Class: AWSCDK::ECS::CfnService::PlacementConstraintProperty

Inherits:

Jsii::Struct

• Object
• Jsii::Struct
• AWSCDK::ECS::CfnService::PlacementConstraintProperty

Defined in:

ecs/cfn_service.rb

Overview

An object representing a constraint on task placement.

For more information, see Task placement constraints in the Amazon Elastic Container Service Developer Guide .

If you're using the Fargate launch type, task placement constraints aren't supported.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-service-placementconstraint.html

Instance Attribute Summary

• #expression ⇒ String^? readonly

  A cluster query language expression to apply to the constraint.

• #type ⇒ String readonly

  The type of constraint.

Class Method Summary

• .jsii_properties ⇒ Object

Instance Method Summary

• #initialize(type:, expression: nil) ⇒ PlacementConstraintProperty constructor

  A new instance of PlacementConstraintProperty.

• #to_jsii ⇒ Object

Constructor Details

#initialize(type:, expression: nil) ⇒ PlacementConstraintProperty

Returns a new instance of PlacementConstraintProperty.

Parameters:

• type (String) —

  The type of constraint.

• expression (String, nil) (defaults to: nil) —

  A cluster query language expression to apply to the constraint.

# File 'ecs/cfn_service.rb', line 2253

def initialize(type:, expression: nil)
  @type = type
  Jsii::Type.check_type(@type, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "type")
  @expression = expression
  Jsii::Type.check_type(@expression, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "expression") unless @expression.nil?
end

Instance Attribute Details

#expression ⇒ String^? (readonly)

A cluster query language expression to apply to the constraint.

The expression can have a maximum length of 2000 characters. You can't specify an expression if the constraint type is distinct_instance . For more information, see Cluster query language in the Amazon Elastic Container Service Developer Guide .

Returns:

• (String, nil)

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-service-placementconstraint.html#cfn-ecs-service-placementconstraint-expression

# File 'ecs/cfn_service.rb', line 2273

def expression
  @expression
end

#type ⇒ String (readonly)

The type of constraint.

Use distinct_instance to ensure that each task in a particular group is running on a different container instance. Use member_of to restrict the selection to a group of valid candidates.

Returns:

• (String)

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecs-service-placementconstraint.html#cfn-ecs-service-placementconstraint-type

# File 'ecs/cfn_service.rb', line 2266

def type
  @type
end

Class Method Details

.jsii_properties ⇒ Object

# File 'ecs/cfn_service.rb', line 2275

def self.jsii_properties
  {
    :type => "type",
    :expression => "expression",
  }
end

Instance Method Details

#to_jsii ⇒ Object

# File 'ecs/cfn_service.rb', line 2282

def to_jsii
  result = {}
  result.merge!({
    "type" => @type,
    "expression" => @expression,
  })
  result.compact
end