Copyright	(c) 2013-2021 Brendan Hay
License	Mozilla Public License, v. 2.0.
Maintainer	Brendan Hay <brendan.g.hay+amazonka@gmail.com>
Stability	auto-generated
Portability	non-portable (GHC extensions)
Safe Haskell	None

Amazonka.EMR.Types.ScalingRule

Description

Synopsis

Documentation

data ScalingRule Source #

A scale-in or scale-out rule that defines scaling activity, including the CloudWatch metric alarm that triggers activity, how EC2 instances are added or removed, and the periodicity of adjustments. The automatic scaling policy for an instance group can comprise one or more automatic scaling rules.

See: newScalingRule smart constructor.

Constructors

ScalingRule'

Fields

description :: Maybe Text
A friendly, more verbose description of the automatic scaling rule.
name :: Text
The name used to identify an automatic scaling rule. Rule names must be unique within a scaling policy.
action :: ScalingAction
The conditions that trigger an automatic scaling activity.
trigger :: ScalingTrigger
The CloudWatch alarm definition that determines when automatic scaling activity is triggered.

Instances

Instances details

Eq ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods (==) :: ScalingRule -> ScalingRule -> Bool # (/=) :: ScalingRule -> ScalingRule -> Bool #
Read ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods readsPrec :: Int -> ReadS ScalingRule # readList :: ReadS [ScalingRule] # readPrec :: ReadPrec ScalingRule # readListPrec :: ReadPrec [ScalingRule] #
Show ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods showsPrec :: Int -> ScalingRule -> ShowS # show :: ScalingRule -> String # showList :: [ScalingRule] -> ShowS #
Generic ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Associated Types type Rep ScalingRule :: Type -> Type # Methods from :: ScalingRule -> Rep ScalingRule x # to :: Rep ScalingRule x -> ScalingRule #
NFData ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods rnf :: ScalingRule -> () #
Hashable ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods hashWithSalt :: Int -> ScalingRule -> Int # hash :: ScalingRule -> Int #
ToJSON ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods toJSON :: ScalingRule -> Value # toEncoding :: ScalingRule -> Encoding # toJSONList :: [ScalingRule] -> Value # toEncodingList :: [ScalingRule] -> Encoding #
FromJSON ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule Methods parseJSON :: Value -> Parser ScalingRule # parseJSONList :: Value -> Parser [ScalingRule] #
type Rep ScalingRule Source #
Instance details Defined in Amazonka.EMR.Types.ScalingRule type Rep ScalingRule = D1 ('MetaData "ScalingRule" "Amazonka.EMR.Types.ScalingRule" "libZSservicesZSamazonka-emrZSamazonka-emr" 'False) (C1 ('MetaCons "ScalingRule'" 'PrefixI 'True) ((S1 ('MetaSel ('Just "description") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :: S1 ('MetaSel ('Just "name") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Text)) :: (S1 ('MetaSel ('Just "action") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 ScalingAction) :*: S1 ('MetaSel ('Just "trigger") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 ScalingTrigger))))

newScalingRule Source #

Arguments

:: Text	`$sel:name:ScalingRule'`
-> ScalingAction	`$sel:action:ScalingRule'`
-> ScalingTrigger	`$sel:trigger:ScalingRule'`
-> ScalingRule

Create a value of ScalingRule with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:description:ScalingRule', scalingRule_description - A friendly, more verbose description of the automatic scaling rule.

$sel:name:ScalingRule', scalingRule_name - The name used to identify an automatic scaling rule. Rule names must be unique within a scaling policy.

$sel:action:ScalingRule', scalingRule_action - The conditions that trigger an automatic scaling activity.

$sel:trigger:ScalingRule', scalingRule_trigger - The CloudWatch alarm definition that determines when automatic scaling activity is triggered.

scalingRule_description :: Lens' ScalingRule (Maybe Text) Source #

A friendly, more verbose description of the automatic scaling rule.

scalingRule_name :: Lens' ScalingRule Text Source #

The name used to identify an automatic scaling rule. Rule names must be unique within a scaling policy.

scalingRule_action :: Lens' ScalingRule ScalingAction Source #

The conditions that trigger an automatic scaling activity.

scalingRule_trigger :: Lens' ScalingRule ScalingTrigger Source #

The CloudWatch alarm definition that determines when automatic scaling activity is triggered.