def runCommand(self, container, cmd, stream=True):
cli = Client(base_url='unix://var/run/docker.sock')
ex = cli.exec_create(container=container, cmd=cmd)
if stream:
for result in cli.exec_start(exec_id=ex["Id"], stream=True):
print(result)
return cli.exec_inspect(exec_id=ex["Id"])['ExitCode']
else:
return cli.exec_start(exec_id=ex["Id"])
class DockerExec(object):
def __init__(self):
self.cl = Client(base_url="unix://var/run/docker.sock")
def execute(self, container, command, detach=False, interactive=False, tty=False):
try:
exec_id = self.cl.exec_create(container, command, True, True, tty)
print exec_id
ret = self.cl.exec_start(exec_id["Id"], detach, tty, False)
print ret
ins = self.cl.exec_inspect(exec_id["Id"])
print ins["ExitCode"]
except docker.errors.APIError as ex:
raise
class DockerExec(object):
def __init__(self):
self.cl = Client(base_url='unix://var/run/docker.sock')
def execute(self,
container,
command,
detach=False,
interactive=False,
tty=False):
try:
exec_id = self.cl.exec_create(container, command, True, True, tty)
print exec_id
ret = self.cl.exec_start(exec_id['Id'], detach, tty, False)
print ret
ins = self.cl.exec_inspect(exec_id['Id'])
print ins['ExitCode']
except docker.errors.APIError as ex:
raise
volumes.append(volume.split(':')[1])
host_config = cli.create_host_config(binds=config['volumes'])
# Create a container and start it
container = cli.create_container(image=config['image'] + ':' + config['tag'],
command='tail -f /dev/null',
detach=True,
stdin_open=True,
tty=True,
environment=config['environment'],
volumes=volumes,
name=config['name'],
host_config=host_config)
cli.start(container=container.get('Id'))
# Execute the commands
for cmd in config['cmd']:
print('[+] ' + cmd)
execute = cli.exec_create(container['Id'], cmd=cmd, stdout=True, stderr=True)
for char in cli.exec_start(execute['Id'], tty=True, stream=True):
sys.stdout.write(char.decode(sys.stdout.encoding))
status = cli.exec_inspect(execute['Id'])['ExitCode']
if status != 0:
break
# Stop the container and remove it
cli.stop(container=container.get('Id'))
cli.remove_container(container=container['Id'])
sys.exit(status)
class Two1ComposerContainers(Two1Composer):
""" Manage machine-payable microservices in containers.
"""
def __init__(self):
self._connected = ComposerState.DISCONNECTED
self.provider = TwentyOneProvider()
self.default_wallet = Two1Wallet(self.wallet_file, self.provider)
class ServiceManager:
""" Query and modify user services persisting at cls.USER_SERVICES_FILE.
"""
USER_SERVICES_FILE = os.path.join(Two1Composer.BASE_DIR, "user-services.json")
class Image(namedtuple('Image', 'docker_hub_account repository tag')):
def _asdict(self):
# Fixes a bug for Python 3.4 users
# https://bugs.python.org/issue24931
'A new OrderedDict mapping field names to their values'
return OrderedDict(zip(self._fields, self))
@property
def is_dockerhub_image(self):
""" Returns: True iff Image instance has all fields.
"""
return self.docker_hub_account and self.repository and self.tag
@property
def is_local_image(self):
""" Returns: True iff Image instance doesn't have docker_hub_account but has all other fields.
"""
return not self.docker_hub_account and self.repository and self.tag
def __str__(self):
""" Returns: Docker image name constructed from Image instance fields.
"""
if self.is_dockerhub_image:
return '%s/%s:%s' % (self.docker_hub_account, self.repository, self.tag)
elif self.is_local_image:
return '%s:%s' % (self.repository, self.tag)
else:
raise ValueError()
@classmethod
def from_string(cls, image_name):
""" Constructs an Image instance from a docker image name.
Args:
image_name (str): A docker image name.
Returns:
Image: An Image instance.
"""
slashes = re.findall('/', image_name)
colons = re.findall(':', image_name)
if len(slashes) == 1:
if len(colons) == 1 and image_name.find('/') < image_name.find(':'):
docker_hub_account, rest = image_name.split('/')
repository, tag = rest.split(':')
return cls(docker_hub_account=docker_hub_account, repository=repository, tag=tag)
elif len(colons) == 0:
docker_hub_account, repository = image_name.split('/')
return cls(docker_hub_account=docker_hub_account, repository=repository, tag='latest')
elif len(slashes) == 0:
if len(colons) == 1:
repository, tag = image_name.split(':')
return cls(docker_hub_account=None, repository=repository, tag=tag)
elif len(colons) == 0:
return cls(docker_hub_account=None, repository=image_name, tag='latest')
raise ValueError()
@classmethod
def get_image(cls, service_name):
""" Constructs an Image instance for a service.
Args:
service_name (str): The name of either a 21 service in the 21dotco/two1 repository or a user service
added to ServiceManager.USER_SERVICES_FILE by ServiceManager.add_service.
Returns:
Image: An Image instance corresponding to the given service.
"""
if service_name in cls.available_21_services():
return cls.Image(
docker_hub_account='21dotco',
repository='two1',
tag=service_name if service_name in Two1Composer.BASE_SERVICES else 'service-%s' % service_name
)
elif service_name in cls.available_user_services():
return cls.Image(**cls._get_user_service_dict()[service_name])
else:
raise ValueError()
@classmethod
def available_services(cls):
""" Returns: All available service names.
"""
return cls.available_21_services() | cls.available_user_services()
@classmethod
def available_21_services(cls):
""" Returns: All available 21 services by querying Docker Hub.
"""
service_image_data = requests.get(os.path.join(
Two1Composer.DOCKERHUB_API_URL, Two1Composer.DOCKERHUB_REPO, 'tags')).json().get('results')
return set([image_data['name'].split('service-')[1] for image_data in
service_image_data if re.match(r'^service-', image_data['name'])])
@classmethod
def available_user_services(cls):
""" Returns: All available user services.
"""
return set(cls._get_user_service_dict().keys())
@classmethod
def add_service(cls, service_name, image_name_string,
service_successfully_added_hook, service_already_exists_hook,
service_failed_to_add_hook):
""" Adds a new service definition to ServiceManager.USER_SERVICES_FILE.
Args:
service_name (str): Name of the service definition to add.
image_name_string (str): Docker image name for the service definition.
"""
service_dict = cls._get_user_service_dict()
if service_name in service_dict:
service_already_exists_hook(service_name)
else:
service_dict[service_name] = cls.Image.from_string(image_name_string)._asdict()
if cls._commit_user_service_dict(service_dict):
service_successfully_added_hook(service_name)
else:
service_failed_to_add_hook(service_name)
@classmethod
def remove_service(cls, service_name,
service_successfully_removed_hook,
service_does_not_exists_hook,
service_failed_to_remove_hook):
""" Removes a service definition from ServiceManager.USER_SERVICES_FILE.
Args:
service_name (str): Name of the service definition to remove.
"""
service_dict = cls._get_user_service_dict()
if service_name in service_dict:
del service_dict[service_name]
if cls._commit_user_service_dict(service_dict):
service_successfully_removed_hook(service_name)
else:
service_failed_to_remove_hook(service_name)
else:
service_does_not_exists_hook(service_name)
@classmethod
def _get_user_service_dict(cls):
""" Returns: ServiceManager.USER_SERVICES_FILE as a dict.
"""
try:
with open(cls.USER_SERVICES_FILE, 'r') as data_file:
service_dict = json.load(data_file)
except:
return {}
else:
return service_dict
@classmethod
def _commit_user_service_dict(cls, service_dict):
""" Writes a dict of user services to ServiceManager.USER_SERVICES_FILE in json format.
Args:
service_dict (dict): A dictionary of user services of the form
{service_name : _as_dict representation of corresponding Image instance..}.
Returns:
bool: True iff no exceptions were raised when writing service_dict to ServiceManager.USER_SERVICES_FILE
as json.
"""
try:
with open(cls.USER_SERVICES_FILE, 'w') as outfile:
json.dump(service_dict, outfile)
except:
return False
else:
return True
class ComposerYAMLContext(YamlDataContext):
""" Context manager for composer YAML service file.
"""
def __init__(self, username=None, password=None, server_port=None, mnemonic=None):
self.username = username
self.password = password
self.server_port = server_port
self.mnemonic = mnemonic
super().__init__(Two1Composer.COMPOSE_FILE)
def __enter__(self):
sup = super().__enter__()
for service in self.data['services']:
service_definition = self.data['services'][service]
if 'environment' in service_definition:
if 'TWO1_USERNAME' in service_definition['environment'] and self.username is not None:
service_definition['environment']['TWO1_USERNAME'] = self.username
if 'TWO1_PASSWORD' in service_definition['environment'] and self.password is not None:
service_definition['environment']['TWO1_PASSWORD'] = self.password
if 'TWO1_WALLET_MNEMONIC' in service_definition['environment'] and self.mnemonic is not None:
service_definition['environment']['TWO1_WALLET_MNEMONIC'] = self.mnemonic
if 'PAYMENT_SERVER_IP' in service_definition['environment'] and self.server_port is not None:
rest = service_definition['environment']['PAYMENT_SERVER_IP'].rsplit(':', maxsplit=1)[-1]
service_definition['environment']['PAYMENT_SERVER_IP'] = '%s:%s' % (rest, self.server_port)
return sup
def _filler(self):
""" Create the base service description file.
"""
return {
'version': '2',
'services': {
'base': {
'image': '%s:base' % Two1Composer.DOCKERHUB_REPO,
},
'router': {
'image': '%s:router' % Two1Composer.DOCKERHUB_REPO,
'container_name': 'sell_router',
'restart': 'always',
'volumes': [
Two1Composer.SITES_ENABLED_PATH + ":/etc/nginx/sites-enabled",
Two1Composer.SITES_AVAILABLE_PATH + ":/etc/nginx/sites-available",
],
'ports': ['%s:%s' % (self.server_port, self.server_port)],
'links': [
'payments:payments',
],
},
'payments': {
'image': '%s:payments' % Two1Composer.DOCKERHUB_REPO,
'depends_on': ['base'],
'container_name': 'sell_payments',
'restart': 'always',
'environment': {
"TWO1_USERNAME": str(self.username),
"TWO1_PASSWORD": str(self.password),
"TWO1_WALLET_MNEMONIC": str(self.mnemonic)
},
'volumes': [
Two1Composer.DB_DIR + ":/usr/src/db/"
],
'logging': {
'driver': 'json-file'
},
'cap_drop': [
'ALL'
],
'cap_add': [
'DAC_OVERRIDE',
'NET_RAW',
],
}
}
}
# public api
def connect(self, machine_env, host, machine_config_file):
""" Connect service composer to machine layer.
Args:
machine_env (dict): Environment dictionary for the docker client of the machine layer.
host (str): Hostname of the machine layer docker daemon.
machine_config_file (str): Path to the config file for the machine layer.
"""
self.machine_env = machine_env
self.machine_host = host
with open(machine_config_file, 'r') as f:
self.machine_config = json.load(f)
self.docker_client = Client(**docker_env(assert_hostname=False,
environment=self.machine_env))
self._connected = ComposerState.CONNECTED
def initialize_server(self, username, password, server_port, wallet=None):
""" Initialize micropayments server.
Define boilerplate services, networks, and volumes composer file
and nginx server config.
Generates a wallet mnemonic if non-existent.
Args:
username (str): Username to log in with.
password (str): Password to log in with.
server_port (int): The server port that the router is running on.
wallet: The wallet to use for the payments server and subsequent services.
"""
self._create_base_server(server_port) # create base router server config
self._create_payments_route() # create route to payments server
new_wallet = None # rv[1], not None if mnemonic is replaced in this function
# generate service description (yaml)
with self.ComposerYAMLContext(username, password, server_port) as composer_yaml:
try:
mnemonic = composer_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC']
if not mnemonic or mnemonic == str(None): # if mnemonic is Falsy or uninitialized
raise ValueError()
except (KeyError, ValueError): # catches if mnemonic is Falsy or doesn't exist in dict tree
new_machine_wallet = self.default_wallet.create(self.provider)[1]
composer_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC'] = new_machine_wallet
new_wallet = new_machine_wallet
return 0, new_wallet
def pull_image(self, image,
image_sucessfully_pulled_hook, image_failed_to_pull_hook, image_is_local_hook,
image_is_malformed_hook):
""" Pulls an Image instance iff it is a Docker Hub image.
Args:
image (Image): An Image instance.
"""
if image.is_dockerhub_image:
try:
self.docker_client.pull('%s/%s' % (image.docker_hub_account, image.repository),
tag=image.tag, stream=False)
except:
image_failed_to_pull_hook(image)
else:
image_sucessfully_pulled_hook(image)
elif image.is_local_image:
image_is_local_hook(image)
else:
image_is_malformed_hook(image)
def start_services(self, service_names,
failed_to_start_hook, started_hook, failed_to_restart_hook, restarted_hook, failed_to_up_hook,
up_hook):
""" Start selected services.
Args:
service_names (list): List of service names to start.
failed_to_start_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to start.
started_hook (Callable): A callable hook that takes in a service name and is run when said service starts.
failed_to_restart_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to restart.
restarted_hook (Callable): A callable hook that takes in a service name and is run when said service
restarts.
failed_to_up_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to go up.
up_hook (Callable): A callable hook that takes in a service name and is run when said service goes up.
"""
self._start_sell_service('base', failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._start_sell_service('router', failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._start_sell_service('payments', failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._restart_sell_service('router', failed_to_start_hook, started_hook, failed_to_restart_hook, restarted_hook,
failed_to_up_hook, up_hook)
# Attempt to start all market services
for service_name in service_names:
try:
image = self.ServiceManager.get_image(service_name)
container_name = self.service_name_2_container_name(service_name)
# create nginx routes for service_name
self._create_service_route(service_name)
# add service_name to docker compose file
with self.ComposerYAMLContext() as docker_compose_yaml:
username = docker_compose_yaml['services']['payments']['environment']['TWO1_USERNAME']
password = docker_compose_yaml['services']['payments']['environment']['TWO1_PASSWORD']
mnemonic = docker_compose_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC']
docker_compose_yaml['services'][service_name] = {
'image': str(image),
'container_name': container_name,
'depends_on': ['base'],
'restart': 'always',
'environment': {
"TWO1_USERNAME": str(username),
"TWO1_PASSWORD": str(password),
"TWO1_WALLET_MNEMONIC": str(mnemonic),
"SERVICE": str(service_name),
"PAYMENT_SERVER_IP":
"http://%s:%s" % (self.machine_host, self.machine_config["server_port"])
},
'volumes': [
Two1Composer.DB_DIR + ":/usr/src/db/"
],
'logging': {
'driver': 'json-file'
},
'cap_drop': [
'ALL'
],
'cap_add': [
'DAC_OVERRIDE',
'NET_RAW',
],
}
link_str = '%s:%s' % (service_name, service_name)
if link_str not in docker_compose_yaml['services']['router']['links']:
docker_compose_yaml['services']['router']['links'].append(link_str)
except:
# something went wrong while configuring service_name
failed_to_start_hook(service_name)
else:
# attempt to build service_name
self._start_sell_service(service_name, failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._restart_sell_service('router', failed_to_start_hook, started_hook, failed_to_restart_hook, restarted_hook,
failed_to_up_hook, up_hook)
def _start_sell_service(self, service_name, failed_to_start_hook, started_hook, failed_to_up_hook, up_hook,
timeout=Two1Composer.SERVICE_START_TIMEOUT):
try:
subprocess.check_output(["docker-compose", "-f", Two1Composer.COMPOSE_FILE, "up", "-d", service_name],
stderr=subprocess.DEVNULL, env=self.machine_env)
except subprocess.CalledProcessError:
failed_to_start_hook(service_name)
else:
started_hook(service_name)
if service_name == 'router':
time.sleep(5)
elif service_name != 'router' and service_name != 'base':
start = time.clock()
exec_id = self.docker_client.exec_create('sell_router', "curl %s:5000" % service_name)['Id']
self.docker_client.exec_start(exec_id)
running = True
while time.clock() - start < timeout and running is True:
running = self.docker_client.exec_inspect(exec_id)['Running']
if running is True:
failed_to_up_hook(service_name)
else:
up_hook(service_name)
def _restart_sell_service(self, service_name, failed_to_start_hook, started_hook, failed_to_restart_hook,
restarted_hook, failed_to_up_hook, up_hook):
try:
self.docker_client.stop("sell_%s" % service_name)
except:
is_restart = False
else:
is_restart = True
self._start_sell_service(service_name, failed_to_restart_hook if is_restart else failed_to_start_hook,
restarted_hook if is_restart else started_hook, failed_to_up_hook, up_hook)
def stop_services(self, service_names,
service_found_stopped_and_removed_hook,
service_failed_to_stop_hook,
service_failed_to_be_removed_hook,
service_not_found_hook):
""" Stop selected services and remove containers.
Args:
service_names (set): Set of services to stop.
service_found_stopped_and_removed_hook (Callable): A callable hook that takes in a service name and is run
when said service is found, stopped, and removed.
service_failed_to_stop_hook (Callable): A callable hook that takes in a service name and is run when said
service fails to be stopped.
service_failed_to_be_removed_hook (Callable): A callable hook that takes in a service name and is run when
said service fails to be removed.
service_not_found_hook (Callable): A callable hook that takes in a service name and is run when said service
isn't found.
"""
for service_name in service_names:
if service_name in self.get_running_services():
container_name = self.service_name_2_container_name(service_name)
try:
self.docker_client.stop(container_name)
except:
service_failed_to_stop_hook(service_name)
else:
try:
self.docker_client.remove_container(container_name)
except:
service_failed_to_be_removed_hook(service_name)
else:
service_found_stopped_and_removed_hook(service_name)
else:
service_not_found_hook(service_name)
def silently_force_stop_all_services(self):
running_container_names = self.docker_client.containers(filters={"status": "running"})
for container_name in running_container_names:
self.docker_client.remove_container(container_name, force=True)
@staticmethod
def container_names_2_service_names(container_definitions):
""" Return service names from container definitions.
See service_name_2_container_name for the inverse operation but on one service name.
Args:
container_definitions (list): List of container descriptions as returned by self.docker_client.containers.
Returns:
set: Set of service names generated by removing the 'sell_' prefix from the containers' names.
"""
return set([container_definition['Names'][0][6:] for container_definition in container_definitions])
@staticmethod
def service_name_2_container_name(service_name):
""" Generates a container name from a service name by prepending 'sell_'
"""
return 'sell_%s' % service_name
def status_services(self, services):
""" Gets running status of specified services.
Args:
services (list): List of services to get status for.
"""
existent_services = self.get_services(all=True)
running_services = self.get_services(filters={"status": "running"})
exited_services = self.get_services(filters={"status": "exited"})
return {
"running": running_services & services,
"exited": exited_services & services,
"nonexistent": services - existent_services
}
def get_services(self, *args, **kwargs):
""" Call docker_client.containers | convert resulting container names to service names | remove base services
"""
return self.container_names_2_service_names(
self.docker_client.containers(*args, **kwargs)
) - Two1Composer.BASE_SERVICES
def get_running_services(self):
""" Get list of currently running services that aren't 21 base services.
Returns:
set: Set of currently running services.
"""
return self.get_services(filters={"status": "running"})
def status_router(self, service_running_hook, service_unknown_state_hook):
""" Get status of Nginx router container.
Args:
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
"""
if len(self.docker_client.containers(all=True, filters={"name": "sell_router", "status": "running"})) == 1:
service_running_hook("router")
else:
service_unknown_state_hook("router")
def status_payments_server(self, service_running_hook, service_unknown_state_hook):
""" Get status of payment channels server.
Args:
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
"""
if len(self.docker_client.containers(all=True, filters={"name": "sell_payments", "status": "running"})) == 1:
service_running_hook("payments")
else:
service_unknown_state_hook("payments")
@staticmethod
def _create_base_server(server_port):
""" Create nginx base server config.
Args:
server_port (int): port for 21 sell server.
"""
try:
# create nginx router dirs
shutil.rmtree(Two1Composer.SITES_ENABLED_PATH, ignore_errors=True)
shutil.rmtree(Two1Composer.SITES_AVAILABLE_PATH, ignore_errors=True)
os.makedirs(Two1Composer.SITES_ENABLED_PATH, exist_ok=True)
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
# create base nginx server
with open(os.path.join(Two1Composer.SITES_ENABLED_PATH,
"two1baseserver"), 'w') as f:
f.write("server {\n"
" listen " + str(server_port) + ";\n"
" include /etc/nginx/sites-available/*;\n"
"}\n"
)
except Exception:
raise exceptions.Two1ComposerServiceDefinitionException()
@staticmethod
def _create_service_route(service):
""" Create route for container service.
"""
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
try:
with open(os.path.join(Two1Composer.SITES_AVAILABLE_PATH, service), 'w') as f:
f.write("location /" + service + " {\n"
" rewrite ^/" + service + "/?(.*) /$1 break;\n"
" proxy_pass http://" + service + ":" + str(5000) + ";\n"
" proxy_set_header Host $host;\n"
" proxy_set_header X-Real-IP $remote_addr;\n"
" proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerRouteException()
@staticmethod
def _create_payments_route():
""" Add route to payments server.
"""
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
try:
# write nginx route for payments server
with open(os.path.join(Two1Composer.SITES_AVAILABLE_PATH, "payments"), 'w') as f:
f.write("location /payment {\n"
" proxy_pass http://payments:" + str(5000) + ";\n"
" proxy_set_header Host $host;\n"
" proxy_set_header X-Real-IP $remote_addr;\n"
" proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerRouteException()
def publish_service(self, service_name, host_override, rest_client, published_hook,
already_published_hook, failed_to_publish_hook,
unknown_publish_error_hook):
strm, stat = self.docker_client.get_archive('sell_%s' % service_name,
'/usr/src/app/manifest.yaml')
with tarfile.open(fileobj=BytesIO(strm.read()), mode='r') as tf:
manifest = yaml.load(tf.extractfile(stat[u'name']).read().decode())
manifest['host'] = host_override
try:
resp = rest_client.publish({"manifest": manifest,
"marketplace": "21mkt"})
except ServerRequestError as e:
if e.status_code == 403 and e.data.get("error") == "TO600":
already_published_hook(service_name)
else:
failed_to_publish_hook(service_name)
except:
unknown_publish_error_hook(service_name)
else:
if resp.status_code == 201:
published_hook(service_name)
else:
failed_to_publish_hook(service_name)
def read_server_config(self):
try:
with open(Two1Composer.COMPOSE_FILE) as f:
return yaml.load(f)
except FileNotFoundError:
return {}
def get_services_mnemonic(self):
if os.path.isfile(Two1Composer.COMPOSE_FILE):
with self.ComposerYAMLContext() as composer_yaml:
try:
maybe_mnemonic = composer_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC']
except KeyError:
rv = None
else:
rv = maybe_mnemonic
else:
rv = None
return rv
class AXDockerClient(object):
def __init__(self, url=DEFAULT_DOCKER_SOCK):
self._conn = Client(base_url=url)
self._retry = AXRetry(retry_exception=(Exception, ),
success_check=lambda x: x,
default=False,
success_default=True)
@property
def version(self):
"""Cached version information"""
if hasattr(self, '_version'):
return self._version
self._version = self._conn.version()
return self._version
@property
def version_tuple(self):
"""Version tuple of docker daemon (e.g. (1, 11, 2))"""
return tuple([int(i) for i in self.version['Version'].split('.')])
# Public APIs
def start(self, registry, image, tag="latest", **kwargs):
"""
Start a new container described by image.
:param registry: The registry to use
:type registry: DockerRegistry
:param image: Full image name for this container.
:param kwargs: Other args passed to container start.
:return:
"""
assert "tag" not in kwargs
assert registry is not None and "Cannot start a container without providing a DockerRegistry"
if not self._pull_with_caching(registry, image, tag):
return None
full_image = registry.servername + "/" + image + ":" + tag
container = self._create(full_image, **kwargs)
if container is None:
return None
started = self._start(container)
if started:
return container
else:
self._remove(container["Id"])
return None
def stop(self, container, **kwargs):
"""
Stop sepcified container. Wrapper for docker API and handle exception.
:param container: (string) Id or name of container.
:param kwargs: Pass through kwargs for docker. Currently using only timeout.
"""
if "timeout" not in kwargs:
kwargs["timeout"] = 1
self._stop(container, **kwargs)
def remove(self, container, **kwargs):
"""
Remove a container.
:param container: (string) Id or name of container.
:param kwargs: Pass through for docker.
:return:
"""
self._remove(container, **kwargs)
def run(self, image, cmd, timeout=1200, **kwargs):
"""
Run a command inside a container and check result.
Container image is automatically pulled.
Container will be stopped and removed after comamnd.
:param image: Container image to run.
:param cmd: Command inside container. This overwrites docker "command" in kwargs
:param timeout: Timeout to wait for container.
:param kwargs: Dict for parameters. It includes AX parameters and pass through ones.
All AX parameters start with "ax_" and will be removed before passing to docker create.
Currently supported AX parameters:
- ax_net_host: Set network mode to "host"
- ax_privileged: Run container in privileged mode
:return: Tuple of: (True/False, return code)
"""
assert "tag" not in kwargs
logger.debug("Run %s inside %s on host %s, kwargs %s", cmd, image,
self._host, kwargs)
# Always overwrite command in kwargs.
kwargs["command"] = cmd
started = False
container = {}
rc = -1
try:
container = self._create(image, **kwargs)
assert container, "Failed to create from %s, %s" % (image, kwargs)
started = self._start(container)
assert started, "Failed to start %s, %s" % (image, container)
rc = self._conn.wait(container, timeout=timeout)
assert rc == 0, "Command %s failed rc=%s" % (cmd, rc)
except Exception:
logger.exception("Failed to run %s in %s on %s", cmd, image,
self._host)
return False, rc
finally:
if started:
self._stop(container["Id"], timeout=1)
if container:
self._remove(container["Id"])
logger.debug("Completed run %s inside %s on %s, rc=%s", cmd, image,
self._host, rc)
return True, rc
def cache_image(self, registry, name, tag="latest"):
"""
Cache the image to local registry
:param registry: The registry to use
:type registry: DockerRegistry
:param name: name of repo
:param tag: repo tag
"""
fetcher = DockerImageFetcher()
full_image = registry.servername + "/" + name + ":" + tag
return fetcher.single_executor(full_image, self._pull_with_caching,
registry, name, tag)
def get_container_uuid(self, name):
"""
Get UUID for a container.
"""
try:
info = self._conn.inspect_container(name)
except Exception:
info = {}
return info.get("Id", None)
def get_container_version(self, name):
"""
Get image namespace and version for a running container
Sample return:
[
"docker.example.com/lcj/axagent:latest",
"docker.local/lcj/axagent:latest"
]
"""
try:
info = self._conn.inspect_container(name)
except NotFound:
return []
image = info["Image"].split(":")[1]
info = self._conn.inspect_image(image)
return info["RepoTags"]
def exec_cmd(self, container_id, cmd, **kwargs):
"""Executes a command inside a running container and returns its output on completion
:param container_id: container id
:param cmd: command to execute
:return: output from the command
"""
logger.debug("Executing %s in container %s (kwargs: %s)", cmd,
container_id, kwargs)
try:
exec_id = self._conn.exec_create(container_id, cmd, **kwargs)
response = self._conn.exec_start(exec_id)
return response
# Docker API can actually return either error at different time.
except NotFound:
logger.debug("Container %s not exist on host %s", container_id,
self._host)
except APIError as e:
if "not running" in str(e):
logger.debug("Container %s not running on host %s",
container_id, self._host)
else:
raise
def exec_kill(self, pid, exec_id=None, container_id=None, signal=None):
"""
Kill a pid in a container. Optionally checks if exec session is still valid before killing.
:param pid: pid to kill in the container.
:param exec_id: perform kill only if exec id is still running.
:param container_id: perform kill only if exec id is still running.
:param signal: kill signal to send to process
"""
if not any([exec_id, container_id]):
raise ValueError("exec_id or container_id must be supplied")
pid = int(pid)
assert pid != -1, "Killing all processes prohibited"
if exec_id is not None:
if isinstance(exec_id, dict):
exec_id = exec_id['Id']
try:
exec_info = self._conn.exec_inspect(exec_id)
except APIError as e:
logger.warn(
"Failed to inspect exec session {} for killing. Skipping kill: {}"
.format(exec_id, str(e)))
return
if container_id:
if container_id not in exec_info['ContainerID']:
raise ValueError(
"Supplied container id {} mismatched with exec container id: {}"
.format(container_id, exec_info['ContainerID']))
else:
container_id = exec_info['ContainerID']
if not exec_info['Running']:
logger.debug(
"Exec session {} no longer running. Skipping kill".format(
exec_id))
return
# perform kill
kill_cmd_args = ['kill']
if signal:
kill_cmd_args.append('-{}'.format(signal))
kill_cmd_args.append(str(pid))
kill_cmd = ' '.join(kill_cmd_args)
response = self.exec_cmd(container_id,
'sh -c "{} 2>&1; echo $?"'.format(kill_cmd))
lines = response.splitlines()
rc = int(lines[-1])
if rc != 0:
reason = lines[0] if len(lines) > 1 else "reason unknown"
logger.warn("Failed to kill pid {} in container {}: {}".format(
pid, container_id, reason))
else:
logger.debug("Successfully killed pid {} in container {}".format(
pid, container_id))
def containers(self, **kwargs):
return self._conn.containers(**kwargs)
def stats(self, name, **kwargs):
return self._conn.stats(name, **kwargs)
def clean_graph(self, age=86400):
"""
Clean graph storage to remove old containers and any unreferenced docker image layers
"""
# Exit time is in free form string. Parse it. And real coarse time granularity.
pattern = ["month ago", "months ago", "year ago", "years ago"]
if age >= SECONDS_PER_MINUTE:
pattern += ["minutes ago", "minute ago"]
if age >= SECONDS_PER_HOUR:
pattern += ["hours ago", "hour ago"]
if age >= SECONDS_PER_DAY:
pattern += ["days ago", "day ago"]
if age >= SECONDS_PER_WEEK:
pattern += ["weeks ago", "week ago"]
for c in self._conn.containers(filters={"status": "exited"}):
if any([p in c["Status"] for p in pattern]):
try:
self._remove(c)
except Exception:
logger.exception("Failed to remove %s", c["Id"])
for i in self._conn.images():
if i["RepoTags"][0] == "<none>:<none>" and time.time(
) > i["Created"] + age:
try:
self._conn.remove_image(i["Id"])
except Exception:
# This is probably OK.
logger.debug("Failed to delete %s", i["Id"])
def search(self, searchstr=None):
if searchstr is None or searchstr == "":
raise AXPlatformException(
"Docker hub search string needs to a non-empty string")
response = self._conn.search(searchstr)
return [{
"ctime": "",
"repo": x['name'],
"tag": "latest"
} for x in response or []]
def login(self, registry, username, password):
"""
Returns a base64 encoded token of username and password
only if login is successful else it raises exceptions
"""
try:
self._conn.login(username,
password=password,
registry=registry,
reauth=True)
except APIError as e:
code = e.response.status_code
if code == 401:
# on login failure it raises a docker.errors.APIError:
# 401 Client Error: Unauthorized
raise AXUnauthorizedException(e.explanation)
elif code == 404:
raise AXNotFoundException(e.explanation)
elif code == 500:
if "x509: certificate signed by unknown authority" in e.response.text:
raise AXIllegalArgumentException(
"Certificate signed by unknown authority for {}".
format(registry))
else:
raise e
else:
raise e
token = base64.b64encode("{}:{}".format(username, password))
return token
@staticmethod
def generate_kubernetes_image_secret(registry, token):
"""
Create the image pull secret by concatenating the secrets required
for the passed token
Args:
registry: string
token: base64 encoded
Returns:
base64 encoded string used for imagepull secrets
"""
ret = {"auths": {registry: {"auth": token}}}
return base64.b64encode(json.dumps(ret))
# Internal implementations
def _pull_with_caching(self, registry, name, tag, **kwargs):
"""
Pull a new container with AX caching enabled.
:param registry: DockerRegistry instance.
:param name: Container short name.
:param tag: Tag.
:param kwargs: Other kwargs for pull.
Docker API requires tag to be in kwargs.
AX needs to process it and enforce tag to be separate.
:return: True or False
"""
assert "tag" not in kwargs, "%s" % kwargs
if registry.user is not None and registry.passwd is not None:
kwargs["auth_config"] = kwargs.get("auth_config", {
"username": registry.user,
"password": registry.passwd
})
return self._pull_with_retry(registry.servername, name, tag, **kwargs)
def _pull_with_retry(self, registry, name, tag, **kwargs):
return ax_retry(self._pull, self._retry, registry, name, tag, **kwargs)
def _pull(self, registry, name, tag, **kwargs):
"""
Do pull. Call docker API and check errors.
:param registry: Registry host name.
:param name: Container short name.
:param tag: Tag.
:param kwargs: Other pull args.
:return: True or False.
"""
# All must be set not empty.
assert all([registry, name, tag]), "%s, %s, %s" % (registry, name, tag)
repo = DockerImage(registry=registry, name=name).docker_repo()
kwargs["tag"] = tag
try:
ret = self._conn.pull(repo, stream=True, **kwargs)
except Exception:
logger.exception("Failed to pull %s, %s", repo, tag)
return False
logger.info("Pull image %s:%s starting", repo, tag)
# Search pull result to determine status. Must have digest and success message.
has_digest = False
has_image = False
try:
for l in ret:
try:
progress = json.loads(l)
if progress["status"].startswith("Digest:"):
has_digest = True
if "Image is up to date" in progress[
"status"] or "Downloaded newer image" in progress[
"status"]:
has_image = True
except (KeyError, ValueError):
logger.debug("Failed to parse pull progress line %s", l)
except Exception:
logger.exception("Failed to pull %s:%s", repo, tag)
return False
logger.info("Pull image %s:%s result %s %s", repo, tag, has_digest,
has_image)
return has_digest and has_image
def _push_with_retry(self, registry, name, tag):
return ax_retry(self._push, self._retry, registry, name, tag)
def _push(self, registry, name, tag):
"""
Do push. Call docker API and check errors.
:param registry: Registry host name.
:param name: Container short name.
:param tag: Tag.
:return: True or False.
"""
# All must be set not empty.
assert all([registry, name, tag]), "%s, %s, %s" % (registry, name, tag)
repo = DockerImage(registry=registry, name=name).docker_repo()
try:
ret = self._conn.push(repo, tag, stream=True)
except Exception:
logger.exception("Failed to push %s, %s", repo, tag)
return False
logger.info("Push image %s:%s starting", repo, tag)
# Search push result to determine status. Must have digest.
has_digest = False
try:
for l in ret:
try:
progress = json.loads(l)
has_digest = progress["status"].startswith("%s: digest:" %
tag)
except (KeyError, ValueError):
logger.debug("Failed to parse push progress line %s", l)
except Exception:
logger.exception("Failed to push %s:%s", repo, tag)
return False
logger.info("Push image %s:%s result %s", repo, tag, has_digest)
return has_digest
def _create(self, image, **kwargs):
"""
Create a new container.
:param image: (string) Container image with tag
:param kwargs: AX and docker parameters.
:return: container or None
"""
# Docker API has two levels of dict. Top level specify mostly "create" configs.
# One key at first level is "host_config". This defines second level "run" configs.
# It's yet another dict. It was specified in docker run API and moved here.
# We need to set both levels correctly.
self._validate_config(kwargs)
kwargs = self._parse_ax_create_config(kwargs)
kwargs = self._parse_ax_host_config(kwargs)
kwargs = self._remove_ax_config(kwargs)
logger.debug("Final kwargs for create %s: %s", image, kwargs)
try:
return self._conn.create_container(image, **kwargs)
except Exception:
logger.exception("Failed to create container from %s %s", image,
kwargs)
return None
def _start(self, container):
try:
self._conn.start(container)
return True
except Exception:
logger.exception("Failed to start container %s", container)
return False
def _stop(self, container, **kwargs):
try:
self._conn.stop(container, **kwargs)
except NotFound:
pass
except Exception:
logger.exception("Failed to stop %s", container)
def _remove(self, container, **kwargs):
try:
self._conn.remove_container(container, v=True, **kwargs)
except NotFound:
pass
except APIError as e:
if "Conflict" in str(e):
logger.error("Not removing running container %s", container)
elif "device or resource busy" in str(e):
# Work around https://github.com/google/cadvisor/issues/771
logger.error("Container removal temporary failure. Retrying.")
retry = AXRetry(retries=10,
delay=1,
retry_exception=(Exception, ),
success_exception=(NotFound, ))
ax_retry(self._conn.remove_container,
retry,
container,
v=True,
force=True)
else:
logger.exception("Failed to remove container %s", container)
except Exception:
logger.exception("Failed to remove container %s", container)
def _validate_config(self, config):
if "volumes" in config:
assert isinstance(
config["volumes"],
list), "Support only list of volumes %s" % config["volumes"]
if "host_config" in config and "Binds" in config["host_config"]:
assert isinstance(
config["host"]["Binds"], list
), "Support only list of volumes %s" % config["host"]["Binds"]
if "ports" in config:
assert isinstance(
config["ports"],
list), "Support only list of ports %s" % config["ports"]
if "host_config" in config and "port_bindings" in config["host_config"]:
assert isinstance(
config["host"]["PortBindings"],
dict), "Support only dict of port_bindings %s" % config[
"host"]["PortBindings"]
if "environment" in config:
assert isinstance(
config["environment"], list
), "Support only list of environments %s" % config["environment"]
def _parse_ax_create_config(self, config):
if config.get("ax_daemon", False):
config["detach"] = True
if "ax_volumes" in config:
axv = [v.split(":")[1] for v in config["ax_volumes"]]
if "volumes" in config:
assert isinstance(config["volumes"],
list), "must be list {}".format(
config["volumes"])
config["volumes"] += axv
else:
config["volumes"] = axv
if "ax_ports" in config:
config["ports"] = config["ax_ports"].keys()
return config
def _parse_ax_host_config(self, config):
ax_config = {}
if config.get("ax_net_host", False):
ax_config["network_mode"] = "host"
if config.get("ax_privileged", False):
ax_config["privileged"] = True
if config.get("ax_host_namespace", False):
ax_config["pid_mode"] = "host"
if config.get("ax_daemon", False):
ax_config["restart_policy"] = {
"MaximumRetryCount": 0,
"Name": "unless-stopped"
}
if "ax_volumes" in config:
if "binds" in ax_config:
assert isinstance(ax_config["binds"],
list), "must be list {}".format(
ax_config["binds"])
ax_config["binds"] += config["ax_volumes"]
else:
ax_config["binds"] = config["ax_volumes"]
if "ax_ports" in config:
ax_config["port_bindings"] = config["ax_ports"]
ax_host_config = self._conn.create_host_config(**ax_config)
if "host_config" in config:
config["host_config"].update(ax_host_config)
else:
config["host_config"] = ax_host_config
return config
def _remove_ax_config(self, config):
for key in config.keys():
if key.startswith("ax_"):
del config[key]
return config
class Two1ComposerContainers(Two1Composer):
""" Manage machine-payable microservices in containers.
"""
def __init__(self):
self._connected = ComposerState.DISCONNECTED
self.provider = TwentyOneProvider()
self.default_wallet = Two1Wallet(self.wallet_file, self.provider)
# public api
def connect(self, machine_env, host, machine_config_file):
""" Connect service composer to machine layer.
Args:
machine_env (dict): Environment dictionary for the docker client of the machine layer
host: Hostname of the machine layer docker daemon
machine_config_file (str): Path to the config file for the machine layer
"""
self.machine_env = machine_env
self.machine_host = host
with open(machine_config_file, 'r') as f:
self.machine_config = json.load(f)
self.docker_client = Client(**docker_env(assert_hostname=False,
environment=self.machine_env))
self._connected = ComposerState.CONNECTED
def initialize_server(self, username, password, server_port, wallet=None):
""" Initialize micropayments server.
Define boilerplate services, networks, and volumes composer file
and nginx server config.
Generates a wallet mnemonic if non-existent.
Args:
username (str): Username to log in with
password (str): Password to log in with
server_port (int): The server port that the router is running on
wallet: The wallet to use for the payments server and subsequent services
"""
self._create_base_server(server_port) # create base router server config
self._create_payments_route() # create route to payments server
new_wallet = None # rv[1], not None if mnemonic is replaced in this function
# generate service description (yaml)
with self.ComposerYAMLContext(username, password, server_port) as composer_yaml:
try:
mnemonic = composer_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC']
if not mnemonic or mnemonic == str(None): # if mnemonic is Falsy or uninitialized
raise ValueError()
except (KeyError, ValueError): # catches if mnemonic is Falsy or doesn't exist in dict tree
new_machine_wallet = self.default_wallet.create(self.provider)[1]
composer_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC'] = new_machine_wallet
new_wallet = new_machine_wallet
return 0, new_wallet
def list_services(self):
""" List available services to sell.
"""
service_image_data = requests.get(os.path.join(
Two1Composer.DOCKERHUB_API_URL, Two1Composer.DOCKERHUB_REPO, 'tags')).json().get('results')
valid_service_names = set([image_data['name'].split('service-')[1] for image_data in
service_image_data if re.match(r'^service-', image_data['name'])])
return list(valid_service_names)
def pull_latest_images(self, images):
""" Pull latest images from 21 DockerHub.
Args:
images (list): List of images to pull from the 21 DockerHub.
"""
for image_tag in images:
self.docker_client.pull(Two1Composer.DOCKERHUB_REPO, image_tag, stream=False)
return 0
def start_services(self, services, failed_to_start_hook, started_hook, failed_to_restart_hook, restarted_hook,
failed_to_up_hook, up_hook):
""" Start selected services.
Args:
services (list): List of services to start.
failed_to_start_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to start.
started_hook (Callable): A callable hook that takes in a service name and is run when said service starts.
failed_to_restart_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to restart.
restarted_hook (Callable): A callable hook that takes in a service name and is run when said service
restarts.
failed_to_up_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to go up.
up_hook (Callable): A callable hook that takes in a service name and is run when said service goes up.
Returns:
dict: Dictionary with service as key and value as dictionary.
Inner dictionary has format {"started": bool, "message": str, "order": int}.
Raises:
"""
self._start_sell_service('base', failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._start_sell_service('router', failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._start_sell_service('payments', failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._restart_sell_service('router', failed_to_start_hook, started_hook, failed_to_restart_hook, restarted_hook,
failed_to_up_hook, up_hook)
# Attempt to start all market services
for service_name in services:
# create nginx routes for service_name
self._create_service_route(service_name)
# add service_name to docker compose file
with self.ComposerYAMLContext() as docker_compose_yaml:
username = docker_compose_yaml['services']['payments']['environment']['TWO1_USERNAME']
password = docker_compose_yaml['services']['payments']['environment']['TWO1_PASSWORD']
mnemonic = docker_compose_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC']
docker_compose_yaml['services'][service_name] = {
'image': '%s:%s' % (Two1Composer.DOCKERHUB_REPO, 'service-' + service_name),
'container_name': 'sell_%s' % service_name,
'depends_on': ['base'],
'restart': 'always',
'environment': {
"TWO1_USERNAME": str(username),
"TWO1_PASSWORD": str(password),
"TWO1_WALLET_MNEMONIC": str(mnemonic),
"SERVICE": str(service_name),
"PAYMENT_SERVER_IP": "http://%s:%s" % (self.machine_host, self.machine_config["server_port"])
},
'volumes': [
Two1Composer.DB_DIR + ":/usr/src/db/"
],
'logging': {
'driver': 'json-file'
},
'cap_drop': [
'ALL'
],
'cap_add': [
'DAC_OVERRIDE',
'NET_RAW',
],
}
link_str = '%s:%s' % (service_name, service_name)
if link_str not in docker_compose_yaml['services']['router']['links']:
docker_compose_yaml['services']['router']['links'].append(link_str)
# attempt to build service_name
self._start_sell_service(service_name, failed_to_start_hook, started_hook, failed_to_up_hook, up_hook)
self._restart_sell_service('router', failed_to_start_hook, started_hook, failed_to_restart_hook, restarted_hook,
failed_to_up_hook, up_hook)
def _start_sell_service(self, service_name, failed_to_start_hook, started_hook, failed_to_up_hook, up_hook,
timeout=Two1Composer.SERVICE_START_TIMEOUT):
try:
subprocess.check_output(["docker-compose", "-f", Two1Composer.COMPOSE_FILE, "up", "-d", service_name],
stderr=subprocess.DEVNULL, env=self.machine_env)
except subprocess.CalledProcessError:
failed_to_start_hook(service_name)
else:
started_hook(service_name)
if service_name == 'router':
time.sleep(5)
elif service_name != 'router' and service_name != 'base':
start = time.clock()
exec_id = self.docker_client.exec_create('sell_router', "curl %s:5000" % service_name)['Id']
self.docker_client.exec_start(exec_id)
running = True
while time.clock() - start < timeout and running is True:
running = self.docker_client.exec_inspect(exec_id)['Running']
if running is True:
failed_to_up_hook(service_name)
else:
up_hook(service_name)
def _restart_sell_service(self, service_name, failed_to_start_hook, started_hook, failed_to_restart_hook,
restarted_hook, failed_to_up_hook, up_hook):
try:
self.docker_client.stop("sell_%s" % service_name)
except:
is_restart = False
else:
is_restart = True
self._start_sell_service(service_name, failed_to_restart_hook if is_restart else failed_to_start_hook,
restarted_hook if is_restart else started_hook, failed_to_up_hook, up_hook)
def stop_services(self, services,
service_found_stopped_and_removed_hook,
service_failed_to_stop_hook,
service_failed_to_be_removed_hook,
service_not_found_hook):
""" Stop selected services and remove containers.
Args:
services (list): List of services to stop.
service_found_stopped_and_removed_hook (Callable): A callable hook that takes in a service name and is run
when said service is found, stopped, and removed.
service_failed_to_stop_hook (Callable): A callable hook that takes in a service name and is run when said
service fails to be stopped.
service_failed_to_be_removed_hook (Callable): A callable hook that takes in a service name and is run when
said service fails to be removed.
service_not_found_hook (Callable): A callable hook that takes in a service name and is run when said service
isn't found.
"""
running_container_names = self.docker_client.containers(filters={"status": "running"})
for container_name in running_container_names:
running_service_name = list(self.names_from_containers([container_name]))[0]
if running_service_name in services:
try:
self.docker_client.stop(container_name)
except:
service_failed_to_stop_hook(running_service_name)
else: # container stopped
try:
self.docker_client.remove_container(container_name)
except:
service_failed_to_be_removed_hook(running_service_name)
else: # container
service_found_stopped_and_removed_hook(running_service_name)
def silently_force_stop_all_services(self):
running_container_names = self.docker_client.containers(filters={"status": "running"})
for container_name in running_container_names:
self.docker_client.remove_container(container_name, force=True)
@staticmethod
def names_from_containers(containers):
""" Return names from containers.
Args:
containers (list): List of containers as returned by self.docker_client.containers
"""
return frozenset([service['Names'][0][6:] for service in containers])
def status_services(self, services,
service_nonexistent_hook,
service_running_hook,
service_exited_hook,
service_unknown_state_hook):
""" Gets running status of specified services.
Args:
services (list): List of services to get status for.
service_nonexistent_hook (Callable): A callable hook that takes in a service name and is run when said
service is non-existent.
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_exited_hook (Callable): A callable hook that takes in a service name and is run when said service
has exited.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
Returns:
dict: Dictionary with service as key and value as dictionary.
Inner dictionary has format: {"status": str, "message": str}.
"Status" choices are: Not found, Running, Exited, Unable to contact.
"""
existent_services = self.names_from_containers(self.docker_client.containers(all=True))
running_services = self.names_from_containers(self.docker_client.containers(filters={"status": "running"}))
exited_services = self.names_from_containers(self.docker_client.containers(filters={"status": "exited"}))
for service_name in services:
if service_name in running_services:
service_running_hook(service_name)
elif service_name in exited_services:
service_exited_hook(service_name)
elif service_name in existent_services:
service_unknown_state_hook(service_name)
else:
service_nonexistent_hook(service_name)
def get_running_services(self):
""" Get list of running services.
Returns:
(list) started services
"""
return list(set(self.names_from_containers(self.docker_client.containers(
filters={"status": "running"}))).difference(set(Two1Composer.BASE_SERVICES)))
def status_router(self, service_running_hook, service_unknown_state_hook):
""" Get status of Nginx router container.
Args:
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
"""
if len(self.docker_client.containers(all=True, filters={"name": "sell_router", "status": "running"})) == 1:
service_running_hook("router")
else:
service_unknown_state_hook("router")
def status_payments_server(self, service_running_hook, service_unknown_state_hook):
""" Get status of payment channels server.
Args:
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
"""
if len(self.docker_client.containers(all=True, filters={"name": "sell_payments", "status": "running"})) == 1:
service_running_hook("payments")
else:
service_unknown_state_hook("payments")
@staticmethod
def _create_base_server(server_port):
""" Create nginx base server config.
Args:
server_port (int): port for 21 sell server.
"""
try:
# create nginx router dirs
shutil.rmtree(Two1Composer.SITES_ENABLED_PATH, ignore_errors=True)
shutil.rmtree(Two1Composer.SITES_AVAILABLE_PATH, ignore_errors=True)
os.makedirs(Two1Composer.SITES_ENABLED_PATH, exist_ok=True)
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
# create base nginx server
with open(os.path.join(Two1Composer.SITES_ENABLED_PATH,
"two1baseserver"), 'w') as f:
f.write("server {\n"
" listen " + str(server_port) + ";\n"
" include /etc/nginx/sites-available/*;\n"
"}\n"
)
except Exception:
raise exceptions.Two1ComposerServiceDefinitionException()
@staticmethod
def _create_service_route(service):
""" Create route for container service.
"""
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
try:
with open(os.path.join(Two1Composer.SITES_AVAILABLE_PATH, service), 'w') as f:
f.write("location /" + service + " {\n"
" rewrite ^/" + service + "(.*) /$1 break;\n"
" proxy_pass http://" + service + ":" + str(5000) + ";\n"
" proxy_set_header Host $host;\n"
" proxy_set_header X-Real-IP $remote_addr;\n"
" proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerRouteException()
@staticmethod
def _create_payments_route():
""" Add route to payments server.
"""
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
try:
# write nginx route for payments server
with open(os.path.join(Two1Composer.SITES_AVAILABLE_PATH, "payments"), 'w') as f:
f.write("location /payment {\n"
" proxy_pass http://payments:" + str(5000) + ";\n"
" proxy_set_header Host $host;\n"
" proxy_set_header X-Real-IP $remote_addr;\n"
" proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerRouteException()
def publish_service(self, service_name, rest_client, published_hook, already_published_hook, failed_to_publish_hook,
unknown_publish_error_hook):
strm, stat = self.docker_client.get_archive('sell_%s' % service_name, '/usr/src/app/manifest.yaml')
with tarfile.open(fileobj=BytesIO(strm.read()), mode='r') as tf:
manifest = yaml.load(tf.extractfile(stat[u'name']).read().decode())
try:
resp = rest_client.publish({"manifest": manifest,
"marketplace": "21mkt"})
except ServerRequestError as e:
if e.status_code == 403 and e.data.get("error") == "TO600":
already_published_hook(service_name)
else:
failed_to_publish_hook(service_name)
except:
unknown_publish_error_hook(service_name)
else:
if resp.status_code == 201:
published_hook(service_name)
else:
failed_to_publish_hook(service_name)
def read_server_config(self):
try:
with open(Two1Composer.COMPOSE_FILE) as f:
return yaml.load(f)
except FileNotFoundError:
return {}
def get_services_mnemonic(self):
if os.path.isfile(Two1Composer.COMPOSE_FILE):
with self.ComposerYAMLContext() as composer_yaml:
try:
maybe_mnemonic = composer_yaml['services']['payments']['environment']['TWO1_WALLET_MNEMONIC']
except KeyError:
rv = None
else:
rv = maybe_mnemonic
else:
rv = None
return rv
class DockerCluster(object):
IMAGE_NAME_BASE = os.path.join('teradatalabs', 'pa_test')
BARE_CLUSTER_TYPE = 'bare'
"""Start/stop/control/query arbitrary clusters of docker containers.
This class is aimed at product test writers to create docker containers
for testing purposes.
"""
def __init__(self, master_host, slave_hosts, local_mount_dir,
docker_mount_dir):
# see PyDoc for all_internal_hosts() for an explanation on the
# difference between an internal and regular host
self.internal_master = master_host
self.internal_slaves = slave_hosts
self.master = master_host + '-' + str(uuid.uuid4())
self.slaves = [
slave + '-' + str(uuid.uuid4()) for slave in slave_hosts
]
# the root path for all local mount points; to get a particular
# container mount point call get_local_mount_dir()
self.local_mount_dir = local_mount_dir
self.mount_dir = docker_mount_dir
kwargs = kwargs_from_env()
if 'tls' in kwargs:
kwargs['tls'].assert_hostname = False
kwargs['timeout'] = 240
self.client = Client(**kwargs)
self._DOCKER_START_TIMEOUT = 30
DockerCluster.__check_if_docker_exists()
def all_hosts(self):
return self.slaves + [self.master]
def get_master(self):
return self.master
def all_internal_hosts(self):
"""The difference between this method and all_hosts() is that
all_hosts() returns the unique, "outside facing" hostnames that
docker uses. On the other hand all_internal_hosts() returns the
more human readable host aliases for the containers used internally
between containers. For example the unique master host will
look something like 'master-07d1774e-72d7-45da-bf84-081cfaa5da9a',
whereas the internal master host will be 'master'.
Returns:
List of all internal hosts with the random suffix stripped out.
"""
return [host.split('-')[0] for host in self.all_hosts()]
def get_local_mount_dir(self, host):
return os.path.join(self.local_mount_dir, self.__get_unique_host(host))
def get_dist_dir(self, unique):
if unique:
return os.path.join(DIST_DIR, self.master)
else:
return DIST_DIR
def __get_unique_host(self, host):
matches = [
unique_host for unique_host in self.all_hosts()
if unique_host.startswith(host)
]
if matches:
return matches[0]
elif host in self.all_hosts():
return host
else:
raise DockerClusterException(
'Specified host: {0} does not exist.'.format(host))
@staticmethod
def __check_if_docker_exists():
try:
subprocess.call(['docker', '--version'])
except OSError:
sys.exit('Docker is not installed. Try installing it with '
'presto-admin/bin/install-docker.sh.')
def create_image(self,
path_to_dockerfile_dir,
image_tag,
base_image,
base_image_tag=None):
self.fetch_image_if_not_present(base_image, base_image_tag)
output = self._execute_and_wait(self.client.build,
path=path_to_dockerfile_dir,
tag=image_tag,
rm=True)
if not self._is_image_present_locally(image_tag, 'latest'):
raise OSError('Unable to build image %s: %s' % (image_tag, output))
def fetch_image_if_not_present(self, image, tag=None):
if not tag and not self.client.images(image):
self._execute_and_wait(self.client.pull, image)
elif tag and not self._is_image_present_locally(image, tag):
self._execute_and_wait(self.client.pull, image, tag)
def _is_image_present_locally(self, image_name, tag):
image_name_and_tag = image_name + ':' + tag
images = self.client.images(image_name)
if images:
for image in images:
if image_name_and_tag in image['RepoTags']:
return True
return False
def start_containers(self,
master_image,
slave_image=None,
cmd=None,
**kwargs):
self.tear_down()
self._create_host_mount_dirs()
self._create_and_start_containers(master_image, slave_image, cmd,
**kwargs)
self._ensure_docker_containers_started(master_image)
def tear_down(self):
for container_name in self.all_hosts():
self._tear_down_container(container_name)
self._remove_host_mount_dirs()
def _tear_down_container(self, container_name):
try:
shutil.rmtree(self.get_dist_dir(unique=True))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
try:
self.stop_host(container_name)
self.client.remove_container(container_name, v=True, force=True)
except APIError as e:
# container does not exist
if e.response.status_code != 404:
raise
def stop_host(self, container_name):
self.client.stop(container_name)
self.client.wait(container_name)
def start_host(self, container_name):
self.client.start(container_name)
def get_down_hostname(self, host_name):
return host_name
def _remove_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
shutil.rmtree(self.get_local_mount_dir(container_name))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
def _create_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
os.makedirs(self.get_local_mount_dir(container_name))
except OSError as e:
# file exists
if e.errno != errno.EEXIST:
raise
@staticmethod
def _execute_and_wait(func, *args, **kwargs):
ret = func(*args, **kwargs)
# go through all lines in returned stream to ensure func finishes
output = ''
for line in ret:
output += line
return output
def _create_and_start_containers(self,
master_image,
slave_image=None,
cmd=None,
**kwargs):
if slave_image:
for container_name in self.slaves:
container_mount_dir = \
self.get_local_mount_dir(container_name)
self._create_container(slave_image, container_name,
container_name.split('-')[0], cmd)
self.client.start(container_name,
binds={
container_mount_dir: {
'bind': self.mount_dir,
'ro': False
}
},
**kwargs)
master_mount_dir = self.get_local_mount_dir(self.master)
self._create_container(master_image,
self.master,
hostname=self.internal_master,
cmd=cmd)
self.client.start(
self.master,
binds={master_mount_dir: {
'bind': self.mount_dir,
'ro': False
}},
links=zip(self.slaves, self.slaves),
**kwargs)
self._add_hostnames_to_slaves()
def _create_container(self,
image,
container_name,
hostname=None,
cmd=None):
self._execute_and_wait(self.client.create_container,
image,
detach=True,
name=container_name,
hostname=hostname,
volumes=self.local_mount_dir,
command=cmd,
mem_limit='2g')
def _add_hostnames_to_slaves(self):
ips = self.get_ip_address_dict()
additions_to_etc_hosts = ''
for host in self.all_internal_hosts():
additions_to_etc_hosts += '%s\t%s\n' % (ips[host], host)
for host in self.slaves:
self.exec_cmd_on_host(
host, 'bin/bash -c \'echo "%s" >> /etc/hosts\'' %
additions_to_etc_hosts)
def _ensure_docker_containers_started(self, image):
centos_based_images = [BASE_TD_IMAGE_NAME]
timeout = 0
is_host_started = {}
for host in self.all_hosts():
is_host_started[host] = False
while timeout < self._DOCKER_START_TIMEOUT:
for host in self.all_hosts():
atomic_is_started = True
atomic_is_started &= \
self.client.inspect_container(host)['State']['Running']
if image in centos_based_images or \
image.startswith(self.IMAGE_NAME_BASE):
atomic_is_started &= \
self._are_centos_container_services_up(host)
is_host_started[host] = atomic_is_started
if not DockerCluster._are_all_hosts_started(is_host_started):
timeout += 1
sleep(1)
else:
break
if timeout is self._DOCKER_START_TIMEOUT:
raise DockerClusterException(
'Docker container timed out on start.' + str(is_host_started))
@staticmethod
def _are_all_hosts_started(host_started_map):
all_started = True
for host in host_started_map.keys():
all_started &= host_started_map[host]
return all_started
def _are_centos_container_services_up(self, host):
"""Some essential services in our CentOS containers take some time
to start after the container itself is up. This function checks
whether those services are up and returns a boolean accordingly.
Specifically, we check that the app-admin user has been created
and that the ssh daemon is up.
Args:
host: the host to check.
Returns:
True if the specified services have started, False otherwise.
"""
ps_output = self.exec_cmd_on_host(host, 'ps')
# also ensure that the app-admin user exists
try:
user_output = self.exec_cmd_on_host(host,
'grep app-admin /etc/passwd')
user_output += self.exec_cmd_on_host(host, 'stat /home/app-admin')
except OSError:
user_output = ''
if 'sshd_bootstrap' in ps_output or 'sshd\n' not in ps_output\
or not user_output:
return False
return True
def exec_cmd_on_host(self, host, cmd, raise_error=True, tty=False):
ex = self.client.exec_create(self.__get_unique_host(host),
cmd,
tty=tty)
output = self.client.exec_start(ex['Id'], tty=tty)
exit_code = self.client.exec_inspect(ex['Id'])['ExitCode']
if raise_error and exit_code:
raise OSError(exit_code, output)
return output
@staticmethod
def _get_master_image_name(cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
'%s_master' % (cluster_type))
@staticmethod
def _get_slave_image_name(cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
'%s_slave' % (cluster_type))
@staticmethod
def start_bare_cluster():
dc = DockerCluster
master_name = dc._get_master_image_name(dc.BARE_CLUSTER_TYPE)
slave_name = dc._get_slave_image_name(dc.BARE_CLUSTER_TYPE)
centos_cluster = DockerCluster('master',
['slave1', 'slave2', 'slave3'],
DEFAULT_LOCAL_MOUNT_POINT,
DEFAULT_DOCKER_MOUNT_POINT)
if not dc._check_for_images(master_name, slave_name):
centos_cluster.create_image(BASE_TD_DOCKERFILE_DIR, master_name,
BASE_IMAGE_NAME, BASE_IMAGE_TAG)
centos_cluster.create_image(BASE_TD_DOCKERFILE_DIR, slave_name,
BASE_IMAGE_NAME, BASE_IMAGE_TAG)
centos_cluster.start_containers(master_name, slave_name)
return centos_cluster
@staticmethod
def start_existing_images(cluster_type):
dc = DockerCluster
master_name = dc._get_master_image_name(cluster_type)
slave_name = dc._get_slave_image_name(cluster_type)
if not dc._check_for_images(master_name, slave_name):
return None
centos_cluster = DockerCluster('master',
['slave1', 'slave2', 'slave3'],
DEFAULT_LOCAL_MOUNT_POINT,
DEFAULT_DOCKER_MOUNT_POINT)
centos_cluster.start_containers(master_name, slave_name)
return centos_cluster
@staticmethod
def _check_for_images(master_image_name, slave_image_name):
client = Client(timeout=180)
images = client.images()
has_master_image = False
has_slave_image = False
for image in images:
if master_image_name in image['RepoTags'][0]:
has_master_image = True
if slave_image_name in image['RepoTags'][0]:
has_slave_image = True
return has_master_image and has_slave_image
def commit_images(self, cluster_type):
self.client.commit(self.master,
self._get_master_image_name(cluster_type))
self.client.commit(self.slaves[0],
self._get_slave_image_name(cluster_type))
def run_script_on_host(self, script_contents, host):
temp_script = '/tmp/tmp.sh'
self.write_content_to_host('#!/bin/bash\n%s' % script_contents,
temp_script, host)
self.exec_cmd_on_host(host, 'chmod +x %s' % temp_script)
return self.exec_cmd_on_host(host, temp_script, tty=True)
def write_content_to_host(self, content, path, host):
filename = os.path.basename(path)
dest_dir = os.path.dirname(path)
host_local_mount_point = self.get_local_mount_dir(host)
local_path = os.path.join(host_local_mount_point, filename)
with open(local_path, 'w') as config_file:
config_file.write(content)
self.exec_cmd_on_host(host, 'mkdir -p ' + dest_dir)
self.exec_cmd_on_host(
host,
'cp %s %s' % (os.path.join(self.mount_dir, filename), dest_dir))
def copy_to_host(self, source_path, dest_host):
shutil.copy(source_path, self.get_local_mount_dir(dest_host))
def get_ip_address_dict(self):
ip_addresses = {}
for host, internal_host in zip(self.all_hosts(),
self.all_internal_hosts()):
inspect = self.client.inspect_container(host)
ip_addresses[host] = inspect['NetworkSettings']['IPAddress']
ip_addresses[internal_host] = \
inspect['NetworkSettings']['IPAddress']
return ip_addresses
def _post_presto_install(self):
for worker in self.slaves:
self.run_script_on_host(
'sed -i /node.id/d /etc/presto/node.properties; '
'uuid=$(uuidgen); '
'echo node.id=$uuid >> /etc/presto/node.properties', worker)
def postinstall(self, installer):
from tests.product.standalone.presto_installer \
import StandalonePrestoInstaller
_post_install_hooks = {
StandalonePrestoInstaller: DockerCluster._post_presto_install
}
hook = _post_install_hooks.get(installer, None)
if hook:
hook(self)
class DockerControl:
def __init__(self, containerObject):
self.containerObject = containerObject
self.dockerCli = Client(base_url='unix://var/run/docker.sock')
def remove(self):
labelString = 'name=' + self.containerObject.name
labelDict = [labelString]
label = dict({'label': labelDict})
nameString = '/' + self.containerObject.name
containerList = self.dockerCli.containers()
for container in containerList:
if container['Names'][0] == nameString:
containerId = container['Id']
self.dockerCli.stop(container=containerId)
self.dockerCli.remove_container(container=containerId)
def runCmd(self, cmd):
nameString = '/' + self.containerObject.name
containerList = self.dockerCli.containers()
for container in containerList:
if container['Names'][0] == nameString:
containerId = container['Id']
execKey = self.dockerCli.exec_create(containerId, cmd)
execResult = self.dockerCli.exec_start(execKey['Id'])
dockerInfo = self.dockerCli.exec_inspect(execKey['Id'])
return execResult
def create(self):
image = self.containerObject.type
name = self.containerObject.name
domain = self.containerObject.domain
hostname = self.containerObject.name
directory = CONTAINER_VOL_DIR + '/' + name
if os.path.isdir(directory):
rmtree(directory)
os.makedirs(directory)
if image == 'dns':
copy(CONTAINER_CONF_DIR + '/dnsmasq.conf',
directory + '/dnsmasq.conf')
copytree(CONTAINER_CONF_DIR + '/dnsmasq.d',
directory + '/dnsmasq.d')
dnsmasqConfVolume = directory + '/dnsmasq.conf:/etc/dnsmasq.conf'
dnsmasqDVolume = directory + '/dnsmasq.d:/etc/dnsmasq.d'
dVolumes = [dnsmasqConfVolume, dnsmasqDVolume]
elif image == 'puppet':
puppetConfVolume = CONTAINER_VOL_DIR + '/puppet-master.conf:/etc/puppet/puppet.conf'
hieradataVolume = CONTAINER_VOL_DIR + '/hieradata:/etc/puppet/hieradata'
siteVolume = CONTAINER_VOL_DIR + '/site.pp:/etc/puppet/manifests/site.pp'
modulesVolume = CONTAINER_VOL_DIR + '/modules:/etc/puppet/modules'
dVolumes = [
puppetConfVolume, hieradataVolume, siteVolume, modulesVolume
]
else:
copy(CONTAINER_CONF_DIR + '/puppet.conf',
directory + '/puppet.conf')
copy(CONTAINER_CONF_DIR + '/auth.conf', directory + '/auth.conf')
puppetConfVolume = directory + '/puppet.conf:/etc/puppet/puppet.conf'
authConfVolume = directory + '/auth.conf:/etc/puppet/auth.conf'
dVolumes = [puppetConfVolume, authConfVolume]
dnsList = []
if isinstance(self.containerObject.dns, dict):
for dnsServer in self.containerObject.dns.keys():
dnsServerString = self.containerObject.dns[dnsServer][
'ipaddress'].split('/')[0]
dnsList.append(dnsServerString)
else:
dnsList.append(self.containerObject.dns)
dnsSearchList = [domain]
command = '/sbin/init'
host_config = create_host_config(privileged=True,
cap_add=['NET_ADMIN'],
dns=dnsList,
dns_search=dnsSearchList,
binds=dVolumes,
network_mode="none")
container = self.dockerCli.create_container(
image=image,
name=name,
command=command,
#domainname=domain, hostname=name, volumes = dVolumes,
domainname=domain,
hostname=name,
volumes=dVolumes,
detach=True,
host_config=host_config)
self.dockerCli.start(container=container.get('Id'))
containerInfo = self.dockerCli.inspect_container(
container=container.get('Id'))
containerPid = containerInfo['State']['Pid']
pidPath = '/proc/' + str(containerPid) + '/ns/net'
netNsPath = '/var/run/netns/' + name
os.symlink(pidPath, netNsPath)
return containerInfo
def start(self):
nameString = '/' + self.containerObject.name
containerList = self.dockerCli.containers(all=True)
for container in containerList:
if container['Names'][0] == nameString:
containerId = container['Id']
self.dockerCli.start(container=containerId)
containerInfo = self.dockerCli.inspect_container(container=containerId)
containerPid = containerInfo['State']['Pid']
pidPath = '/proc/' + str(containerPid) + '/ns/net'
netNsPath = '/var/run/netns/' + self.containerObject.name
os.symlink(pidPath, netNsPath)
return containerInfo
def stop(self):
nameString = '/' + self.containerObject.name
containerList = self.dockerCli.containers()
for container in containerList:
if container['Names'][0] == nameString:
containerId = container['Id']
self.dockerCli.stop(container=containerId)
containerInfo = self.dockerCli.inspect_container(container=containerId)
return containerInfo
from docker import Client
from pprint import pprint
import time
cli = Client(base_url='unix://var/run/docker.sock')
exec_id = cli.exec_create(
'midonet-agent.1',
'timeout 10 sh -c "while true; do echo new line; sleep 1; done"',
stdout=True,
stderr=True)
generator = cli.exec_start(exec_id, detach=False, stream=True)
print generator
print "Before blocking"
try:
while True:
print generator.next().rstrip()
except:
pass
finally:
pprint(cli.exec_inspect(exec_id))
class DockerCluster(BaseCluster):
IMAGE_NAME_BASE = os.path.join('teradatalabs', 'pa_test')
BARE_CLUSTER_TYPE = 'bare'
"""Start/stop/control/query arbitrary clusters of docker containers.
This class is aimed at product test writers to create docker containers
for testing purposes.
"""
def __init__(self, master_host, slave_hosts,
local_mount_dir, docker_mount_dir):
# see PyDoc for all_internal_hosts() for an explanation on the
# difference between an internal and regular host
self.internal_master = master_host
self.internal_slaves = slave_hosts
self.master = master_host + '-' + str(uuid.uuid4())
self.slaves = [slave + '-' + str(uuid.uuid4())
for slave in slave_hosts]
# the root path for all local mount points; to get a particular
# container mount point call get_local_mount_dir()
self.local_mount_dir = local_mount_dir
self.mount_dir = docker_mount_dir
kwargs = kwargs_from_env()
if 'tls' in kwargs:
kwargs['tls'].assert_hostname = False
kwargs['timeout'] = 300
self.client = Client(**kwargs)
DockerCluster.__check_if_docker_exists()
def all_hosts(self):
return self.slaves + [self.master]
def get_master(self):
return self.master
def all_internal_hosts(self):
return [host.split('-')[0] for host in self.all_hosts()]
def get_local_mount_dir(self, host):
return os.path.join(self.local_mount_dir,
self.__get_unique_host(host))
def get_dist_dir(self, unique):
if unique:
return os.path.join(DIST_DIR, self.master)
else:
return DIST_DIR
def __get_unique_host(self, host):
matches = [unique_host for unique_host in self.all_hosts()
if unique_host.startswith(host)]
if matches:
return matches[0]
elif host in self.all_hosts():
return host
else:
raise DockerClusterException(
'Specified host: {0} does not exist.'.format(host))
@staticmethod
def __check_if_docker_exists():
try:
subprocess.call(['docker', '--version'])
except OSError:
sys.exit('Docker is not installed. Try installing it with '
'presto-admin/bin/install-docker.sh.')
def fetch_image_if_not_present(self, image, tag=None):
if not tag and not self.client.images(image):
self._execute_and_wait(self.client.pull, image)
elif tag and not self._is_image_present_locally(image, tag):
self._execute_and_wait(self.client.pull, image, tag)
def _is_image_present_locally(self, image_name, tag):
image_name_and_tag = image_name + ':' + tag
images = self.client.images(image_name)
if images:
for image in images:
if image_name_and_tag in image['RepoTags']:
return True
return False
def start_containers(self, master_image, slave_image=None,
cmd=None, **kwargs):
self._create_host_mount_dirs()
self._create_and_start_containers(master_image, slave_image,
cmd, **kwargs)
self._ensure_docker_containers_started(master_image)
def tear_down(self):
for container_name in self.all_hosts():
self._tear_down_container(container_name)
self._remove_host_mount_dirs()
if self.client:
self.client.close()
self.client = None
def _tear_down_container(self, container_name):
try:
shutil.rmtree(self.get_dist_dir(unique=True))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
try:
self.stop_host(container_name)
self.client.remove_container(container_name, v=True, force=True)
except APIError as e:
# container does not exist
if e.response.status_code != 404:
raise
def stop_host(self, container_name):
self.client.stop(container_name)
self.client.wait(container_name)
def start_host(self, container_name):
self.client.start(container_name)
def get_down_hostname(self, host_name):
return host_name
def _remove_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
shutil.rmtree(
self.get_local_mount_dir(container_name))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
def _create_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
os.makedirs(
self.get_local_mount_dir(container_name))
except OSError as e:
# file exists
if e.errno != errno.EEXIST:
raise
@staticmethod
def _execute_and_wait(func, *args, **kwargs):
ret = func(*args, **kwargs)
# go through all lines in returned stream to ensure func finishes
output = ''
for line in ret:
output += line
return output
def _create_and_start_containers(self, master_image, slave_image=None,
cmd=None, **kwargs):
if slave_image:
for container_name in self.slaves:
container_mount_dir = \
self.get_local_mount_dir(container_name)
self._create_container(
slave_image, container_name,
container_name.split('-')[0], cmd
)
self.client.start(container_name,
binds={container_mount_dir:
{'bind': self.mount_dir,
'ro': False}},
**kwargs)
master_mount_dir = self.get_local_mount_dir(self.master)
self._create_container(
master_image, self.master, hostname=self.internal_master,
cmd=cmd
)
self.client.start(self.master,
binds={master_mount_dir:
{'bind': self.mount_dir,
'ro': False}},
links=zip(self.slaves, self.slaves), **kwargs)
self._add_hostnames_to_slaves()
def _create_container(self, image, container_name, hostname=None,
cmd=None):
self._execute_and_wait(self.client.create_container,
image,
detach=True,
name=container_name,
hostname=hostname,
volumes=self.local_mount_dir,
command=cmd,
host_config={'mem_limit': '2g'})
def _add_hostnames_to_slaves(self):
ips = self.get_ip_address_dict()
additions_to_etc_hosts = ''
for host in self.all_internal_hosts():
additions_to_etc_hosts += '%s\t%s\n' % (ips[host], host)
for host in self.slaves:
self.exec_cmd_on_host(
host,
'bin/bash -c \'echo "%s" >> /etc/hosts\''
% additions_to_etc_hosts
)
@retry(stop_max_delay=_DOCKER_START_TIMEOUT, wait_fixed=_DOCKER_START_WAIT)
def _ensure_docker_containers_started(self, image):
host_started = {}
for host in self.all_hosts():
host_started[host] = False
for host in host_started.keys():
if host_started[host]:
continue
is_started = True
is_started &= \
self.client.inspect_container(host)['State']['Running']
if is_started and image not in NO_WAIT_SSH_IMAGES:
is_started &= self._are_centos_container_services_up(host)
host_started[host] = is_started
not_started = [host for (host, started) in host_started.items() if not started]
if len(not_started):
raise NotStartedException(not_started)
@staticmethod
def _are_all_hosts_started(host_started_map):
all_started = True
for host in host_started_map.keys():
all_started &= host_started_map[host]
return all_started
def _are_centos_container_services_up(self, host):
"""Some essential services in our CentOS containers take some time
to start after the container itself is up. This function checks
whether those services are up and returns a boolean accordingly.
Specifically, we check that the app-admin user has been created
and that the ssh daemon is up, as well as that the SSH keys are
in the right place.
Args:
host: the host to check.
Returns:
True if the specified services have started, False otherwise.
"""
ps_output = self.exec_cmd_on_host(host, 'ps')
# also ensure that the app-admin user exists
try:
user_output = self.exec_cmd_on_host(
host, 'grep app-admin /etc/passwd'
)
user_output += self.exec_cmd_on_host(host, 'stat /home/app-admin')
except OSError:
user_output = ''
if 'sshd_bootstrap' in ps_output or 'sshd\n' not in ps_output\
or not user_output:
return False
# check for .ssh being in the right place
try:
ssh_output = self.exec_cmd_on_host(host, 'ls /home/app-admin/.ssh')
if 'id_rsa' not in ssh_output:
return False
except OSError:
return False
return True
def exec_cmd_on_host(self, host, cmd, user=None, raise_error=True,
tty=False):
ex = self.client.exec_create(self.__get_unique_host(host), cmd,
tty=tty, user=user)
output = self.client.exec_start(ex['Id'], tty=tty)
exit_code = self.client.exec_inspect(ex['Id'])['ExitCode']
if raise_error and exit_code:
raise OSError(exit_code, output)
return output
@staticmethod
def _get_tag_basename(bare_image_provider, cluster_type, ms):
return '_'.join(
[bare_image_provider.get_tag_decoration(), cluster_type, ms])
@staticmethod
def _get_master_image_name(bare_image_provider, cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
DockerCluster._get_tag_basename(
bare_image_provider, cluster_type, 'master'))
@staticmethod
def _get_slave_image_name(bare_image_provider, cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
DockerCluster._get_tag_basename(
bare_image_provider, cluster_type, 'slave'))
@staticmethod
def _get_image_names(bare_image_provider, cluster_type):
dc = DockerCluster
return (dc._get_master_image_name(bare_image_provider, cluster_type),
dc._get_slave_image_name(bare_image_provider, cluster_type))
@staticmethod
def start_cluster(bare_image_provider, cluster_type, master_host='master',
slave_hosts=None, **kwargs):
if slave_hosts is None:
slave_hosts = ['slave1', 'slave2', 'slave3']
created_bare = False
dc = DockerCluster
centos_cluster = DockerCluster(master_host, slave_hosts,
DEFAULT_LOCAL_MOUNT_POINT,
DEFAULT_DOCKER_MOUNT_POINT)
master_name, slave_name = dc._get_image_names(
bare_image_provider, cluster_type)
if not dc._check_for_images(master_name, slave_name):
master_name, slave_name = dc._get_image_names(
bare_image_provider, dc.BARE_CLUSTER_TYPE)
if not dc._check_for_images(master_name, slave_name):
bare_image_provider.create_bare_images(
centos_cluster, master_name, slave_name)
created_bare = True
centos_cluster.start_containers(master_name, slave_name, **kwargs)
return centos_cluster, created_bare
@staticmethod
def _check_for_images(master_image_name, slave_image_name, tag='latest'):
master_repotag = '%s:%s' % (master_image_name, tag)
slave_repotag = '%s:%s' % (slave_image_name, tag)
with Client(timeout=180) as client:
images = client.images()
has_master_image = False
has_slave_image = False
for image in images:
if master_repotag in image['RepoTags']:
has_master_image = True
if slave_repotag in image['RepoTags']:
has_slave_image = True
return has_master_image and has_slave_image
def commit_images(self, bare_image_provider, cluster_type):
self.client.commit(self.master,
self._get_master_image_name(bare_image_provider,
cluster_type))
if self.slaves:
self.client.commit(self.slaves[0],
self._get_slave_image_name(bare_image_provider,
cluster_type))
def run_script_on_host(self, script_contents, host):
temp_script = '/tmp/tmp.sh'
self.write_content_to_host('#!/bin/bash\n%s' % script_contents,
temp_script, host)
self.exec_cmd_on_host(host, 'chmod +x %s' % temp_script)
return self.exec_cmd_on_host(host, temp_script, tty=True)
def write_content_to_host(self, content, path, host):
filename = os.path.basename(path)
dest_dir = os.path.dirname(path)
host_local_mount_point = self.get_local_mount_dir(host)
local_path = os.path.join(host_local_mount_point, filename)
with open(local_path, 'w') as config_file:
config_file.write(content)
self.exec_cmd_on_host(host, 'mkdir -p ' + dest_dir)
self.exec_cmd_on_host(
host, 'cp %s %s' % (os.path.join(self.mount_dir, filename),
dest_dir))
def copy_to_host(self, source_path, dest_host, **kwargs):
shutil.copy(source_path, self.get_local_mount_dir(dest_host))
def get_ip_address_dict(self):
ip_addresses = {}
for host, internal_host in zip(self.all_hosts(),
self.all_internal_hosts()):
inspect = self.client.inspect_container(host)
ip_addresses[host] = inspect['NetworkSettings']['IPAddress']
ip_addresses[internal_host] = \
inspect['NetworkSettings']['IPAddress']
return ip_addresses
def _post_presto_install(self):
for worker in self.slaves:
self.run_script_on_host(
'sed -i /node.id/d /etc/presto/node.properties; '
'uuid=$(uuidgen); '
'echo node.id=$uuid >> /etc/presto/node.properties',
worker
)
def postinstall(self, installer):
from tests.product.standalone.presto_installer \
import StandalonePrestoInstaller
_post_install_hooks = {
StandalonePrestoInstaller: DockerCluster._post_presto_install
}
hook = _post_install_hooks.get(installer, None)
if hook:
hook(self)
class DockerCluster(BaseCluster):
IMAGE_NAME_BASE = os.path.join('teradatalabs', 'pa_test')
BARE_CLUSTER_TYPE = 'bare'
"""Start/stop/control/query arbitrary clusters of docker containers.
This class is aimed at product test writers to create docker containers
for testing purposes.
"""
def __init__(self, master_host, slave_hosts,
local_mount_dir, docker_mount_dir):
# see PyDoc for all_internal_hosts() for an explanation on the
# difference between an internal and regular host
self.internal_master = master_host
self.internal_slaves = slave_hosts
self._master = master_host + '-' + str(uuid.uuid4())
self.slaves = [slave + '-' + str(uuid.uuid4())
for slave in slave_hosts]
# the root path for all local mount points; to get a particular
# container mount point call get_local_mount_dir()
self.local_mount_dir = local_mount_dir
self._mount_dir = docker_mount_dir
kwargs = kwargs_from_env()
if 'tls' in kwargs:
kwargs['tls'].assert_hostname = False
kwargs['timeout'] = 300
self.client = Client(**kwargs)
self._user = '******'
DockerCluster.__check_if_docker_exists()
def all_hosts(self):
return self.slaves + [self.master]
def all_internal_hosts(self):
return [host.split('-')[0] for host in self.all_hosts()]
def get_local_mount_dir(self, host):
return os.path.join(self.local_mount_dir,
self.__get_unique_host(host))
def get_dist_dir(self, unique):
if unique:
return os.path.join(DIST_DIR, self.master)
else:
return DIST_DIR
def __get_unique_host(self, host):
matches = [unique_host for unique_host in self.all_hosts()
if unique_host.startswith(host)]
if matches:
return matches[0]
elif host in self.all_hosts():
return host
else:
raise DockerClusterException(
'Specified host: {0} does not exist.'.format(host))
@staticmethod
def __check_if_docker_exists():
try:
subprocess.call(['docker', '--version'])
except OSError:
sys.exit('Docker is not installed. Try installing it with '
'presto-admin/bin/install-docker.sh.')
def _is_image_present_locally(self, image_name, tag):
image_name_and_tag = image_name + ':' + tag
images = self.client.images(image_name)
if images:
for image in images:
if image_name_and_tag in image['RepoTags']:
return True
return False
def start_containers(self, master_image, slave_image=None,
cmd=None, **kwargs):
self._create_host_mount_dirs()
self._create_and_start_containers(master_image, slave_image,
cmd, **kwargs)
self._ensure_docker_containers_started(master_image)
def tear_down(self):
for container_name in self.all_hosts():
self._tear_down_container(container_name)
self._remove_host_mount_dirs()
if self.client:
self.client.close()
self.client = None
def _tear_down_container(self, container_name):
try:
shutil.rmtree(self.get_dist_dir(unique=True))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
try:
self.stop_host(container_name)
self.client.remove_container(container_name, v=True, force=True)
except APIError as e:
# container does not exist
if e.response.status_code != 404:
raise
def stop_host(self, container_name):
self.client.stop(container_name)
self.client.wait(container_name)
def start_host(self, container_name):
self.client.start(container_name)
def get_down_hostname(self, host_name):
return host_name
def _remove_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
shutil.rmtree(
self.get_local_mount_dir(container_name))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
def _create_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
os.makedirs(
self.get_local_mount_dir(container_name))
except OSError as e:
# file exists
if e.errno != errno.EEXIST:
raise
@staticmethod
def _execute_and_wait(func, *args, **kwargs):
ret = func(*args, **kwargs)
# go through all lines in returned stream to ensure func finishes
output = ''
for line in ret:
output += line
return output
def _create_and_start_containers(self, master_image, slave_image=None,
cmd=None, **kwargs):
if slave_image:
for container_name in self.slaves:
container_mount_dir = \
self.get_local_mount_dir(container_name)
self._create_container(
slave_image, container_name,
container_name.split('-')[0], cmd
)
self.client.start(container_name,
binds={container_mount_dir:
{'bind': self.mount_dir,
'ro': False}},
**kwargs)
master_mount_dir = self.get_local_mount_dir(self.master)
self._create_container(
master_image, self.master, hostname=self.internal_master,
cmd=cmd
)
self.client.start(self.master,
binds={master_mount_dir:
{'bind': self.mount_dir,
'ro': False}},
links=zip(self.slaves, self.slaves), **kwargs)
self._add_hostnames_to_slaves()
def _create_container(self, image, container_name, hostname=None,
cmd=None):
self._execute_and_wait(self.client.create_container,
image,
detach=True,
name=container_name,
hostname=hostname,
volumes=self.local_mount_dir,
command=cmd,
host_config={'mem_limit': '2g'})
def _add_hostnames_to_slaves(self):
ips = self.get_ip_address_dict()
additions_to_etc_hosts = ''
for host in self.all_internal_hosts():
additions_to_etc_hosts += '%s\t%s\n' % (ips[host], host)
for host in self.slaves:
self.exec_cmd_on_host(
host,
'bin/bash -c \'echo "%s" >> /etc/hosts\''
% additions_to_etc_hosts
)
@retry(stop_max_delay=_DOCKER_START_TIMEOUT, wait_fixed=_DOCKER_START_WAIT)
def _ensure_docker_containers_started(self, image):
# Strip off the tag, if there is one. We don't want to have to update
# the NO_WAIT_SSH_IMAGES list every time we update the docker images.
image_no_tag = image.split(':')[0]
host_started = {}
for host in self.all_hosts():
host_started[host] = False
for host in host_started.keys():
if host_started[host]:
continue
is_started = True
is_started &= \
self.client.inspect_container(host)['State']['Running']
if is_started and image_no_tag not in NO_WAIT_SSH_IMAGES:
is_started &= self._are_centos_container_services_up(host)
host_started[host] = is_started
not_started = [host for (host, started) in host_started.items() if not started]
if len(not_started):
raise NotStartedException(not_started)
@staticmethod
def _are_all_hosts_started(host_started_map):
all_started = True
for host in host_started_map.keys():
all_started &= host_started_map[host]
return all_started
def _are_centos_container_services_up(self, host):
"""Some essential services in our CentOS containers take some time
to start after the container itself is up. This function checks
whether those services are up and returns a boolean accordingly.
Specifically, we check that the app-admin user has been created
and that the ssh daemon is up, as well as that the SSH keys are
in the right place.
Args:
host: the host to check.
Returns:
True if the specified services have started, False otherwise.
"""
ps_output = self.exec_cmd_on_host(host, 'ps')
# also ensure that the app-admin user exists
try:
user_output = self.exec_cmd_on_host(
host, 'grep app-admin /etc/passwd'
)
user_output += self.exec_cmd_on_host(host, 'stat /home/app-admin')
except OSError:
user_output = ''
if 'sshd_bootstrap' in ps_output or 'sshd\n' not in ps_output\
or not user_output:
return False
# check for .ssh being in the right place
try:
ssh_output = self.exec_cmd_on_host(host, 'ls /home/app-admin/.ssh')
if 'id_rsa' not in ssh_output:
return False
except OSError:
return False
return True
def exec_cmd_on_host(self, host, cmd, user=None, raise_error=True,
tty=False, invoke_sudo=False):
ex = self.client.exec_create(self.__get_unique_host(host), ['sh', '-c', cmd],
tty=tty, user=user)
output = self.client.exec_start(ex['Id'], tty=tty)
exit_code = self.client.exec_inspect(ex['Id'])['ExitCode']
if raise_error and exit_code:
raise OSError(exit_code, output)
return output
@staticmethod
def _get_tag_basename(bare_image_provider, cluster_type, ms):
return '_'.join(
[bare_image_provider.get_tag_decoration(), cluster_type, ms])
@staticmethod
def _get_master_image_name(bare_image_provider, cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
DockerCluster._get_tag_basename(
bare_image_provider, cluster_type, 'master'))
@staticmethod
def _get_slave_image_name(bare_image_provider, cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
DockerCluster._get_tag_basename(
bare_image_provider, cluster_type, 'slave'))
@staticmethod
def _get_image_names(bare_image_provider, cluster_type):
dc = DockerCluster
return (dc._get_master_image_name(bare_image_provider, cluster_type),
dc._get_slave_image_name(bare_image_provider, cluster_type))
@staticmethod
def start_cluster(bare_image_provider, cluster_type, master_host='master',
slave_hosts=None, **kwargs):
if slave_hosts is None:
slave_hosts = ['slave1', 'slave2', 'slave3']
created_bare = False
dc = DockerCluster
centos_cluster = DockerCluster(master_host, slave_hosts,
DEFAULT_LOCAL_MOUNT_POINT,
DEFAULT_DOCKER_MOUNT_POINT)
master_name, slave_name = dc._get_image_names(
bare_image_provider, cluster_type)
if not dc._check_for_images(master_name, slave_name):
master_name, slave_name = dc._get_image_names(
bare_image_provider, dc.BARE_CLUSTER_TYPE)
if not dc._check_for_images(master_name, slave_name):
bare_image_provider.create_bare_images(
centos_cluster, master_name, slave_name)
created_bare = True
centos_cluster.start_containers(master_name, slave_name, **kwargs)
return centos_cluster, created_bare
@staticmethod
def _check_for_images(master_image_name, slave_image_name, tag='latest'):
master_repotag = '%s:%s' % (master_image_name, tag)
slave_repotag = '%s:%s' % (slave_image_name, tag)
with Client(timeout=180) as client:
images = client.images()
has_master_image = False
has_slave_image = False
for image in images:
if image['RepoTags'] is not None and master_repotag in image['RepoTags']:
has_master_image = True
if image['RepoTags'] is not None and slave_repotag in image['RepoTags']:
has_slave_image = True
return has_master_image and has_slave_image
def commit_images(self, bare_image_provider, cluster_type):
self.client.commit(self.master,
self._get_master_image_name(bare_image_provider,
cluster_type))
if self.slaves:
self.client.commit(self.slaves[0],
self._get_slave_image_name(bare_image_provider,
cluster_type))
def run_script_on_host(self, script_contents, host, tty=True):
temp_script = '/tmp/tmp.sh'
self.write_content_to_host('#!/bin/bash\n%s' % script_contents,
temp_script, host)
self.exec_cmd_on_host(host, 'chmod +x %s' % temp_script)
return self.exec_cmd_on_host(host, temp_script, tty=tty)
def write_content_to_host(self, content, path, host):
filename = os.path.basename(path)
dest_dir = os.path.dirname(path)
host_local_mount_point = self.get_local_mount_dir(host)
local_path = os.path.join(host_local_mount_point, filename)
with open(local_path, 'w') as config_file:
config_file.write(content)
self.exec_cmd_on_host(host, 'mkdir -p ' + dest_dir)
self.exec_cmd_on_host(
host, 'cp %s %s' % (os.path.join(self.mount_dir, filename),
dest_dir))
def copy_to_host(self, source_path, dest_host, **kwargs):
shutil.copy(source_path, self.get_local_mount_dir(dest_host))
def get_ip_address_dict(self):
ip_addresses = {}
for host, internal_host in zip(self.all_hosts(),
self.all_internal_hosts()):
inspect = self.client.inspect_container(host)
ip_addresses[host] = inspect['NetworkSettings']['IPAddress']
ip_addresses[internal_host] = \
inspect['NetworkSettings']['IPAddress']
return ip_addresses
def _post_presto_install(self):
for worker in self.slaves:
self.run_script_on_host(
'sed -i /node.id/d /etc/presto/node.properties; '
'uuid=$(uuidgen); '
'echo node.id=$uuid >> /etc/presto/node.properties',
worker
)
def postinstall(self, installer):
from tests.product.standalone.presto_installer \
import StandalonePrestoInstaller
_post_install_hooks = {
StandalonePrestoInstaller: DockerCluster._post_presto_install
}
hook = _post_install_hooks.get(installer, None)
if hook:
hook(self)
@property
def rpm_cache_dir(self):
return self._mount_dir
@property
def mount_dir(self):
return self._mount_dir
@property
def user(self):
return self._user
@property
def master(self):
return self._master
tty=True,
environment=config['environment'],
volumes=volumes,
name=config['name'],
host_config=host_config)
# Forward warning messages to stderr if any
if container.get('Warnings') is not None:
warn(container.get('Warnings'), RuntimeWarning)
# Start the container
cli.start(container=container.get('Id'))
# Execute the commands
for cmd in config['cmd']:
print('[+] ' + cmd)
execute = cli.exec_create(container['Id'],
cmd=cmd,
stdout=True,
stderr=True,
stdin=False)
for char in cli.exec_start(execute['Id'], stream=True):
sys.stdout.write(char.decode(sys.stdout.encoding))
status = cli.exec_inspect(execute['Id'])['ExitCode']
if status != 0:
break
# Stop the container and remove it
cli.stop(container=container.get('Id'))
cli.remove_container(container=container['Id'])
sys.exit(status)
class Two1ComposerContainers(Two1Composer):
""" Manage machine-payable microservices in containers.
"""
def __init__(self):
self._connected = ComposerState.DISCONNECTED
self.provider = TwentyOneProvider()
self.default_wallet = Two1Wallet(self.wallet_file, self.provider)
class ServiceManager:
""" Query and modify user services persisting at cls.USER_SERVICES_FILE.
"""
USER_SERVICES_FILE = os.path.join(Two1Composer.BASE_DIR,
"user-services.json")
class Image(namedtuple('Image', 'docker_hub_account repository tag')):
def _asdict(self):
# Fixes a bug for Python 3.4 users
# https://bugs.python.org/issue24931
'A new OrderedDict mapping field names to their values'
return OrderedDict(zip(self._fields, self))
@property
def is_dockerhub_image(self):
""" Returns: True iff Image instance has all fields.
"""
return self.docker_hub_account and self.repository and self.tag
@property
def is_local_image(self):
""" Returns: True iff Image instance doesn't have docker_hub_account but has all other fields.
"""
return not self.docker_hub_account and self.repository and self.tag
def __str__(self):
""" Returns: Docker image name constructed from Image instance fields.
"""
if self.is_dockerhub_image:
return '%s/%s:%s' % (self.docker_hub_account,
self.repository, self.tag)
elif self.is_local_image:
return '%s:%s' % (self.repository, self.tag)
else:
raise ValueError()
@classmethod
def from_string(cls, image_name):
""" Constructs an Image instance from a docker image name.
Args:
image_name (str): A docker image name.
Returns:
Image: An Image instance.
"""
slashes = re.findall('/', image_name)
colons = re.findall(':', image_name)
if len(slashes) == 1:
if len(colons) == 1 and image_name.find(
'/') < image_name.find(':'):
docker_hub_account, rest = image_name.split('/')
repository, tag = rest.split(':')
return cls(docker_hub_account=docker_hub_account,
repository=repository,
tag=tag)
elif len(colons) == 0:
docker_hub_account, repository = image_name.split('/')
return cls(docker_hub_account=docker_hub_account,
repository=repository,
tag='latest')
elif len(slashes) == 0:
if len(colons) == 1:
repository, tag = image_name.split(':')
return cls(docker_hub_account=None,
repository=repository,
tag=tag)
elif len(colons) == 0:
return cls(docker_hub_account=None,
repository=image_name,
tag='latest')
raise ValueError()
@classmethod
def get_image(cls, service_name):
""" Constructs an Image instance for a service.
Args:
service_name (str): The name of either a 21 service in the 21dotco/two1 repository or a user service
added to ServiceManager.USER_SERVICES_FILE by ServiceManager.add_service.
Returns:
Image: An Image instance corresponding to the given service.
"""
if service_name in cls.available_21_services():
return cls.Image(
docker_hub_account='21dotco',
repository='two1',
tag=service_name if service_name
in Two1Composer.BASE_SERVICES else 'service-%s' %
service_name)
elif service_name in cls.available_user_services():
return cls.Image(**cls._get_user_service_dict()[service_name])
else:
raise ValueError()
@classmethod
def available_services(cls):
""" Returns: All available service names.
"""
return cls.available_21_services() | cls.available_user_services()
@classmethod
def available_21_services(cls):
""" Returns: All available 21 services by querying Docker Hub.
"""
service_image_data = requests.get(
os.path.join(Two1Composer.DOCKERHUB_API_URL,
Two1Composer.DOCKERHUB_REPO,
'tags')).json().get('results')
return set([
image_data['name'].split('service-')[1]
for image_data in service_image_data
if re.match(r'^service-', image_data['name'])
])
@classmethod
def available_user_services(cls):
""" Returns: All available user services.
"""
return set(cls._get_user_service_dict().keys())
@classmethod
def add_service(cls, service_name, image_name_string,
service_successfully_added_hook,
service_already_exists_hook,
service_failed_to_add_hook):
""" Adds a new service definition to ServiceManager.USER_SERVICES_FILE.
Args:
service_name (str): Name of the service definition to add.
image_name_string (str): Docker image name for the service definition.
"""
service_dict = cls._get_user_service_dict()
if service_name in service_dict:
service_already_exists_hook(service_name)
else:
service_dict[service_name] = cls.Image.from_string(
image_name_string)._asdict()
if cls._commit_user_service_dict(service_dict):
service_successfully_added_hook(service_name)
else:
service_failed_to_add_hook(service_name)
@classmethod
def remove_service(cls, service_name,
service_successfully_removed_hook,
service_does_not_exists_hook,
service_failed_to_remove_hook):
""" Removes a service definition from ServiceManager.USER_SERVICES_FILE.
Args:
service_name (str): Name of the service definition to remove.
"""
service_dict = cls._get_user_service_dict()
if service_name in service_dict:
del service_dict[service_name]
if cls._commit_user_service_dict(service_dict):
service_successfully_removed_hook(service_name)
else:
service_failed_to_remove_hook(service_name)
else:
service_does_not_exists_hook(service_name)
@classmethod
def _get_user_service_dict(cls):
""" Returns: ServiceManager.USER_SERVICES_FILE as a dict.
"""
try:
with open(cls.USER_SERVICES_FILE, 'r') as data_file:
service_dict = json.load(data_file)
except:
return {}
else:
return service_dict
@classmethod
def _commit_user_service_dict(cls, service_dict):
""" Writes a dict of user services to ServiceManager.USER_SERVICES_FILE in json format.
Args:
service_dict (dict): A dictionary of user services of the form
{service_name : _as_dict representation of corresponding Image instance..}.
Returns:
bool: True iff no exceptions were raised when writing service_dict to ServiceManager.USER_SERVICES_FILE
as json.
"""
try:
with open(cls.USER_SERVICES_FILE, 'w') as outfile:
json.dump(service_dict, outfile)
except:
return False
else:
return True
class ComposerYAMLContext(YamlDataContext):
""" Context manager for composer YAML service file.
"""
def __init__(self,
username=None,
password=None,
server_port=None,
mnemonic=None):
self.username = username
self.password = password
self.server_port = server_port
self.mnemonic = mnemonic
super().__init__(Two1Composer.COMPOSE_FILE)
def __enter__(self):
sup = super().__enter__()
for service in self.data['services']:
service_definition = self.data['services'][service]
if 'environment' in service_definition:
if 'TWO1_USERNAME' in service_definition[
'environment'] and self.username is not None:
service_definition['environment'][
'TWO1_USERNAME'] = self.username
if 'TWO1_PASSWORD' in service_definition[
'environment'] and self.password is not None:
service_definition['environment'][
'TWO1_PASSWORD'] = self.password
if 'TWO1_WALLET_MNEMONIC' in service_definition[
'environment'] and self.mnemonic is not None:
service_definition['environment'][
'TWO1_WALLET_MNEMONIC'] = self.mnemonic
if 'PAYMENT_SERVER_IP' in service_definition[
'environment'] and self.server_port is not None:
rest = service_definition['environment'][
'PAYMENT_SERVER_IP'].rsplit(':', maxsplit=1)[-1]
service_definition['environment'][
'PAYMENT_SERVER_IP'] = '%s:%s' % (rest,
self.server_port)
return sup
def _filler(self):
""" Create the base service description file.
"""
return {
'version': '2',
'services': {
'base': {
'image': '%s:base' % Two1Composer.DOCKERHUB_REPO,
},
'router': {
'image':
'%s:router' % Two1Composer.DOCKERHUB_REPO,
'container_name':
'sell_router',
'restart':
'always',
'volumes': [
Two1Composer.SITES_ENABLED_PATH +
":/etc/nginx/sites-enabled",
Two1Composer.SITES_AVAILABLE_PATH +
":/etc/nginx/sites-available",
],
'ports':
['%s:%s' % (self.server_port, self.server_port)],
'links': [
'payments:payments',
],
},
'payments': {
'image': '%s:payments' % Two1Composer.DOCKERHUB_REPO,
'depends_on': ['base'],
'container_name': 'sell_payments',
'restart': 'always',
'environment': {
"TWO1_USERNAME": str(self.username),
"TWO1_PASSWORD": str(self.password),
"TWO1_WALLET_MNEMONIC": str(self.mnemonic)
},
'volumes': [Two1Composer.DB_DIR + ":/usr/src/db/"],
'logging': {
'driver': 'json-file'
},
'cap_drop': ['ALL'],
'cap_add': [
'DAC_OVERRIDE',
'NET_RAW',
],
}
}
}
# public api
def connect(self, machine_env, host, machine_config_file):
""" Connect service composer to machine layer.
Args:
machine_env (dict): Environment dictionary for the docker client of the machine layer.
host (str): Hostname of the machine layer docker daemon.
machine_config_file (str): Path to the config file for the machine layer.
"""
self.machine_env = machine_env
self.machine_host = host
with open(machine_config_file, 'r') as f:
self.machine_config = json.load(f)
self.docker_client = Client(
**docker_env(assert_hostname=False, environment=self.machine_env))
self._connected = ComposerState.CONNECTED
def initialize_server(self, username, password, server_port, wallet=None):
""" Initialize micropayments server.
Define boilerplate services, networks, and volumes composer file
and nginx server config.
Generates a wallet mnemonic if non-existent.
Args:
username (str): Username to log in with.
password (str): Password to log in with.
server_port (int): The server port that the router is running on.
wallet: The wallet to use for the payments server and subsequent services.
"""
self._create_base_server(
server_port) # create base router server config
self._create_payments_route() # create route to payments server
new_wallet = None # rv[1], not None if mnemonic is replaced in this function
# generate service description (yaml)
with self.ComposerYAMLContext(username, password,
server_port) as composer_yaml:
try:
mnemonic = composer_yaml['services']['payments'][
'environment']['TWO1_WALLET_MNEMONIC']
if not mnemonic or mnemonic == str(
None): # if mnemonic is Falsy or uninitialized
raise ValueError()
except (
KeyError, ValueError
): # catches if mnemonic is Falsy or doesn't exist in dict tree
new_machine_wallet = self.default_wallet.create(
self.provider)[1]
composer_yaml['services']['payments']['environment'][
'TWO1_WALLET_MNEMONIC'] = new_machine_wallet
new_wallet = new_machine_wallet
return 0, new_wallet
def pull_image(self, image, image_sucessfully_pulled_hook,
image_failed_to_pull_hook, image_is_local_hook,
image_is_malformed_hook):
""" Pulls an Image instance iff it is a Docker Hub image.
Args:
image (Image): An Image instance.
"""
if image.is_dockerhub_image:
try:
self.docker_client.pull(
'%s/%s' % (image.docker_hub_account, image.repository),
tag=image.tag,
stream=False)
except:
image_failed_to_pull_hook(image)
else:
image_sucessfully_pulled_hook(image)
elif image.is_local_image:
image_is_local_hook(image)
else:
image_is_malformed_hook(image)
def start_services(self, service_names, failed_to_start_hook, started_hook,
failed_to_restart_hook, restarted_hook,
failed_to_up_hook, up_hook):
""" Start selected services.
Args:
service_names (list): List of service names to start.
failed_to_start_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to start.
started_hook (Callable): A callable hook that takes in a service name and is run when said service starts.
failed_to_restart_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to restart.
restarted_hook (Callable): A callable hook that takes in a service name and is run when said service
restarts.
failed_to_up_hook (Callable): A callable hook that takes in a service name and is run when said service
fails to go up.
up_hook (Callable): A callable hook that takes in a service name and is run when said service goes up.
"""
self._start_sell_service('base', failed_to_start_hook, started_hook,
failed_to_up_hook, up_hook)
self._start_sell_service('router', failed_to_start_hook, started_hook,
failed_to_up_hook, up_hook)
self._start_sell_service('payments', failed_to_start_hook,
started_hook, failed_to_up_hook, up_hook)
self._restart_sell_service('router', failed_to_start_hook,
started_hook, failed_to_restart_hook,
restarted_hook, failed_to_up_hook, up_hook)
# Attempt to start all market services
for service_name in service_names:
try:
image = self.ServiceManager.get_image(service_name)
container_name = self.service_name_2_container_name(
service_name)
# create nginx routes for service_name
self._create_service_route(service_name)
# add service_name to docker compose file
with self.ComposerYAMLContext() as docker_compose_yaml:
username = docker_compose_yaml['services']['payments'][
'environment']['TWO1_USERNAME']
password = docker_compose_yaml['services']['payments'][
'environment']['TWO1_PASSWORD']
mnemonic = docker_compose_yaml['services']['payments'][
'environment']['TWO1_WALLET_MNEMONIC']
docker_compose_yaml['services'][service_name] = {
'image': str(image),
'container_name': container_name,
'depends_on': ['base'],
'restart': 'always',
'environment': {
"TWO1_USERNAME":
str(username),
"TWO1_PASSWORD":
str(password),
"TWO1_WALLET_MNEMONIC":
str(mnemonic),
"SERVICE":
str(service_name),
"PAYMENT_SERVER_IP":
"http://%s:%s" %
(self.machine_host,
self.machine_config["server_port"])
},
'volumes': [Two1Composer.DB_DIR + ":/usr/src/db/"],
'logging': {
'driver': 'json-file'
},
'cap_drop': ['ALL'],
'cap_add': [
'DAC_OVERRIDE',
'NET_RAW',
],
}
link_str = '%s:%s' % (service_name, service_name)
if link_str not in docker_compose_yaml['services'][
'router']['links']:
docker_compose_yaml['services']['router'][
'links'].append(link_str)
except:
# something went wrong while configuring service_name
failed_to_start_hook(service_name)
else:
# attempt to build service_name
self._start_sell_service(service_name, failed_to_start_hook,
started_hook, failed_to_up_hook,
up_hook)
self._restart_sell_service('router', failed_to_start_hook,
started_hook, failed_to_restart_hook,
restarted_hook, failed_to_up_hook, up_hook)
def _start_sell_service(self,
service_name,
failed_to_start_hook,
started_hook,
failed_to_up_hook,
up_hook,
timeout=Two1Composer.SERVICE_START_TIMEOUT):
try:
subprocess.check_output([
"docker-compose", "-f", Two1Composer.COMPOSE_FILE, "up", "-d",
service_name
],
stderr=subprocess.DEVNULL,
env=self.machine_env)
except subprocess.CalledProcessError:
failed_to_start_hook(service_name)
else:
started_hook(service_name)
if service_name == 'router':
time.sleep(5)
elif service_name != 'router' and service_name != 'base':
start = time.clock()
exec_id = self.docker_client.exec_create(
'sell_router', "curl %s:5000" % service_name)['Id']
self.docker_client.exec_start(exec_id)
running = True
while time.clock() - start < timeout and running is True:
running = self.docker_client.exec_inspect(
exec_id)['Running']
if running is True:
failed_to_up_hook(service_name)
else:
up_hook(service_name)
def _restart_sell_service(self, service_name, failed_to_start_hook,
started_hook, failed_to_restart_hook,
restarted_hook, failed_to_up_hook, up_hook):
try:
self.docker_client.stop("sell_%s" % service_name)
except:
is_restart = False
else:
is_restart = True
self._start_sell_service(
service_name,
failed_to_restart_hook if is_restart else failed_to_start_hook,
restarted_hook if is_restart else started_hook, failed_to_up_hook,
up_hook)
def stop_services(self, service_names,
service_found_stopped_and_removed_hook,
service_failed_to_stop_hook,
service_failed_to_be_removed_hook,
service_not_found_hook):
""" Stop selected services and remove containers.
Args:
service_names (set): Set of services to stop.
service_found_stopped_and_removed_hook (Callable): A callable hook that takes in a service name and is run
when said service is found, stopped, and removed.
service_failed_to_stop_hook (Callable): A callable hook that takes in a service name and is run when said
service fails to be stopped.
service_failed_to_be_removed_hook (Callable): A callable hook that takes in a service name and is run when
said service fails to be removed.
service_not_found_hook (Callable): A callable hook that takes in a service name and is run when said service
isn't found.
"""
for service_name in service_names:
if service_name in self.get_running_services():
container_name = self.service_name_2_container_name(
service_name)
try:
self.docker_client.stop(container_name)
except:
service_failed_to_stop_hook(service_name)
else:
try:
self.docker_client.remove_container(container_name)
except:
service_failed_to_be_removed_hook(service_name)
else:
service_found_stopped_and_removed_hook(service_name)
else:
service_not_found_hook(service_name)
def silently_force_stop_all_services(self):
running_container_names = self.docker_client.containers(
filters={"status": "running"})
for container_name in running_container_names:
self.docker_client.remove_container(container_name, force=True)
@staticmethod
def container_names_2_service_names(container_definitions):
""" Return service names from container definitions.
See service_name_2_container_name for the inverse operation but on one service name.
Args:
container_definitions (list): List of container descriptions as returned by self.docker_client.containers.
Returns:
set: Set of service names generated by removing the 'sell_' prefix from the containers' names.
"""
return set([
container_definition['Names'][0][6:]
for container_definition in container_definitions
])
@staticmethod
def service_name_2_container_name(service_name):
""" Generates a container name from a service name by prepending 'sell_'
"""
return 'sell_%s' % service_name
def status_services(self, services):
""" Gets running status of specified services.
Args:
services (list): List of services to get status for.
"""
existent_services = self.get_services(all=True)
running_services = self.get_services(filters={"status": "running"})
exited_services = self.get_services(filters={"status": "exited"})
return {
"running": running_services & services,
"exited": exited_services & services,
"nonexistent": services - existent_services
}
def get_services(self, *args, **kwargs):
""" Call docker_client.containers | convert resulting container names to service names | remove base services
"""
return self.container_names_2_service_names(
self.docker_client.containers(*args, **
kwargs)) - Two1Composer.BASE_SERVICES
def get_running_services(self):
""" Get list of currently running services that aren't 21 base services.
Returns:
set: Set of currently running services.
"""
return self.get_services(filters={"status": "running"})
def status_router(self, service_running_hook, service_unknown_state_hook):
""" Get status of Nginx router container.
Args:
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
"""
if len(
self.docker_client.containers(all=True,
filters={
"name": "sell_router",
"status": "running"
})) == 1:
service_running_hook("router")
else:
service_unknown_state_hook("router")
def status_payments_server(self, service_running_hook,
service_unknown_state_hook):
""" Get status of payment channels server.
Args:
service_running_hook (Callable): A callable hook that takes in a service name and is run when said service
is running.
service_unknown_state_hook (Callable): A callable hook that takes in a service name and is run when said
service is in an unknown state.
"""
if len(
self.docker_client.containers(all=True,
filters={
"name": "sell_payments",
"status": "running"
})) == 1:
service_running_hook("payments")
else:
service_unknown_state_hook("payments")
@staticmethod
def _create_base_server(server_port):
""" Create nginx base server config.
Args:
server_port (int): port for 21 sell server.
"""
try:
# create nginx router dirs
shutil.rmtree(Two1Composer.SITES_ENABLED_PATH, ignore_errors=True)
shutil.rmtree(Two1Composer.SITES_AVAILABLE_PATH,
ignore_errors=True)
os.makedirs(Two1Composer.SITES_ENABLED_PATH, exist_ok=True)
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
# create base nginx server
with open(
os.path.join(Two1Composer.SITES_ENABLED_PATH,
"two1baseserver"), 'w') as f:
f.write("server {\n"
" listen " + str(server_port) + ";\n"
" include /etc/nginx/sites-available/*;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerServiceDefinitionException()
@staticmethod
def _create_service_route(service):
""" Create route for container service.
"""
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
try:
with open(os.path.join(Two1Composer.SITES_AVAILABLE_PATH, service),
'w') as f:
f.write(
"location /" + service + " {\n"
" rewrite ^/" + service + "/?(.*) /$1 break;\n"
" proxy_pass http://" + service + ":" + str(5000) +
";\n"
" proxy_set_header Host $host;\n"
" proxy_set_header X-Real-IP $remote_addr;\n"
" proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerRouteException()
@staticmethod
def _create_payments_route():
""" Add route to payments server.
"""
os.makedirs(Two1Composer.SITES_AVAILABLE_PATH, exist_ok=True)
try:
# write nginx route for payments server
with open(
os.path.join(Two1Composer.SITES_AVAILABLE_PATH,
"payments"), 'w') as f:
f.write(
"location /payment {\n"
" proxy_pass http://payments:" + str(5000) + ";\n"
" proxy_set_header Host $host;\n"
" proxy_set_header X-Real-IP $remote_addr;\n"
" proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n"
"}\n")
except Exception:
raise exceptions.Two1ComposerRouteException()
def publish_service(self, service_name, host_override, rest_client,
published_hook, already_published_hook,
failed_to_publish_hook, unknown_publish_error_hook):
strm, stat = self.docker_client.get_archive(
'sell_%s' % service_name, '/usr/src/app/manifest.yaml')
with tarfile.open(fileobj=BytesIO(strm.read()), mode='r') as tf:
manifest = yaml.load(tf.extractfile(stat[u'name']).read().decode())
manifest['host'] = host_override
try:
resp = rest_client.publish({
"manifest": manifest,
"marketplace": "21mkt"
})
except ServerRequestError as e:
if e.status_code == 403 and e.data.get("error") == "TO600":
already_published_hook(service_name)
else:
failed_to_publish_hook(service_name)
except:
unknown_publish_error_hook(service_name)
else:
if resp.status_code == 201:
published_hook(service_name)
else:
failed_to_publish_hook(service_name)
def read_server_config(self):
try:
with open(Two1Composer.COMPOSE_FILE) as f:
return yaml.load(f)
except FileNotFoundError:
return {}
def get_services_mnemonic(self):
if os.path.isfile(Two1Composer.COMPOSE_FILE):
with self.ComposerYAMLContext() as composer_yaml:
try:
maybe_mnemonic = composer_yaml['services']['payments'][
'environment']['TWO1_WALLET_MNEMONIC']
except KeyError:
rv = None
else:
rv = maybe_mnemonic
else:
rv = None
return rv
class dockerizer(default_logger):
def __init__(self, args):
default_logger.__init__(self, "dockerizer")
self.args = args
self.config = self.get_config()
self.args["eula"] = self.config["installer"]["eula"]
self.directory = (os.path.dirname(os.path.realpath(__file__)))
self.base_image_name = args["base_image"]
self.docker = Client(base_url='unix://var/run/docker.sock')
self.installer = jedox_installer(args)
self.installer.start()
sleep(15)
self.installer.stop()
sleep(15)
self.patch()
self.add()
self.build_base_image(self.base_image_name)
self.base_container = self.docker.create_container(
self.base_image_name)
self.docker.start(self.base_container)
self.docker_exec(self.base_container, self.config["docker"]["exec"])
self.commit(self.args["docker_repository"], self.args["docker_tag"])
#remove intermediate container
self.logger.info("removing base container")
self.docker.remove_container(container=self.base_container, force=True)
def get_config(self):
try:
config_file = self.args["config"]
version = self.args["jedox_version"]
j = json.load(open(config_file))
return j[version]
except KeyError as e:
self.logger.exception(e)
self.logger.error(
"Could not find the right config for version=%s in file=%s \n Aborting..."
% (version, config_file))
sys.exit(1)
def patch(self):
self.logger.info("patching files from installer")
self.change_working_directory("patch")
for p in self.config["patch"]:
target = os.path.join(self.args["jedox_home"], p["target"])
description = p.get("description", p["target"])
self.logger.info("patching : %s" % description)
subprocess.check_call("patch %s < %s" % (target, p["source"]),
shell=True)
def add(self):
self.logger.info("adding additional content to installation")
self.change_working_directory("add")
for a in self.config["add"]:
target = os.path.join(self.args["jedox_home"], a["target"])
self.logger.info("copy %s to %s" % (a["source"], target))
shutil.copy(a["source"], target)
def change_working_directory(self, area):
working_directory = os.path.join(self.directory, area,
self.args["jedox_version"])
self.logger.info("working dir is now %s" % working_directory)
os.chdir(working_directory)
def build_base_image(self, image_name="jedox/base"):
os.chdir(self.args["jedox_home"])
self.logger.info(
"Import Jedox Suite into intermediate docker image '%s'" %
image_name)
subprocess.check_call(
"""tar --to-stdout --numeric-owner --exclude=/proc --exclude=/sys --exclude='*.tar.gz' --exclude='*.log' -c ./ | docker import --change "CMD while true; do ping 8.8.8.8; done" --change "ENV TERM=xterm" - %s"""
% image_name,
shell=True)
self.logger.info("successfully create basecontainer %s" % image_name)
def docker_exec(self, myContainer, exec_list):
self.docker.timeout = 300
for e in exec_list:
if "description" in e: #print description in logs if available
self.logger.info(e["description"])
exec_c = self.docker.exec_create(myContainer,
e["cmd"],
stdout=True,
stderr=True)
output = self.docker.exec_start(exec_c)
self.logger.debug(self.docker.exec_inspect(exec_c))
self.logger.info(output)
self.logger.debug("all exec done")
def commit(self, repository, tag):
tag = Template(self.args["docker_tag"]).safe_substitute(
jedox_version=self.args["jedox_version"])
self.logger.info("commiting finale image %s to %s : %s" %
(self.base_container, repository, tag))
config = {
"CMD": "/entrypoint",
"EXPOSE": "[80,7777]",
}
self.docker.commit(self.base_container, repository, tag, conf=config)
class dockerizer(default_logger):
def __init__(self,args):
default_logger.__init__(self,"dockerizer")
self.args=args
self.config=self.get_config()
self.args["eula"]=self.config["installer"]["eula"]
self.directory=(os.path.dirname(os.path.realpath(__file__)))
self.base_image_name=args["base_image"]
self.docker=Client(base_url='unix://var/run/docker.sock')
self.installer=jedox_installer(args)
self.installer.start()
sleep(15)
self.installer.stop()
sleep(15)
self.patch()
self.add()
self.build_base_image(self.base_image_name)
self.base_container=self.docker.create_container(self.base_image_name)
self.docker.start(self.base_container)
self.docker_exec(self.base_container,self.config["docker"]["exec"])
self.commit(self.args["docker_repository"],self.args["docker_tag"])
#remove intermediate container
self.logger.info("removing base container")
self.docker.remove_container(container=self.base_container,force=True)
def get_config(self):
try :
config_file=self.args["config"]
version=self.args["jedox_version"]
j=json.load(open(config_file))
return j[version]
except KeyError as e:
self.logger.exception(e)
self.logger.error("Could not find the right config for version=%s in file=%s \n Aborting..." % (version,config_file))
sys.exit(1)
def patch(self):
self.logger.info("patching files from installer")
self.change_working_directory("patch")
for p in self.config["patch"]:
target=os.path.join(self.args["jedox_home"],p["target"])
description=p.get("description",p["target"])
self.logger.info("patching : %s" % description)
subprocess.check_call("patch %s < %s" % (target,p["source"]),shell=True)
def add(self):
self.logger.info("adding additional content to installation")
self.change_working_directory("add")
for a in self.config["add"]:
target=os.path.join(self.args["jedox_home"],a["target"])
self.logger.info("copy %s to %s" % (a["source"],target))
shutil.copy(a["source"],target)
def change_working_directory(self,area):
working_directory=os.path.join(self.directory,area,self.args["jedox_version"])
self.logger.info("working dir is now %s" % working_directory)
os.chdir(working_directory)
def build_base_image(self,image_name="jedox/base"):
os.chdir(self.args["jedox_home"])
self.logger.info("Import Jedox Suite into intermediate docker image '%s'" % image_name)
subprocess.check_call("""tar --to-stdout --numeric-owner --exclude=/proc --exclude=/sys --exclude='*.tar.gz' --exclude='*.log' -c ./ | docker import --change "CMD while true; do ping 8.8.8.8; done" --change "ENV TERM=xterm" - %s""" % image_name, shell=True)
self.logger.info("successfully create basecontainer %s" % image_name)
def docker_exec(self,myContainer,exec_list):
self.docker.timeout=300
for e in exec_list:
if "description" in e : #print description in logs if available
self.logger.info(e["description"])
exec_c=self.docker.exec_create(myContainer,e["cmd"],stdout=True,stderr=True)
output=self.docker.exec_start(exec_c)
self.logger.debug(self.docker.exec_inspect(exec_c))
self.logger.info(output)
self.logger.debug("all exec done")
def commit(self,repository,tag):
tag=Template(self.args["docker_tag"]).safe_substitute(jedox_version=self.args["jedox_version"])
self.logger.info("commiting finale image %s to %s : %s" % (self.base_container,repository,tag))
config={"CMD":"/entrypoint",
"EXPOSE": "[80,7777]",
}
self.docker.commit(self.base_container,repository,tag,conf=config)
class DockerCluster(object):
IMAGE_NAME_BASE = os.path.join('teradatalabs', 'pa_test')
BARE_CLUSTER_TYPE = 'bare'
"""Start/stop/control/query arbitrary clusters of docker containers.
This class is aimed at product test writers to create docker containers
for testing purposes.
"""
def __init__(self, master_host, slave_hosts,
local_mount_dir, docker_mount_dir):
# see PyDoc for all_internal_hosts() for an explanation on the
# difference between an internal and regular host
self.internal_master = master_host
self.internal_slaves = slave_hosts
self.master = master_host + '-' + str(uuid.uuid4())
self.slaves = [slave + '-' + str(uuid.uuid4())
for slave in slave_hosts]
# the root path for all local mount points; to get a particular
# container mount point call get_local_mount_dir()
self.local_mount_dir = local_mount_dir
self.mount_dir = docker_mount_dir
kwargs = kwargs_from_env()
if 'tls' in kwargs:
kwargs['tls'].assert_hostname = False
kwargs['timeout'] = 240
self.client = Client(**kwargs)
self._DOCKER_START_TIMEOUT = 30
DockerCluster.__check_if_docker_exists()
def all_hosts(self):
return self.slaves + [self.master]
def get_master(self):
return self.master
def all_internal_hosts(self):
"""The difference between this method and all_hosts() is that
all_hosts() returns the unique, "outside facing" hostnames that
docker uses. On the other hand all_internal_hosts() returns the
more human readable host aliases for the containers used internally
between containers. For example the unique master host will
look something like 'master-07d1774e-72d7-45da-bf84-081cfaa5da9a',
whereas the internal master host will be 'master'.
Returns:
List of all internal hosts with the random suffix stripped out.
"""
return [host.split('-')[0] for host in self.all_hosts()]
def get_local_mount_dir(self, host):
return os.path.join(self.local_mount_dir,
self.__get_unique_host(host))
def get_dist_dir(self, unique):
if unique:
return os.path.join(DIST_DIR, self.master)
else:
return DIST_DIR
def __get_unique_host(self, host):
matches = [unique_host for unique_host in self.all_hosts()
if unique_host.startswith(host)]
if matches:
return matches[0]
elif host in self.all_hosts():
return host
else:
raise DockerClusterException(
'Specified host: {0} does not exist.'.format(host))
@staticmethod
def __check_if_docker_exists():
try:
subprocess.call(['docker', '--version'])
except OSError:
sys.exit('Docker is not installed. Try installing it with '
'presto-admin/bin/install-docker.sh.')
def create_image(self, path_to_dockerfile_dir, image_tag, base_image,
base_image_tag=None):
self.fetch_image_if_not_present(base_image, base_image_tag)
output = self._execute_and_wait(self.client.build,
path=path_to_dockerfile_dir,
tag=image_tag,
rm=True)
if not self._is_image_present_locally(image_tag, 'latest'):
raise OSError('Unable to build image %s: %s' % (image_tag, output))
def fetch_image_if_not_present(self, image, tag=None):
if not tag and not self.client.images(image):
self._execute_and_wait(self.client.pull, image)
elif tag and not self._is_image_present_locally(image, tag):
self._execute_and_wait(self.client.pull, image, tag)
def _is_image_present_locally(self, image_name, tag):
image_name_and_tag = image_name + ':' + tag
images = self.client.images(image_name)
if images:
for image in images:
if image_name_and_tag in image['RepoTags']:
return True
return False
def start_containers(self, master_image, slave_image=None,
cmd=None, **kwargs):
self.tear_down()
self._create_host_mount_dirs()
self._create_and_start_containers(master_image, slave_image,
cmd, **kwargs)
self._ensure_docker_containers_started(master_image)
def tear_down(self):
for container_name in self.all_hosts():
self._tear_down_container(container_name)
self._remove_host_mount_dirs()
def _tear_down_container(self, container_name):
try:
shutil.rmtree(self.get_dist_dir(unique=True))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
try:
self.stop_host(container_name)
self.client.remove_container(container_name, v=True, force=True)
except APIError as e:
# container does not exist
if e.response.status_code != 404:
raise
def stop_host(self, container_name):
self.client.stop(container_name)
self.client.wait(container_name)
def start_host(self, container_name):
self.client.start(container_name)
def get_down_hostname(self, host_name):
return host_name
def _remove_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
shutil.rmtree(
self.get_local_mount_dir(container_name))
except OSError as e:
# no such file or directory
if e.errno != errno.ENOENT:
raise
def _create_host_mount_dirs(self):
for container_name in self.all_hosts():
try:
os.makedirs(
self.get_local_mount_dir(container_name))
except OSError as e:
# file exists
if e.errno != errno.EEXIST:
raise
@staticmethod
def _execute_and_wait(func, *args, **kwargs):
ret = func(*args, **kwargs)
# go through all lines in returned stream to ensure func finishes
output = ''
for line in ret:
output += line
return output
def _create_and_start_containers(self, master_image, slave_image=None,
cmd=None, **kwargs):
if slave_image:
for container_name in self.slaves:
container_mount_dir = \
self.get_local_mount_dir(container_name)
self._create_container(
slave_image, container_name,
container_name.split('-')[0], cmd
)
self.client.start(container_name,
binds={container_mount_dir:
{'bind': self.mount_dir,
'ro': False}},
**kwargs)
master_mount_dir = self.get_local_mount_dir(self.master)
self._create_container(
master_image, self.master, hostname=self.internal_master,
cmd=cmd
)
self.client.start(self.master,
binds={master_mount_dir:
{'bind': self.mount_dir,
'ro': False}},
links=zip(self.slaves, self.slaves), **kwargs)
self._add_hostnames_to_slaves()
def _create_container(self, image, container_name, hostname=None,
cmd=None):
self._execute_and_wait(self.client.create_container,
image,
detach=True,
name=container_name,
hostname=hostname,
volumes=self.local_mount_dir,
command=cmd,
mem_limit='2g')
def _add_hostnames_to_slaves(self):
ips = self.get_ip_address_dict()
additions_to_etc_hosts = ''
for host in self.all_internal_hosts():
additions_to_etc_hosts += '%s\t%s\n' % (ips[host], host)
for host in self.slaves:
self.exec_cmd_on_host(
host,
'bin/bash -c \'echo "%s" >> /etc/hosts\''
% additions_to_etc_hosts
)
def _ensure_docker_containers_started(self, image):
centos_based_images = [BASE_TD_IMAGE_NAME]
timeout = 0
is_host_started = {}
for host in self.all_hosts():
is_host_started[host] = False
while timeout < self._DOCKER_START_TIMEOUT:
for host in self.all_hosts():
atomic_is_started = True
atomic_is_started &= \
self.client.inspect_container(host)['State']['Running']
if image in centos_based_images or \
image.startswith(self.IMAGE_NAME_BASE):
atomic_is_started &= \
self._are_centos_container_services_up(host)
is_host_started[host] = atomic_is_started
if not DockerCluster._are_all_hosts_started(is_host_started):
timeout += 1
sleep(1)
else:
break
if timeout is self._DOCKER_START_TIMEOUT:
raise DockerClusterException(
'Docker container timed out on start.' + str(is_host_started))
@staticmethod
def _are_all_hosts_started(host_started_map):
all_started = True
for host in host_started_map.keys():
all_started &= host_started_map[host]
return all_started
def _are_centos_container_services_up(self, host):
"""Some essential services in our CentOS containers take some time
to start after the container itself is up. This function checks
whether those services are up and returns a boolean accordingly.
Specifically, we check that the app-admin user has been created
and that the ssh daemon is up.
Args:
host: the host to check.
Returns:
True if the specified services have started, False otherwise.
"""
ps_output = self.exec_cmd_on_host(host, 'ps')
# also ensure that the app-admin user exists
try:
user_output = self.exec_cmd_on_host(
host, 'grep app-admin /etc/passwd'
)
user_output += self.exec_cmd_on_host(host, 'stat /home/app-admin')
except OSError:
user_output = ''
if 'sshd_bootstrap' in ps_output or 'sshd\n' not in ps_output\
or not user_output:
return False
return True
def exec_cmd_on_host(self, host, cmd, raise_error=True, tty=False):
ex = self.client.exec_create(self.__get_unique_host(host), cmd,
tty=tty)
output = self.client.exec_start(ex['Id'], tty=tty)
exit_code = self.client.exec_inspect(ex['Id'])['ExitCode']
if raise_error and exit_code:
raise OSError(exit_code, output)
return output
@staticmethod
def _get_master_image_name(cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
'%s_master' % (cluster_type))
@staticmethod
def _get_slave_image_name(cluster_type):
return os.path.join(DockerCluster.IMAGE_NAME_BASE,
'%s_slave' % (cluster_type))
@staticmethod
def start_bare_cluster():
dc = DockerCluster
master_name = dc._get_master_image_name(dc.BARE_CLUSTER_TYPE)
slave_name = dc._get_slave_image_name(dc.BARE_CLUSTER_TYPE)
centos_cluster = DockerCluster('master',
['slave1', 'slave2', 'slave3'],
DEFAULT_LOCAL_MOUNT_POINT,
DEFAULT_DOCKER_MOUNT_POINT)
if not dc._check_for_images(master_name, slave_name):
centos_cluster.create_image(
BASE_TD_DOCKERFILE_DIR,
master_name,
BASE_IMAGE_NAME,
BASE_IMAGE_TAG
)
centos_cluster.create_image(
BASE_TD_DOCKERFILE_DIR,
slave_name,
BASE_IMAGE_NAME,
BASE_IMAGE_TAG
)
centos_cluster.start_containers(master_name, slave_name)
return centos_cluster
@staticmethod
def start_existing_images(cluster_type):
dc = DockerCluster
master_name = dc._get_master_image_name(cluster_type)
slave_name = dc._get_slave_image_name(cluster_type)
if not dc._check_for_images(master_name, slave_name):
return None
centos_cluster = DockerCluster('master',
['slave1', 'slave2', 'slave3'],
DEFAULT_LOCAL_MOUNT_POINT,
DEFAULT_DOCKER_MOUNT_POINT)
centos_cluster.start_containers(master_name, slave_name)
return centos_cluster
@staticmethod
def _check_for_images(master_image_name, slave_image_name):
client = Client(timeout=180)
images = client.images()
has_master_image = False
has_slave_image = False
for image in images:
if master_image_name in image['RepoTags'][0]:
has_master_image = True
if slave_image_name in image['RepoTags'][0]:
has_slave_image = True
return has_master_image and has_slave_image
def commit_images(self, cluster_type):
self.client.commit(self.master,
self._get_master_image_name(cluster_type))
self.client.commit(self.slaves[0],
self._get_slave_image_name(cluster_type))
def run_script_on_host(self, script_contents, host):
temp_script = '/tmp/tmp.sh'
self.write_content_to_host('#!/bin/bash\n%s' % script_contents,
temp_script, host)
self.exec_cmd_on_host(host, 'chmod +x %s' % temp_script)
return self.exec_cmd_on_host(host, temp_script, tty=True)
def write_content_to_host(self, content, path, host):
filename = os.path.basename(path)
dest_dir = os.path.dirname(path)
host_local_mount_point = self.get_local_mount_dir(host)
local_path = os.path.join(host_local_mount_point, filename)
with open(local_path, 'w') as config_file:
config_file.write(content)
self.exec_cmd_on_host(host, 'mkdir -p ' + dest_dir)
self.exec_cmd_on_host(
host, 'cp %s %s' % (os.path.join(self.mount_dir, filename),
dest_dir))
def copy_to_host(self, source_path, dest_host):
shutil.copy(source_path, self.get_local_mount_dir(dest_host))
def get_ip_address_dict(self):
ip_addresses = {}
for host, internal_host in zip(self.all_hosts(),
self.all_internal_hosts()):
inspect = self.client.inspect_container(host)
ip_addresses[host] = inspect['NetworkSettings']['IPAddress']
ip_addresses[internal_host] = \
inspect['NetworkSettings']['IPAddress']
return ip_addresses
def _post_presto_install(self):
for worker in self.slaves:
self.run_script_on_host(
'sed -i /node.id/d /etc/presto/node.properties; '
'uuid=$(uuidgen); '
'echo node.id=$uuid >> /etc/presto/node.properties',
worker
)
def postinstall(self, installer):
from tests.product.standalone.presto_installer \
import StandalonePrestoInstaller
_post_install_hooks = {
StandalonePrestoInstaller: DockerCluster._post_presto_install
}
hook = _post_install_hooks.get(installer, None)
if hook:
hook(self)
class DockerControl:
def __init__(self, containerObject):
self.containerObject = containerObject
self.dockerCli = Client(base_url="unix://var/run/docker.sock")
def remove(self):
labelString = "name=" + self.containerObject.name
labelDict = [labelString]
label = dict({"label": labelDict})
nameString = "/" + self.containerObject.name
containerList = self.dockerCli.containers()
for container in containerList:
if container["Names"][0] == nameString:
containerId = container["Id"]
self.dockerCli.stop(container=containerId)
self.dockerCli.remove_container(container=containerId)
def runCmd(self, cmd):
nameString = "/" + self.containerObject.name
containerList = self.dockerCli.containers()
for container in containerList:
if container["Names"][0] == nameString:
containerId = container["Id"]
execKey = self.dockerCli.exec_create(containerId, cmd)
execResult = self.dockerCli.exec_start(execKey["Id"])
dockerInfo = self.dockerCli.exec_inspect(execKey["Id"])
return execResult
def create(self):
image = self.containerObject.type
name = self.containerObject.name
domain = self.containerObject.domain
hostname = self.containerObject.name
directory = CONTAINER_VOL_DIR + "/" + name
if os.path.isdir(directory):
rmtree(directory)
os.makedirs(directory)
if image == "dns":
copy(CONTAINER_CONF_DIR + "/dnsmasq.conf", directory + "/dnsmasq.conf")
copytree(CONTAINER_CONF_DIR + "/dnsmasq.d", directory + "/dnsmasq.d")
dnsmasqConfVolume = directory + "/dnsmasq.conf:/etc/dnsmasq.conf"
dnsmasqDVolume = directory + "/dnsmasq.d:/etc/dnsmasq.d"
dVolumes = [dnsmasqConfVolume, dnsmasqDVolume]
elif image == "puppet":
puppetConfVolume = CONTAINER_VOL_DIR + "/puppet-master.conf:/etc/puppet/puppet.conf"
hieradataVolume = CONTAINER_VOL_DIR + "/hieradata:/etc/puppet/hieradata"
siteVolume = CONTAINER_VOL_DIR + "/site.pp:/etc/puppet/manifests/site.pp"
modulesVolume = CONTAINER_VOL_DIR + "/modules:/etc/puppet/modules"
dVolumes = [puppetConfVolume, hieradataVolume, siteVolume, modulesVolume]
else:
copy(CONTAINER_CONF_DIR + "/puppet.conf", directory + "/puppet.conf")
copy(CONTAINER_CONF_DIR + "/auth.conf", directory + "/auth.conf")
puppetConfVolume = directory + "/puppet.conf:/etc/puppet/puppet.conf"
authConfVolume = directory + "/auth.conf:/etc/puppet/auth.conf"
dVolumes = [puppetConfVolume, authConfVolume]
dnsList = []
if isinstance(self.containerObject.dns, dict):
for dnsServer in self.containerObject.dns.keys():
dnsServerString = self.containerObject.dns[dnsServer]["ipaddress"].split("/")[0]
dnsList.append(dnsServerString)
else:
dnsList.append(self.containerObject.dns)
dnsSearchList = [domain]
command = "/sbin/init"
host_config = create_host_config(
privileged=True,
cap_add=["NET_ADMIN"],
dns=dnsList,
dns_search=dnsSearchList,
binds=dVolumes,
network_mode="none",
)
container = self.dockerCli.create_container(
image=image,
name=name,
command=command,
# domainname=domain, hostname=name, volumes = dVolumes,
domainname=domain,
hostname=name,
volumes=dVolumes,
detach=True,
host_config=host_config,
)
self.dockerCli.start(container=container.get("Id"))
containerInfo = self.dockerCli.inspect_container(container=container.get("Id"))
containerPid = containerInfo["State"]["Pid"]
pidPath = "/proc/" + str(containerPid) + "/ns/net"
netNsPath = "/var/run/netns/" + name
os.symlink(pidPath, netNsPath)
return containerInfo
def start(self):
nameString = "/" + self.containerObject.name
containerList = self.dockerCli.containers(all=True)
for container in containerList:
if container["Names"][0] == nameString:
containerId = container["Id"]
self.dockerCli.start(container=containerId)
containerInfo = self.dockerCli.inspect_container(container=containerId)
containerPid = containerInfo["State"]["Pid"]
pidPath = "/proc/" + str(containerPid) + "/ns/net"
netNsPath = "/var/run/netns/" + self.containerObject.name
os.symlink(pidPath, netNsPath)
return containerInfo
def stop(self):
nameString = "/" + self.containerObject.name
containerList = self.dockerCli.containers()
for container in containerList:
if container["Names"][0] == nameString:
containerId = container["Id"]
self.dockerCli.stop(container=containerId)
containerInfo = self.dockerCli.inspect_container(container=containerId)
return containerInfo