github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/lorry/dcs/dcs.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 dcs
    21  
    22  import (
    23  	"github.com/1aal/kubeblocks/pkg/constant"
    24  	viper "github.com/1aal/kubeblocks/pkg/viperx"
    25  )
    26  
    27  type DCS interface {
    28  	Initialize(*Cluster) error
    29  
    30  	// cluster manage functions
    31  	GetClusterName() string
    32  	GetCluster() (*Cluster, error)
    33  	GetClusterFromCache() *Cluster
    34  	ResetCluster()
    35  	DeleteCluster()
    36  
    37  	// cluster scole ha config
    38  	GetHaConfig() (*HaConfig, error)
    39  	UpdateHaConfig() error
    40  
    41  	// member manager funtions
    42  	GetMembers() ([]Member, error)
    43  	AddCurrentMember() error
    44  
    45  	// manual switchover
    46  	GetSwitchover() (*Switchover, error)
    47  	CreateSwitchover(string, string) error
    48  	DeleteSwitchover() error
    49  
    50  	// cluster scope leader lock
    51  	AttempAcquireLease() error
    52  	CreateLease() error
    53  	IsLeaseExist() (bool, error)
    54  	HasLease() bool
    55  	ReleaseLease() error
    56  	UpdateLease() error
    57  
    58  	GetLeader() (*Leader, error)
    59  }
    60  
    61  var dcs DCS
    62  
    63  func init() {
    64  	viper.SetDefault("KB_TTL", 15)
    65  	viper.SetDefault("KB_MAX_LAG", 10)
    66  	viper.SetDefault(constant.KubernetesClusterDomainEnv, constant.DefaultDNSDomain)
    67  }
    68  
    69  func SetStore(d DCS) {
    70  	dcs = d
    71  }
    72  
    73  func GetStore() DCS {
    74  	return dcs
    75  }
    76  
    77  func InitStore() error {
    78  	store, err := NewKubernetesStore()
    79  	if err != nil {
    80  		return err
    81  	}
    82  	dcs = store
    83  	return nil
    84  }