/
manager.go
132 lines (110 loc) · 2.73 KB
/
manager.go
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package vaultutil
import (
"context"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/hashicorp/vault/api"
"github.com/pkg/errors"
"github.com/rebuy-de/rebuy-go-sdk/v7/pkg/logutil"
)
const (
RenewIntervalSeconds = 1800
)
type Manager struct {
ctx context.Context
params Params
client *api.Client
}
func Init(ctx context.Context, params Params) (*Manager, error) {
ctx = logutil.Start(ctx, "vault-manager")
conf := api.DefaultConfig()
conf.Address = params.Address
client, err := api.NewClient(conf)
if err != nil {
return nil, errors.WithStack(err)
}
if params.Token == "" {
secret, err := KubernetesToken(client, params.Role)
if err != nil {
return nil, errors.WithStack(err)
}
client.SetToken(secret.Auth.ClientToken)
} else {
client.SetToken(params.Token)
}
secret, err := client.Auth().Token().RenewSelf(RenewIntervalSeconds)
if err != nil {
return nil, errors.WithStack(err)
}
client.SetToken(secret.Auth.ClientToken)
logutil.Get(ctx).
WithField("secret-data", prettyPrintSecret(secret)).
Debugf("got initial secret")
watcher, err := client.NewLifetimeWatcher(&api.LifetimeWatcherInput{
Secret: secret,
RenewBuffer: 3,
Increment: RenewIntervalSeconds,
})
if err != nil {
return nil, errors.WithStack(err)
}
go watcher.Start()
go func() {
ctx, cancel := context.WithCancel(ctx)
defer cancel()
for ctx.Err() == nil {
select {
case out := <-watcher.RenewCh():
logutil.Get(ctx).
WithField("secret-data", prettyPrintSecret(out.Secret)).
Debugf("renewed secret")
case err := <-watcher.DoneCh():
logutil.Get(ctx).
WithError(errors.WithStack(err)).
Errorf("renewal stopped")
cancel()
case <-ctx.Done():
logutil.Get(ctx).
Warnf("renewal canceled")
cancel()
}
}
logutil.Get(ctx).
WithError(errors.WithStack(err)).
Warnf("shutting down vault manager")
watcher.Stop()
err := client.Auth().Token().RevokeSelf("")
if err != nil {
logutil.Get(ctx).
WithError(errors.WithStack(err)).
Errorf("revoking own token failed")
} else {
logutil.Get(ctx).
WithError(errors.WithStack(err)).
Debugf("revoking own token succeeded")
}
}()
return &Manager{
ctx: ctx,
params: params,
client: client,
}, nil
}
func (m *Manager) GetClient() *api.Client {
return m.client
}
func (m *Manager) AWSConfig(ctx context.Context) (*aws.Config, error) {
var (
provider = m.AWSCredentialsProvider()
)
cfg, err := config.LoadDefaultConfig(ctx,
config.WithCredentialsProvider(provider),
config.WithRegion("eu-west-1"),
)
return &cfg, errors.WithStack(err)
}
func (m *Manager) AWSCredentialsProvider() aws.CredentialsProvider {
return &awsCredentialsProvider{
manager: m,
}
}