binding

package
v0.7.2-beta.18 Latest Latest
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 Go to latest Published: Dec 11, 2023 License: AGPL-3.0 Imports: 34 Imported by: 0

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Index

Constants

View Source 
const (
	ReadWrite AccessMode = "ReadWrite"
	Readonly  AccessMode = "Readonly"
	None      AccessMode = "None"

	// keys from response's metadata.
	RespOpKey           = "operation"
	RespStartTimeKey    = "start-time"
	RespRowsAffectedKey = "rows-affected"
	RespEndTimeKey      = "end-time"
	RespDurationKey     = "duration"
	StatusCode          = "status-code"
	// 451 Unavailable For Legal Reasons, used to indicate operation failed.
	OperationFailedHTTPCode = "451"
	// 404 Not Found, used to indicate operation not found.
	OperationNotFoundHTTPCode = "404"

	// CommandSQLKey keys from request's metadata.
	CommandSQLKey = "sql"

	RSMRoleUpdateMechanismVarName = "KB_RSM_ROLE_UPDATE_MECHANISM"
)
View Source 
const (
	PRIMARY   = "primary"
	SECONDARY = "secondary"
	MASTER    = "master"
	SLAVE     = "slave"
	LEADER    = "Leader"
	FOLLOWER  = "Follower"
	LEARNER   = "Learner"
	CANDIDATE = "Candidate"
)

Variables

View Source 
var (
	ErrNoSQL           = fmt.Errorf(errMsgNoSQL)
	ErrNoUserName      = fmt.Errorf(errMsgNoUserName)
	ErrNoPassword      = fmt.Errorf(errMsgNoPassword)
	ErrNoRoleName      = fmt.Errorf(errMsgNoRoleName)
	ErrInvalidRoleName = fmt.Errorf(errMsgInvalidRoleName)
	ErrNoSuchUser      = fmt.Errorf(errMsgNoSuchUser)
)

Functions

func DefaultUserInfoParser 

func DefaultUserInfoParser(req *ProbeRequest, object *UserInfo) error

func ParseObjFromRequest 

func ParseObjFromRequest[T customizedObjType](req *ProbeRequest, parse objectParser[T], validator objectValidator[T], object *T) error

func SentProbeEvent 

func SentProbeEvent(ctx context.Context, opsResult OpsResult, resp *ProbeResponse, log logr.Logger)

func SortRoleByWeight 

func SortRoleByWeight(r1, r2 RoleType) bool

func String2RoleType 

func String2RoleType(roleName string) RoleType

func UserNameAndPasswdValidator 

func UserNameAndPasswdValidator(user UserInfo) error

func UserNameAndRoleValidator 

func UserNameAndRoleValidator(user UserInfo) error

func UserNameValidator 

func UserNameValidator(user UserInfo) error

Types

type AccessMode 

type AccessMode string

AccessMode defines SVC access mode enums. +enum

type BaseInternalOps 

type BaseInternalOps interface {
	InternalQuery(ctx context.Context, sql string) ([]byte, error)
	InternalExec(ctx context.Context, sql string) (int64, error)
	GetLogger() logr.Logger
	GetRunningPort() int
	Invoke(ctx context.Context, req *ProbeRequest) (*ProbeResponse, error)
}

type BaseOperations 

type BaseOperations struct {
	CheckRunningFailedCount    int
	CheckStatusFailedCount     int
	CheckRoleFailedCount       int
	RoleUnchangedCount         int
	FailedEventReportFrequency int
	// RoleDetectionThreshold is used to set the report duration of role event after role changed,
	// then event controller can always get rolechanged events to maintain pod label accurately
	// in cases of:
	// 1 rolechanged event lost;
	// 2 pod role label deleted or updated incorrectly.
	RoleDetectionThreshold int
	DBPort                 int
	DBAddress              string
	DBType                 string
	OriRole                string
	DBRoles                map[string]AccessMode
	Logger                 logr.Logger
	Metadata               map[string]string
	InitIfNeed             func() bool
	Manager                component.DBManager
	GetRole                func(context.Context, *ProbeRequest, *ProbeResponse) (string, error)

	OperationsMap map[OperationKind]Operation
}

func (*BaseOperations) CheckRoleOps 

func (ops *BaseOperations) CheckRoleOps(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

func (*BaseOperations) CheckRunningOps 

func (ops *BaseOperations) CheckRunningOps(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

CheckRunningOps checks whether the binding service is in running status, If check fails continuously, report an event at FailedEventReportFrequency frequency

func (*BaseOperations) GetRoleOps 

func (ops *BaseOperations) GetRoleOps(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

func (*BaseOperations) Init 

func (ops *BaseOperations) Init(properties component.Properties)

func (*BaseOperations) Invoke 

func (ops *BaseOperations) Invoke(ctx context.Context, req *ProbeRequest) (*ProbeResponse, error)

Invoke handles all invoke operations.

func (*BaseOperations) JoinMemberOps 

func (ops *BaseOperations) JoinMemberOps(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

JoinMemberOps is used to join the current member into the DB cluster. If OpsResult["event"] == "success" and err == nil, it indicates that the member has successfully Joined. In any other situation, it signifies a failure.

func (*BaseOperations) LeaveMemberOps 

func (ops *BaseOperations) LeaveMemberOps(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

LeaveMemberOps is used to remove the current member from the DB cluster. If OpsResult["event"] == "success" and err == nil, it indicates that the member has successfully left. In any other situation, it signifies a failure. - "error": is used to indicate if the leave operation has failed. If error is nil, it signifies a successful leave, and if it is not nil, it indicates a failure. - "OpsResult": provides additional detailed messages regarding the operation.

  • "OpsResult['event']" can hold either "fail" or "success" based on the outcome of the leave operation.
  • "OpsResult['message']" provides a specific reason explaining the event.

func (*BaseOperations) LockOps 

func (ops *BaseOperations) LockOps(ctx context.Context, req *ProbeRequest, rsp *ProbeResponse) (OpsResult, error)

func (*BaseOperations) Operations 

func (ops *BaseOperations) Operations() []OperationKind

Operations returns list of operations supported by the binding.

func (*BaseOperations) RegisterOperation 

func (ops *BaseOperations) RegisterOperation(opsKind OperationKind, operation Operation)

func (*BaseOperations) RegisterOperationOnDBReady 

func (ops *BaseOperations) RegisterOperationOnDBReady(opsKind OperationKind, operation Operation, manager component.DBManager)

func (*BaseOperations) SwitchoverOps 

func (ops *BaseOperations) SwitchoverOps(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

func (*BaseOperations) UnlockOps 

func (ops *BaseOperations) UnlockOps(ctx context.Context, req *ProbeRequest, rsp *ProbeResponse) (OpsResult, error)

func (*BaseOperations) VolumeProtectionOps 

func (ops *BaseOperations) VolumeProtectionOps(ctx context.Context, req *ProbeRequest, rsp *ProbeResponse) (OpsResult, error)

type Operation 

type Operation func(ctx context.Context, req *ProbeRequest, resp *ProbeResponse) (OpsResult, error)

func StartupCheckWraper 

func StartupCheckWraper(manager component.DBManager, operation Operation) Operation

type OpsResult 

type OpsResult map[string]interface{}

func ExecuteObject 

func ExecuteObject[T customizedObjType](ctx context.Context, ops BaseInternalOps, req *ProbeRequest,
	opsKind OperationKind, sqlTplRend cmdRender[T], msgTplRend cmdRender[T], object T) (OpsResult, error)

func QueryObject 

func QueryObject[T customizedObjType](ctx context.Context, ops BaseInternalOps, req *ProbeRequest,
	opsKind OperationKind, sqlTplRend cmdRender[T], dataProcessor resultRender[T], object T) (OpsResult, error)

type ProbeRequest 

type ProbeRequest struct {
	Data      []byte            `json:"data"`
	Metadata  map[string]string `json:"metadata"`
	Operation OperationKind     `json:"operation"`
}

type ProbeResponse 

type ProbeResponse struct {
	Data     []byte            `json:"data"`
	Metadata map[string]string `json:"metadata"`
}

type RedisEntry 

type RedisEntry struct {
	Key  string `json:"key"`
	Data []byte `json:"data,omitempty"`
}

type SlaveStatus 

type SlaveStatus struct {
	SecondsBehindMaster int64 `json:"Seconds_Behind_Master"`
}

Source Files

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