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Add RW locks to prevent concurrent updates to the DB

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Although this may slow certain API calls down and may not be, strictly
necessary, I think it's best to put all the ACME EAB operations behind
RW locks to prevent concurrent updates to the DB and guarantee
consistent result sets.
pull/650/head
Herman Slatman 2 years ago
parent 868cc4ad7f
commit c3f2fd8ef0
No known key found for this signature in database
GPG Key ID: F4D8A44EA0A75A4F
2 changed files with 63 additions and 43 deletions
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37
acme/db/nosql/account.go
Unescape Escape View File

@ -3,7 +3,6 @@ package nosql
import (
"context"
"encoding/json"
"sync"
"time"
"github.com/pkg/errors"
@ -12,9 +11,6 @@ import (
"go.step.sm/crypto/jose"
)
// Mutex for locking referencesByProvisioner index operations.
var referencesByProvisionerIndexMux sync.Mutex
// dbAccount represents an ACME account.
type dbAccount struct {
ID string `json:"id"`
@ -30,21 +26,6 @@ func (dba *dbAccount) clone() *dbAccount {
return &nu
}
type dbExternalAccountKey struct {
ID string `json:"id"`
ProvisionerID string `json:"provisionerID"`
Reference string `json:"reference"`
AccountID string `json:"accountID,omitempty"`
KeyBytes []byte `json:"key"`
CreatedAt time.Time `json:"createdAt"`
BoundAt time.Time `json:"boundAt"`
}
type dbExternalAccountKeyReference struct {
Reference string `json:"reference"`
ExternalAccountKeyID string `json:"externalAccountKeyID"`
}
func (db *DB) getAccountIDByKeyID(ctx context.Context, kid string) (string, error) {
id, err := db.db.Get(accountByKeyIDTable, []byte(kid))
if err != nil {
@ -73,24 +54,6 @@ func (db *DB) getDBAccount(ctx context.Context, id string) (*dbAccount, error) {
return dbacc, nil
}
// getDBExternalAccountKey retrieves and unmarshals dbExternalAccountKey.
func (db *DB) getDBExternalAccountKey(ctx context.Context, id string) (*dbExternalAccountKey, error) {
data, err := db.db.Get(externalAccountKeyTable, []byte(id))
if err != nil {
if nosqlDB.IsErrNotFound(err) {
return nil, acme.ErrNotFound
}
return nil, errors.Wrapf(err, "error loading external account key %s", id)
}
dbeak := new(dbExternalAccountKey)
if err = json.Unmarshal(data, dbeak); err != nil {
return nil, errors.Wrapf(err, "error unmarshaling external account key %s into dbExternalAccountKey", id)
}
return dbeak, nil
}
// GetAccount retrieves an ACME account by ID.
func (db *DB) GetAccount(ctx context.Context, id string) (*acme.Account, error) {
dbacc, err := db.getDBAccount(ctx, id)

69
acme/db/nosql/eab.go
Unescape Escape View File

@ -4,14 +4,59 @@ import (
"context"
"crypto/rand"
"encoding/json"
"sync"
"time"
"github.com/pkg/errors"
"github.com/smallstep/certificates/acme"
nosqlDB "github.com/smallstep/nosql"
)
// externalAccountKeyMutex for read/write locking of EAK operations.
var externalAccountKeyMutex sync.RWMutex
// referencesByProvisionerIndexMutex for locking referencesByProvisioner index operations.
var referencesByProvisionerIndexMutex sync.Mutex
type dbExternalAccountKey struct {
ID string `json:"id"`
ProvisionerID string `json:"provisionerID"`
Reference string `json:"reference"`
AccountID string `json:"accountID,omitempty"`
KeyBytes []byte `json:"key"`
CreatedAt time.Time `json:"createdAt"`
BoundAt time.Time `json:"boundAt"`
}
type dbExternalAccountKeyReference struct {
Reference string `json:"reference"`
ExternalAccountKeyID string `json:"externalAccountKeyID"`
}
// getDBExternalAccountKey retrieves and unmarshals dbExternalAccountKey.
func (db *DB) getDBExternalAccountKey(ctx context.Context, id string) (*dbExternalAccountKey, error) {
data, err := db.db.Get(externalAccountKeyTable, []byte(id))
if err != nil {
if nosqlDB.IsErrNotFound(err) {
return nil, acme.ErrNotFound
}
return nil, errors.Wrapf(err, "error loading external account key %s", id)
}
dbeak := new(dbExternalAccountKey)
if err = json.Unmarshal(data, dbeak); err != nil {
return nil, errors.Wrapf(err, "error unmarshaling external account key %s into dbExternalAccountKey", id)
}
return dbeak, nil
}
// CreateExternalAccountKey creates a new External Account Binding key with a name
func (db *DB) CreateExternalAccountKey(ctx context.Context, provisionerID, reference string) (*acme.ExternalAccountKey, error) {
externalAccountKeyMutex.Lock()
defer externalAccountKeyMutex.Unlock()
keyID, err := randID()
if err != nil {
return nil, err
@ -62,6 +107,9 @@ func (db *DB) CreateExternalAccountKey(ctx context.Context, provisionerID, refer
// GetExternalAccountKey retrieves an External Account Binding key by KeyID
func (db *DB) GetExternalAccountKey(ctx context.Context, provisionerID, keyID string) (*acme.ExternalAccountKey, error) {
externalAccountKeyMutex.RLock()
defer externalAccountKeyMutex.RUnlock()
dbeak, err := db.getDBExternalAccountKey(ctx, keyID)
if err != nil {
return nil, err
@ -83,6 +131,9 @@ func (db *DB) GetExternalAccountKey(ctx context.Context, provisionerID, keyID st
}
func (db *DB) DeleteExternalAccountKey(ctx context.Context, provisionerID, keyID string) error {
externalAccountKeyMutex.Lock()
defer externalAccountKeyMutex.Unlock()
dbeak, err := db.getDBExternalAccountKey(ctx, keyID)
if err != nil {
return errors.Wrapf(err, "error loading ACME EAB Key with Key ID %s", keyID)
@ -109,8 +160,8 @@ func (db *DB) DeleteExternalAccountKey(ctx context.Context, provisionerID, keyID
// GetExternalAccountKeys retrieves all External Account Binding keys for a provisioner
func (db *DB) GetExternalAccountKeys(ctx context.Context, provisionerID string) ([]*acme.ExternalAccountKey, error) {
// TODO: mutex?
externalAccountKeyMutex.RLock()
defer externalAccountKeyMutex.RUnlock()
var eakIDs []string
r, err := db.db.Get(externalAccountKeyIDsByProvisionerIDTable, []byte(provisionerID))
@ -152,6 +203,9 @@ func (db *DB) GetExternalAccountKeys(ctx context.Context, provisionerID string)
// GetExternalAccountKeyByReference retrieves an External Account Binding key with unique reference
func (db *DB) GetExternalAccountKeyByReference(ctx context.Context, provisionerID, reference string) (*acme.ExternalAccountKey, error) {
externalAccountKeyMutex.RLock()
defer externalAccountKeyMutex.RUnlock()
if reference == "" {
return nil, nil
}
@ -171,6 +225,9 @@ func (db *DB) GetExternalAccountKeyByReference(ctx context.Context, provisionerI
}
func (db *DB) UpdateExternalAccountKey(ctx context.Context, provisionerID string, eak *acme.ExternalAccountKey) error {
externalAccountKeyMutex.Lock()
defer externalAccountKeyMutex.Unlock()
old, err := db.getDBExternalAccountKey(ctx, eak.ID)
if err != nil {
return err
@ -202,8 +259,8 @@ func (db *DB) UpdateExternalAccountKey(ctx context.Context, provisionerID string
}
func (db *DB) addEAKID(ctx context.Context, provisionerID, eakID string) error {
referencesByProvisionerIndexMux.Lock()
defer referencesByProvisionerIndexMux.Unlock()
referencesByProvisionerIndexMutex.Lock()
defer referencesByProvisionerIndexMutex.Unlock()
if eakID == "" {
return errors.Errorf("can't add empty eakID for provisioner %s", provisionerID)
@ -245,8 +302,8 @@ func (db *DB) addEAKID(ctx context.Context, provisionerID, eakID string) error {
}
func (db *DB) deleteEAKID(ctx context.Context, provisionerID, eakID string) error {
referencesByProvisionerIndexMux.Lock()
defer referencesByProvisionerIndexMux.Unlock()
referencesByProvisionerIndexMutex.Lock()
defer referencesByProvisionerIndexMutex.Unlock()
var eakIDs []string
b, err := db.db.Get(externalAccountKeyIDsByProvisionerIDTable, []byte(provisionerID))

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