feat: Fix Cost Calculation for AWS CloudFront Distributions & Functions #1131
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,161 @@ | ||
| package cloudfront | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| log "github.com/sirupsen/logrus" | ||
|
|
||
| "github.com/aws/aws-sdk-go-v2/aws" | ||
| "github.com/aws/aws-sdk-go-v2/service/cloudfront" | ||
| "github.com/aws/aws-sdk-go-v2/service/cloudwatch" | ||
| "github.com/aws/aws-sdk-go-v2/service/cloudwatch/types" | ||
| "github.com/aws/aws-sdk-go-v2/service/pricing" | ||
| pricingTypes "github.com/aws/aws-sdk-go-v2/service/pricing/types" | ||
| . "github.com/tailwarden/komiser/models" | ||
| . "github.com/tailwarden/komiser/providers" | ||
| awsUtils "github.com/tailwarden/komiser/providers/aws/utils" | ||
| "github.com/tailwarden/komiser/utils" | ||
| ) | ||
|
|
||
| const ( | ||
| perOneMillonRequest = 1000000 | ||
| ) | ||
| func LambdaEdgeFunctions(ctx context.Context, client ProviderClient) ([]Resource, error) { | ||
| resources := make([]Resource, 0) | ||
| var config cloudfront.ListFunctionsInput | ||
| cloudfrontClient := cloudfront.NewFromConfig(*client.AWSClient) | ||
| tempRegion := client.AWSClient.Region | ||
| client.AWSClient.Region = "us-east-1" | ||
| cloudwatchClient := cloudwatch.NewFromConfig(*client.AWSClient) | ||
| pricingClient := pricing.NewFromConfig(*client.AWSClient) | ||
| client.AWSClient.Region = tempRegion | ||
|
|
||
| pricingOutput, err := pricingClient.GetProducts(ctx, &pricing.GetProductsInput{ | ||
| ServiceCode: aws.String("AmazonCloudFront"), | ||
| Filters: []pricingTypes.Filter{ | ||
| { | ||
| Field: aws.String("regionCode"), | ||
| Value: aws.String(client.AWSClient.Region), | ||
| Type: pricingTypes.FilterTypeTermMatch, | ||
| }, | ||
| }, | ||
| }) | ||
| if err != nil { | ||
| log.Errorf("ERROR: Couldn't fetch pricing info for AWS CloudFront: %v", err) | ||
| } | ||
|
|
||
| priceMap, err := awsUtils.GetPriceMap(pricingOutput, "group") | ||
| if err != nil { | ||
| log.Errorf("ERROR: Failed to calculate cost per month: %v", err) | ||
| } | ||
|
|
||
| for { | ||
| output, err := cloudfrontClient.ListFunctions(ctx, &config) | ||
| if err != nil { | ||
| return resources, err | ||
| } | ||
|
|
||
| for _, function := range output.FunctionList.Items { | ||
| metricsLambdaEdgeDurationOutput, err := cloudwatchClient.GetMetricStatistics(ctx, &cloudwatch.GetMetricStatisticsInput{ | ||
| StartTime: aws.Time(utils.BeginningOfMonth(time.Now())), | ||
| EndTime: aws.Time(time.Now()), | ||
| MetricName: aws.String("Duration"), | ||
| Namespace: aws.String("AWS/CloudFront"), | ||
| Dimensions: []types.Dimension{ | ||
| { | ||
| Name: aws.String("FunctionName"), | ||
| Value: function.Name, | ||
| }, | ||
| }, | ||
| Period: aws.Int32(86400), | ||
| Statistics: []types.Statistic{ | ||
| types.StatisticAverage, | ||
| }, | ||
| }) | ||
|
|
||
| if err != nil { | ||
| log.Warnf("Couldn't fetch Lambda@Edge Duration metric for %s", *function.Name) | ||
| } | ||
|
|
||
| lambdaEdgeDuration := 0.0 | ||
| if metricsLambdaEdgeDurationOutput != nil && len(metricsLambdaEdgeDurationOutput.Datapoints) > 0 { | ||
| lambdaEdgeDuration = *metricsLambdaEdgeDurationOutput.Datapoints[0].Average | ||
| } | ||
|
|
||
| metricsLambdaEdgeRequestsOutput, err := cloudwatchClient.GetMetricStatistics(ctx, &cloudwatch.GetMetricStatisticsInput{ | ||
| StartTime: aws.Time(utils.BeginningOfMonth(time.Now())), | ||
| EndTime: aws.Time(time.Now()), | ||
| MetricName: aws.String("Requests"), | ||
| Namespace: aws.String("AWS/CloudFront"), | ||
| Dimensions: []types.Dimension{ | ||
| { | ||
| Name: aws.String("FunctionName"), | ||
| Value: function.Name, | ||
| }, | ||
| }, | ||
| Period: aws.Int32(86400), | ||
| Statistics: []types.Statistic{ | ||
| types.StatisticSum, | ||
| }, | ||
| }) | ||
|
|
||
| if err != nil { | ||
| log.Warnf("Couldn't fetch Lambda@Edge Requests metric for %s", *function.Name) | ||
| } | ||
|
|
||
| lambdaEdgeRequests := 0.0 | ||
| if metricsLambdaEdgeRequestsOutput != nil && len(metricsLambdaEdgeRequestsOutput.Datapoints) > 0 { | ||
| lambdaEdgeRequests = *metricsLambdaEdgeRequestsOutput.Datapoints[0].Sum | ||
| } | ||
|
|
||
| lambdaEdgeDurationCost := awsUtils.GetCost(priceMap["AWS-Lambda-Edge-Duration"], lambdaEdgeDuration) | ||
|
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| lambdaEdgeRequestsCost := awsUtils.GetCost(priceMap["AWS-Lambda-Edge-Requests"], lambdaEdgeRequests/perOneMillonRequest) | ||
|
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| monthlyCost := lambdaEdgeDurationCost + lambdaEdgeRequestsCost | ||
|
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| outputTags, err := cloudfrontClient.ListTagsForResource(ctx, &cloudfront.ListTagsForResourceInput{ | ||
| Resource: function.FunctionMetadata.FunctionARN, | ||
| }) | ||
|
|
||
| tags := make([]Tag, 0) | ||
|
|
||
| if err == nil { | ||
| for _, tag := range outputTags.Tags.Items { | ||
| tags = append(tags, Tag{ | ||
| Key: *tag.Key, | ||
| Value: *tag.Value, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| resources = append(resources, Resource{ | ||
| Provider: "AWS", | ||
| Account: client.Name, | ||
| Service: "CloudFront", | ||
| ResourceId: *function.FunctionMetadata.FunctionARN, | ||
| Region: client.AWSClient.Region, | ||
| Name: *function.Name, | ||
| Cost: monthlyCost, | ||
| Tags: tags, | ||
| FetchedAt: time.Now(), | ||
| Link: fmt.Sprintf("https://%s.console.aws.amazon.com/cloudfront/v3/home?region=%s#/distributions/%s", client.AWSClient.Region, client.AWSClient.Region, *function.Name), | ||
| }) | ||
| } | ||
|
|
||
| if aws.ToString(output.FunctionList.NextMarker) == "" { | ||
| break | ||
| } | ||
| config.Marker = output.FunctionList.NextMarker | ||
| } | ||
| log.WithFields(log.Fields{ | ||
| "provider": "AWS", | ||
| "account": client.Name, | ||
| "region": client.AWSClient.Region, | ||
| "service": "CloudFront", | ||
| "resources": len(resources), | ||
| }).Info("Fetched resources") | ||
| return resources, nil | ||
| } |
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It would be better to use the
freeTierUploadvariable so anyone can tell by the name what this calculation should do You might also create a variable for1024as well.