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cloudwatch.go
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cloudwatch.go
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package cloudwatch
import (
"context"
"fmt"
"time"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/cloudwatch"
"github.com/aws/aws-sdk-go-v2/service/cloudwatch/types"
log "github.com/sirupsen/logrus"
"github.com/argoproj/argo-rollouts/pkg/apis/rollouts/v1alpha1"
"github.com/argoproj/argo-rollouts/utils/evaluate"
metricutil "github.com/argoproj/argo-rollouts/utils/metric"
timeutil "github.com/argoproj/argo-rollouts/utils/time"
)
const (
//ProviderType indicates the provider is cloudwatch
ProviderType = "CloudWatch"
)
type CloudWatchClientAPI interface {
Query(interval time.Duration, query []types.MetricDataQuery) (*cloudwatch.GetMetricDataOutput, error)
}
type CloudWatchClient struct {
client *cloudwatch.Client
}
func (c *CloudWatchClient) Query(interval time.Duration, query []types.MetricDataQuery) (*cloudwatch.GetMetricDataOutput, error) {
endTime := timeutil.Now()
startTime := endTime.Add(-interval)
return c.client.GetMetricData(context.TODO(), &cloudwatch.GetMetricDataInput{
StartTime: &startTime,
EndTime: &endTime,
MetricDataQueries: query,
})
}
// Provider contains all the required components to run a CloudWatch query
// Implements the Provider Interface
type Provider struct {
api CloudWatchClientAPI
logCtx log.Entry
}
func (p *Provider) Type() string {
return ProviderType
}
// GetMetadata returns any additional metadata which needs to be stored & displayed as part of the metrics result.
func (p *Provider) GetMetadata(metric v1alpha1.Metric) map[string]string {
return nil
}
// Run queries with CloudWatch provider for the metric
func (p *Provider) Run(run *v1alpha1.AnalysisRun, metric v1alpha1.Metric) v1alpha1.Measurement {
startTime := timeutil.MetaNow()
measurement := v1alpha1.Measurement{
StartedAt: &startTime,
Metadata: map[string]string{},
}
interval := time.Minute * 5
if metric.Provider.CloudWatch.Interval != "" {
d, err := metric.Provider.CloudWatch.Interval.Duration()
if err != nil {
return metricutil.MarkMeasurementError(measurement, err)
}
interval = d
}
query := convertType(metric.Provider.CloudWatch.MetricDataQueries)
result, err := p.api.Query(interval, query)
if err != nil {
return metricutil.MarkMeasurementError(measurement, err)
}
for _, message := range result.Messages {
p.logCtx.Warnf("CloudWatch returned the following messages: %+v", message)
}
if len(result.Messages) > 0 {
measurement.Metadata["messages"] = fmt.Sprintf("%+v", result.Messages)
}
value := [][]float64{}
for _, result := range result.MetricDataResults {
value = append(value, result.Values)
}
measurement.Value = fmt.Sprintf("%+v", value)
status, err := evaluate.EvaluateResult(result.MetricDataResults, metric, p.logCtx)
if err != nil {
return metricutil.MarkMeasurementError(measurement, err)
}
measurement.Phase = status
finishedTime := timeutil.MetaNow()
measurement.FinishedAt = &finishedTime
return measurement
}
func (p *Provider) Resume(run *v1alpha1.AnalysisRun, metric v1alpha1.Metric, measurement v1alpha1.Measurement) v1alpha1.Measurement {
return measurement
}
func (p *Provider) Terminate(run *v1alpha1.AnalysisRun, metric v1alpha1.Metric, measurement v1alpha1.Measurement) v1alpha1.Measurement {
return measurement
}
func (p *Provider) GarbageCollect(run *v1alpha1.AnalysisRun, metric v1alpha1.Metric, i int) error {
return nil
}
// NewCloudWatchProvider creates a new CloudWatch provider
func NewCloudWatchProvider(api CloudWatchClientAPI, logCtx log.Entry) *Provider {
return &Provider{
api: api,
logCtx: logCtx,
}
}
func NewCloudWatchAPIClient(metric v1alpha1.Metric, opts ...func(*cloudwatch.Options)) (CloudWatchClientAPI, error) {
cfg, err := config.LoadDefaultConfig(context.TODO())
if err != nil {
return nil, err
}
return &CloudWatchClient{
client: cloudwatch.NewFromConfig(cfg, opts...),
}, nil
}
func convertType(data []v1alpha1.CloudWatchMetricDataQuery) []types.MetricDataQuery {
result := make([]types.MetricDataQuery, len(data))
for i, v := range data {
var metricStat *types.MetricStat
if v.MetricStat != nil {
metricStatPeriod := int32(v.MetricStat.Period.IntValue())
metricStat = &types.MetricStat{
Metric: &types.Metric{
Dimensions: nil,
MetricName: &v.MetricStat.Metric.MetricName,
Namespace: v.MetricStat.Metric.Namespace,
},
Period: &metricStatPeriod,
Stat: &v.MetricStat.Stat,
Unit: types.StandardUnit(v.MetricStat.Unit),
}
if v.MetricStat.Metric.Dimensions != nil {
metricStat.Metric.Dimensions = make([]types.Dimension, len(v.MetricStat.Metric.Dimensions))
for j, d := range v.MetricStat.Metric.Dimensions {
name := d.Name
value := d.Value
metricStat.Metric.Dimensions[j] = types.Dimension{
Name: &name,
Value: &value,
}
}
}
}
var period *int32
if v.Period != nil {
p := int32(v.Period.IntValue())
period = &p
}
id := v.Id
result[i] = types.MetricDataQuery{
Id: &id,
Expression: v.Expression,
Label: v.Label,
MetricStat: metricStat,
Period: period,
ReturnData: v.ReturnData,
}
}
return result
}