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support variable substitution for DOCKER_HOST_IP #500

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support variable substitution for DOCKER_HOST_IP #500

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19 changes: 17 additions & 2 deletions fig/cli/command.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
from __future__ import absolute_import
from docker import Client
from requests.exceptions import ConnectionError
from urlparse import urlparse
import errno
import logging
import os
Expand Down Expand Up @@ -68,12 +69,26 @@ def get_config(self, config_path):
raise errors.FigFileNotFound(os.path.basename(e.filename))
raise errors.UserError(six.text_type(e))

def expand_env_vars(self, config, base_url):
def expand(env):
for k, v in env.iteritems():
url = urlparse(base_url)
if isinstance(v, basestring):
env[k] = v.replace('$DOCKER_HOST_IP', url.hostname)
return env
for k, v in config.iteritems():
if 'environment' in config[k]:
config[k]['environment'] = expand(config[k]['environment'])
return config

def get_project(self, config_path, project_name=None, verbose=False):
config = self.get_config(config_path)
client = self.get_client(verbose=verbose)
try:
return Project.from_config(
self.get_project_name(config_path, project_name),
self.get_config(config_path),
self.get_client(verbose=verbose))
self.expand_env_vars(config, client.base_url),
client)
except ConfigError as e:
raise errors.UserError(six.text_type(e))

Expand Down