// Code generated by smithy-go-codegen DO NOT EDIT.

package autoscaling

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/service/autoscaling/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Creates or updates a scaling policy for an Auto Scaling group. Scaling policies
// are used to scale an Auto Scaling group based on configurable metrics. If no
// policies are defined, the dynamic scaling and predictive scaling features are
// not used.
//
// For more information about using dynamic scaling, see [Target tracking scaling policies] and [Step and simple scaling policies] in the Amazon EC2
// Auto Scaling User Guide.
//
// For more information about using predictive scaling, see [Predictive scaling for Amazon EC2 Auto Scaling] in the Amazon EC2
// Auto Scaling User Guide.
//
// You can view the scaling policies for an Auto Scaling group using the DescribePolicies API
// call. If you are no longer using a scaling policy, you can delete it by calling
// the DeletePolicyAPI.
//
// [Step and simple scaling policies]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html
// [Target tracking scaling policies]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-target-tracking.html
// [Predictive scaling for Amazon EC2 Auto Scaling]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-predictive-scaling.html
func (c *Client) PutScalingPolicy(ctx context.Context, params *PutScalingPolicyInput, optFns ...func(*Options)) (*PutScalingPolicyOutput, error) {
	if params == nil {
		params = &PutScalingPolicyInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "PutScalingPolicy", params, optFns, c.addOperationPutScalingPolicyMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*PutScalingPolicyOutput)
	out.ResultMetadata = metadata
	return out, nil
}

type PutScalingPolicyInput struct {

	// The name of the Auto Scaling group.
	//
	// This member is required.
	AutoScalingGroupName *string

	// The name of the policy.
	//
	// This member is required.
	PolicyName *string

	// Specifies how the scaling adjustment is interpreted (for example, an absolute
	// number or a percentage). The valid values are ChangeInCapacity , ExactCapacity ,
	// and PercentChangeInCapacity .
	//
	// Required if the policy type is StepScaling or SimpleScaling . For more
	// information, see [Scaling adjustment types]in the Amazon EC2 Auto Scaling User Guide.
	//
	// [Scaling adjustment types]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html#as-scaling-adjustment
	AdjustmentType *string

	// A cooldown period, in seconds, that applies to a specific simple scaling
	// policy. When a cooldown period is specified here, it overrides the default
	// cooldown.
	//
	// Valid only if the policy type is SimpleScaling . For more information, see [Scaling cooldowns for Amazon EC2 Auto Scaling] in
	// the Amazon EC2 Auto Scaling User Guide.
	//
	// Default: None
	//
	// [Scaling cooldowns for Amazon EC2 Auto Scaling]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-cooldowns.html
	Cooldown *int32

	// Indicates whether the scaling policy is enabled or disabled. The default is
	// enabled. For more information, see [Disable a scaling policy for an Auto Scaling group]in the Amazon EC2 Auto Scaling User Guide.
	//
	// [Disable a scaling policy for an Auto Scaling group]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-enable-disable-scaling-policy.html
	Enabled *bool

	//  Not needed if the default instance warmup is defined for the group.
	//
	// The estimated time, in seconds, until a newly launched instance can contribute
	// to the CloudWatch metrics. This warm-up period applies to instances launched due
	// to a specific target tracking or step scaling policy. When a warm-up period is
	// specified here, it overrides the default instance warmup.
	//
	// Valid only if the policy type is TargetTrackingScaling or StepScaling .
	//
	// The default is to use the value for the default instance warmup defined for the
	// group. If default instance warmup is null, then EstimatedInstanceWarmup falls
	// back to the value of default cooldown.
	EstimatedInstanceWarmup *int32

	// The aggregation type for the CloudWatch metrics. The valid values are Minimum ,
	// Maximum , and Average . If the aggregation type is null, the value is treated as
	// Average .
	//
	// Valid only if the policy type is StepScaling .
	MetricAggregationType *string

	// The minimum value to scale by when the adjustment type is
	// PercentChangeInCapacity . For example, suppose that you create a step scaling
	// policy to scale out an Auto Scaling group by 25 percent and you specify a
	// MinAdjustmentMagnitude of 2. If the group has 4 instances and the scaling policy
	// is performed, 25 percent of 4 is 1. However, because you specified a
	// MinAdjustmentMagnitude of 2, Amazon EC2 Auto Scaling scales out the group by 2
	// instances.
	//
	// Valid only if the policy type is StepScaling or SimpleScaling . For more
	// information, see [Scaling adjustment types]in the Amazon EC2 Auto Scaling User Guide.
	//
	// Some Auto Scaling groups use instance weights. In this case, set the
	// MinAdjustmentMagnitude to a value that is at least as large as your largest
	// instance weight.
	//
	// [Scaling adjustment types]: https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html#as-scaling-adjustment
	MinAdjustmentMagnitude *int32

	// Available for backward compatibility. Use MinAdjustmentMagnitude instead.
	//
	// Deprecated: This member has been deprecated.
	MinAdjustmentStep *int32

	// One of the following policy types:
	//
	//   - TargetTrackingScaling
	//
	//   - StepScaling
	//
	//   - SimpleScaling (default)
	//
	//   - PredictiveScaling
	PolicyType *string

	// A predictive scaling policy. Provides support for predefined and custom metrics.
	//
	// Predefined metrics include CPU utilization, network in/out, and the Application
	// Load Balancer request count.
	//
	// For more information, see [PredictiveScalingConfiguration] in the Amazon EC2 Auto Scaling API Reference.
	//
	// Required if the policy type is PredictiveScaling .
	//
	// [PredictiveScalingConfiguration]: https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_PredictiveScalingConfiguration.html
	PredictiveScalingConfiguration *types.PredictiveScalingConfiguration

	// The amount by which to scale, based on the specified adjustment type. A
	// positive value adds to the current capacity while a negative number removes from
	// the current capacity. For exact capacity, you must specify a non-negative value.
	//
	// Required if the policy type is SimpleScaling . (Not used with any other policy
	// type.)
	ScalingAdjustment *int32

	// A set of adjustments that enable you to scale based on the size of the alarm
	// breach.
	//
	// Required if the policy type is StepScaling . (Not used with any other policy
	// type.)
	StepAdjustments []types.StepAdjustment

	// A target tracking scaling policy. Provides support for predefined or custom
	// metrics.
	//
	// The following predefined metrics are available:
	//
	//   - ASGAverageCPUUtilization
	//
	//   - ASGAverageNetworkIn
	//
	//   - ASGAverageNetworkOut
	//
	//   - ALBRequestCountPerTarget
	//
	// If you specify ALBRequestCountPerTarget for the metric, you must specify the
	// ResourceLabel property with the PredefinedMetricSpecification .
	//
	// For more information, see [TargetTrackingConfiguration] in the Amazon EC2 Auto Scaling API Reference.
	//
	// Required if the policy type is TargetTrackingScaling .
	//
	// [TargetTrackingConfiguration]: https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_TargetTrackingConfiguration.html
	TargetTrackingConfiguration *types.TargetTrackingConfiguration

	noSmithyDocumentSerde
}

// Contains the output of PutScalingPolicy.
type PutScalingPolicyOutput struct {

	// The CloudWatch alarms created for the target tracking scaling policy.
	Alarms []types.Alarm

	// The Amazon Resource Name (ARN) of the policy.
	PolicyARN *string

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationPutScalingPolicyMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsquery_serializeOpPutScalingPolicy{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpPutScalingPolicy{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "PutScalingPolicy"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addClientUserAgent(stack, options); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addTimeOffsetBuild(stack, c); err != nil {
		return err
	}
	if err = addUserAgentRetryMode(stack, options); err != nil {
		return err
	}
	if err = addOpPutScalingPolicyValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opPutScalingPolicy(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addRecursionDetection(stack); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	return nil
}

func newServiceMetadataMiddleware_opPutScalingPolicy(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "PutScalingPolicy",
	}
}