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ec2_facts: add ansible_ec2_placement_region key/value pair for EC2 region.

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This commit is contained in:
Blair Zajac 2013-04-06 19:57:03 -07:00
parent b8c5a58b7f
commit 5d0f78d571
1 changed files with 29 additions and 0 deletions
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29
library/ec2_facts
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@ -45,6 +45,15 @@ class Ec2Metadata(object):
ec2_sshdata_uri = 'http://169.254.169.254/latest/meta-data/public-keys/0/openssh-key'
ec2_userdata_uri = 'http://169.254.169.254/latest/user-data/'
AWS_REGIONS = ('ap-northeast-1',
'ap-southeast-1',
'ap-southeast-2',
'eu-west-1',
'sa-east-1',
'us-east-1',
'us-west-1',
'us-west-2')
def __init__(self, ec2_metadata_uri=None, ec2_sshdata_uri=None, ec2_userdata_uri=None):
self.uri_meta = ec2_metadata_uri or self.ec2_metadata_uri
self.uri_user = ec2_userdata_uri or self.ec2_userdata_uri
@ -104,12 +113,32 @@ class Ec2Metadata(object):
newkey = key.replace(':','_').replace('-','_')
data[newkey] = value
def add_ec2_region(self, data):
"""Use the 'ansible_ec2_placement_availability_zone' key/value
pair to add 'ansible_ec2_placement_region' key/value pair with
the EC2 region name.
"""
# Only add a 'ansible_ec2_placement_region' key if the
# 'ansible_ec2_placement_availability_zone' exists.
zone = data.get('ansible_ec2_placement_availability_zone')
if zone is not None:
# Use the zone name as the region name unless the zone
# name starts with a known AWS region name.
region = zone
for r in self.AWS_REGIONS:
if zone.startswith(r):
region = r
break
data['ansible_ec2_placement_region'] = region
def run(self):
self.fetch(self.uri_meta) # populate _data
data = self._mangle_fields(self._data, self.uri_meta)
data[self._prefix % 'user-data'] = self._fetch(self.uri_user)
data[self._prefix % 'public-key'] = self._fetch(self.uri_ssh)
self.fix_invalid_varnames(data)
self.add_ec2_region(data)
return data
def main():