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|
from __future__ import absolute_import
from __future__ import print_function
from __future__ import unicode_literals
import contextlib
import functools
import json
import logging
import re
import sys
from inspect import getdoc
from operator import attrgetter
from . import errors
from . import signals
from .. import __version__
from ..config import config
from ..config import ConfigurationError
from ..config import parse_environment
from ..config.environment import Environment
from ..config.serialize import serialize_config
from ..const import DEFAULT_TIMEOUT
from ..const import IS_WINDOWS_PLATFORM
from ..progress_stream import StreamOutputError
from ..project import NoSuchService
from ..project import OneOffFilter
from ..project import ProjectError
from ..service import BuildAction
from ..service import BuildError
from ..service import ConvergenceStrategy
from ..service import ImageType
from ..service import NeedsBuildError
from .command import get_config_path_from_options
from .command import project_from_options
from .docopt_command import DocoptDispatcher
from .docopt_command import get_handler
from .docopt_command import NoSuchCommand
from .errors import UserError
from .formatter import ConsoleWarningFormatter
from .formatter import Formatter
from .log_printer import build_log_presenters
from .log_printer import LogPrinter
from .utils import get_version_info
from .utils import yesno
if not IS_WINDOWS_PLATFORM:
from dockerpty.pty import PseudoTerminal, RunOperation, ExecOperation
log = logging.getLogger(__name__)
console_handler = logging.StreamHandler(sys.stderr)
def main():
command = dispatch()
try:
command()
except (KeyboardInterrupt, signals.ShutdownException):
log.error("Aborting.")
sys.exit(1)
except (UserError, NoSuchService, ConfigurationError, ProjectError) as e:
log.error(e.msg)
sys.exit(1)
except BuildError as e:
log.error("Service '%s' failed to build: %s" % (e.service.name, e.reason))
sys.exit(1)
except StreamOutputError as e:
log.error(e)
sys.exit(1)
except NeedsBuildError as e:
log.error("Service '%s' needs to be built, but --no-build was passed." % e.service.name)
sys.exit(1)
except errors.ConnectionError:
sys.exit(1)
def dispatch():
setup_logging()
dispatcher = DocoptDispatcher(
TopLevelCommand,
{'options_first': True, 'version': get_version_info('compose')})
try:
options, handler, command_options = dispatcher.parse(sys.argv[1:])
except NoSuchCommand as e:
commands = "\n".join(parse_doc_section("commands:", getdoc(e.supercommand)))
log.error("No such command: %s\n\n%s", e.command, commands)
sys.exit(1)
setup_console_handler(console_handler, options.get('--verbose'))
return functools.partial(perform_command, options, handler, command_options)
def perform_command(options, handler, command_options):
if options['COMMAND'] in ('help', 'version'):
# Skip looking up the compose file.
handler(command_options)
return
if options['COMMAND'] == 'config':
command = TopLevelCommand(None)
handler(command, options, command_options)
return
project = project_from_options('.', options)
command = TopLevelCommand(project)
with errors.handle_connection_errors(project.client):
handler(command, command_options)
def setup_logging():
root_logger = logging.getLogger()
root_logger.addHandler(console_handler)
root_logger.setLevel(logging.DEBUG)
# Disable requests logging
logging.getLogger("requests").propagate = False
def setup_console_handler(handler, verbose):
if handler.stream.isatty():
format_class = ConsoleWarningFormatter
else:
format_class = logging.Formatter
if verbose:
handler.setFormatter(format_class('%(name)s.%(funcName)s: %(message)s'))
handler.setLevel(logging.DEBUG)
else:
handler.setFormatter(format_class())
handler.setLevel(logging.INFO)
# stolen from docopt master
def parse_doc_section(name, source):
pattern = re.compile('^([^\n]*' + name + '[^\n]*\n?(?:[ \t].*?(?:\n|$))*)',
re.IGNORECASE | re.MULTILINE)
return [s.strip() for s in pattern.findall(source)]
class TopLevelCommand(object):
"""Define and run multi-container applications with Docker.
Usage:
docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
docker-compose -h|--help
Options:
-f, --file FILE Specify an alternate compose file (default: docker-compose.yml)
-p, --project-name NAME Specify an alternate project name (default: directory name)
--verbose Show more output
-v, --version Print version and exit
-H, --host HOST Daemon socket to connect to
--tls Use TLS; implied by --tlsverify
--tlscacert CA_PATH Trust certs signed only by this CA
--tlscert CLIENT_CERT_PATH Path to TLS certificate file
--tlskey TLS_KEY_PATH Path to TLS key file
--tlsverify Use TLS and verify the remote
--skip-hostname-check Don't check the daemon's hostname against the name specified
in the client certificate (for example if your docker host
is an IP address)
Commands:
build Build or rebuild services
config Validate and view the compose file
create Create services
down Stop and remove containers, networks, images, and volumes
events Receive real time events from containers
exec Execute a command in a running container
help Get help on a command
kill Kill containers
logs View output from containers
pause Pause services
port Print the public port for a port binding
ps List containers
pull Pulls service images
restart Restart services
rm Remove stopped containers
run Run a one-off command
scale Set number of containers for a service
start Start services
stop Stop services
unpause Unpause services
up Create and start containers
version Show the Docker-Compose version information
"""
def __init__(self, project, project_dir='.'):
self.project = project
self.project_dir = '.'
def build(self, options):
"""
Build or rebuild services.
Services are built once and then tagged as `project_service`,
e.g. `composetest_db`. If you change a service's `Dockerfile` or the
contents of its build directory, you can run `docker-compose build` to rebuild it.
Usage: build [options] [SERVICE...]
Options:
--force-rm Always remove intermediate containers.
--no-cache Do not use cache when building the image.
--pull Always attempt to pull a newer version of the image.
"""
self.project.build(
service_names=options['SERVICE'],
no_cache=bool(options.get('--no-cache', False)),
pull=bool(options.get('--pull', False)),
force_rm=bool(options.get('--force-rm', False)))
def config(self, config_options, options):
"""
Validate and view the compose file.
Usage: config [options]
Options:
-q, --quiet Only validate the configuration, don't print
anything.
--services Print the service names, one per line.
"""
environment = Environment.from_env_file(self.project_dir)
config_path = get_config_path_from_options(
self.project_dir, config_options, environment
)
compose_config = config.load(
config.find(self.project_dir, config_path, environment)
)
if options['--quiet']:
return
if options['--services']:
print('\n'.join(service['name'] for service in compose_config.services))
return
print(serialize_config(compose_config))
def create(self, options):
"""
Creates containers for a service.
Usage: create [options] [SERVICE...]
Options:
--force-recreate Recreate containers even if their configuration and
image haven't changed. Incompatible with --no-recreate.
--no-recreate If containers already exist, don't recreate them.
Incompatible with --force-recreate.
--no-build Don't build an image, even if it's missing.
--build Build images before creating containers.
"""
service_names = options['SERVICE']
self.project.create(
service_names=service_names,
strategy=convergence_strategy_from_opts(options),
do_build=build_action_from_opts(options),
)
def down(self, options):
"""
Stops containers and removes containers, networks, volumes, and images
created by `up`.
By default, the only things removed are:
- Containers for services defined in the Compose file
- Networks defined in the `networks` section of the Compose file
- The default network, if one is used
Networks and volumes defined as `external` are never removed.
Usage: down [options]
Options:
--rmi type Remove images. Type must be one of:
'all': Remove all images used by any service.
'local': Remove only images that don't have a custom tag
set by the `image` field.
-v, --volumes Remove named volumes declared in the `volumes` section
of the Compose file and anonymous volumes
attached to containers.
--remove-orphans Remove containers for services not defined in the
Compose file
"""
image_type = image_type_from_opt('--rmi', options['--rmi'])
self.project.down(image_type, options['--volumes'], options['--remove-orphans'])
def events(self, options):
"""
Receive real time events from containers.
Usage: events [options] [SERVICE...]
Options:
--json Output events as a stream of json objects
"""
def format_event(event):
attributes = ["%s=%s" % item for item in event['attributes'].items()]
return ("{time} {type} {action} {id} ({attrs})").format(
attrs=", ".join(sorted(attributes)),
**event)
def json_format_event(event):
event['time'] = event['time'].isoformat()
event.pop('container')
return json.dumps(event)
for event in self.project.events():
formatter = json_format_event if options['--json'] else format_event
print(formatter(event))
sys.stdout.flush()
def exec_command(self, options):
"""
Execute a command in a running container
Usage: exec [options] SERVICE COMMAND [ARGS...]
Options:
-d Detached mode: Run command in the background.
--privileged Give extended privileges to the process.
--user USER Run the command as this user.
-T Disable pseudo-tty allocation. By default `docker-compose exec`
allocates a TTY.
--index=index index of the container if there are multiple
instances of a service [default: 1]
"""
index = int(options.get('--index'))
service = self.project.get_service(options['SERVICE'])
detach = options['-d']
if IS_WINDOWS_PLATFORM and not detach:
raise UserError(
"Interactive mode is not yet supported on Windows.\n"
"Please pass the -d flag when using `docker-compose exec`."
)
try:
container = service.get_container(number=index)
except ValueError as e:
raise UserError(str(e))
command = [options['COMMAND']] + options['ARGS']
tty = not options["-T"]
create_exec_options = {
"privileged": options["--privileged"],
"user": options["--user"],
"tty": tty,
"stdin": tty,
}
exec_id = container.create_exec(command, **create_exec_options)
if detach:
container.start_exec(exec_id, tty=tty)
return
signals.set_signal_handler_to_shutdown()
try:
operation = ExecOperation(
self.project.client,
exec_id,
interactive=tty,
)
pty = PseudoTerminal(self.project.client, operation)
pty.start()
except signals.ShutdownException:
log.info("received shutdown exception: closing")
exit_code = self.project.client.exec_inspect(exec_id).get("ExitCode")
sys.exit(exit_code)
@classmethod
def help(cls, options):
"""
Get help on a command.
Usage: help [COMMAND]
"""
if options['COMMAND']:
subject = get_handler(cls, options['COMMAND'])
else:
subject = cls
print(getdoc(subject))
def kill(self, options):
"""
Force stop service containers.
Usage: kill [options] [SERVICE...]
Options:
-s SIGNAL SIGNAL to send to the container.
Default signal is SIGKILL.
"""
signal = options.get('-s', 'SIGKILL')
self.project.kill(service_names=options['SERVICE'], signal=signal)
def logs(self, options):
"""
View output from containers.
Usage: logs [options] [SERVICE...]
Options:
--no-color Produce monochrome output.
-f, --follow Follow log output.
-t, --timestamps Show timestamps.
--tail="all" Number of lines to show from the end of the logs
for each container.
"""
containers = self.project.containers(service_names=options['SERVICE'], stopped=True)
tail = options['--tail']
if tail is not None:
if tail.isdigit():
tail = int(tail)
elif tail != 'all':
raise UserError("tail flag must be all or a number")
log_args = {
'follow': options['--follow'],
'tail': tail,
'timestamps': options['--timestamps']
}
print("Attaching to", list_containers(containers))
log_printer_from_project(
self.project,
containers,
options['--no-color'],
log_args,
event_stream=self.project.events(service_names=options['SERVICE'])).run()
def pause(self, options):
"""
Pause services.
Usage: pause [SERVICE...]
"""
containers = self.project.pause(service_names=options['SERVICE'])
exit_if(not containers, 'No containers to pause', 1)
def port(self, options):
"""
Print the public port for a port binding.
Usage: port [options] SERVICE PRIVATE_PORT
Options:
--protocol=proto tcp or udp [default: tcp]
--index=index index of the container if there are multiple
instances of a service [default: 1]
"""
index = int(options.get('--index'))
service = self.project.get_service(options['SERVICE'])
try:
container = service.get_container(number=index)
except ValueError as e:
raise UserError(str(e))
print(container.get_local_port(
options['PRIVATE_PORT'],
protocol=options.get('--protocol') or 'tcp') or '')
def ps(self, options):
"""
List containers.
Usage: ps [options] [SERVICE...]
Options:
-q Only display IDs
"""
containers = sorted(
self.project.containers(service_names=options['SERVICE'], stopped=True) +
self.project.containers(service_names=options['SERVICE'], one_off=OneOffFilter.only),
key=attrgetter('name'))
if options['-q']:
for container in containers:
print(container.id)
else:
headers = [
'Name',
'Command',
'State',
'Ports',
]
rows = []
for container in containers:
command = container.human_readable_command
if len(command) > 30:
command = '%s ...' % command[:26]
rows.append([
container.name,
command,
container.human_readable_state,
container.human_readable_ports,
])
print(Formatter().table(headers, rows))
def pull(self, options):
"""
Pulls images for services.
Usage: pull [options] [SERVICE...]
Options:
--ignore-pull-failures Pull what it can and ignores images with pull failures.
"""
self.project.pull(
service_names=options['SERVICE'],
ignore_pull_failures=options.get('--ignore-pull-failures')
)
def rm(self, options):
"""
Removes stopped service containers.
By default, anonymous volumes attached to containers will not be removed. You
can override this with `-v`. To list all volumes, use `docker volume ls`.
Any data which is not in a volume will be lost.
Usage: rm [options] [SERVICE...]
Options:
-f, --force Don't ask to confirm removal
-v Remove any anonymous volumes attached to containers
-a, --all Also remove one-off containers created by
docker-compose run
"""
if options.get('--all'):
one_off = OneOffFilter.include
else:
log.warn(
'Not including one-off containers created by `docker-compose run`.\n'
'To include them, use `docker-compose rm --all`.\n'
'This will be the default behavior in the next version of Compose.\n')
one_off = OneOffFilter.exclude
all_containers = self.project.containers(
service_names=options['SERVICE'], stopped=True, one_off=one_off
)
stopped_containers = [c for c in all_containers if not c.is_running]
if len(stopped_containers) > 0:
print("Going to remove", list_containers(stopped_containers))
if options.get('--force') \
or yesno("Are you sure? [yN] ", default=False):
self.project.remove_stopped(
service_names=options['SERVICE'],
v=options.get('-v', False),
one_off=one_off
)
else:
print("No stopped containers")
def run(self, options):
"""
Run a one-off command on a service.
For example:
$ docker-compose run web python manage.py shell
By default, linked services will be started, unless they are already
running. If you do not want to start linked services, use
`docker-compose run --no-deps SERVICE COMMAND [ARGS...]`.
Usage: run [options] [-p PORT...] [-e KEY=VAL...] SERVICE [COMMAND] [ARGS...]
Options:
-d Detached mode: Run container in the background, print
new container name.
--name NAME Assign a name to the container
--entrypoint CMD Override the entrypoint of the image.
-e KEY=VAL Set an environment variable (can be used multiple times)
-u, --user="" Run as specified username or uid
--no-deps Don't start linked services.
--rm Remove container after run. Ignored in detached mode.
-p, --publish=[] Publish a container's port(s) to the host
--service-ports Run command with the service's ports enabled and mapped
to the host.
-T Disable pseudo-tty allocation. By default `docker-compose run`
allocates a TTY.
-w, --workdir="" Working directory inside the container
"""
service = self.project.get_service(options['SERVICE'])
detach = options['-d']
if IS_WINDOWS_PLATFORM and not detach:
raise UserError(
"Interactive mode is not yet supported on Windows.\n"
"Please pass the -d flag when using `docker-compose run`."
)
if options['--publish'] and options['--service-ports']:
raise UserError(
'Service port mapping and manual port mapping '
'can not be used togather'
)
if options['COMMAND']:
command = [options['COMMAND']] + options['ARGS']
else:
command = service.options.get('command')
container_options = build_container_options(options, detach, command)
run_one_off_container(container_options, self.project, service, options)
def scale(self, options):
"""
Set number of containers to run for a service.
Numbers are specified in the form `service=num` as arguments.
For example:
$ docker-compose scale web=2 worker=3
Usage: scale [options] [SERVICE=NUM...]
Options:
-t, --timeout TIMEOUT Specify a shutdown timeout in seconds.
(default: 10)
"""
timeout = int(options.get('--timeout') or DEFAULT_TIMEOUT)
for s in options['SERVICE=NUM']:
if '=' not in s:
raise UserError('Arguments to scale should be in the form service=num')
service_name, num = s.split('=', 1)
try:
num = int(num)
except ValueError:
raise UserError('Number of containers for service "%s" is not a '
'number' % service_name)
self.project.get_service(service_name).scale(num, timeout=timeout)
def start(self, options):
"""
Start existing containers.
Usage: start [SERVICE...]
"""
containers = self.project.start(service_names=options['SERVICE'])
exit_if(not containers, 'No containers to start', 1)
def stop(self, options):
"""
Stop running containers without removing them.
They can be started again with `docker-compose start`.
Usage: stop [options] [SERVICE...]
Options:
-t, --timeout TIMEOUT Specify a shutdown timeout in seconds.
(default: 10)
"""
timeout = int(options.get('--timeout') or DEFAULT_TIMEOUT)
self.project.stop(service_names=options['SERVICE'], timeout=timeout)
def restart(self, options):
"""
Restart running containers.
Usage: restart [options] [SERVICE...]
Options:
-t, --timeout TIMEOUT Specify a shutdown timeout in seconds.
(default: 10)
"""
timeout = int(options.get('--timeout') or DEFAULT_TIMEOUT)
containers = self.project.restart(service_names=options['SERVICE'], timeout=timeout)
exit_if(not containers, 'No containers to restart', 1)
def unpause(self, options):
"""
Unpause services.
Usage: unpause [SERVICE...]
"""
containers = self.project.unpause(service_names=options['SERVICE'])
exit_if(not containers, 'No containers to unpause', 1)
def up(self, options):
"""
Builds, (re)creates, starts, and attaches to containers for a service.
Unless they are already running, this command also starts any linked services.
The `docker-compose up` command aggregates the output of each container. When
the command exits, all containers are stopped. Running `docker-compose up -d`
starts the containers in the background and leaves them running.
If there are existing containers for a service, and the service's configuration
or image was changed after the container's creation, `docker-compose up` picks
up the changes by stopping and recreating the containers (preserving mounted
volumes). To prevent Compose from picking up changes, use the `--no-recreate`
flag.
If you want to force Compose to stop and recreate all containers, use the
`--force-recreate` flag.
Usage: up [options] [SERVICE...]
Options:
-d Detached mode: Run containers in the background,
print new container names.
Incompatible with --abort-on-container-exit.
--no-color Produce monochrome output.
--no-deps Don't start linked services.
--force-recreate Recreate containers even if their configuration
and image haven't changed.
Incompatible with --no-recreate.
--no-recreate If containers already exist, don't recreate them.
Incompatible with --force-recreate.
--no-build Don't build an image, even if it's missing.
--build Build images before starting containers.
--abort-on-container-exit Stops all containers if any container was stopped.
Incompatible with -d.
-t, --timeout TIMEOUT Use this timeout in seconds for container shutdown
when attached or when containers are already
running. (default: 10)
--remove-orphans Remove containers for services not
defined in the Compose file
"""
start_deps = not options['--no-deps']
cascade_stop = options['--abort-on-container-exit']
service_names = options['SERVICE']
timeout = int(options.get('--timeout') or DEFAULT_TIMEOUT)
remove_orphans = options['--remove-orphans']
detached = options.get('-d')
if detached and cascade_stop:
raise UserError("--abort-on-container-exit and -d cannot be combined.")
with up_shutdown_context(self.project, service_names, timeout, detached):
to_attach = self.project.up(
service_names=service_names,
start_deps=start_deps,
strategy=convergence_strategy_from_opts(options),
do_build=build_action_from_opts(options),
timeout=timeout,
detached=detached,
remove_orphans=remove_orphans)
if detached:
return
log_printer = log_printer_from_project(
self.project,
filter_containers_to_service_names(to_attach, service_names),
options['--no-color'],
{'follow': True},
cascade_stop,
event_stream=self.project.events(service_names=service_names))
print("Attaching to", list_containers(log_printer.containers))
log_printer.run()
if cascade_stop:
print("Aborting on container exit...")
self.project.stop(service_names=service_names, timeout=timeout)
@classmethod
def version(cls, options):
"""
Show version informations
Usage: version [--short]
Options:
--short Shows only Compose's version number.
"""
if options['--short']:
print(__version__)
else:
print(get_version_info('full'))
def convergence_strategy_from_opts(options):
no_recreate = options['--no-recreate']
force_recreate = options['--force-recreate']
if force_recreate and no_recreate:
raise UserError("--force-recreate and --no-recreate cannot be combined.")
if force_recreate:
return ConvergenceStrategy.always
if no_recreate:
return ConvergenceStrategy.never
return ConvergenceStrategy.changed
def image_type_from_opt(flag, value):
if not value:
return ImageType.none
try:
return ImageType[value]
except KeyError:
raise UserError("%s flag must be one of: all, local" % flag)
def build_action_from_opts(options):
if options['--build'] and options['--no-build']:
raise UserError("--build and --no-build can not be combined.")
if options['--build']:
return BuildAction.force
if options['--no-build']:
return BuildAction.skip
return BuildAction.none
def build_container_options(options, detach, command):
container_options = {
'command': command,
'tty': not (detach or options['-T'] or not sys.stdin.isatty()),
'stdin_open': not detach,
'detach': detach,
}
if options['-e']:
container_options['environment'] = parse_environment(options['-e'])
if options['--entrypoint']:
container_options['entrypoint'] = options.get('--entrypoint')
if options['--rm']:
container_options['restart'] = None
if options['--user']:
container_options['user'] = options.get('--user')
if not options['--service-ports']:
container_options['ports'] = []
if options['--publish']:
container_options['ports'] = options.get('--publish')
if options['--name']:
container_options['name'] = options['--name']
if options['--workdir']:
container_options['working_dir'] = options['--workdir']
return container_options
def run_one_off_container(container_options, project, service, options):
if not options['--no-deps']:
deps = service.get_dependency_names()
if deps:
project.up(
service_names=deps,
start_deps=True,
strategy=ConvergenceStrategy.never)
project.initialize()
container = service.create_container(
quiet=True,
one_off=True,
**container_options)
if options['-d']:
service.start_container(container)
print(container.name)
return
def remove_container(force=False):
if options['--rm']:
project.client.remove_container(container.id, force=True)
signals.set_signal_handler_to_shutdown()
try:
try:
operation = RunOperation(
project.client,
container.id,
interactive=not options['-T'],
logs=False,
)
pty = PseudoTerminal(project.client, operation)
sockets = pty.sockets()
service.start_container(container)
pty.start(sockets)
exit_code = container.wait()
except signals.ShutdownException:
project.client.stop(container.id)
exit_code = 1
except signals.ShutdownException:
project.client.kill(container.id)
remove_container(force=True)
sys.exit(2)
remove_container()
sys.exit(exit_code)
def log_printer_from_project(
project,
containers,
monochrome,
log_args,
cascade_stop=False,
event_stream=None,
):
return LogPrinter(
containers,
build_log_presenters(project.service_names, monochrome),
event_stream or project.events(),
cascade_stop=cascade_stop,
log_args=log_args)
def filter_containers_to_service_names(containers, service_names):
if not service_names:
return containers
return [
container
for container in containers if container.service in service_names
]
@contextlib.contextmanager
def up_shutdown_context(project, service_names, timeout, detached):
if detached:
yield
return
signals.set_signal_handler_to_shutdown()
try:
try:
yield
except signals.ShutdownException:
print("Gracefully stopping... (press Ctrl+C again to force)")
project.stop(service_names=service_names, timeout=timeout)
except signals.ShutdownException:
project.kill(service_names=service_names)
sys.exit(2)
def list_containers(containers):
return ", ".join(c.name for c in containers)
def exit_if(condition, message, exit_code):
if condition:
log.error(message)
raise SystemExit(exit_code)
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