github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/lorry/engines/redis/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 redis
    21  
    22  import (
    23  	"context"
    24  	"strings"
    25  
    26  	"github.com/1aal/kubeblocks/pkg/lorry/dcs"
    27  	"github.com/1aal/kubeblocks/pkg/lorry/engines/models"
    28  )
    29  
    30  func (mgr *Manager) GetReplicaRole(ctx context.Context, cluster *dcs.Cluster) (string, error) {
    31  	section := "Replication"
    32  
    33  	var role string
    34  	result, err := mgr.client.Info(ctx, section).Result()
    35  	if err != nil {
    36  		mgr.Logger.Error(err, "Role query error")
    37  		return role, err
    38  	} else {
    39  		// split the result into lines
    40  		lines := strings.Split(result, "\r\n")
    41  		// find the line with role
    42  		for _, line := range lines {
    43  			if strings.HasPrefix(line, "role:") {
    44  				role = strings.Split(line, ":")[1]
    45  				break
    46  			}
    47  		}
    48  	}
    49  	if role == models.MASTER {
    50  		return models.PRIMARY, nil
    51  	}
    52  	if role == models.SLAVE {
    53  		return models.SECONDARY, nil
    54  	}
    55  	return role, nil
    56  }