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Update for links, external_links, network_mode 

Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>
This commit is contained in:
Aanand Prasad 2016-01-26 15:53:02 +00:00
parent c39d5a3f06
commit 4736b4409a
1 changed files with 34 additions and 9 deletions
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43
contrib/migration/migrate-compose-file-v1-to-v2.py
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@ -20,20 +20,45 @@ def migrate(content):
data = ruamel.yaml.load(content, ruamel.yaml.RoundTripLoader)
service_names = data.keys()
for name, service in data.items():
# remove links and external links
service.pop('links', None)
external_links = service.pop('external_links', None)
links = service.get('links')
if links:
example_service = links[0].partition(':')[0]
log.warn(
"Service {name} has links, which no longer create environment "
"variables such as {example_service_upper}_PORT. "
"If you are using those in your application code, you should "
"instead connect directly to the hostname, e.g. "
"'{example_service}'."
.format(name=name, example_service=example_service,
example_service_upper=example_service.upper()))
external_links = service.get('external_links')
if external_links:
log.warn(
"Service {name} has external_links: {ext}, which are no longer "
"supported. See https://docs.docker.com/compose/networking/ "
"for options on how to connect external containers to the "
"compose network.".format(name=name, ext=external_links))
"Service {name} has external_links: {ext}, which now work "
"slightly differently. In particular, two containers must be "
"connected to at least one network in common in order to "
"communicate, even if explicitly linked together.\n\n"
"Either connect the external container to your app's default "
"network, or connect both the external container and your "
"service's containers to a pre-existing network. See "
"https://docs.docker.com/compose/networking/ "
"for more on how to do this."
.format(name=name, ext=external_links))
# net is now networks
# net is now network_mode
if 'net' in service:
service['networks'] = [service.pop('net')]
network_mode = service.pop('net')
# "container:<service name>" is now "service:<service name>"
if network_mode.startswith('container:'):
name = network_mode.partition(':')[2]
if name in service_names:
network_mode = 'service:{}'.format(name)
service['network_mode'] = network_mode
# create build section
if 'dockerfile' in service: