Package software.amazon.awscdk.services.events

Interface CfnRule.PlacementConstraintProperty

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Implementing Classes:

CfnRule.PlacementConstraintProperty.Jsii$Proxy

Enclosing class:

CfnRule

@Stability(Stable)
public static interface CfnRule.PlacementConstraintProperty
extends software.amazon.jsii.JsiiSerializable

An object representing a constraint on task placement.

To learn more, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide.

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.events.*;
 PlacementConstraintProperty placementConstraintProperty = PlacementConstraintProperty.builder()
         .expression("expression")
         .type("type")
         .build();
 

See Also:

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

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final class	CfnRule.PlacementConstraintProperty.Builder	A builder for CfnRule.PlacementConstraintProperty
static final class	CfnRule.PlacementConstraintProperty.Jsii$Proxy	An implementation for CfnRule.PlacementConstraintProperty

Method Summary

Modifier and Type	Method	Description
static CfnRule.PlacementConstraintProperty.Builder	builder()
default String	getExpression()	A cluster query language expression to apply to the constraint.
default String	getType()	The type of constraint.

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Details

getExpression

@Stability(Stable)
@Nullable
default String getExpression()

A cluster query language expression to apply to the constraint.

You cannot specify an expression if the constraint type is distinctInstance . To learn more, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide.

See Also:

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

getType

@Stability(Stable)
@Nullable
default String getType()

The type of constraint.

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

See Also:

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

builder

@Stability(Stable)
static CfnRule.PlacementConstraintProperty.Builder builder()

Returns:

a CfnRule.PlacementConstraintProperty.Builder of CfnRule.PlacementConstraintProperty