github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/lorry/engines/etcd/get_replica_role.go (about)

     1  /*
     2  Copyright (C) 2022-2023 ApeCloud Co., Ltd
     3  
     4  This file is part of KubeBlocks project
     5  
     6  This program is free software: you can redistribute it and/or modify
     7  it under the terms of the GNU Affero General Public License as published by
     8  the Free Software Foundation, either version 3 of the License, or
     9  (at your option) any later version.
    10  
    11  This program is distributed in the hope that it will be useful
    12  but WITHOUT ANY WARRANTY; without even the implied warranty of
    13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14  GNU Affero General Public License for more details.
    15  
    16  You should have received a copy of the GNU Affero General Public License
    17  along with this program.  If not, see <http://www.gnu.org/licenses/>.
    18  */
    19  
    20  package etcd
    21  
    22  import (
    23  	"context"
    24  
    25  	"github.com/1aal/kubeblocks/pkg/lorry/dcs"
    26  	"github.com/1aal/kubeblocks/pkg/lorry/engines/models"
    27  )
    28  
    29  func (mgr *Manager) GetReplicaRole(ctx context.Context, cluster *dcs.Cluster) (string, error) {
    30  	etcdResp, err := mgr.etcd.Status(ctx, mgr.endpoint)
    31  	if err != nil {
    32  		return "", err
    33  	}
    34  
    35  	role := models.FOLLOWER
    36  	switch {
    37  	case etcdResp.Leader == etcdResp.Header.MemberId:
    38  		role = models.LEADER
    39  	case etcdResp.IsLearner:
    40  		role = models.LEARNER
    41  	}
    42  
    43  	return role, nil
    44  }