pkg/core/leader/model.go

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package leader

import "time"

// LeaderLease is the GORM model for the leader_leases table
// It uses optimistic locking via the Version field to ensure atomic leader elections
type LeaderLease struct {
	ID         uint      `gorm:"primaryKey;autoIncrement"`
	Component  string    `gorm:"uniqueIndex;size:64;not null"`
	HolderID   string    `gorm:"size:255;not null"`
	AcquiredAt time.Time `gorm:"not null"`
	ExpiresAt  time.Time `gorm:"not null"`
	Version    int64     `gorm:"not null;default:0"`
}

// TableName returns the table name for LeaderLease
func (LeaderLease) TableName() string {
	return "leader_leases"
}