edge

package
v0.0.48 Latest Latest
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 Go to latest Published: Dec 27, 2020 License: BSD-3-Clause Imports: 27 Imported by: 4

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Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Cluster 

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

Cluster

func (*Cluster) AddMember 

func (c *Cluster) AddMember(m *ClusterMember)

func (*Cluster) GetByID 

func (c *Cluster) GetByID(id string) *ClusterMember

func (*Cluster) LeaderID 

func (c *Cluster) LeaderID() string

func (*Cluster) Members 

func (c *Cluster) Members() []*ClusterMember

func (*Cluster) RemoveMember 

func (c *Cluster) RemoveMember(m *ClusterMember)

type ClusterMember 

type ClusterMember struct {
	ServerID    string
	ReplicaSet  uint64
	ShardRange  [2]uint32
	GatewayAddr []string
	ClusterAddr net.IP
	ClusterPort uint16
	RaftPort    int
	RaftState   rony.RaftState
	// contains filtered or unexported fields
}

ClusterMember

type DispatchCtx 

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

DispatchCtx

func (*DispatchCtx) Conn 

func (ctx *DispatchCtx) Conn() gateway.Conn

func (*DispatchCtx) Debug 

func (ctx *DispatchCtx) Debug()

func (*DispatchCtx) FillEnvelope 

func (ctx *DispatchCtx) FillEnvelope(requestID uint64, constructor int64, payload []byte, auth []byte, kv ...*rony.KeyValue)

func (*DispatchCtx) Get 

func (ctx *DispatchCtx) Get(key string) interface{}

func (*DispatchCtx) GetBool 

func (ctx *DispatchCtx) GetBool(key string) bool

func (*DispatchCtx) GetBytes 

func (ctx *DispatchCtx) GetBytes(key string, defaultValue []byte) []byte

func (*DispatchCtx) GetInt64 

func (ctx *DispatchCtx) GetInt64(key string, defaultValue int64) int64

func (*DispatchCtx) GetString 

func (ctx *DispatchCtx) GetString(key string, defaultValue string) string

func (*DispatchCtx) Set 

func (ctx *DispatchCtx) Set(key string, v interface{})

func (*DispatchCtx) StreamID 

func (ctx *DispatchCtx) StreamID() int64

func (*DispatchCtx) UnmarshalEnvelope 

func (ctx *DispatchCtx) UnmarshalEnvelope(data []byte) error

type Dispatcher 

type Dispatcher interface {
	// All the input arguments are valid in the function context, if you need to pass 'envelope' to other
	// async functions, make sure to hard copy (clone) it before sending it.
	OnMessage(ctx *DispatchCtx, envelope *rony.MessageEnvelope)
	// All the input arguments are valid in the function context, if you need to pass 'data' or 'envelope' to other
	// async functions, make sure to hard copy (clone) it before sending it. If 'err' is not nil then envelope will be
	// discarded, it is the user's responsibility to send back appropriate message using 'conn'
	// Note that conn IS NOT nil in any circumstances.
	Interceptor(ctx *DispatchCtx, data []byte) (err error)
	// This will be called when the context has been finished, this lets cleaning up, or in case you need to flush the
	// messages and updates in one go.
	Done(ctx *DispatchCtx)
	// This will be called when a new connection has been opened
	OnOpen(conn gateway.Conn, kvs ...gateway.KeyValue)
	// This will be called when a connection is closed
	OnClose(conn gateway.Conn)
}

Dispatcher

type GetConstructorNameFunc 

type GetConstructorNameFunc func(constructor int64) string

type Handler 

type Handler func(ctx *RequestCtx, in *rony.MessageEnvelope)

type Option 

type Option func(edge *Server)

Option

func WithCustomConstructorName 

func WithCustomConstructorName(h func(constructor int64) (name string)) Option

WithCustomerConstructorName will be used to give a human readable names to messages

func WithDataPath 

func WithDataPath(path string) Option

WithDataPath set where the internal data for raft and gossip are stored.

func WithGossipPort 

func WithGossipPort(gossipPort int) Option

WithGossipPort

func WithReplicaSet 

func WithReplicaSet(replicaSet uint64, bindPort int, bootstrap bool) Option

WithReplicaSet

func WithTcpGateway 

func WithTcpGateway(config tcpGateway.Config) Option

WithTcpGateway set the gateway to tcp which can support http and/or websocket Only one gateway could be set and if you set another gateway it panics on runtime.

func WithTestGateway 

func WithTestGateway(config dummyGateway.Config) Option

WithTestGateway set the gateway to a dummy gateway which is useful for writing tests. Only one gateway could be set and if you set another gateway it panics on runtime.

type RequestCtx 

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

RequestCtx

func (*RequestCtx) Conn 

func (ctx *RequestCtx) Conn() gateway.Conn

func (*RequestCtx) ConnID 

func (ctx *RequestCtx) ConnID() uint64

func (*RequestCtx) Get 

func (ctx *RequestCtx) Get(key string) interface{}

func (*RequestCtx) GetBool 

func (ctx *RequestCtx) GetBool(key string) bool

func (*RequestCtx) GetBytes 

func (ctx *RequestCtx) GetBytes(key string, defaultValue []byte) []byte

func (*RequestCtx) GetInt64 

func (ctx *RequestCtx) GetInt64(key string, defaultValue int64) int64

func (*RequestCtx) GetString 

func (ctx *RequestCtx) GetString(key string, defaultValue string) string

func (*RequestCtx) PushClusterMessage 

func (ctx *RequestCtx) PushClusterMessage(serverID string, requestID uint64, constructor int64, proto proto.Message, kvs ...*rony.KeyValue)

func (*RequestCtx) PushCustomError 

func (ctx *RequestCtx) PushCustomError(code, item string, enTxt string, enItems []string, localTxt string, localItems []string)

func (*RequestCtx) PushCustomMessage 

func (ctx *RequestCtx) PushCustomMessage(requestID uint64, constructor int64, proto proto.Message, kvs ...*rony.KeyValue)

func (*RequestCtx) PushError 

func (ctx *RequestCtx) PushError(code, item string)

func (*RequestCtx) PushMessage 

func (ctx *RequestCtx) PushMessage(constructor int64, proto proto.Message)

func (*RequestCtx) PushRedirectLeader 

func (ctx *RequestCtx) PushRedirectLeader()

func (*RequestCtx) PushRedirectShard 

func (ctx *RequestCtx) PushRedirectShard(shard uint32, wait time.Duration)

func (*RequestCtx) ReqID 

func (ctx *RequestCtx) ReqID() uint64

func (*RequestCtx) Return 

func (ctx *RequestCtx) Return()

func (*RequestCtx) Set 

func (ctx *RequestCtx) Set(key string, v interface{})

func (*RequestCtx) StopExecution 

func (ctx *RequestCtx) StopExecution()

func (*RequestCtx) Stopped 

func (ctx *RequestCtx) Stopped() bool

type Server 

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

Server

func NewServer 

func NewServer(serverID string, dispatcher Dispatcher, opts ...Option) *Server

func (*Server) AppendHandlers 

func (edge *Server) AppendHandlers(constructor int64, handlers ...Handler)

AppendHandlers appends the handlers for the constructor in order. So handlers[n] will be called before handlers[n+1].

func (*Server) ClusterMembers 

func (edge *Server) ClusterMembers() []*ClusterMember

ClusterMembers returns a list of all the discovered nodes in the cluster

func (*Server) ClusterSend 

func (edge *Server) ClusterSend(serverID string, envelope *rony.MessageEnvelope, kvs ...*rony.KeyValue) (err error)

ClusterSend sends 'envelope' to the server identified by 'serverID'. It may returns ErrNotFound if the server is not in the list. The message will be send with BEST EFFORT and using UDP

func (*Server) GetGatewayConn added in v0.0.6 

func (edge *Server) GetGatewayConn(connID uint64) gateway.Conn

GetGatewayConn return the gateway connection identified by connID or returns nil if not found.

func (*Server) GetServerID 

func (edge *Server) GetServerID() string

GetServerID return this server id, which MUST be unique in the cluster otherwise the behaviour is unknown.

func (*Server) JoinCluster 

func (edge *Server) JoinCluster(addr ...string) (int, error)

JoinCluster is used to take an existing Cluster and attempt to join a cluster by contacting all the given hosts and performing a state sync. This returns the number of hosts successfully contacted and an error if none could be reached. If an error is returned, the node did not successfully join the cluster.

func (*Server) PrependHandlers 

func (edge *Server) PrependHandlers(constructor int64, handlers ...Handler)

PrependHandlers prepends the handlers for the constructor in order.

func (*Server) SetHandlers 

func (edge *Server) SetHandlers(constructor int64, leaderOnly bool, handlers ...Handler)

SetHandlers set the handlers for the constructor. 'leaderOnly' is applicable ONLY if the cluster is run with Raft support. If cluster is a Raft enabled cluster, then by setting 'leaderOnly' to TRUE, requests sent to a follower server will return redirect error to the client. For standalone servers 'leaderOnly' does not affect.

func (*Server) SetPostHandlers added in v0.0.5 

func (edge *Server) SetPostHandlers(handlers ...Handler)

SetPreHandlers set the handler which will be called after executing any request. These pre handlers are like middlewares which will be automatically triggered for each request. If you want to set post handler for specific request the your must use SetHandlers, PrependHandlers or AppendHandlers

func (*Server) SetPreHandlers added in v0.0.5 

func (edge *Server) SetPreHandlers(handlers ...Handler)

SetPreHandlers set the handler which will be called before executing any request. These pre handlers are like middlewares which will be automatically triggered for each request. If you want to set pre handler for specific request the your must use SetHandlers, PrependHandlers or AppendHandlers

func (*Server) Shutdown 

func (edge *Server) Shutdown()

Shutdown gracefully shutdown the services

func (*Server) ShutdownWithSignal 

func (edge *Server) ShutdownWithSignal(signals ...os.Signal)

Shutdown blocks until any of the signals has been called

func (*Server) StartCluster 

func (edge *Server) StartCluster() (err error)

StartCluster is non-blocking function which runs the gossip and raft if it is set

func (*Server) StartGateway 

func (edge *Server) StartGateway()

StartGateway is non-blocking function runs the gateway in background so we can accept clients requests

func (*Server) Stats 

func (edge *Server) Stats() *Stats

Stats exports some internal metrics data packed in 'Stats' struct

type SimpleDispatcher 

type SimpleDispatcher struct {
	OnMessageFunc func(ctx *DispatchCtx, envelope *rony.MessageEnvelope)
}

SimpleDispatcher is a naive implementation of Dispatcher. You only need to set OnMessageFunc with

func (*SimpleDispatcher) Done 

func (s *SimpleDispatcher) Done(ctx *DispatchCtx)

func (*SimpleDispatcher) Interceptor 

func (s *SimpleDispatcher) Interceptor(ctx *DispatchCtx, data []byte) (err error)

func (*SimpleDispatcher) OnClose 

func (s *SimpleDispatcher) OnClose(conn gateway.Conn)

func (*SimpleDispatcher) OnMessage 

func (s *SimpleDispatcher) OnMessage(ctx *DispatchCtx, envelope *rony.MessageEnvelope)

func (*SimpleDispatcher) OnOpen 

func (s *SimpleDispatcher) OnOpen(conn gateway.Conn, kvs ...gateway.KeyValue)

type Stats 

type Stats struct {
	Address         string
	RaftMembers     int
	RaftState       string
	ReplicaSet      uint64
	Members         int
	MembershipScore int
	GatewayProtocol gateway.Protocol
	GatewayAddr     []string
}

Stats exports some internal metrics data

Source Files

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