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

package lightsail

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

// Returns information about health metrics for your Lightsail load balancer.
//
// Metrics report the utilization of your resources, and the error counts
// generated by them. Monitor and collect metric data regularly to maintain the
// reliability, availability, and performance of your resources.
func (c *Client) GetLoadBalancerMetricData(ctx context.Context, params *GetLoadBalancerMetricDataInput, optFns ...func(*Options)) (*GetLoadBalancerMetricDataOutput, error) {
	if params == nil {
		params = &GetLoadBalancerMetricDataInput{}
	}

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

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

type GetLoadBalancerMetricDataInput struct {

	// The end time of the period.
	//
	// This member is required.
	EndTime *time.Time

	// The name of the load balancer.
	//
	// This member is required.
	LoadBalancerName *string

	// The metric for which you want to return information.
	//
	// Valid load balancer metric names are listed below, along with the most useful
	// statistics to include in your request, and the published unit value.
	//
	//   - ClientTLSNegotiationErrorCount - The number of TLS connections initiated by
	//   the client that did not establish a session with the load balancer due to a TLS
	//   error generated by the load balancer. Possible causes include a mismatch of
	//   ciphers or protocols.
	//
	// Statistics : The most useful statistic is Sum .
	//
	// Unit : The published unit is Count .
	//
	//   - HealthyHostCount - The number of target instances that are considered
	//   healthy.
	//
	// Statistics : The most useful statistic are Average , Minimum , and Maximum .
	//
	// Unit : The published unit is Count .
	//
	//   - HTTPCode_Instance_2XX_Count - The number of HTTP 2XX response codes
	//   generated by the target instances. This does not include any response codes
	//   generated by the load balancer.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - HTTPCode_Instance_3XX_Count - The number of HTTP 3XX response codes
	//   generated by the target instances. This does not include any response codes
	//   generated by the load balancer.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - HTTPCode_Instance_4XX_Count - The number of HTTP 4XX response codes
	//   generated by the target instances. This does not include any response codes
	//   generated by the load balancer.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - HTTPCode_Instance_5XX_Count - The number of HTTP 5XX response codes
	//   generated by the target instances. This does not include any response codes
	//   generated by the load balancer.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - HTTPCode_LB_4XX_Count - The number of HTTP 4XX client error codes that
	//   originated from the load balancer. Client errors are generated when requests are
	//   malformed or incomplete. These requests were not received by the target
	//   instance. This count does not include response codes generated by the target
	//   instances.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - HTTPCode_LB_5XX_Count - The number of HTTP 5XX server error codes that
	//   originated from the load balancer. This does not include any response codes
	//   generated by the target instance. This metric is reported if there are no
	//   healthy instances attached to the load balancer, or if the request rate exceeds
	//   the capacity of the instances (spillover) or the load balancer.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - InstanceResponseTime - The time elapsed, in seconds, after the request
	//   leaves the load balancer until a response from the target instance is received.
	//
	// Statistics : The most useful statistic is Average .
	//
	// Unit : The published unit is Seconds .
	//
	//   - RejectedConnectionCount - The number of connections that were rejected
	//   because the load balancer had reached its maximum number of connections.
	//
	// Statistics : The most useful statistic is Sum .
	//
	// Unit : The published unit is Count .
	//
	//   - RequestCount - The number of requests processed over IPv4. This count
	//   includes only the requests with a response generated by a target instance of the
	//   load balancer.
	//
	// Statistics : The most useful statistic is Sum . Note that Minimum , Maximum ,
	//   and Average all return 1 .
	//
	// Unit : The published unit is Count .
	//
	//   - UnhealthyHostCount - The number of target instances that are considered
	//   unhealthy.
	//
	// Statistics : The most useful statistic are Average , Minimum , and Maximum .
	//
	// Unit : The published unit is Count .
	//
	// This member is required.
	MetricName types.LoadBalancerMetricName

	// The granularity, in seconds, of the returned data points.
	//
	// This member is required.
	Period *int32

	// The start time of the period.
	//
	// This member is required.
	StartTime *time.Time

	// The statistic for the metric.
	//
	// The following statistics are available:
	//
	//   - Minimum - The lowest value observed during the specified period. Use this
	//   value to determine low volumes of activity for your application.
	//
	//   - Maximum - The highest value observed during the specified period. Use this
	//   value to determine high volumes of activity for your application.
	//
	//   - Sum - All values submitted for the matching metric added together. You can
	//   use this statistic to determine the total volume of a metric.
	//
	//   - Average - The value of Sum / SampleCount during the specified period. By
	//   comparing this statistic with the Minimum and Maximum values, you can determine
	//   the full scope of a metric and how close the average use is to the Minimum and
	//   Maximum values. This comparison helps you to know when to increase or decrease
	//   your resources.
	//
	//   - SampleCount - The count, or number, of data points used for the statistical
	//   calculation.
	//
	// This member is required.
	Statistics []types.MetricStatistic

	// The unit for the metric data request. Valid units depend on the metric data
	// being requested. For the valid units with each available metric, see the
	// metricName parameter.
	//
	// This member is required.
	Unit types.MetricUnit

	noSmithyDocumentSerde
}

type GetLoadBalancerMetricDataOutput struct {

	// An array of objects that describe the metric data returned.
	MetricData []types.MetricDatapoint

	// The name of the metric returned.
	MetricName types.LoadBalancerMetricName

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetLoadBalancerMetricDataMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpGetLoadBalancerMetricData{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpGetLoadBalancerMetricData{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "GetLoadBalancerMetricData"); 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 = addOpGetLoadBalancerMetricDataValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetLoadBalancerMetricData(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_opGetLoadBalancerMetricData(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "GetLoadBalancerMetricData",
	}
}