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Comply with the Google Cloud impersonate library #2052

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Comply with the Google Cloud impersonate library #2052

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98f1215
Comply with the Google Cloud impersonate library
fgateuil Mar 29, 2022
918dd7b
Merge branch 'gruntwork-io:master' into bugfix/issue-1997
fgateuil Jun 27, 2022
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14 changes: 11 additions & 3 deletions remote/remote_state_gcs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ import (
"github.com/sirupsen/logrus"
"golang.org/x/oauth2"
"golang.org/x/oauth2/jwt"
impersonate "google.golang.org/api/impersonate"
"google.golang.org/api/option"
)

Expand Down Expand Up @@ -460,9 +461,16 @@ func CreateGCSClient(gcsConfigRemote RemoteStateConfigGCS) (*storage.Client, err
}

if gcsConfigRemote.ImpersonateServiceAccount != "" {
opts = append(opts, option.ImpersonateCredentials(
gcsConfigRemote.ImpersonateServiceAccount,
gcsConfigRemote.ImpersonateServiceAccountDelegates...))
ts, err := impersonate.CredentialsTokenSource(context.Background(), impersonate.CredentialsConfig{
TargetPrincipal: gcsConfigRemote.ImpersonateServiceAccount,
// As for Terraform, hard-code the access scope: https://github.com/hashicorp/terraform/blob/032a4d083722da4369c03cc1e8dc5ae87b407e52/internal/backend/remote-state/gcs/backend.go#L169
Scopes: []string{storage.ScopeReadWrite},
Delegates: gcsConfigRemote.ImpersonateServiceAccountDelegates,
})
if err != nil {
return nil, err
}
opts = append(opts, option.WithTokenSource(ts))
}

client, err := storage.NewClient(ctx, opts...)
Expand Down