Package software.amazon.awscdk.services.ecs

Interface CfnService.PlacementConstraintProperty

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Implementing Classes:

CfnService.PlacementConstraintProperty.Jsii$Proxy

Enclosing class:

CfnService

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

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.

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.ecs.*;
 PlacementConstraintProperty placementConstraintProperty = PlacementConstraintProperty.builder()
         .type("type")
         // the properties below are optional
         .expression("expression")
         .build();
 

See Also:

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

Nested Class Summary

Nested Classes

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

Method Summary

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

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Details

getType

@Stability(Stable)
@NotNull
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-ecs-service-placementconstraint.html#cfn-ecs-service-placementconstraint-type

getExpression

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

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 distinctInstance . For more information, see Cluster query language in the Amazon Elastic Container Service Developer Guide .

See Also:

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

builder

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

Returns:

a CfnService.PlacementConstraintProperty.Builder of CfnService.PlacementConstraintProperty