Class AutoScalingPolicyDescription

java.lang.Object
software.amazon.awssdk.services.emr.model.AutoScalingPolicyDescription
All Implemented Interfaces:
Serializable, SdkPojo, ToCopyableBuilder<AutoScalingPolicyDescription.Builder,AutoScalingPolicyDescription>
@Generated("software.amazon.awssdk:codegen") public final class AutoScalingPolicyDescription extends Object implements SdkPojo, Serializable, ToCopyableBuilder<AutoScalingPolicyDescription.Builder,AutoScalingPolicyDescription>

An automatic scaling policy for a core instance group or task instance group in an Amazon EMR cluster. The automatic scaling policy defines how an instance group dynamically adds and terminates Amazon EC2 instances in response to the value of a CloudWatch metric. See PutAutoScalingPolicy.

See Also:

  • Method Details

    • status

      public final AutoScalingPolicyStatus status()

      The status of an automatic scaling policy.

      Returns:
      The status of an automatic scaling policy.

    • constraints

      public final ScalingConstraints constraints()

      The upper and lower Amazon EC2 instance limits for an automatic scaling policy. Automatic scaling activity will not cause an instance group to grow above or below these limits.

      Returns:
      The upper and lower Amazon EC2 instance limits for an automatic scaling policy. Automatic scaling activity will not cause an instance group to grow above or below these limits.

    • hasRules

      public final boolean hasRules()
      For responses, this returns true if the service returned a value for the Rules property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • rules

      public final List<ScalingRule> rules()

      The scale-in and scale-out rules that comprise the automatic scaling policy.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasRules() method.

      Returns:
      The scale-in and scale-out rules that comprise the automatic scaling policy.

    • toBuilder

      public AutoScalingPolicyDescription.Builder toBuilder()
      Description copied from interface: ToCopyableBuilder
      Take this object and create a builder that contains all of the current property values of this object.
      Specified by:
      toBuilder in interface ToCopyableBuilder<AutoScalingPolicyDescription.Builder,AutoScalingPolicyDescription>
      Returns:
      a builder for type T

    • builder

      public static AutoScalingPolicyDescription.Builder builder()

    • serializableBuilderClass

      public static Class<? extends AutoScalingPolicyDescription.Builder> serializableBuilderClass()

    • hashCode

      public final int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public final boolean equals(Object obj)
      Overrides:
      equals in class Object

    • equalsBySdkFields

      public final boolean equalsBySdkFields(Object obj)
      Description copied from interface: SdkPojo
      Indicates whether some other object is "equal to" this one by SDK fields. An SDK field is a modeled, non-inherited field in an SdkPojo class, and is generated based on a service model.

      If an SdkPojo class does not have any inherited fields, equalsBySdkFields and equals are essentially the same.

      Specified by:
      equalsBySdkFields in interface SdkPojo
      Parameters:
      obj - the object to be compared with
      Returns:
      true if the other object equals to this object by sdk fields, false otherwise.

    • toString

      public final String toString()
      Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be redacted from this string using a placeholder value.
      Overrides:
      toString in class Object

    • getValueForField

      public final <T> Optional<T> getValueForField(String fieldName, Class<T> clazz)

    • sdkFields

      public final List<SdkField<?>> sdkFields()
      Specified by:
      sdkFields in interface SdkPojo
      Returns:
      List of SdkField in this POJO. May be empty list but should never be null.

    • sdkFieldNameToField

      public final Map<String,SdkField<?>> sdkFieldNameToField()
      Specified by:
      sdkFieldNameToField in interface SdkPojo
      Returns:
      The mapping between the field name and its corresponding field.