membership

package
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 Go to latest Published: Jun 24, 2021 License: MIT Imports: 27 Imported by: 0

Documentation

Overview

Package membership is a generated GoMock package.

Index

Constants

View Source 
const (
	// RoleKey label is set by every single service as soon as it bootstraps its
	// ringpop instance. The data for this key is the service name
	RoleKey = "serviceName"

	// RolePort label is set by every single service as soon as it bootstraps its
	// ringpop instance. The data for this key represents the TCP port through which
	// the service can be accessed.
	RolePort = "servicePort"
)

Variables

View Source 
var ErrIncorrectAddressFormat = errors.New("Incorrect address format")

ErrIncorrectAddressFormat is thrown on incorrect address format

View Source 
var ErrInsufficientHosts = serviceerror.NewInternal("Not enough hosts to serve the request")

ErrInsufficientHosts is thrown when there are not enough hosts to serve the request

View Source 
var ErrListenerAlreadyExist = errors.New("Listener already exist for the service")

ErrListenerAlreadyExist is thrown on a duplicate AddListener call from the same listener

View Source 
var ErrUnknownService = errors.New("Service not tracked by Monitor")

ErrUnknownService is thrown for a service that is not tracked by this instance

Functions

func BuildBroadcastHostPort added in v0.27.0 

func BuildBroadcastHostPort(listenerPeerInfo tchannel.LocalPeerInfo, broadcastAddress string) (string, error)

BuildBroadcastHostPort return the listener hostport from an existing tchannel and overrides the address with broadcastAddress if specified

func ServiceNameToServiceTypeEnum added in v0.27.0 

func ServiceNameToServiceTypeEnum(name string) (persistence.ServiceType, error)

func SplitHostPortTyped added in v0.27.0 

func SplitHostPortTyped(hostPort string) (net.IP, uint16, error)

SplitHostPortTyped expands upon net.SplitHostPort by providing type parsing.

Types

type ChangedEvent 

type ChangedEvent struct {
	HostsAdded   []*HostInfo
	HostsUpdated []*HostInfo
	HostsRemoved []*HostInfo
}

ChangedEvent describes a change in membership

type HostInfo 

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

HostInfo is a type that contains the info about a temporal host

func NewHostInfo 

func NewHostInfo(addr string, labels map[string]string) *HostInfo

NewHostInfo creates a new HostInfo instance

func (*HostInfo) GetAddress 

func (hi *HostInfo) GetAddress() string

GetAddress returns the ip:port address

func (*HostInfo) Identity 

func (hi *HostInfo) Identity() string

Identity implements ringpop's Membership interface

func (*HostInfo) Label 

func (hi *HostInfo) Label(key string) (value string, has bool)

Label implements ringpop's Membership interface

func (*HostInfo) SetLabel 

func (hi *HostInfo) SetLabel(key string, value string)

SetLabel sets the label.

type MockMonitor added in v0.27.0 

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

MockMonitor is a mock of Monitor interface.

func NewMockMonitor added in v0.27.0 

func NewMockMonitor(ctrl *gomock.Controller) *MockMonitor

NewMockMonitor creates a new mock instance.

func (*MockMonitor) AddListener added in v0.27.0 

func (m *MockMonitor) AddListener(service, name string, notifyChannel chan<- *ChangedEvent) error

AddListener mocks base method.

func (*MockMonitor) EXPECT added in v0.27.0 

func (m *MockMonitor) EXPECT() *MockMonitorMockRecorder

EXPECT returns an object that allows the caller to indicate expected use.

func (*MockMonitor) EvictSelf added in v0.27.0 

func (m *MockMonitor) EvictSelf() error

EvictSelf mocks base method.

func (*MockMonitor) GetMemberCount added in v0.27.0 

func (m *MockMonitor) GetMemberCount(role string) (int, error)

GetMemberCount mocks base method.

func (*MockMonitor) GetReachableMembers added in v0.27.0 

func (m *MockMonitor) GetReachableMembers() ([]string, error)

GetReachableMembers mocks base method.

func (*MockMonitor) GetResolver added in v0.27.0 

func (m *MockMonitor) GetResolver(service string) (ServiceResolver, error)

GetResolver mocks base method.

func (*MockMonitor) Lookup added in v0.27.0 

func (m *MockMonitor) Lookup(service, key string) (*HostInfo, error)

Lookup mocks base method.

func (*MockMonitor) RemoveListener added in v0.27.0 

func (m *MockMonitor) RemoveListener(service, name string) error

RemoveListener mocks base method.

func (*MockMonitor) Start added in v0.27.0 

func (m *MockMonitor) Start()

Start mocks base method.

func (*MockMonitor) Stop added in v0.27.0 

func (m *MockMonitor) Stop()

Stop mocks base method.

func (*MockMonitor) WhoAmI added in v0.27.0 

func (m *MockMonitor) WhoAmI() (*HostInfo, error)

WhoAmI mocks base method.

type MockMonitorMockRecorder added in v0.27.0 

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

MockMonitorMockRecorder is the mock recorder for MockMonitor.

func (*MockMonitorMockRecorder) AddListener added in v0.27.0 

func (mr *MockMonitorMockRecorder) AddListener(service, name, notifyChannel interface{}) *gomock.Call

AddListener indicates an expected call of AddListener.

func (*MockMonitorMockRecorder) EvictSelf added in v0.27.0 

func (mr *MockMonitorMockRecorder) EvictSelf() *gomock.Call

EvictSelf indicates an expected call of EvictSelf.

func (*MockMonitorMockRecorder) GetMemberCount added in v0.27.0 

func (mr *MockMonitorMockRecorder) GetMemberCount(role interface{}) *gomock.Call

GetMemberCount indicates an expected call of GetMemberCount.

func (*MockMonitorMockRecorder) GetReachableMembers added in v0.27.0 

func (mr *MockMonitorMockRecorder) GetReachableMembers() *gomock.Call

GetReachableMembers indicates an expected call of GetReachableMembers.

func (*MockMonitorMockRecorder) GetResolver added in v0.27.0 

func (mr *MockMonitorMockRecorder) GetResolver(service interface{}) *gomock.Call

GetResolver indicates an expected call of GetResolver.

func (*MockMonitorMockRecorder) Lookup added in v0.27.0 

func (mr *MockMonitorMockRecorder) Lookup(service, key interface{}) *gomock.Call

Lookup indicates an expected call of Lookup.

func (*MockMonitorMockRecorder) RemoveListener added in v0.27.0 

func (mr *MockMonitorMockRecorder) RemoveListener(service, name interface{}) *gomock.Call

RemoveListener indicates an expected call of RemoveListener.

func (*MockMonitorMockRecorder) Start added in v0.27.0 

func (mr *MockMonitorMockRecorder) Start() *gomock.Call

Start indicates an expected call of Start.

func (*MockMonitorMockRecorder) Stop added in v0.27.0 

func (mr *MockMonitorMockRecorder) Stop() *gomock.Call

Stop indicates an expected call of Stop.

func (*MockMonitorMockRecorder) WhoAmI added in v0.27.0 

func (mr *MockMonitorMockRecorder) WhoAmI() *gomock.Call

WhoAmI indicates an expected call of WhoAmI.

type MockServiceResolver added in v0.27.0 

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

MockServiceResolver is a mock of ServiceResolver interface.

func NewMockServiceResolver added in v0.27.0 

func NewMockServiceResolver(ctrl *gomock.Controller) *MockServiceResolver

NewMockServiceResolver creates a new mock instance.

func (*MockServiceResolver) AddListener added in v0.27.0 

func (m *MockServiceResolver) AddListener(name string, notifyChannel chan<- *ChangedEvent) error

AddListener mocks base method.

func (*MockServiceResolver) EXPECT added in v0.27.0 

func (m *MockServiceResolver) EXPECT() *MockServiceResolverMockRecorder

EXPECT returns an object that allows the caller to indicate expected use.

func (*MockServiceResolver) Lookup added in v0.27.0 

func (m *MockServiceResolver) Lookup(key string) (*HostInfo, error)

Lookup mocks base method.

func (*MockServiceResolver) MemberCount added in v0.27.0 

func (m *MockServiceResolver) MemberCount() int

MemberCount mocks base method.

func (*MockServiceResolver) Members added in v0.27.0 

func (m *MockServiceResolver) Members() []*HostInfo

Members mocks base method.

func (*MockServiceResolver) RemoveListener added in v0.27.0 

func (m *MockServiceResolver) RemoveListener(name string) error

RemoveListener mocks base method.

type MockServiceResolverMockRecorder added in v0.27.0 

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

MockServiceResolverMockRecorder is the mock recorder for MockServiceResolver.

func (*MockServiceResolverMockRecorder) AddListener added in v0.27.0 

func (mr *MockServiceResolverMockRecorder) AddListener(name, notifyChannel interface{}) *gomock.Call

AddListener indicates an expected call of AddListener.

func (*MockServiceResolverMockRecorder) Lookup added in v0.27.0 

func (mr *MockServiceResolverMockRecorder) Lookup(key interface{}) *gomock.Call

Lookup indicates an expected call of Lookup.

func (*MockServiceResolverMockRecorder) MemberCount added in v0.27.0 

func (mr *MockServiceResolverMockRecorder) MemberCount() *gomock.Call

MemberCount indicates an expected call of MemberCount.

func (*MockServiceResolverMockRecorder) Members added in v0.27.0 

func (mr *MockServiceResolverMockRecorder) Members() *gomock.Call

Members indicates an expected call of Members.

func (*MockServiceResolverMockRecorder) RemoveListener added in v0.27.0 

func (mr *MockServiceResolverMockRecorder) RemoveListener(name interface{}) *gomock.Call

RemoveListener indicates an expected call of RemoveListener.

type Monitor 

type Monitor interface {
	common.Daemon

	WhoAmI() (*HostInfo, error)
	// EvictSelf evicts this member from the membership ring. After this method is
	// called, other members will discover that this node is no longer part of the
	// ring. This primitive is useful to carry out graceful host shutdown during deployments.
	EvictSelf() error
	Lookup(service string, key string) (*HostInfo, error)
	GetResolver(service string) (ServiceResolver, error)
	// AddListener adds a listener for this service.
	// The listener will get notified on the given
	// channel, whenever there is a membership change.
	// @service: The service to be listened on
	// @name: The name for identifying the listener
	// @notifyChannel: The channel on which the caller receives notifications
	AddListener(service string, name string, notifyChannel chan<- *ChangedEvent) error
	// RemoveListener removes a listener for this service.
	RemoveListener(service string, name string) error
	// GetReachableMembers returns addresses of all members of the ring
	GetReachableMembers() ([]string, error)
	// GetMemberCount returns the number of reachable members
	// currently in this node's membership list for the given role
	GetMemberCount(role string) (int, error)
}

Monitor provides membership information for all temporal services. It can be used to query which member host of a service is responsible for serving a given key.

func NewRingpopMonitor 

func NewRingpopMonitor(
	serviceName string,
	services map[string]int,
	rp *RingPop,
	logger log.Logger,
	metadataManager persistence.ClusterMetadataManager,
	broadcastHostPortResolver func() (string, error),
) Monitor

NewRingpopMonitor returns a ringpop-based membership monitor

type RingPop added in v0.27.0 

type RingPop struct {
	*ringpop.Ringpop
	// contains filtered or unexported fields
}

RingPop is a simple wrapper

func NewRingPop added in v0.27.0 

func NewRingPop(
	ringPop *ringpop.Ringpop,
	maxJoinDuration time.Duration,
	logger log.Logger,
) *RingPop

NewRingPop create a new ring pop wrapper

func (*RingPop) Start added in v0.27.0 

func (r *RingPop) Start(
	bootstrapHostPostRetriever func() ([]string, error),
	bootstrapRetryBackoffInterval time.Duration,
)

Start start ring pop

func (*RingPop) Stop added in v0.27.0 

func (r *RingPop) Stop()

Stop stop ring pop

type ServiceResolver 

type ServiceResolver interface {
	Lookup(key string) (*HostInfo, error)
	// AddListener adds a listener which will get notified on the given
	// channel, whenever membership changes.
	// @name: The name for identifying the listener
	// @notifyChannel: The channel on which the caller receives notifications
	AddListener(name string, notifyChannel chan<- *ChangedEvent) error
	// RemoveListener removes a listener for this service.
	RemoveListener(name string) error
	// MemberCount returns host count in hashring for any particular role
	MemberCount() int
	// Members returns all host addresses in hashring for any particular role
	Members() []*HostInfo
}

ServiceResolver provides membership information for a specific temporal service. It can be used to resolve which member host is responsible for serving a given key.

Source Files

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