router

package

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Versions in this module

v0

v0.1.1

Jul 14, 2023

Changes in this version

type Router

+ RefreshBackend func()

type ScoreBasedRouter

+ func (router *ScoreBasedRouter) RefreshBackend()

type StaticRouter

+ func (r *StaticRouter) RefreshBackend()

+ type TopologyFetcher interface

+ GetTiDBTopology func(ctx context.Context) (map[string]*infosync.TiDBInfo, error)

v0.1.0

May 22, 2023

Changes in this version

+ var ErrNoInstanceToSelect = errors.New("no instances to route")

+ func InitEtcdClient(logger *zap.Logger, cfg *config.Config, certMgr *cert.CertManager) (*clientv3.Client, error)

+ type BackendEventReceiver interface

+ OnBackendChanged func(backends map[string]*backendHealth, err error)

+ type BackendFetcher interface

+ GetBackendList func(context.Context) (map[string]*BackendInfo, error)

+ type BackendInfo struct

+ IP string

+ StatusPort uint

+ type BackendObserver struct

+ func NewBackendObserver(logger *zap.Logger, eventReceiver BackendEventReceiver, httpCli *http.Client, ...) (*BackendObserver, error)

+ func StartBackendObserver(logger *zap.Logger, eventReceiver BackendEventReceiver, httpCli *http.Client, ...) (*BackendObserver, error)

+ func (bo *BackendObserver) Close()

+ func (bo *BackendObserver) Refresh()

+ func (bo *BackendObserver) Start()

+ type BackendSelector struct

+ func (bs *BackendSelector) Finish(conn RedirectableConn, succeed bool)

+ func (bs *BackendSelector) Next() (string, error)

+ func (bs *BackendSelector) Reset()

+ type BackendStatus int

+ const StatusCannotConnect

+ const StatusHealthy

+ const StatusMemoryHigh

+ const StatusRunSlow

+ const StatusSchemaOutdated

+ func (bs *BackendStatus) String() string

+ func (bs *BackendStatus) ToScore() int

+ type ConnEventReceiver interface

+ OnConnClosed func(addr string, conn RedirectableConn) error

+ OnRedirectFail func(from, to string, conn RedirectableConn) error

+ OnRedirectSucceed func(from, to string, conn RedirectableConn) error

+ type PDFetcher struct

+ func NewPDFetcher(client *clientv3.Client, logger *zap.Logger, config *config.HealthCheck) *PDFetcher

+ func (pf *PDFetcher) GetBackendList(ctx context.Context) (map[string]*BackendInfo, error)

+ type RedirectableConn interface

+ ConnectionID func() uint64

+ NotifyBackendStatus func(status BackendStatus)

+ Redirect func(addr string) bool

+ SetEventReceiver func(receiver ConnEventReceiver)

+ SetValue func(key, val any)

+ Value func(key any) any

+ type Router interface

+ Close func()

+ ConnCount func() int

+ GetBackendSelector func() BackendSelector

+ RedirectConnections func() error

+ ServerVersion func() string

+ type ScoreBasedRouter struct

+ func NewScoreBasedRouter(logger *zap.Logger) *ScoreBasedRouter

+ func (r *ScoreBasedRouter) Init(httpCli *http.Client, fetcher BackendFetcher, cfg *config.HealthCheck) error

+ func (router *ScoreBasedRouter) Close()

+ func (router *ScoreBasedRouter) ConnCount() int

+ func (router *ScoreBasedRouter) GetBackendSelector() BackendSelector

+ func (router *ScoreBasedRouter) OnBackendChanged(backends map[string]*backendHealth, err error)

+ func (router *ScoreBasedRouter) OnConnClosed(addr string, conn RedirectableConn) error

+ func (router *ScoreBasedRouter) OnRedirectFail(from, to string, conn RedirectableConn) error

+ func (router *ScoreBasedRouter) OnRedirectSucceed(from, to string, conn RedirectableConn) error

+ func (router *ScoreBasedRouter) RedirectConnections() error

+ func (router *ScoreBasedRouter) ServerVersion() string

+ type StaticFetcher struct

+ func NewStaticFetcher(staticAddrs []string) *StaticFetcher

+ func (sf *StaticFetcher) GetBackendList(context.Context) (map[string]*BackendInfo, error)

+ type StaticRouter struct

+ func NewStaticRouter(addr []string) *StaticRouter

+ func (r *StaticRouter) Close()

+ func (r *StaticRouter) ConnCount() int

+ func (r *StaticRouter) GetBackendSelector() BackendSelector

+ func (r *StaticRouter) OnConnClosed(addr string, conn RedirectableConn) error

+ func (r *StaticRouter) OnRedirectFail(from, to string, conn RedirectableConn) error

+ func (r *StaticRouter) OnRedirectSucceed(from, to string, conn RedirectableConn) error

+ func (r *StaticRouter) RedirectConnections() error

+ func (r *StaticRouter) ServerVersion() string

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