frontends -> share_frontends; CanAccessShare refactoring (#650)

controller/limits/agent.go

@@ -163,32 +163,43 @@ func (a *Agent) CanAccessShare(shrId int, trx *sqlx.Tx) (bool, error) {
 			return false, err
 		}
 		if env.AccountId != nil {
+			if err := a.str.LimitCheckLock(*env.AccountId, trx); err != nil {
+				return false, err
+			}
+
 			ul, err := a.getUserLimits(*env.AccountId, trx)
 			if err != nil {
 				return false, err
 			}
 
-			if ul.resource.IsGlobal() {
+			if scopedBwc, found := ul.scopes[sdk.BackendMode(shr.BackendMode)]; found {
-				if empty, err := a.str.IsBandwidthLimitJournalEmptyForGlobal(*env.AccountId, trx); err == nil && !empty {
+				latestScopedJe, err := a.isBandwidthClassLimitedForAccount(*env.AccountId, scopedBwc, trx)
-					lj, err := a.str.FindLatestBandwidthLimitJournalForGlobal(*env.AccountId, trx)
 				if err != nil {
 					return false, err
 				}
-					if lj.Action == store.LimitLimitAction {
+				if latestScopedJe != nil {
 					return false, nil
 				}
-				}
 			} else {
-				if empty, err := a.str.IsBandwidthLimitJournalEmptyForLimitClass(*env.AccountId, ul.resource.GetLimitClassId(), trx); err == nil && !empty {
+				for _, bwc := range ul.bandwidth {
-					lj, err := a.str.FindLatestBandwidthLimitJournalForLimitClass(*env.AccountId, ul.resource.GetLimitClassId(), trx)
+					latestJe, err := a.isBandwidthClassLimitedForAccount(*env.AccountId, bwc, trx)
 					if err != nil {
 						return false, err
 					}
-					if lj.Action == store.LimitLimitAction {
+					if latestJe != nil {
 						return false, nil
 					}
 				}
 			}
+
+			rc := ul.resource
+			if scopeRc, found := ul.scopes[sdk.BackendMode(shr.BackendMode)]; found {
+				rc = scopeRc
+			}
+			if rc.GetShareFrontends() > store.Unlimited {
+				// TODO: Implement frontends+1 check
+				return true, nil
+			}
 		} else {
 			return false, nil
 		}

controller/limits/config.go

@@ -10,7 +10,7 @@ type Config struct {
 	Shares         int
 	ReservedShares int
 	UniqueNames    int
-	Frontends      int
+	ShareFrontends int
 	Bandwidth      *BandwidthPerPeriod
 	Cycle          time.Duration
 	Enforcing      bool
@@ -50,7 +50,7 @@ func DefaultConfig() *Config {
 		Shares:         store.Unlimited,
 		ReservedShares: store.Unlimited,
 		UniqueNames:    store.Unlimited,
-		Frontends:      store.Unlimited,
+		ShareFrontends: store.Unlimited,
 		Bandwidth:      DefaultBandwidthPerPeriod(),
 		Enforcing:      false,
 		Cycle:          15 * time.Minute,

controller/limits/resourceCountClass.go

@@ -37,8 +37,8 @@ func (rcc *configResourceCountClass) GetUniqueNames() int {
 	return rcc.cfg.UniqueNames
 }
 
-func (rcc *configResourceCountClass) GetFrontends() int {
+func (rcc *configResourceCountClass) GetShareFrontends() int {
-	return rcc.cfg.Frontends
+	return rcc.cfg.ShareFrontends
 }
 
 func (rcc *configResourceCountClass) String() string {

controller/store/limitClass.go

@@ -22,7 +22,7 @@ type ResourceCountClass interface {
 	GetShares() int
 	GetReservedShares() int
 	GetUniqueNames() int
-	GetFrontends() int
+	GetShareFrontends() int
 }
 
 type BandwidthClass interface {
@@ -43,7 +43,7 @@ type LimitClass struct {
 	Shares         int
 	ReservedShares int
 	UniqueNames    int
-	Frontends      int
+	ShareFrontends int
 	PeriodMinutes  int
 	RxBytes        int64
 	TxBytes        int64
@@ -79,8 +79,8 @@ func (lc LimitClass) GetUniqueNames() int {
 	return lc.UniqueNames
 }
 
-func (lc LimitClass) GetFrontends() int {
+func (lc LimitClass) GetShareFrontends() int {
-	return lc.Frontends
+	return lc.ShareFrontends
 }
 
 func (lc LimitClass) GetBackendMode() sdk.BackendMode {
@@ -127,8 +127,8 @@ func (lc LimitClass) String() string {
 	if lc.UniqueNames > Unlimited {
 		out += fmt.Sprintf(", uniqueNames: %d", lc.UniqueNames)
 	}
-	if lc.Frontends > Unlimited {
+	if lc.ShareFrontends > Unlimited {
-		out += fmt.Sprintf(", frontends: %d", lc.Frontends)
+		out += fmt.Sprintf(", frontends: %d", lc.ShareFrontends)
 	}
 	if lc.RxBytes > Unlimited || lc.TxBytes > Unlimited || lc.TotalBytes > Unlimited {
 		out += fmt.Sprintf(", periodMinutes: %d", lc.PeriodMinutes)
@@ -149,12 +149,12 @@ func (lc LimitClass) String() string {
 var _ BandwidthClass = (*LimitClass)(nil)
 
 func (str *Store) CreateLimitClass(lc *LimitClass, trx *sqlx.Tx) (int, error) {
-	stmt, err := trx.Prepare("insert into limit_classes (backend_mode, environments, shares, reserved_shares, unique_names, frontends, period_minutes, rx_bytes, tx_bytes, total_bytes, limit_action) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) returning id")
+	stmt, err := trx.Prepare("insert into limit_classes (backend_mode, environments, shares, reserved_shares, unique_names, share_frontends, period_minutes, rx_bytes, tx_bytes, total_bytes, limit_action) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) returning id")
 	if err != nil {
 		return 0, errors.Wrap(err, "error preparing limit_classes insert statement")
 	}
 	var id int
-	if err := stmt.QueryRow(lc.BackendMode, lc.Environments, lc.Shares, lc.ReservedShares, lc.UniqueNames, lc.Frontends, lc.PeriodMinutes, lc.RxBytes, lc.TxBytes, lc.TotalBytes, lc.LimitAction).Scan(&id); err != nil {
+	if err := stmt.QueryRow(lc.BackendMode, lc.Environments, lc.Shares, lc.ReservedShares, lc.UniqueNames, lc.ShareFrontends, lc.PeriodMinutes, lc.RxBytes, lc.TxBytes, lc.TotalBytes, lc.LimitAction).Scan(&id); err != nil {
 		return 0, errors.Wrap(err, "error executing limit_classes insert statement")
 	}
 	return id, nil

controller/store/sql/postgresql/026_v0_4_32_frontend_count.sql

@@ -1,3 +1,3 @@
 -- +migrate Up
 
-alter table limit_classes add column frontends int not null default (-1);
+alter table limit_classes add column share_frontends int not null default (-1);

controller/store/sql/sqlite3/026_v0_4_32_frontend_count.sql

@@ -1,3 +1,3 @@
 -- +migrate Up
 
-alter table limit_classes add column frontends int not null default (-1);
+alter table limit_classes add column share_frontends int not null default (-1);