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Execute container commands in parallel

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Commands able to use this parallelisation are `stop`, `kill` and `rm`.

We're using a backported function from python 3, to allow us to make
the most of a pool of threads without having to write the low level
code for managing this ourselves.

A default value for number of threads is a low enough number so it
shouldn't cause performance problems but if someone knows the
capability of their system and wants to increase it, they can via
an environment variable DEFAULT_MAX_WORKERS

Signed-off-by: Mazz Mosley <mazz@houseofmnowster.com>
This commit is contained in:
Mazz Mosley 2015-07-13 14:03:44 +01:00
commit a68ca199a2
6 changed files with 52 additions and 12 deletions
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22
compose/project.py
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@ -1,15 +1,16 @@
from __future__ import unicode_literals
from __future__ import absolute_import
import logging
from functools import reduce
import logging
from docker.errors import APIError
from .config import get_service_name_from_net, ConfigurationError
from .const import LABEL_PROJECT, LABEL_SERVICE, LABEL_ONE_OFF, DEFAULT_TIMEOUT
from .service import Service
from .const import DEFAULT_TIMEOUT, LABEL_PROJECT, LABEL_SERVICE, LABEL_ONE_OFF
from .container import Container
from .legacy import check_for_legacy_containers
from .service import Service
from .utils import parallel_execute
log = logging.getLogger(__name__)
@ -197,12 +198,15 @@ class Project(object):
service.start(**options)
def stop(self, service_names=None, **options):
for service in reversed(self.get_services(service_names)):
service.stop(**options)
parallel_execute("stop", self.containers(service_names), "Stopping", "Stopped", **options)
def kill(self, service_names=None, **options):
for service in reversed(self.get_services(service_names)):
service.kill(**options)
parallel_execute("kill", self.containers(service_names), "Killing", "Killed", **options)
def remove_stopped(self, service_names=None, **options):
all_containers = self.containers(service_names, stopped=True)
stopped_containers = [c for c in all_containers if not c.is_running]
parallel_execute("remove", stopped_containers, "Removing", "Removed", **options)
def restart(self, service_names=None, **options):
for service in self.get_services(service_names):
@ -284,10 +288,6 @@ class Project(object):
for service in self.get_services(service_names, include_deps=True):
service.pull(insecure_registry=insecure_registry)
def remove_stopped(self, service_names=None, **options):
for service in self.get_services(service_names):
service.remove_stopped(**options)
def containers(self, service_names=None, stopped=False, one_off=False):
if service_names:
self.validate_service_names(service_names)