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Clean up STS regional work

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We use the AWS_DEFAULT_REGION environment variable only if the region
isn't specified explicitly in the configuration.
This commit is contained in:
Stan Hu 2021-08-20 11:10:44 -07:00
parent cbd3354777
commit dad90af22d
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GPG key ID: 8D3931AD39CC7A20
2 changed files with 31 additions and 17 deletions
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16
lib/fog/aws/credential_fetcher.rb
View file

@ -21,7 +21,7 @@ module Fog
if options[:use_iam_profile]
begin
role_data = nil
region = options[:region]
region = options[:region] || ENV["AWS_DEFAULT_REGION"]
if ENV["AWS_CONTAINER_CREDENTIALS_RELATIVE_URI"]
connection = options[:connection] || Excon.new(CONTAINER_CREDENTIALS_HOST)
@ -43,13 +43,14 @@ module Fog
:Version => "2011-06-15",
}
if ENV["AWS_STS_REGIONAL_ENDPOINTS"] == "regional" && ENV["AWS_DEFAULT_REGION"]
STS_ENDPOINT = "https://sts.#{ENV['AWS_DEFAULT_REGION']}.amazonaws.com"
else
STS_ENDPOINT = "https://sts.amazonaws.com"
end
sts_endpoint =
if ENV["AWS_STS_REGIONAL_ENDPOINTS"] == "regional"
"https://sts.#{region}.amazonaws.com"
else
"https://sts.amazonaws.com"
end
connection = options[:connection] || Excon.new(STS_ENDPOINT, :query => params)
connection = options[:connection] || Excon.new(sts_endpoint, :query => params)
document = Nokogiri::XML(connection.get(:idempotent => true, :expects => 200).body)
session = {
@ -82,6 +83,7 @@ module Fog
# set region by default to the one the instance is in.
credentials[:region] = region
credentials[:sts_endpoint] = sts_endpoint if sts_endpoint
#these indicate the metadata service is unavailable or has no profile setup
credentials
rescue Excon::Error => e

26
tests/credentials_tests.rb
View file

@ -83,7 +83,7 @@ Shindo.tests('AWS | credentials', ['aws']) do
aws_secret_access_key: 'dummysecret',
aws_session_token: 'dummytoken',
region: 'us-west-1',
STS_ENDPOINT: "https://sts.amazonaws.com"
sts_endpoint: "https://sts.amazonaws.com",
aws_credentials_expire_at: expires_at
) { Fog::AWS::Compute.fetch_credentials(use_iam_profile: true) }
end
@ -96,27 +96,39 @@ Shindo.tests('AWS | credentials', ['aws']) do
aws_secret_access_key: 'dummysecret',
aws_session_token: 'dummytoken',
region: 'us-west-1',
STS_ENDPOINT: "https://sts.amazonaws.com"
sts_endpoint: "https://sts.amazonaws.com",
aws_credentials_expire_at: expires_at
) { Fog::AWS::Compute.fetch_credentials(use_iam_profile: true) }
) { Fog::AWS::Compute.fetch_credentials(use_iam_profile: true, region: 'us-west-1') }
end
ENV["AWS_STS_REGIONAL_ENDPOINTS"] = "regional"
ENV["AWS_REGION"] = "us-west-1"
tests('#fetch_credentials with regional sts endpoint') do
tests('#fetch_credentials with regional STS endpoint') do
returns(
aws_access_key_id: 'dummykey',
aws_secret_access_key: 'dummysecret',
aws_session_token: 'dummytoken',
region: 'us-west-1',
STS_ENDPOINT: "https://sts.us-west-1.amazonaws.com"
sts_endpoint: "https://sts.us-west-1.amazonaws.com",
aws_credentials_expire_at: expires_at
) { Fog::AWS::Compute.fetch_credentials(use_iam_profile: true, region: 'us-west-1') }
end
ENV["AWS_DEFAULT_REGION"] = "us-west-1"
tests('#fetch_credentials with regional STS endpoint with region in env') do
returns(
aws_access_key_id: 'dummykey',
aws_secret_access_key: 'dummysecret',
aws_session_token: 'dummytoken',
region: 'us-west-1',
sts_endpoint: "https://sts.us-west-1.amazonaws.com",
aws_credentials_expire_at: expires_at
) { Fog::AWS::Compute.fetch_credentials(use_iam_profile: true) }
end
ENV["AWS_STS_REGIONAL_ENDPOINTS"] = nil
ENV["AWS_REGION"] = nil
ENV["AWS_DEFAULT_REGION"] = nil
ENV['AWS_WEB_IDENTITY_TOKEN_FILE'] = nil
compute = Fog::AWS::Compute.new(use_iam_profile: true)