def main():
args = parse_args()
processor = TaskProcessor()
processor.load_plugin(provider_module='task_processing.plugins.mesos')
mesos_executor = processor.executor_from_config(provider='mesos_task',
provider_config={
'secret': args.secret,
'mesos_address':
args.master,
'pool': args.pool,
'role': args.role,
})
executor = processor.executor_from_config(provider='logging',
provider_config={
'downstream_executor':
mesos_executor,
})
TaskConfig = mesos_executor.TASK_CONFIG_INTERFACE
runner = Sync(executor=executor)
task_config = TaskConfig(
image="ubuntu:14.04",
cmd="bash -c 'for i in $(seq 1 5); do echo $i&&sleep 10; done'")
result = runner.run(task_config)
print(result)
runner.stop()
def main():
args = parse_args()
processor = TaskProcessor()
processor.load_plugin(provider_module='task_processing.plugins.mesos')
mesos_executor = processor.executor_from_config(provider='mesos_task',
provider_config={
'secret': args.secret,
'mesos_address':
args.master,
'pool': args.pool,
'role': args.role,
})
executor = processor.executor_from_config(provider='timeout',
provider_config={
'downstream_executor':
mesos_executor,
})
TaskConfig = mesos_executor.TASK_CONFIG_INTERFACE
runner = Sync(executor=executor)
task_config = TaskConfig(image='docker-dev.yelpcorp.com/dumb-busybox',
cmd='exec dumb-init /bin/sleep 30',
timeout=10)
result = runner.run(task_config)
print(result)
runner.stop()
def run_task(executor, task_config):
""" Runs a task until a terminal event is received, which is returned. """
runner = Sync(executor)
set_runner_signal_handlers(runner)
terminal_event = runner.run(task_config)
if getattr(terminal_event, 'platform_type', None) == 'lost':
runner.kill(task_config.task_id)
runner.stop()
return terminal_event
def main():
# get address of the Mesos cluster
mesos_address = os.getenv('MESOS', 'mesosmaster:5050')
# read in secret, this is used to authenticate the taskproc scheduler with
# Mesos
with open('./examples/cluster/secret') as f:
secret = f.read().strip()
# create a processor instance
processor = TaskProcessor()
# configure plugins
processor.load_plugin(provider_module='task_processing.plugins.mesos')
# create an executor (taskproc executor NOT to be confused with a Mesos
# executor) using this defined configuration. this config can also be used
# to specify other Mesos properties, such as which role to use
executor = processor.executor_from_config(
provider='mesos_task',
provider_config={
'secret': secret,
'mesos_address': mesos_address,
'role': 'taskproc',
}
)
# creates a new Sync runner that will synchronously execute tasks
# (i.e. block until completion)
runner = Sync(executor)
# next, create a TaskConfig to run
# this is where properties of the Mesos task can be specified in this
# example, we use the busybox Docker image and just echo "hello world"
TaskConfig = executor.TASK_CONFIG_INTERFACE
task_config = TaskConfig(image="busybox", cmd='echo "hello world"')
# run our task and print the result
result = runner.run(task_config)
print(result)
# this stops the taskproc framework and unregisters it from Mesos
runner.stop()
return 0 if result.success else 1
class Promise(Runner):
def __init__(self, executor, futures_executor):
self.TASK_CONFIG_INTERFACE = executor.TASK_CONFIG_INTERFACE
self._futures_executor = futures_executor
self._runner = Sync(executor)
def run(self, task_config):
"""Schedules execution of the supplied task
:param task_config: An object satisfying the TASK_CONFIG_INTERFACE
:return: A Future object representing the execution of the task.
"""
return self._futures_executor.submit(self._runner.run, task_config)
def kill(self, task_id):
return self._runner.kill(task_id)
def reconcile(self, task_config):
self._runner.reconcile(task_config)
def stop(self):
self._runner.stop()
def main():
args = parse_args()
processor = TaskProcessor()
processor.load_plugin(provider_module='task_processing.plugins.mesos')
executor = processor.executor_from_config(provider='mesos_task',
provider_config={
'secret': args.secret,
'mesos_address': args.master,
'pool': args.pool,
'role': args.role,
})
TaskConfig = executor.TASK_CONFIG_INTERFACE
task_config = TaskConfig(image="busybox", cmd='/bin/true')
# This only works on agents that have added mesos as a containerizer
# task_config = TaskConfig(containerizer='MESOS', cmd='/bin/true')
runner = Sync(executor)
result = runner.run(task_config)
print(result)
print(result.raw)
runner.stop()
return 0 if result.success else 1
def remote_run_start(args):
system_paasta_config, service, cluster, \
soa_dir, instance, instance_type = extract_args(args)
overrides_dict = {}
constraints_json = args.constraints_json
if constraints_json:
try:
constraints = json.loads(constraints_json)
except Exception as e:
paasta_print("Error while parsing constraints: %s", e)
if constraints:
overrides_dict['constraints'] = constraints
if args.cmd:
overrides_dict['cmd'] = args.cmd
if args.instances:
overrides_dict['instances'] = args.instances
run_id = args.run_id
if run_id is None:
run_id = ''.join(
random.choice(string.ascii_uppercase + string.digits)
for _ in range(8))
paasta_print("Assigned random run-id: %s" % run_id)
if args.detach:
paasta_print("Running in background")
if os.fork() > 0:
return
os.setsid()
if os.fork() > 0:
return
sys.stdout = open('/dev/null', 'w')
sys.stderr = open('/dev/null', 'w')
paasta_print('Scheduling a task on Mesos')
processor = TaskProcessor()
processor.load_plugin(provider_module='task_processing.plugins.mesos')
processor.load_plugin(provider_module='task_processing.plugins.stateful')
MesosExecutor = processor.executor_cls(provider='mesos')
native_job_config = load_paasta_native_job_config(
service,
instance,
cluster,
soa_dir=soa_dir,
instance_type=instance_type,
config_overrides=overrides_dict,
load_deployments=not args.docker_image,
)
try:
task_config = MesosExecutor.TASK_CONFIG_INTERFACE(
**paasta_to_task_config_kwargs(
service=service,
instance=instance,
system_paasta_config=system_paasta_config,
native_job_config=native_job_config,
config_overrides=overrides_dict,
docker_image=args.docker_image,
offer_timeout=args.staging_timeout,
), )
except InvariantException as e:
if len(e.missing_fields) > 0:
paasta_print(
PaastaColors.red(
"Mesos task config is missing following fields: {}".format(
', '.join(e.missing_fields), ), ), )
elif len(e.invariant_errors) > 0:
paasta_print(
PaastaColors.red(
"Mesos task config is failing following checks: {}".format(
', '.join(str(ie)
for ie in e.invariant_errors), ), ), )
else:
paasta_print(PaastaColors.red(f"Mesos task config error: {e}"), )
traceback.print_exc()
emit_counter_metric('paasta.remote_run.start.failed', service,
instance)
sys.exit(1)
except PTypeError as e:
paasta_print(
PaastaColors.red(
f"Mesos task config is failing a type check: {e}", ), )
traceback.print_exc()
emit_counter_metric('paasta.remote_run.start.failed', service,
instance)
sys.exit(1)
def handle_interrupt(_signum, _frame):
paasta_print(
PaastaColors.red("Signal received, shutting down scheduler."), )
if runner is not None:
runner.stop()
if _signum == signal.SIGTERM:
sys.exit(143)
else:
sys.exit(1)
signal.signal(signal.SIGINT, handle_interrupt)
signal.signal(signal.SIGTERM, handle_interrupt)
default_role = system_paasta_config.get_remote_run_config().get(
'default_role')
assert default_role
try:
executor_stack = build_executor_stack(
processor=processor,
service=service,
instance=instance,
role=native_job_config.get_role() or default_role,
pool=native_job_config.get_pool(),
cluster=cluster,
run_id=run_id,
system_paasta_config=system_paasta_config,
framework_staging_timeout=args.staging_timeout,
)
runner = Sync(executor_stack)
terminal_event = runner.run(task_config)
runner.stop()
except (Exception, ValueError) as e:
paasta_print("Except while running executor stack: %s", e)
traceback.print_exc()
emit_counter_metric('paasta.remote_run.start.failed', service,
instance)
sys.exit(1)
if terminal_event.success:
paasta_print("Task finished successfully")
sys.exit(0)
else:
paasta_print(PaastaColors.red(f"Task failed: {terminal_event.raw}"), )
# This is not necessarily an infrastructure failure. It may just be a
# application failure.
emit_counter_metric('paasta.remote_run.start.failed', service,
instance)
sys.exit(1)
def remote_run_start(args):
system_paasta_config, service, cluster, soa_dir, instance, instance_type = extract_args(
args)
overrides_dict = {}
constraints_json = args.constraints_json
if constraints_json:
try:
constraints = json.loads(constraints_json)
except Exception as e:
paasta_print("Error while parsing constraints: %s", e)
if constraints:
overrides_dict['constraints'] = constraints
if args.cmd:
overrides_dict['cmd'] = args.cmd
if args.instances:
overrides_dict['instances'] = args.instances
run_id = args.run_id
if run_id is None:
run_id = ''.join(
random.choice(string.ascii_uppercase + string.digits)
for _ in range(8))
paasta_print("Assigned random run-id: %s" % run_id)
if args.detach:
paasta_print("Running in background")
if os.fork() > 0:
return
os.setsid()
if os.fork() > 0:
return
sys.stdout = open('/dev/null', 'w')
sys.stderr = open('/dev/null', 'w')
paasta_print('Scheduling a task on Mesos')
executor_stack = build_executor_stack(service, instance, run_id,
system_paasta_config,
args.staging_timeout)
runner = Sync(executor_stack)
def handle_interrupt(_signum, _frame):
paasta_print(
PaastaColors.red("Signal received, shutting down scheduler."))
runner.stop()
signal.signal(signal.SIGINT, handle_interrupt)
signal.signal(signal.SIGTERM, handle_interrupt)
task_config = MesosExecutor.TASK_CONFIG_INTERFACE(
**paasta_to_task_config_kwargs(
service,
instance,
cluster,
system_paasta_config,
instance_type=instance_type,
soa_dir=soa_dir,
config_overrides=overrides_dict,
))
terminal_event = runner.run(task_config)
runner.stop()
if terminal_event.success:
paasta_print("Task finished successfully")
sys.exit(0)
else:
paasta_print(
PaastaColors.red("Task failed: {}".format(terminal_event.raw)))
sys.exit(1)
def fake_runner(fake_executor):
runner = Sync(
executor=fake_executor,
)
yield runner
runner.stop()
