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fog--fog/lib/fog/aws/emr.rb
Paul Thornthwaite 0e1daf3ddd [GH-2711] Replace Fog::Connection with XML shim
Unlike last attempt this replaces Fog::Connection with
Fog::XML::Connection which should be directly compatible.

Fog::Connection is there for old PRs but should be removed real soon.

Providers using JSON should be able to replace "XML" with "Core" within
their code to cut down on the dependency.

If I get the time I may attempt to clean up some but testing with Mock
will mean that is mostly educated guesswork.
2014-02-27 00:54:17 +00:00

133 lines
4.2 KiB
Ruby

require 'fog/aws/core'
module Fog
module AWS
class EMR < Fog::Service
extend Fog::AWS::CredentialFetcher::ServiceMethods
class IdentifierTaken < Fog::Errors::Error; end
requires :aws_access_key_id, :aws_secret_access_key
recognizes :region, :host, :path, :port, :scheme, :persistent, :use_iam_profile, :aws_session_token, :aws_credentials_expire_at
request_path 'fog/aws/requests/emr'
request :add_instance_groups
request :add_job_flow_steps
request :describe_job_flows
request :modify_instance_groups
request :run_job_flow
request :set_termination_protection
request :terminate_job_flows
# model_path 'fog/aws/models/rds'
# model :server
# collection :servers
# model :snapshot
# collection :snapshots
# model :parameter_group
# collection :parameter_groups
#
# model :parameter
# collection :parameters
#
# model :security_group
# collection :security_groups
class Mock
def initialize(options={})
Fog::Mock.not_implemented
end
end
class Real
include Fog::AWS::CredentialFetcher::ConnectionMethods
# Initialize connection to EMR
#
# ==== Notes
# options parameter must include values for :aws_access_key_id and
# :aws_secret_access_key in order to create a connection
#
# ==== Examples
# emr = EMR.new(
# :aws_access_key_id => your_aws_access_key_id,
# :aws_secret_access_key => your_aws_secret_access_key
# )
#
# ==== Parameters
# * options<~Hash> - config arguments for connection. Defaults to {}.
# * region<~String> - optional region to use. For instance, in 'eu-west-1', 'us-east-1' and etc.
#
# ==== Returns
# * EMR object with connection to AWS.
def initialize(options={})
@use_iam_profile = options[:use_iam_profile]
setup_credentials(options)
@connection_options = options[:connection_options] || {}
options[:region] ||= 'us-east-1'
@host = options[:host] || "elasticmapreduce.#{options[:region]}.amazonaws.com"
@path = options[:path] || '/'
@persistent = options[:persistent] || false
@port = options[:port] || 443
@scheme = options[:scheme] || 'https'
@connection = Fog::XML::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
@region = options[:region]
end
def reload
@connection.reset
end
private
def setup_credentials(options)
@aws_access_key_id = options[:aws_access_key_id]
@aws_secret_access_key = options[:aws_secret_access_key]
@aws_session_token = options[:aws_session_token]
@aws_credentials_expire_at = options[:aws_credentials_expire_at]
@hmac = Fog::HMAC.new('sha256', @aws_secret_access_key)
end
def request(params)
refresh_credentials_if_expired
idempotent = params.delete(:idempotent)
parser = params.delete(:parser)
body = Fog::AWS.signed_params(
params,
{
:aws_access_key_id => @aws_access_key_id,
:aws_session_token => @aws_session_token,
:hmac => @hmac,
:host => @host,
:path => @path,
:port => @port,
:version => '2009-03-31' #'2010-07-28'
}
)
begin
response = @connection.request({
:body => body,
:expects => 200,
:headers => { 'Content-Type' => 'application/x-www-form-urlencoded' },
:idempotent => idempotent,
:method => 'POST',
:parser => parser
})
rescue Excon::Errors::HTTPStatusError
raise
end
response
end
end
end
end
end