135 lines
2.7 KiB
Go
135 lines
2.7 KiB
Go
package rabbitmq
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
"sync"
|
|
|
|
"github.com/hashicorp/go-cleanhttp"
|
|
"github.com/hashicorp/vault/logical"
|
|
"github.com/hashicorp/vault/logical/framework"
|
|
"github.com/michaelklishin/rabbit-hole"
|
|
)
|
|
|
|
// Factory creates and configures the backend
|
|
func Factory(conf *logical.BackendConfig) (logical.Backend, error) {
|
|
return Backend().Setup(conf)
|
|
}
|
|
|
|
// Creates a new backend with all the paths and secrets belonging to it
|
|
func Backend() *backend {
|
|
var b backend
|
|
b.Backend = &framework.Backend{
|
|
Help: strings.TrimSpace(backendHelp),
|
|
|
|
Paths: []*framework.Path{
|
|
pathConfigConnection(&b),
|
|
pathConfigLease(&b),
|
|
pathListRoles(&b),
|
|
pathCreds(&b),
|
|
pathRoles(&b),
|
|
},
|
|
|
|
Secrets: []*framework.Secret{
|
|
secretCreds(&b),
|
|
},
|
|
|
|
Clean: b.resetClient,
|
|
|
|
Invalidate: b.invalidate,
|
|
}
|
|
|
|
return &b
|
|
}
|
|
|
|
type backend struct {
|
|
*framework.Backend
|
|
|
|
client *rabbithole.Client
|
|
lock sync.RWMutex
|
|
}
|
|
|
|
// DB returns the database connection.
|
|
func (b *backend) Client(s logical.Storage) (*rabbithole.Client, error) {
|
|
b.lock.RLock()
|
|
|
|
// If we already have a client, return it
|
|
if b.client != nil {
|
|
b.lock.RUnlock()
|
|
return b.client, nil
|
|
}
|
|
|
|
b.lock.RUnlock()
|
|
|
|
// Otherwise, attempt to make connection
|
|
entry, err := s.Get("config/connection")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if entry == nil {
|
|
return nil, fmt.Errorf("configure the client connection with config/connection first")
|
|
}
|
|
|
|
var connConfig connectionConfig
|
|
if err := entry.DecodeJSON(&connConfig); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
b.lock.Lock()
|
|
defer b.lock.Unlock()
|
|
|
|
// If the client was creted during the lock switch, return it
|
|
if b.client != nil {
|
|
return b.client, nil
|
|
}
|
|
|
|
b.client, err = rabbithole.NewClient(connConfig.URI, connConfig.Username, connConfig.Password)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Use a default pooled transport so there would be no leaked file descriptors
|
|
b.client.SetTransport(cleanhttp.DefaultPooledTransport())
|
|
|
|
return b.client, nil
|
|
}
|
|
|
|
// resetClient forces a connection next time Client() is called.
|
|
func (b *backend) resetClient() {
|
|
b.lock.Lock()
|
|
defer b.lock.Unlock()
|
|
|
|
b.client = nil
|
|
}
|
|
|
|
func (b *backend) invalidate(key string) {
|
|
switch key {
|
|
case "config/connection":
|
|
b.resetClient()
|
|
}
|
|
}
|
|
|
|
// Lease returns the lease information
|
|
func (b *backend) Lease(s logical.Storage) (*configLease, error) {
|
|
entry, err := s.Get("config/lease")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if entry == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
var result configLease
|
|
if err := entry.DecodeJSON(&result); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &result, nil
|
|
}
|
|
|
|
const backendHelp = `
|
|
The RabbitMQ backend dynamically generates RabbitMQ users.
|
|
|
|
After mounting this backend, configure it using the endpoints within
|
|
the "config/" path.
|
|
`
|