Files
container.training/bin/link-to-ambassadors.py
2016-02-29 19:08:01 +00:00

39 lines
1.2 KiB
Python
Executable File

#!/usr/bin/env python
from common import ComposeFile
import yaml
config = ComposeFile()
# The ambassadors need to know the service port to use.
# Those ports must be declared here.
ports = yaml.load(open("ports.yml"))
def generate_local_addr():
last_byte = 2
while last_byte<255:
yield "127.127.0.{}".format(last_byte)
last_byte += 1
for service_name, service in config.services.items():
if "links" in service:
for link, local_addr in zip(service["links"], generate_local_addr()):
if link not in ports:
print("Skipping link {} in service {} "
"(no port mapping defined). "
"Your code will probably break."
.format(link, service_name))
continue
if "extra_hosts" not in service:
service["extra_hosts"] = {}
service["extra_hosts"][link] = local_addr
del service["links"]
if "ports" in service:
del service["ports"]
if "volumes" in service:
del service["volumes"]
if service_name in ports:
service["ports"] = [ ports[service_name] ]
config.save()