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# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
# This software is distributed under the terms and conditions of the 'Apache-2.0'
# license which can be found in the file 'LICENSE' in this package distribution
# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
import os
import json
import glob
import uuid
import shutil
import errno
from uuid import uuid4
from oslo_config import cfg
from oslo_log import log as logging
from jinja2 import FileSystemLoader, Environment
from moon_utilities.options import get_docker_template_dir
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
DOMAIN = "moon_orchestrator"
__CWD__ = os.path.dirname(os.path.abspath(__file__))
TEMPLATES_FOLDER = get_docker_template_dir()
class DockerBase:
docker = None
image_id = None
tag = 'moon/component'
tmp_dir = os.path.join("/tmp", uuid.uuid4().hex)
name = ""
__build = """RUN mkdir -p /etc/moon/
COPY conf /etc/moon/
ADD dist/{py_pkg}.tar.gz /root
WORKDIR /root/{py_pkg}
RUN pip3 install --upgrade -r requirements.txt
RUN pip3 install --upgrade .
"""
def __init__(self,
name,
run_cmd,
host=None,
build_cmd=None,
conf_file="",
id=None,
docker=None,
network_config=None,
tag="",
port=None
):
self.conf_file = conf_file
self.docker = docker
self.network_config = network_config
self.name = name
self.id = id if id else name + "_" + uuid4().hex
self.tag = "moon/{}".format(name)
self.build_cmd = build_cmd if build_cmd else self.__build
self.run_cmd = run_cmd
self.host = host
self.docker_id = id
self.port = port
containers = self.docker.containers()
if self.id not in map(lambda x: x['Id'], containers):
self.create_container(tag)
self.run_docker()
else:
LOG.info("Component {} already running...".format(name))
def create_container(self, container=None):
if not container:
proxy = CONF.proxy
if CONF.proxy:
proxy = "ENV http_proxy {0}\nENV https_proxy {0}\n".format(CONF.proxy)
run = self.build_cmd.format(
py_pkg=self.__get_last_version_of_pkg(self.name).replace(".tar.gz", "").replace("dist/", ""),
port=self.port
)
docker_str = self.__get_template().render(run=run, cmd=self.run_cmd, proxy=proxy)
self.__create_tmp_dir(docker_str)
self.create_docker(docker_str)
else:
self.tag = container
def __create_tmp_dir(self, docker_str):
try:
os.mkdir(self.tmp_dir)
except OSError as e:
LOG.warning("Problem when creating temporary directory ({})".format(e))
try:
os.mkdir(os.path.join(self.tmp_dir, "dist"))
except OSError as e:
LOG.warning("Problem when creating temporary directory ({})".format(e))
for _file in glob.glob("{}/*".format(CONF.dist_dir)):
LOG.info("Copying {}".format(_file))
shutil.copy(_file, os.path.join(self.tmp_dir, "dist"))
try:
shutil.copytree(os.path.dirname(self.conf_file), os.path.join(self.tmp_dir, "conf"))
except OSError as exc:
if exc.errno == errno.ENOTDIR:
shutil.copy(os.path.dirname(self.conf_file), os.path.join(self.tmp_dir, "conf"))
elif exc.errno == errno.EEXIST:
pass
else:
LOG.info("exc.errno = {}".format(exc.errno))
raise
open("{}/Dockerfile".format(self.tmp_dir), "w").write(docker_str)
def __get_docker_network(self, name="moon"):
if self.host:
return self.docker.create_networking_config({
name: self.docker.create_endpoint_config(
aliases=[self.id, ],
ipv4_address=self.host,
)
})
else:
return self.docker.create_networking_config({
name: self.docker.create_endpoint_config(
aliases=[self.id, ]
)
})
@staticmethod
def __get_last_version_of_pkg(name):
files = []
for filename in glob.glob("{}/{}*".format(CONF.dist_dir, name)):
files.append(filename)
files.sort()
try:
return os.path.basename(files[-1])
except Exception as e:
LOG.error("__get_last_version_of_pkg {}/{}*".format(CONF.dist_dir, name))
raise e
def run_docker(self):
LOG.info("run_docker hostname={}".format(self.id.replace("_", "-")))
if self.port:
host_config = self.docker.create_host_config(port_bindings={
self.port: self.port
})
else:
host_config = self.docker.create_host_config()
output = self.docker.create_container(image=self.tag,
command=list(self.run_cmd),
hostname=str(self.id.replace("_", "-"))[:63],
name=str(self.id),
networking_config=self.__get_docker_network(),
host_config=host_config
)
container_data = self.docker.inspect_container(output['Id'])
name = container_data["Name"]
LOG.info("Running container {} with ID {}".format(self.tag, output))
LOG.info("output id = {}".format(output['Id']))
self.docker.start(container=output['Id'])
LOG.info("Running container output {}".format(self.docker.logs(
container=name,
# stdout=True,
# stderr=True
).decode("utf-8")))
self.name = name
self.docker_id = output['Id']
def create_docker(self, docker_str):
# f = BytesIO(docker_str.encode('utf-8'))
LOG.info("Building {}".format(self.tmp_dir))
# TODO (dthom): halt on built errors (or emit a log)
_output = self.docker.build(path=self.tmp_dir, rm=True, tag=self.tag)
# _output = self.cli.build(fileobj=f, rm=True, tag=self.tag, stream=True)
for line in _output:
jline = json.loads(line.decode("utf-8"))
if "stream" in jline:
LOG.info("\033[33m" + jline["stream"].strip() + "\033[m")
else:
LOG.info("\033[33m" + str(jline).strip() + "\033[m")
else:
LOG.debug(_output)
LOG.info("tag = {}".format(self.tag))
LOG.info("images = {}".format(self.docker.images(name=self.tag)))
self.image_id = self.docker.images(name=self.tag)[0]['Id']
@staticmethod
def __get_template(filename="template.dockerfile"):
simple_loader = FileSystemLoader(TEMPLATES_FOLDER)
env = Environment(loader=simple_loader)
return env.get_template(filename)
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