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fog--fog/lib/fog/aws/emr.rb

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require 'fog/aws'
module Fog
module AWS
class EMR < Fog::Service
class IdentifierTaken < Fog::Errors::Error; end
requires :aws_access_key_id, :aws_secret_access_key
recognizes :region, :host, :path, :port, :scheme, :persistent
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
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#
# model :parameter
# collection :parameters
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#
# model :security_group
# collection :security_groups
class Mock
def initialize(options={})
Fog::Mock.not_implemented
end
end
class Real
# 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 {}.
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# * 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={})
@aws_access_key_id = options[:aws_access_key_id]
@aws_secret_access_key = options[:aws_secret_access_key]
@connection_options = options[:connection_options] || {}
@hmac = Fog::HMAC.new('sha256', @aws_secret_access_key)
options[:region] ||= 'us-east-1'
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@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::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
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@region = options[:region]
end
def reload
@connection.reset
end
private
def request(params)
idempotent = params.delete(:idempotent)
parser = params.delete(:parser)
body = Fog::AWS.signed_params(
params,
{
:aws_access_key_id => @aws_access_key_id,
: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,
:host => @host,
:method => 'POST',
:parser => parser
})
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rescue Excon::Errors::HTTPStatusError
raise
end
response
end
end
end
end
end