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Add AWS_MIN_TTL to set expiry window #646

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merged 1 commit into from
Aug 30, 2020
Merged

Add AWS_MIN_TTL to set expiry window #646

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1 change: 1 addition & 0 deletions USAGE.md
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Original file line number Diff line number Diff line change
Expand Up @@ -127,6 +127,7 @@ To override session durations (used in `exec` and `login`):
* `AWS_CHAINED_SESSION_TOKEN_TTL`: Expiration time for the `GetSessionToken` credentials when chaining profiles. Defaults to 8h
* `AWS_ASSUME_ROLE_TTL`: Expiration time for the `AssumeRole` credentials. Defaults to 1h
* `AWS_FEDERATION_TOKEN_TTL`: Expiration time for the `GetFederationToken` credentials. Defaults to 1h
* `AWS_MIN_TTL`: The minimum expiration time allowed for a credential. Defaults to 5m

Note that the session durations above expect a unit after the number (e.g. 12h or 43200s).

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9 changes: 8 additions & 1 deletion vault/vault.go
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Expand Up @@ -4,6 +4,7 @@ import (
"errors"
"fmt"
"log"
"os"
"time"

"github.com/99designs/aws-vault/v6/prompt"
Expand All @@ -16,7 +17,13 @@ import (
"github.com/aws/aws-sdk-go/service/sts"
)

const defaultExpirationWindow = 5 * time.Minute
var defaultExpirationWindow = 5 * time.Minute

func init() {
if d, err := time.ParseDuration(os.Getenv("AWS_MIN_TTL")); err == nil {
defaultExpirationWindow = d
}
}

var UseSessionCache = true

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