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store: fail faster if not running in EC2 #415

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store: fail faster if not running in EC2 #415

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1 change: 1 addition & 0 deletions go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ go 1.19
require (
github.com/alessio/shellescape v1.4.1
github.com/aws/aws-sdk-go v1.44.312
github.com/kevinburke/isec2 v0.1.0
github.com/magiconair/properties v1.8.7
github.com/segmentio/analytics-go/v3 v3.2.1
github.com/spf13/cobra v1.7.0
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2 changes: 2 additions & 0 deletions go.sum
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Expand Up @@ -17,6 +17,8 @@ github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9Y
github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
github.com/kevinburke/isec2 v0.1.0 h1:BhEAlWqZR6lNL7o/C3W46mhIBpJHimYNYQtXtvwXk6o=
github.com/kevinburke/isec2 v0.1.0/go.mod h1:axcGKXslLWfmqxnN+O0NqA8oGKqkQ37MQArV2brBVpw=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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16 changes: 12 additions & 4 deletions store/shared.go
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@@ -1,12 +1,15 @@
package store

import (
"context"
"os"
"time"

"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/aws/aws-sdk-go/aws/endpoints"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/kevinburke/isec2"
)

const (
Expand Down Expand Up @@ -47,10 +50,15 @@ func getSession(numRetries int) (*session.Session, *string, error) {

// If region is still not set, attempt to determine it via ec2 metadata API
if aws.StringValue(retSession.Config.Region) == "" {
session := session.New()
ec2metadataSvc := ec2metadata.New(session)
if regionOverride, err := ec2metadataSvc.Region(); err == nil {
region = aws.String(regionOverride)
ec2ctx, ec2cancel := context.WithTimeout(context.Background(), 20*time.Millisecond)
runningEC2, ec2err := isec2.IsEC2(ec2ctx)
ec2cancel()
if ec2err == nil && runningEC2 {
session := session.New()
ec2metadataSvc := ec2metadata.New(session)
if regionOverride, err := ec2metadataSvc.Region(); err == nil {
region = aws.String(regionOverride)
}
}
}

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