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Reduce the size of the tenant id

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Signed-off-by: gearnode <bryan@frimin.fr>
This commit is contained in:
gearnode
2025-03-10 14:33:44 +01:00
parent 58eda95d93
commit 7fe0774442
2 changed files with 35 additions and 49 deletions
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29
pkg/gid/gid.go
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@@ -10,12 +10,11 @@ import (
)
const (
GIDSize = 32 // 256 bits total
GIDSize = 24 // 192 bits total
)
type (
GID [GIDSize]byte
TenantID [16]byte // 128-bit tenant ID
GID [GIDSize]byte
)
var (
@@ -44,25 +43,25 @@ func New(tenantID TenantID, entityType uint16) GID {
// NewGID creates a new GID with the specified entity type and tenant ID
// Structure:
// - Bytes 0-15: Tenant ID (full 16 bytes)
// - Bytes 16-17: Entity Type (uint16)
// - Bytes 18-25: Timestamp (milliseconds since epoch)
// - Bytes 26-31: Random data for uniqueness
// - Bytes 0-7: Tenant ID (8 bytes)
// - Bytes 8-9: Entity Type (uint16)
// - Bytes 10-17: Timestamp (milliseconds since epoch)
// - Bytes 18-23: Random data for uniqueness
func NewGID(tenantID TenantID, entityType uint16) (GID, error) {
var id GID
// Write full tenant ID (16 bytes)
copy(id[0:16], tenantID[:])
// Write full tenant ID (8 bytes)
copy(id[0:8], tenantID[:])
// Write entity type (2 bytes)
binary.BigEndian.PutUint16(id[16:18], entityType)
binary.BigEndian.PutUint16(id[8:10], entityType)
// Get current timestamp (milliseconds) and write it (8 bytes)
now := time.Now().UnixMilli()
binary.BigEndian.PutUint64(id[18:26], uint64(now))
binary.BigEndian.PutUint64(id[10:18], uint64(now))
// Fill the rest with random data (6 bytes)
_, err := rand.Read(id[26:32])
_, err := rand.Read(id[18:24])
if err != nil {
return Nil, fmt.Errorf("failed to generate random bytes: %v", err)
}
@@ -78,18 +77,18 @@ func (gid GID) Value() (driver.Value, error) {
// TenantID extracts the tenant ID from the GID
func (gid GID) TenantID() TenantID {
var tenantID TenantID
copy(tenantID[:], gid[0:16])
copy(tenantID[:], gid[0:8])
return tenantID
}
// EntityType extracts the entity type from the GID
func (gid GID) EntityType() uint16 {
return binary.BigEndian.Uint16(gid[16:18])
return binary.BigEndian.Uint16(gid[8:10])
}
// Timestamp extracts the timestamp from the GID
func (gid GID) Timestamp() time.Time {
millis := binary.BigEndian.Uint64(gid[18:26])
millis := binary.BigEndian.Uint64(gid[10:18])
return time.UnixMilli(int64(millis))
}