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module Fog
module AWS
class Lambda < Fog::Service
extend Fog::AWS::CredentialFetcher::ServiceMethods
requires :aws_access_key_id, :aws_secret_access_key
recognizes :host, :path, :port, :scheme, :persistent, :region, :use_iam_profile, :aws_session_token, :aws_credentials_expire_at, :version, :instrumentor, :instrumentor_name
request_path 'fog/aws/requests/lambda'
request :create_function
request :delete_function
request :get_function
request :get_function_configuration
request :invoke
request :list_functions
request :update_function_code
request :update_function_configuration
request :get_policy
request :add_permission
request :remove_permission
request :create_event_source_mapping
request :delete_event_source_mapping
request :get_event_source_mapping
request :list_event_source_mappings
request :update_event_source_mapping
class Mock
def self.data
@data ||= Hash.new do |hash, region|
hash[region] = Hash.new do |region_hash, key|
region_hash[key] = {
:functions => {},
:permissions => {},
:event_source_mappings => {}
}
end
end
end
attr_reader :region
attr_reader :account_id
attr_reader :aws_access_key_id
def initialize(options={})
@region = options[:region] || 'us-east-1'
@aws_access_key_id = options[:aws_access_key_id]
@account_id = Fog::AWS::Mock.owner_id
@module = "lambda"
Fog::AWS.validate_region!(@region)
end
def data
self.class.data[@region][@aws_access_key_id]
end
def reset_data
self.class.data[@region].delete(@aws_access_key_id)
end
end
class Real
include Fog::AWS::CredentialFetcher::ConnectionMethods
# Initialize connection to Lambda
#
# ==== Notes
# options parameter must include values for :aws_access_key_id and
# :aws_secret_access_key in order to create a connection
#
# ==== Examples
# lambda = Lambda.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 {}.
#
# ==== Returns
# * Lambda object with connection to AWS.
def initialize(options={})
@use_iam_profile = options[:use_iam_profile]
@connection_options = options[:connection_options] || {}
@instrumentor = options[:instrumentor]
@instrumentor_name = options[:instrumentor_name] || 'fog.aws.lambda'
options[:region] ||= 'us-east-1'
@region = options[:region]
@host = options[:host] || "lambda.#{options[:region]}.amazonaws.com"
@path = options[:path] || '/'
@persistent = options[:persistent] || false
@port = options[:port] || 443
@scheme = options[:scheme] || 'https'
@version = options[:version] || '2015-03-31'
@connection = Fog::Core::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
setup_credentials(options)
end
attr_reader :region
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]
@signer = Fog::AWS::SignatureV4.new( @aws_access_key_id, @aws_secret_access_key, @region, 'lambda')
end
def request(params)
refresh_credentials_if_expired
idempotent = params.delete(:idempotent)
parser = params.delete(:parser)
path = params.delete(:path)
request_path = "/#{@version}#{path}"
query = params.delete(:query) || {}
method = params.delete(:method) || 'POST'
expects = params.delete(:expects) || 200
headers = { 'Content-Type' => 'application/json' }
headers.merge!(params[:headers] || {})
request_path_to_sign = case path
when %r{^/functions/([0-9a-zA-Z\:\-\_]+)(/.+)?$}
"/#{@version}/functions/#{Fog::AWS.escape($~[1])}#{$~[2]}"
else
request_path
end
body, headers = AWS.signed_params_v4(
params,
headers,
{
:method => method,
:aws_session_token => @aws_session_token,
:signer => @signer,
:host => @host,
:path => request_path_to_sign,
:port => @port,
:query => query,
:body => params[:body]
}
)
if @instrumentor
@instrumentor.instrument("#{@instrumentor_name}.request", params) do
_request(method, request_path, query, body, headers, expects, idempotent, parser)
end
else
_request(method, request_path, query, body, headers, expects, idempotent, parser)
end
end
def _request(method, path, query, body, headers, expects, idempotent, parser=nil)
response = process_response(@connection.request({
:path => path,
:query => query,
:body => body,
:expects => expects,
:idempotent => idempotent,
:headers => headers,
:method => method
}), parser)
rescue Excon::Errors::HTTPStatusError => error
match = Fog::AWS::Errors.match_error(error)
raise if match.empty?
raise Fog::AWS::Lambda::Error.slurp(error,
"#{match[:code]} => #{match[:message]}")
end
def process_response(response, parser)
if response &&
response.body &&
response.body.is_a?(String) &&
!response.body.strip.empty? &&
Fog::AWS.json_response?(response)
begin
response.body = Fog::JSON.decode(response.body)
response.body = parser.process(response.body) if parser
rescue Fog::JSON::DecodeError => e
Fog::Logger.warning("Error parsing response json - #{e}")
response.body = {}
end
end
response
end
end
end
end
end
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