dir)
runners = []
try:
# Create sink, metrics, reader, sender
sink = Sink(host)
metrics = Metrics(host)
reader = Reader(sequence_generator(expect))
# Start sink and metrics, and get their connection info
sink.start()
sink_host, sink_port = sink.get_connection_info()
outputs = '{}:{}'.format(sink_host, sink_port)
metrics.start()
metrics_host, metrics_port = metrics.get_connection_info()
time.sleep(0.05)
input_ports, control_port, external_port, data_port = (get_port_values(
host, sources))
inputs = ','.join(['{}:{}'.format(host, p) for p in input_ports])
start_runners(runners, command, host, inputs, outputs, metrics_port,
control_port, external_port, data_port, res_dir, workers)
# Wait for first runner (initializer) to report application ready
runner_ready_checker = RunnerReadyChecker(runners, timeout=30)
runner_ready_checker.start()
runner_ready_checker.join()
if runner_ready_checker.error:
raise runner_ready_checker.error
# start sender
sender = Sender(host,
input_ports[0],
reader,
batch_size=100,
interval=0.05)
sender.start()
time.sleep(0.2)
# simulate worker crash by doing a non-graceful shutdown
runners[-1].kill()
## restart worker
runners.append(runners[-1].respawn())
runners[-1].start()
# wait until sender completes (~1 second)
sender.join(5)
if sender.error:
raise sender.error
if sender.is_alive():
sender.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# Use metrics to determine when to stop runners and sink
stopper = SinkAwaitValue(sink, await_values, 30)
stopper.start()
stopper.join()
if stopper.error:
raise stopper.error
# stop application workers
for r in runners:
r.stop()
# Stop sink
sink.stop()
print 'sink.data size: ', len(sink.data)
# Use validator to validate the data in at-least-once mode
# save sink data to a file
out_file = os.path.join(res_dir, 'received.txt')
sink.save(out_file, mode='giles')
# Validate captured output
cmd_validate = ('validator -i {out_file} -e {expect} -a'.format(
out_file=out_file, expect=expect))
success, stdout, retcode, cmd = ex_validate(cmd_validate)
try:
assert (success)
except AssertionError:
print runners[-1].get_output()[0]
print '---'
print runners[-2].get_output()[0]
print '---'
raise AssertionError('Validation failed with the following '
'error:\n{}'.format(stdout))
# Validate worker actually underwent recovery
pattern = "RESILIENCE\: Replayed \d+ entries from recovery log file\."
stdout, stderr = runners[-1].get_output()
try:
assert (re.search(pattern, stdout) is not None)
except AssertionError:
raise AssertionError('Worker does not appear to have performed '
'recovery as expected. Worker output is '
'included below.\nSTDOUT\n---\n%s\n---\n'
'STDERR\n---\n%s' % (stdout, stderr))
finally:
for r in runners:
r.stop()
def _run(command, runner_data=[]):
host = '127.0.0.1'
sources = 1
sinks = 1
sink_mode = 'framed'
workers = 2
expect = 2000
last_value_0 = '[{}]'.format(','.join(
(str(expect - v) for v in range(6, -2, -2))))
last_value_1 = '[{}]'.format(','.join(
(str(expect - 1 - v) for v in range(6, -2, -2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
# Start cluster
with Cluster(command=command,
host=host,
sources=sources,
workers=workers,
sinks=sinks,
sink_mode=sink_mode,
runner_data=runner_data) as cluster:
# Create sender
logging.debug("Creating sender")
sender = Sender(cluster.source_addrs[0],
Reader(sequence_generator(expect)),
batch_size=100,
interval=0.05,
reconnect=True)
cluster.add_sender(sender, start=True)
# wait for some data to go through the system
time.sleep(0.2)
# stop worker in a non-graceful fashion so that recovery files
# aren't removed
logging.debug("Killing worker")
killed = cluster.kill_worker(worker=-1)
## restart worker
logging.debug("Restarting worker")
cluster.restart_worker(killed)
# wait until sender completes (~1 second)
logging.debug("Waiting for sender to complete")
cluster.wait_for_sender()
# Wait for the last sent value expected at the worker
logging.debug("Waiting for sink to complete")
cluster.sink_await(await_values)
# stop the cluster
logging.debug("Stopping cluster")
cluster.stop_cluster()
# Use validator to validate the data in at-least-once mode
# save sink data to a file
out_file = os.path.join(cluster.res_dir, 'received.txt')
cluster.sinks[0].save(out_file, mode='giles')
# Validate captured output
logging.debug("Validating output")
cmd_validate = ('validator -i {out_file} -e {expect} -a'.format(
out_file=out_file, expect=expect))
res = run_shell_cmd(cmd_validate)
try:
assert (res.success)
except AssertionError:
raise AssertionError('Output validation failed with the following '
'error:\n{}'.format(res.output))
# Validate worker actually underwent recovery
logging.debug("Validating recovery from worker stdout")
pattern = "RESILIENCE\: Replayed \d+ entries from recovery log file\."
try:
assert (re.search(pattern, cluster.runners[-1].get_output())
is not None)
except AssertionError:
raise AssertionError("Worker does not appear to have performed "
"recovery as expected.")
def _run(command, persistent_data):
host = '127.0.0.1'
sources = 1
sinks = 1
sink_mode = 'framed'
workers = 2
expect = 200
last_value_0 = '[{}]'.format(','.join(
(str(expect - v) for v in range(6, -2, -2))))
last_value_1 = '[{}]'.format(','.join(
(str(expect - 1 - v) for v in range(6, -2, -2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
# Start cluster
with Cluster(command=command,
host=host,
sources=sources,
workers=workers,
sinks=sinks,
sink_mode=sink_mode,
persistent_data=persistent_data) as cluster:
# Create sender
logging.debug("Creating sender")
sender = Sender(cluster.source_addrs[0],
Reader(sequence_generator(expect)),
batch_size=1,
interval=0.05,
reconnect=True)
cluster.add_sender(sender, start=True)
# wait for some data to go through the system
time.sleep(0.5)
# stop worker in a non-graceful fashion so that recovery files
# aren't removed
logging.debug("Killing worker")
killed = cluster.kill_worker(worker=-1)
## restart worker
logging.debug("Restarting worker")
cluster.restart_worker(killed)
# wait until sender completes (~1 second)
logging.debug("Waiting for sender to complete")
cluster.wait_for_sender()
# Wait for the last sent value expected at the worker
logging.debug("Waiting for sink to complete")
cluster.sink_await(await_values)
# stop the cluster
logging.debug("Stopping cluster")
cluster.stop_cluster()
logging.debug("validating restarted worker stdout")
# Validate worker actually underwent recovery
pattern_restarting = "Restarting a listener ..."
try:
assert (re.search(pattern_restarting,
persistent_data['runner_data'][2].stdout)
is not None)
except AssertionError:
raise AssertionError('Worker does not appear to have reconnected '
'as expected. Worker output is '
'included below.\nSTDOUT\n---\n%s' % stdout)
def _test_log_rotation_file_size_trigger_recovery(command):
host = '127.0.0.1'
sources = 1
workers = 2
res_dir = '/tmp/res-data'
expect = 2000
event_log_file_size = 50000
last_value_0 = '[{}]'.format(','.join(
(str(expect - v) for v in range(6, -2, -2))))
last_value_1 = '[{}]'.format(','.join(
(str(expect - 1 - v) for v in range(6, -2, -2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
setup_resilience_path(res_dir)
command = '''{} \
--log-rotation \
--stop-pause {}
'''.format(command, STOP_THE_WORLD_PAUSE)
alt_block = '--event-log-file-size {}'.format(event_log_file_size)
alt_func = lambda x: x > 0
runners = []
try:
# Create sink, metrics, reader, sender
sink = Sink(host)
metrics = Metrics(host)
reader = Reader(sequence_generator(expect))
# Start sink and metrics, and get their connection info
sink.start()
sink_host, sink_port = sink.get_connection_info()
outputs = '{}:{}'.format(sink_host, sink_port)
metrics.start()
metrics_host, metrics_port = metrics.get_connection_info()
time.sleep(0.05)
input_ports, control_port, external_port, data_port = (get_port_values(
host, sources))
inputs = ','.join(['{}:{}'.format(host, p) for p in input_ports])
start_runners(runners, command, host, inputs, outputs, metrics_port,
control_port, external_port, data_port, res_dir, workers,
alt_block, alt_func)
# Wait for first runner (initializer) to report application ready
runner_ready_checker = RunnerReadyChecker(runners[0], timeout=30)
runner_ready_checker.start()
runner_ready_checker.join()
if runner_ready_checker.error:
raise runner_ready_checker.error
# start sender
sender = Sender(host,
input_ports[0],
reader,
batch_size=100,
interval=0.05)
sender.start()
# Wait for runner to complete a log rotation
log_rotated_checker = RunnerChecker(runners[1],
log_rotated_patterns,
timeout=AWAIT_TIMEOUT)
log_rotated_checker.start()
log_rotated_checker.join()
if log_rotated_checker.error:
raise log_rotated_checker.error
# stop worker
runners[-1].stop()
## restart worker
runners.append(runners[-1].respawn())
runners[-1].start()
# wait until sender completes (~1 second)
sender.join(30)
if sender.error:
raise sender.error
if sender.is_alive():
sender.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# Use metrics to determine when to stop runners and sink
stopper = SinkAwaitValue(sink, await_values, AWAIT_TIMEOUT)
stopper.start()
stopper.join()
if stopper.error:
for r in runners:
print r.name
print r.get_output()[0]
print '---'
raise stopper.error
# stop application workers
for r in runners:
r.stop()
# Stop sink
sink.stop()
print 'sink.data size: ', len(sink.data)
# Use validator to validate the data in at-least-once mode
# save sink data to a file
out_file = os.path.join(res_dir, 'received.txt')
sink.save(out_file, mode='giles')
# Validate captured output
cmd_validate = ('validator -i {out_file} -e {expect} -a'.format(
out_file=out_file, expect=expect))
success, stdout, retcode, cmd = ex_validate(cmd_validate)
try:
assert (success)
except AssertionError:
print runners[-1].name
print runners[-1].get_output()[0]
print '---'
print runners[-2].name
print runners[-2].get_output()[0]
print '---'
raise AssertionError('Validation failed with the following '
'error:\n{}'.format(stdout))
# Validate worker underwent log rotation, but not initializer
i, r = 1, runners[1]
stdout, stderr = r.get_output()
try:
assert (re.search(log_rotated_pattern, stdout, re.M | re.S)
is not None)
except AssertionError:
raise AssertionError('Worker %d.%r does not appear to have '
'performed log rotation as expected.'
' The pattern %r '
'is missing form the Worker output '
'included below.\nSTDOUT\n---\n%s\n'
'---\n' %
(i, r.name, log_rotated_pattern, stdout))
# Validate worker actually underwent recovery
pattern = "RESILIENCE\: Replayed \d+ entries from recovery log file\."
stdout, stderr = runners[-1].get_output()
try:
assert (re.search(pattern, stdout) is not None)
except AssertionError:
raise AssertionError('Worker does not appear to have performed '
'recovery as expected. Worker output is '
'included below.\nSTDOUT\n---\n%s\n---\n'
'STDERR\n---\n%s' % (stdout, stderr))
finally:
for r in runners:
r.stop()
clean_up_resilience_path(res_dir)
def _test_restart(command):
host = '127.0.0.1'
sources = 1
workers = 2
res_dir = tempfile.mkdtemp(dir='/tmp/', prefix='res-data.')
expect = 200
last_value_0 = '[{}]'.format(','.join((str(expect-v) for v in range(6,-2,-2))))
last_value_1 = '[{}]'.format(','.join((str(expect-1-v) for v in range(6,-2,-2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
setup_resilience_path(res_dir)
runners = []
try:
# Create sink, metrics, reader, sender
sink = Sink(host)
metrics = Metrics(host)
reader = Reader(sequence_generator(expect))
# Start sink and metrics, and get their connection info
sink.start()
sink_host, sink_port = sink.get_connection_info()
outputs = '{}:{}'.format(sink_host, sink_port)
metrics.start()
metrics_host, metrics_port = metrics.get_connection_info()
time.sleep(0.05)
num_ports = sources + 3 + (2 * (workers - 1))
ports = get_port_values(num=num_ports, host=host)
(input_ports, (control_port, data_port, external_port),
worker_ports) = (ports[:sources],
ports[sources:sources+3],
zip(ports[-(2*(workers-1)):][::2],
ports[-(2*(workers-1)):][1::2]))
inputs = ','.join(['{}:{}'.format(host, p) for p in
input_ports])
start_runners(runners, command, host, inputs, outputs,
metrics_port, control_port, external_port, data_port,
res_dir, workers, worker_ports)
# Wait for first runner (initializer) to report application ready
runner_ready_checker = RunnerReadyChecker(runners, timeout=30)
runner_ready_checker.start()
runner_ready_checker.join()
if runner_ready_checker.error:
raise runner_ready_checker.error
# start sender
sender = Sender(host, input_ports[0], reader, batch_size=1,
interval=0.05, reconnect=True)
sender.start()
time.sleep(0.2)
# stop worker in a non-graceful fashion so that recovery files
# aren't removed
runners[-1].kill()
## restart worker
runners.append(runners[-1].respawn())
runners[-1].start()
# wait until sender completes (~1 second)
sender.join(30)
if sender.error:
raise sender.error
if sender.is_alive():
sender.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# Wait for the last sent value expected at the worker
stopper = SinkAwaitValue(sink, await_values, 30)
stopper.start()
stopper.join()
if stopper.error:
for r in runners:
print r.name
print r.get_output()
print '---'
print 'sink data'
print sink.data
print '---'
raise stopper.error
# stop application workers
for r in runners:
r.stop()
# Stop sink
sink.stop()
# Validate worker actually underwent recovery
pattern_restarting = "Restarting a listener ..."
stdout = runners[-1].get_output()
try:
assert(re.search(pattern_restarting, stdout) is not None)
except AssertionError:
raise AssertionError('Worker does not appear to have reconnected '
'as expected. Worker output is '
'included below.\nSTDOUT\n---\n%s'
% stdout)
finally:
for r in runners:
r.stop()
clean_resilience_path(res_dir)
def _test_autoscale_grow(command):
host = '127.0.0.1'
sources = 1
workers = 1
res_dir = '/tmp/res-data'
expect = 2000
last_value_0 = '[{}]'.format(','.join(
(str(expect - v) for v in range(6, -2, -2))))
last_value_1 = '[{}]'.format(','.join(
(str(expect - 1 - v) for v in range(6, -2, -2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
patterns_i = [
re.escape(r'***Worker worker1 attempting to join the '
r'cluster. Sent necessary information.***'),
re.escape(r'Migrating partitions to worker1'),
re.escape(r'--All new workers have acked migration '
r'batch complete'),
re.escape(r'~~~Resuming message processing.~~~')
]
patterns_w = [
re.escape(r'***Successfully joined cluster!***'),
re.escape(r'~~~Resuming message processing.~~~')
]
setup_resilience_path(res_dir)
runners = []
try:
# Create sink, metrics, reader, sender
sink = Sink(host)
metrics = Metrics(host)
reader1 = Reader(sequence_generator(expect - 1000))
reader2 = Reader(sequence_generator(expect, 1000))
# Start sink and metrics, and get their connection info
sink.start()
sink_host, sink_port = sink.get_connection_info()
outputs = '{}:{}'.format(sink_host, sink_port)
metrics.start()
metrics_host, metrics_port = metrics.get_connection_info()
time.sleep(0.05)
input_ports, control_port, external_port, data_port = (get_port_values(
host, sources))
inputs = ','.join(['{}:{}'.format(host, p) for p in input_ports])
start_runners(runners, command, host, inputs, outputs, metrics_port,
control_port, external_port, data_port, res_dir, workers)
# Wait for first runner (initializer) to report application ready
runner_ready_checker = RunnerReadyChecker(runners, timeout=30)
runner_ready_checker.start()
runner_ready_checker.join()
if runner_ready_checker.error:
raise runner_ready_checker.error
# start sender1 (0,1000]
sender1 = Sender(host,
input_ports[0],
reader1,
batch_size=10,
interval=0.05)
sender1.start()
# wait until sender1 completes (~5 seconds)
sender1.join(30)
if sender1.error:
raise sender1.error
if sender1.is_alive():
sender1.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# create a new worker and have it join
add_runner(runners, command, host, inputs, outputs, metrics_port,
control_port, external_port, data_port, res_dir, workers)
# Wait for runner to complete a log rotation
join_checker_i = RunnerChecker(runners[0], patterns_i, timeout=30)
join_checker_w = RunnerChecker(runners[1], patterns_w, timeout=30)
join_checker_i.start()
join_checker_w.start()
join_checker_i.join()
if join_checker_i.error:
print('worker output:')
print(runners[1].get_output()[0])
raise join_checker_i.error
join_checker_w.join()
if join_checker_w.error:
print('initalizer output:')
print(runners[0].get_output()[0])
raise join_checker_w.error
# Start sender2 (1000, 2000]
sender2 = Sender(host,
input_ports[0],
reader2,
batch_size=10,
interval=0.05)
sender2.start()
# wait until sender2 completes (~5 seconds)
sender2.join(30)
if sender2.error:
raise sender2.error
if sender2.is_alive():
sender2.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# Use Sink value to determine when to stop runners and sink
stopper = SinkAwaitValue(sink, await_values, 30)
stopper.start()
stopper.join()
if stopper.error:
raise stopper.error
# stop application workers
for r in runners:
r.stop()
# Stop sink
sink.stop()
print 'sink.data size: ', len(sink.data)
# Stop metrics
metrics.stop()
# parse metrics data and validate worker has shifted from 1 to 2
# workers
mp = MetricsParser()
mp.load_string_list(metrics.data)
mp.parse()
# Now confirm that there are computations in worker1's metrics
app_key = mp.data.keys()[0] # 'metrics:Sequence Window Printer'
worker_metrics = [
v for v in mp.data[app_key].get('worker1', []) if v[0] == 'metrics'
]
# Verify there is at least one entry for a computation with a nonzero
# total value
print('worker_metrics', worker_metrics)
filtered = filter(
lambda v:
(v[1]['metric_category'] == 'computation' and v[1]['total'] > 0),
worker_metrics)
print('filtered', filtered)
assert (len(filtered) > 0)
# Use validator to validate the data in at-least-once mode
# save sink data to a file
out_file = os.path.join(res_dir, 'received.txt')
sink.save(out_file, mode='giles')
# Validate captured output
cmd_validate = ('validator -i {out_file} -e {expect} -a'.format(
out_file=out_file, expect=expect))
success, stdout, retcode, cmd = ex_validate(cmd_validate)
try:
assert (success)
except AssertionError:
print runners[-1].get_output()[0]
print '---'
print runners[-2].get_output()[0]
print '---'
raise AssertionError('Validation failed with the following '
'error:\n{}'.format(stdout))
finally:
for r in runners:
r.stop()
def _test_log_rotation_file_size_trigger_no_recovery(command):
host = '127.0.0.1'
sources = 1
workers = 2
res_dir = tempfile.mkdtemp(dir='/tmp/', prefix='res-data.')
expect = 2000
event_log_file_size = 50000
last_value_0 = '[{}]'.format(','.join((str(expect-v)
for v in range(6,-2,-2))))
last_value_1 = '[{}]'.format(','.join((str(expect-1-v)
for v in range(6,-2,-2))))
await_values = (struct.pack('>I', len(last_value_0)) + last_value_0,
struct.pack('>I', len(last_value_1)) + last_value_1)
setup_resilience_path(res_dir)
command = '''{} \
--log-rotation \
--event-log-file-size {} \
--stop-pause {}
'''.format(command, event_log_file_size, STOP_THE_WORLD_PAUSE)
runners = []
try:
# Create sink, metrics, reader, sender
sink = Sink(host)
metrics = Metrics(host)
reader = Reader(sequence_generator(expect))
# Start sink and metrics, and get their connection info
sink.start()
sink_host, sink_port = sink.get_connection_info()
outputs = '{}:{}'.format(sink_host, sink_port)
metrics.start()
metrics_host, metrics_port = metrics.get_connection_info()
time.sleep(0.05)
num_ports = sources + 3 * workers
ports = get_port_values(num=num_ports, host=host)
(input_ports, worker_ports) = (
ports[:sources],
[ports[sources:][i:i+3] for i in xrange(0,
len(ports[sources:]), 3)])
inputs = ','.join(['{}:{}'.format(host, p) for p in
input_ports])
start_runners(runners, command, host, inputs, outputs,
metrics_port, res_dir, workers, worker_ports)
# Wait for first runner (initializer) to report application ready
runner_ready_checker = RunnerReadyChecker(runners, timeout=30)
runner_ready_checker.start()
runner_ready_checker.join()
if runner_ready_checker.error:
raise runner_ready_checker.error
# start sender
sender = Sender(host, input_ports[0], reader, batch_size=100,
interval=0.05)
sender.start()
# wait until sender completes (~1 second)
sender.join(30)
if sender.error:
raise sender.error
if sender.is_alive():
sender.stop()
raise TimeoutError('Sender did not complete in the expected '
'period')
# Use metrics to determine when to stop runners and sink
stopper = SinkAwaitValue(sink, await_values, AWAIT_TIMEOUT)
stopper.start()
stopper.join()
if stopper.error:
for r in runners:
print r.name
print r.get_output()
print '---'
raise stopper.error
# stop application workers
for r in runners:
r.stop()
# Stop sink
sink.stop()
print 'sink.data size: ', len(sink.data)
# Use validator to validate the data in at-least-once mode
# save sink data to a file
out_file = os.path.join(res_dir, 'received.txt')
sink.save(out_file, mode='giles')
# Validate captured output
cmd_validate = ('validator -i {out_file} -e {expect} -a'
.format(out_file = out_file,
expect = expect))
res = run_shell_cmd(cmd_validate)
try:
assert(res.success)
except AssertionError:
print runners[0].get_output()
print '---'
print runners[1].get_output()
print '---'
raise AssertionError('Validation failed with the following '
'error:\n{}'.format(res.output))
# Validate all workers underwent log rotation
for r in runners:
stdout = r.get_output()
try:
assert(re.search(log_rotated_pattern, stdout, re.M | re.S)
is not None)
except AssertionError:
raise AssertionError('Worker %r does not appear to have '
'performed log rotation as expected.'
' The pattern %r '
'is missing form the Worker output '
'included below.\nSTDOUT\n---\n%s\n'
'---\n'
% (r.name, log_rotated_pattern, stdout))
finally:
for r in runners:
r.stop()
clean_resilience_path(res_dir)
