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awsmeter.go
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awsmeter.go
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package awsmeter
import (
"encoding/json"
"os"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/marketplacemetering"
"github.com/aws/aws-sdk-go/service/marketplacemetering/marketplacemeteringiface"
"github.com/pkg/errors"
"github.com/mattermost/mattermost-server/v5/mlog"
"github.com/mattermost/mattermost-server/v5/model"
"github.com/mattermost/mattermost-server/v5/store"
)
type AwsMeter struct {
store store.Store
service *AWSMeterService
config *model.Config
}
type AWSMeterService struct {
AwsDryRun bool
AwsProductCode string
AwsMeteringSvc marketplacemeteringiface.MarketplaceMeteringAPI
}
type AWSMeterReport struct {
Dimension string `json:"dimension"`
Value int64 `json:"value"`
Timestamp time.Time `json:"timestamp"`
}
func (o *AWSMeterReport) ToJSON() string {
b, _ := json.Marshal(o)
return string(b)
}
func New(store store.Store, config *model.Config) *AwsMeter {
svc := &AWSMeterService{
AwsDryRun: false,
AwsProductCode: "12345", //TODO
}
service, err := newAWSMarketplaceMeteringService()
if err != nil {
mlog.Debug("Could not create AWS metering service", mlog.String("error", err.Error()))
return nil
}
svc.AwsMeteringSvc = service
return &AwsMeter{
store: store,
service: svc,
config: config,
}
}
func newAWSMarketplaceMeteringService() (*marketplacemetering.MarketplaceMetering, error) {
region := os.Getenv("AWS_REGION")
s, err := session.NewSession(&aws.Config{Region: ®ion})
if err != nil {
return nil, err
}
creds := credentials.NewChainCredentials(
[]credentials.Provider{
&ec2rolecreds.EC2RoleProvider{
Client: ec2metadata.New(s),
},
})
_, err = creds.Get()
if err != nil {
return nil, errors.Wrap(err, "cannot obtain credentials")
}
return marketplacemetering.New(session.Must(session.NewSession(&aws.Config{
Credentials: creds,
}))), nil
}
// a report entry is for all metrics
func (awsm *AwsMeter) GetUserCategoryUsage(dimensions []string, startTime time.Time, endTime time.Time) []*AWSMeterReport {
reports := make([]*AWSMeterReport, 0)
for _, dimension := range dimensions {
var userCount int64
var err error
switch dimension {
case model.AWS_METERING_DIMENSION_USAGE_HRS:
userCount, err = awsm.store.User().AnalyticsActiveCountForPeriod(model.GetMillisForTime(startTime), model.GetMillisForTime(endTime), model.UserCountOptions{})
if err != nil {
mlog.Warn("Failed to obtain usage data", mlog.String("dimension", dimension), mlog.String("start", startTime.String()), mlog.Int64("count", userCount), mlog.Err(err))
continue
}
default:
mlog.Debug("Dimension does not exist!", mlog.String("dimension", dimension))
continue
}
report := &AWSMeterReport{
Dimension: dimension,
Value: userCount,
Timestamp: startTime,
}
reports = append(reports, report)
}
return reports
}
func (awsm *AwsMeter) ReportUserCategoryUsage(reports []*AWSMeterReport) error {
for _, report := range reports {
err := sendReportToMeteringService(awsm.service, report)
if err != nil {
return err
}
}
return nil
}
func sendReportToMeteringService(ams *AWSMeterService, report *AWSMeterReport) error {
params := &marketplacemetering.MeterUsageInput{
DryRun: aws.Bool(ams.AwsDryRun),
ProductCode: aws.String(ams.AwsProductCode),
UsageDimension: aws.String(report.Dimension),
UsageQuantity: aws.Int64(report.Value),
Timestamp: aws.Time(report.Timestamp),
}
resp, err := ams.AwsMeteringSvc.MeterUsage(params)
if err != nil {
return errors.Wrap(err, "Invalid metering service id.")
}
if resp.MeteringRecordId == nil {
return errors.Wrap(err, "Invalid metering service id.")
}
mlog.Debug("Sent record to AWS metering service", mlog.String("dimension", report.Dimension), mlog.Int64("value", report.Value), mlog.String("timestamp", report.Timestamp.String()))
return nil
}