server

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Published: Oct 16, 2017 License: Apache-2.0 Imports: 47 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source
var (
	PDReleaseVersion = "1.0.0"
	PDBuildTS        = "None"
	PDGitHash        = "None"
	PDGitBranch      = "None"
)

Version information.

View Source
var (
	ErrNotBootstrapped = errors.New("TiKV cluster is not bootstrapped, please start TiKV first")
)

Error instances

Functions

func GetMembers

func GetMembers(etcdClient *clientv3.Client) ([]*pdpb.Member, error)

GetMembers return a slice of Members.

func LogPDInfo

func LogPDInfo()

LogPDInfo prints the PD version information.

func NewTestServer

func NewTestServer(c *check.C) (*Config, *Server, CleanupFunc)

NewTestServer creates a pd server for testing.

func ParseUrls

func ParseUrls(s string) ([]url.URL, error)

ParseUrls parse a string into multiple urls. Export for api.

func PrepareJoinCluster

func PrepareJoinCluster(cfg *Config) error

PrepareJoinCluster sends MemberAdd command to PD cluster, and returns the initial configuration of the PD cluster.

TL;TR: The join functionality is safe. With data, join does nothing, w/o data

and it is not a member of cluster, join does MemberAdd, it returns an
error if PD tries to join itself, missing data or join a duplicated PD.

Etcd automatically re-joins the cluster if there is a data directory. So first it checks if there is a data directory or not. If there is, it returns an empty string (etcd will get the correct configurations from the data directory.)

If there is no data directory, there are following cases:

  • A new PD joins an existing cluster. What join does: MemberAdd, MemberList, then generate initial-cluster.

  • A failed PD re-joins the previous cluster. What join does: return an error. (etcd reports: raft log corrupted, truncated, or lost?)

  • A deleted PD joins to previous cluster. What join does: MemberAdd, MemberList, then generate initial-cluster. (it is not in the member list and there is no data, so we can treat it as a new PD.)

If there is a data directory, there are following special cases:

  • A failed PD tries to join the previous cluster but it has been deleted during its downtime. What join does: return "" (etcd will connect to other peers and find that the PD itself has been removed.)

  • A deleted PD joins the previous cluster. What join does: return "" (as etcd will read data directory and find that the PD itself has been removed, so an empty string is fine.)

func PrintPDInfo

func PrintPDInfo()

PrintPDInfo prints the PD version information without log info.

func StartMonitor

func StartMonitor(now func() time.Time, systimeErrHandler func())

StartMonitor calls systimeErrHandler if system time jump backward.

Types

type CleanupFunc

type CleanupFunc func()

CleanupFunc closes test pd server(s) and deletes any files left behind.

type ClusterStatus

type ClusterStatus struct {
	RaftBootstrapTime time.Time `json:"raft_bootstrap_time,omitempty"`
}

ClusterStatus saves some state information

type Config

type Config struct {
	*flag.FlagSet `json:"-"`

	Version bool `json:"-"`

	ClientUrls          string `toml:"client-urls" json:"client-urls"`
	PeerUrls            string `toml:"peer-urls" json:"peer-urls"`
	AdvertiseClientUrls string `toml:"advertise-client-urls" json:"advertise-client-urls"`
	AdvertisePeerUrls   string `toml:"advertise-peer-urls" json:"advertise-peer-urls"`

	Name    string `toml:"name" json:"name"`
	DataDir string `toml:"data-dir" json:"data-dir"`

	InitialCluster      string `toml:"initial-cluster" json:"initial-cluster"`
	InitialClusterState string `toml:"initial-cluster-state" json:"initial-cluster-state"`

	// Join to an existing pd cluster, a string of endpoints.
	Join string `toml:"join" json:"join"`

	// LeaderLease time, if leader doesn't update its TTL
	// in etcd after lease time, etcd will expire the leader key
	// and other servers can campaign the leader again.
	// Etcd onlys support seoncds TTL, so here is second too.
	LeaderLease int64 `toml:"lease" json:"lease"`

	// Log related config.
	Log logutil.LogConfig `toml:"log" json:"log"`

	// Backward compatibility.
	LogFileDeprecated  string `toml:"log-file" json:"log-file"`
	LogLevelDeprecated string `toml:"log-level" json:"log-level"`

	// TsoSaveInterval is the interval to save timestamp.
	TsoSaveInterval typeutil.Duration `toml:"tso-save-interval" json:"tso-save-interval"`

	Metric metricutil.MetricConfig `toml:"metric" json:"metric"`

	Schedule ScheduleConfig `toml:"schedule" json:"schedule"`

	Replication ReplicationConfig `toml:"replication" json:"replication"`

	// QuotaBackendBytes Raise alarms when backend size exceeds the given quota. 0 means use the default quota.
	// the default size is 2GB, the maximum is 8GB.
	QuotaBackendBytes typeutil.ByteSize `toml:"quota-backend-bytes" json:"quota-backend-bytes"`
	// AutoCompactionRetention for mvcc key value store in hour. 0 means disable auto compaction.
	// the default retention is 1 hour
	AutoCompactionRetention int `toml:"auto-compaction-retention" json:"auto-compaction-retention"`

	// TickInterval is the interval for etcd Raft tick.
	TickInterval typeutil.Duration `toml:"tick-interval"`
	// ElectionInterval is the interval for etcd Raft election.
	ElectionInterval typeutil.Duration `toml:"election-interval"`

	// For all warnings during parsing.
	WarningMsgs []string

	// Enable namespace isolation.
	EnableNamespace bool `toml:"enable-namespace" json:"enable-namespace"`
	// contains filtered or unexported fields
}

Config is the pd server configuration.

func NewConfig

func NewConfig() *Config

NewConfig creates a new config.

func NewTestMultiConfig

func NewTestMultiConfig(count int) []*Config

NewTestMultiConfig is only for test to create multiple pd configurations. Because pd-client also needs this, so export here.

func NewTestSingleConfig

func NewTestSingleConfig() *Config

NewTestSingleConfig is only for test to create one pd. Because pd-client also needs this, so export here.

func (*Config) Parse

func (c *Config) Parse(arguments []string) error

Parse parses flag definitions from the argument list.

func (*Config) String

func (c *Config) String() string

type Handler

type Handler struct {
	// contains filtered or unexported fields
}

Handler is a helper to export methods to handle API/RPC requests.

func (*Handler) AddAddPeerOperator

func (h *Handler) AddAddPeerOperator(regionID uint64, toStoreID uint64) error

AddAddPeerOperator adds an operator to add peer.

func (*Handler) AddBalanceLeaderScheduler

func (h *Handler) AddBalanceLeaderScheduler() error

AddBalanceLeaderScheduler adds a balance-leader-scheduler.

func (*Handler) AddEvictLeaderScheduler

func (h *Handler) AddEvictLeaderScheduler(storeID uint64) error

AddEvictLeaderScheduler adds an evict-leader-scheduler.

func (*Handler) AddGrantLeaderScheduler

func (h *Handler) AddGrantLeaderScheduler(storeID uint64) error

AddGrantLeaderScheduler adds a grant-leader-scheduler.

func (*Handler) AddRemovePeerOperator

func (h *Handler) AddRemovePeerOperator(regionID uint64, fromStoreID uint64) error

AddRemovePeerOperator adds an operator to remove peer.

func (*Handler) AddScheduler

func (h *Handler) AddScheduler(s schedule.Scheduler, args ...string) error

AddScheduler adds a scheduler.

func (*Handler) AddShuffleLeaderScheduler

func (h *Handler) AddShuffleLeaderScheduler() error

AddShuffleLeaderScheduler adds a shuffle-leader-scheduler.

func (*Handler) AddShuffleRegionScheduler

func (h *Handler) AddShuffleRegionScheduler() error

AddShuffleRegionScheduler adds a shuffle-region-scheduler.

func (*Handler) AddTransferLeaderOperator

func (h *Handler) AddTransferLeaderOperator(regionID uint64, storeID uint64) error

AddTransferLeaderOperator adds an operator to transfer leader to the store.

func (*Handler) AddTransferPeerOperator

func (h *Handler) AddTransferPeerOperator(regionID uint64, fromStoreID, toStoreID uint64) error

AddTransferPeerOperator adds an operator to transfer peer.

func (*Handler) AddTransferRegionOperator

func (h *Handler) AddTransferRegionOperator(regionID uint64, storeIDs map[uint64]struct{}) error

AddTransferRegionOperator adds an operator to transfer region to the stores.

func (*Handler) GetAdminOperators

func (h *Handler) GetAdminOperators() ([]*schedule.Operator, error)

GetAdminOperators returns the running admin operators.

func (*Handler) GetHistoryOperators

func (h *Handler) GetHistoryOperators() ([]*schedule.Operator, error)

GetHistoryOperators returns history operators

func (*Handler) GetHistoryOperatorsOfKind

func (h *Handler) GetHistoryOperatorsOfKind(kind core.ResourceKind) ([]*schedule.Operator, error)

GetHistoryOperatorsOfKind returns history operators by Kind

func (*Handler) GetHotReadRegions

func (h *Handler) GetHotReadRegions() *core.StoreHotRegionInfos

GetHotReadRegions gets all hot read regions status

func (*Handler) GetHotReadStores

func (h *Handler) GetHotReadStores() map[uint64]uint64

GetHotReadStores gets all hot write stores status

func (*Handler) GetHotWriteRegions

func (h *Handler) GetHotWriteRegions() *core.StoreHotRegionInfos

GetHotWriteRegions gets all hot write regions status

func (*Handler) GetHotWriteStores

func (h *Handler) GetHotWriteStores() map[uint64]uint64

GetHotWriteStores gets all hot write stores status

func (*Handler) GetLeaderOperators

func (h *Handler) GetLeaderOperators() ([]*schedule.Operator, error)

GetLeaderOperators returns the running leader operators.

func (*Handler) GetOperator

func (h *Handler) GetOperator(regionID uint64) (*schedule.Operator, error)

GetOperator returns the region operator.

func (*Handler) GetOperators

func (h *Handler) GetOperators() ([]*schedule.Operator, error)

GetOperators returns the running operators.

func (*Handler) GetOperatorsOfKind

func (h *Handler) GetOperatorsOfKind(kind core.ResourceKind) ([]*schedule.Operator, error)

GetOperatorsOfKind returns the running operators of the kind.

func (*Handler) GetRegionOperators

func (h *Handler) GetRegionOperators() ([]*schedule.Operator, error)

GetRegionOperators returns the running region operators.

func (*Handler) GetSchedulers

func (h *Handler) GetSchedulers() ([]string, error)

GetSchedulers returns all names of schedulers.

func (*Handler) RemoveOperator

func (h *Handler) RemoveOperator(regionID uint64) error

RemoveOperator removes the region operator.

func (*Handler) RemoveScheduler

func (h *Handler) RemoveScheduler(name string) error

RemoveScheduler removes a scheduler by name.

type RaftCluster

type RaftCluster struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

RaftCluster is used for cluster config management. Raft cluster key format: cluster 1 -> /1/raft, value is metapb.Cluster cluster 2 -> /2/raft For cluster 1 store 1 -> /1/raft/s/1, value is metapb.Store region 1 -> /1/raft/r/1, value is metapb.Region

func (*RaftCluster) BuryStore

func (c *RaftCluster) BuryStore(storeID uint64, force bool) error

BuryStore marks a store as tombstone in cluster. State transition: Case 1: Up -> Tombstone (if force is true); Case 2: Offline -> Tombstone.

func (*RaftCluster) GetConfig

func (c *RaftCluster) GetConfig() *metapb.Cluster

GetConfig gets config from cluster.

func (*RaftCluster) GetNamespaceClassifier

func (c *RaftCluster) GetNamespaceClassifier() namespace.Classifier

GetNamespaceClassifier returns current namespace classifier.

func (*RaftCluster) GetRegionByID

func (c *RaftCluster) GetRegionByID(regionID uint64) (*metapb.Region, *metapb.Peer)

GetRegionByID gets region and leader peer by regionID from cluster.

func (*RaftCluster) GetRegionByKey

func (c *RaftCluster) GetRegionByKey(regionKey []byte) (*metapb.Region, *metapb.Peer)

GetRegionByKey gets region and leader peer by region key from cluster.

func (*RaftCluster) GetRegionInfoByID

func (c *RaftCluster) GetRegionInfoByID(regionID uint64) *core.RegionInfo

GetRegionInfoByID gets regionInfo by regionID from cluster.

func (*RaftCluster) GetRegionInfoByKey

func (c *RaftCluster) GetRegionInfoByKey(regionKey []byte) *core.RegionInfo

GetRegionInfoByKey gets regionInfo by region key from cluster.

func (*RaftCluster) GetRegions

func (c *RaftCluster) GetRegions() []*metapb.Region

GetRegions gets regions from cluster.

func (*RaftCluster) GetStore

func (c *RaftCluster) GetStore(storeID uint64) (*core.StoreInfo, error)

GetStore gets store from cluster.

func (*RaftCluster) GetStores

func (c *RaftCluster) GetStores() []*metapb.Store

GetStores gets stores from cluster.

func (*RaftCluster) HandleRegionHeartbeat

func (c *RaftCluster) HandleRegionHeartbeat(region *core.RegionInfo) error

HandleRegionHeartbeat processes RegionInfo reports from client.

func (*RaftCluster) RemoveStore

func (c *RaftCluster) RemoveStore(storeID uint64) error

RemoveStore marks a store as offline in cluster. State transition: Up -> Offline.

func (*RaftCluster) SetStoreState

func (c *RaftCluster) SetStoreState(storeID uint64, state metapb.StoreState) error

SetStoreState sets up a store's state.

func (*RaftCluster) SetStoreWeight

func (c *RaftCluster) SetStoreWeight(storeID uint64, leader, region float64) error

SetStoreWeight sets up a store's leader/region balance weight.

func (*RaftCluster) UpdateStoreLabels

func (c *RaftCluster) UpdateStoreLabels(storeID uint64, labels []*metapb.StoreLabel) error

UpdateStoreLabels updates a store's location labels.

type Replication

type Replication struct {
	// contains filtered or unexported fields
}

Replication provides some help to do replication.

func (*Replication) GetLocationLabels

func (r *Replication) GetLocationLabels() []string

GetLocationLabels returns the location labels for each region

func (*Replication) GetMaxReplicas

func (r *Replication) GetMaxReplicas() int

GetMaxReplicas returns the number of replicas for each region.

func (*Replication) SetMaxReplicas

func (r *Replication) SetMaxReplicas(replicas int)

SetMaxReplicas set the replicas for each region.

type ReplicationConfig

type ReplicationConfig struct {
	// MaxReplicas is the number of replicas for each region.
	MaxReplicas uint64 `toml:"max-replicas,omitempty" json:"max-replicas"`

	// The label keys specified the location of a store.
	// The placement priorities is implied by the order of label keys.
	// For example, ["zone", "rack"] means that we should place replicas to
	// different zones first, then to different racks if we don't have enough zones.
	LocationLabels typeutil.StringSlice `toml:"location-labels,omitempty" json:"location-labels"`
}

ReplicationConfig is the replication configuration.

type ScheduleConfig

type ScheduleConfig struct {
	// If the snapshot count of one store is greater than this value,
	// it will never be used as a source or target store.
	MaxSnapshotCount uint64 `toml:"max-snapshot-count,omitempty" json:"max-snapshot-count"`
	// MaxStoreDownTime is the max duration after which
	// a store will be considered to be down if it hasn't reported heartbeats.
	MaxStoreDownTime typeutil.Duration `toml:"max-store-down-time,omitempty" json:"max-store-down-time"`
	// LeaderScheduleLimit is the max coexist leader schedules.
	LeaderScheduleLimit uint64 `toml:"leader-schedule-limit,omitempty" json:"leader-schedule-limit"`
	// RegionScheduleLimit is the max coexist region schedules.
	RegionScheduleLimit uint64 `toml:"region-schedule-limit,omitempty" json:"region-schedule-limit"`
	// ReplicaScheduleLimit is the max coexist replica schedules.
	ReplicaScheduleLimit uint64 `toml:"replica-schedule-limit,omitempty" json:"replica-schedule-limit"`
	// Schedulers support for loding customized schedulers
	Schedulers SchedulerConfigs `toml:"schedulers,omitempty" json:"schedulers-v2"` // json v2 is for the sake of compatible upgrade
}

ScheduleConfig is the schedule configuration.

type SchedulerConfig

type SchedulerConfig struct {
	Type string   `toml:"type" json:"type"`
	Args []string `toml:"args,omitempty" json:"args"`
}

SchedulerConfig is customized scheduler configuration

type SchedulerConfigs

type SchedulerConfigs []SchedulerConfig

SchedulerConfigs is a slice of customized scheduler configuration.

type Server

type Server struct {
	// contains filtered or unexported fields
}

Server is the pd server.

func CreateServer

func CreateServer(cfg *Config, apiRegister func(*Server) http.Handler) (*Server, error)

CreateServer creates the UNINITIALIZED pd server with given configuration.

func (*Server) AllocID

func (s *Server) AllocID(ctx context.Context, request *pdpb.AllocIDRequest) (*pdpb.AllocIDResponse, error)

AllocID implements gRPC PDServer.

func (*Server) AskSplit

func (s *Server) AskSplit(ctx context.Context, request *pdpb.AskSplitRequest) (*pdpb.AskSplitResponse, error)

AskSplit implements gRPC PDServer.

func (*Server) Bootstrap

func (s *Server) Bootstrap(ctx context.Context, request *pdpb.BootstrapRequest) (*pdpb.BootstrapResponse, error)

Bootstrap implements gRPC PDServer.

func (*Server) Close

func (s *Server) Close()

Close closes the server.

func (*Server) ClusterID

func (s *Server) ClusterID() uint64

ClusterID returns the cluster ID of this server.

func (*Server) GetAddr

func (s *Server) GetAddr() string

GetAddr returns the server urls for clients.

func (*Server) GetClient

func (s *Server) GetClient() *clientv3.Client

GetClient returns builtin etcd client.

func (*Server) GetCluster

func (s *Server) GetCluster() *metapb.Cluster

GetCluster gets cluster

func (*Server) GetClusterConfig

func (s *Server) GetClusterConfig(ctx context.Context, request *pdpb.GetClusterConfigRequest) (*pdpb.GetClusterConfigResponse, error)

GetClusterConfig implements gRPC PDServer.

func (*Server) GetClusterStatus

func (s *Server) GetClusterStatus() (*ClusterStatus, error)

GetClusterStatus gets cluster status

func (*Server) GetConfig

func (s *Server) GetConfig() *Config

GetConfig gets the config information.

func (*Server) GetEndpoints

func (s *Server) GetEndpoints() []string

GetEndpoints returns the etcd endpoints for outer use.

func (*Server) GetHandler

func (s *Server) GetHandler() *Handler

GetHandler returns the handler for API.

func (*Server) GetLeader

func (s *Server) GetLeader() (*pdpb.Member, error)

GetLeader gets pd cluster leader.

func (*Server) GetMembers

GetMembers implements gRPC PDServer.

func (*Server) GetRaftCluster

func (s *Server) GetRaftCluster() *RaftCluster

GetRaftCluster gets raft cluster. If cluster has not been bootstrapped, return nil.

func (*Server) GetRegion

func (s *Server) GetRegion(ctx context.Context, request *pdpb.GetRegionRequest) (*pdpb.GetRegionResponse, error)

GetRegion implements gRPC PDServer.

func (*Server) GetRegionByID

func (s *Server) GetRegionByID(ctx context.Context, request *pdpb.GetRegionByIDRequest) (*pdpb.GetRegionResponse, error)

GetRegionByID implements gRPC PDServer.

func (*Server) GetReplicationConfig

func (s *Server) GetReplicationConfig() *ReplicationConfig

GetReplicationConfig get the replication config

func (*Server) GetScheduleConfig

func (s *Server) GetScheduleConfig() *ScheduleConfig

GetScheduleConfig gets the balance config information.

func (*Server) GetStore

func (s *Server) GetStore(ctx context.Context, request *pdpb.GetStoreRequest) (*pdpb.GetStoreResponse, error)

GetStore implements gRPC PDServer.

func (*Server) ID

func (s *Server) ID() uint64

ID returns the unique etcd ID for this server in etcd cluster.

func (*Server) IsBootstrapped

func (s *Server) IsBootstrapped(ctx context.Context, request *pdpb.IsBootstrappedRequest) (*pdpb.IsBootstrappedResponse, error)

IsBootstrapped implements gRPC PDServer.

func (*Server) IsLeader

func (s *Server) IsLeader() bool

IsLeader returns whether server is leader or not.

func (*Server) Name

func (s *Server) Name() string

Name returns the unique etcd Name for this server in etcd cluster.

func (*Server) PutClusterConfig

func (s *Server) PutClusterConfig(ctx context.Context, request *pdpb.PutClusterConfigRequest) (*pdpb.PutClusterConfigResponse, error)

PutClusterConfig implements gRPC PDServer.

func (*Server) PutStore

func (s *Server) PutStore(ctx context.Context, request *pdpb.PutStoreRequest) (*pdpb.PutStoreResponse, error)

PutStore implements gRPC PDServer.

func (*Server) RegionHeartbeat

func (s *Server) RegionHeartbeat(stream pdpb.PD_RegionHeartbeatServer) error

RegionHeartbeat implements gRPC PDServer.

func (*Server) ReportSplit

func (s *Server) ReportSplit(ctx context.Context, request *pdpb.ReportSplitRequest) (*pdpb.ReportSplitResponse, error)

ReportSplit implements gRPC PDServer.

func (*Server) ResignLeader

func (s *Server) ResignLeader(nextLeader string) error

ResignLeader resigns current PD's leadership. If nextLeader is empty, all other pd-servers can campaign.

func (*Server) Run

func (s *Server) Run() error

Run runs the pd server.

func (*Server) SetReplicationConfig

func (s *Server) SetReplicationConfig(cfg ReplicationConfig)

SetReplicationConfig sets the replication config

func (*Server) SetScheduleConfig

func (s *Server) SetScheduleConfig(cfg ScheduleConfig)

SetScheduleConfig sets the balance config information.

func (*Server) StoreHeartbeat

func (s *Server) StoreHeartbeat(ctx context.Context, request *pdpb.StoreHeartbeatRequest) (*pdpb.StoreHeartbeatResponse, error)

StoreHeartbeat implements gRPC PDServer.

func (*Server) Tso

func (s *Server) Tso(stream pdpb.PD_TsoServer) error

Tso implements gRPC PDServer.

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